Automatic unloading device for container

Abstract

The invention relates to the technical field of logistics transportation, in particular to an automatic unloading device for containers, which comprises an electric forklift, a lifting track is mounted at the front end of the electric forklift, and a winding mechanism for winding a rigid chain is mounted on the bottom wall of a workbench. A plurality of front guide rails which are distributed in parallel are fixedly mounted at the front end of the workbench, and lifting mechanisms are mounted on the inner bottom walls of the front guide rails; a stainless steel conveying belt is installed at the working end of the second driving mechanism, a plurality of sets of suction cup assemblies are evenly distributed on the surface of the stainless steel conveying belt, and a negative pressure mechanism is installed on the workbench. Automatic unloading of the container can be completed, the durability of the container door is improved, the problems that when a forklift enters the container for unloading conventionally, the forklift cannot enter the container or scratches and destroys a protection layer in the container after entering the container are solved, and the problems that when the forklift conducts final unloading, goods are prone to being pushed over, goods packages are damaged, and the protection layer and refrigeration components in the protection layer are crushed are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics and transportation, and in particular to an automatic unloading device for containers. Background Art

[0002] With the continuous development of economic and trade globalization, exchanges between countries and regions are becoming more frequent and closer, and the development speed of logistics is also getting faster and faster. Most of the long-distance and large-scale logistics transportation relies on containers, but there is no significant breakthrough in the efficiency of container cargo loading and unloading, which wastes a lot of time and labor costs.

[0003] Nowadays, the cargo loading and unloading process inside containers mostly relies on forklifts to transport pre-stacked small stacks into the container for placement. However, the forklifts take up a lot of time moving back and forth between the container port and the interior. In addition, the forklifts are prone to scratching and damaging the protective layer inside the container during the reciprocating movement. In addition, the forklifts are prone to push over the cargo during the final unloading, damaging the cargo packaging, and damaging the protective layer of the container and its internal components (such as air conditioning and other refrigeration components). Summary of the invention

[0004] The purpose of the present invention is to solve the above problems existing in the prior art and to propose an automatic unloading device for containers.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic unloading device for containers, comprising an electric forklift, a lifting track is installed at the front end of the electric forklift, a sliding frame is slidably installed on the lifting track, a suction cup head is fixedly installed on the rear side of the upper end of the sliding frame, a turning conveyor roller is fixedly installed on the front side of the upper end of the sliding frame, the output end of the turning conveyor roller is connected to a conveyor belt, the conveyor belt is arranged on one side of the electric forklift and moves synchronously with the electric forklift, the front end of the turning conveyor roller is fixedly connected to a workbench, a driving mechanism 1 is installed on one side of the workbench, a sprocket is installed at the working end of the driving mechanism 1, a plurality of rigid chains are meshed and connected to the outer side of the sprocket, and a winding mechanism for winding the rigid chain is installed on the bottom wall of the workbench; A plurality of parallel front guide rails are fixedly installed at the front end of the workbench, one end of the rigid chain away from the rear guide rail extends into the front guide rail and is slidably connected thereto, a lifting mechanism is installed on the inner bottom wall of the front guide rail, and a second visual probe is installed on the outer side of one end of the front guide rail away from the workbench; A second driving mechanism, wherein the second driving mechanism is installed at the front end of the workbench, and a stainless steel conveyor belt is installed at the working end thereof, a plurality of groups of suction cup assemblies are evenly distributed on the surface of the stainless steel conveyor belt, a negative pressure mechanism is installed on the workbench, and a visual probe 1 is installed on the front side of the upper end of the second driving mechanism; A telescopic conveyor belt is arranged above the rear guide rail, and one end of the telescopic conveyor belt is close to the stainless steel conveyor belt.

[0006] Preferably, the driving mechanism 1 includes a stepper motor 2 fixedly mounted on an outer wall of one side of the workbench, and a working end of the stepper motor 2 extends above the bottom wall of the workbench and is fixedly connected to the sprocket.

[0007] Preferably, the winding mechanism comprises a support fixedly mounted on the workbench, a plurality of rear guide rails arranged in a spiral shape are fixedly mounted on the support, and one end of the rigid chain is wound in the corresponding rear guide rail.

[0008] Preferably, the lifting mechanism comprises a plurality of groups of micro cylinders fixedly mounted on the inner bottom wall of the front guide rail, the working ends of the plurality of groups of micro cylinders face upward and are fixedly mounted together with a bottom plate, the upper surface of the bottom plate being arranged in contact with the lower surface of the rigid chain.

[0009] Preferably, a slideway is installed inside the end of the front guide rail away from the workbench, and the slideway is used to guide the rigid chain.

[0010] Preferably, the second driving mechanism includes a fixed plate fixedly installed on one side of the front end of the workbench and a side plate suspended on the other side, the stainless steel conveyor belt is installed between the fixed plate and the side plate, and the stainless steel conveyor belt is driven by a stepper motor installed on the fixed plate.

[0011] Preferably, the negative pressure mechanism includes an air pump fixedly mounted on a workbench, the working end of the air pump is connected to a main air pipe, the end of the main air pipe away from the air pump is connected to a rotating air joint, one end of the rotating air joint is connected to a plurality of branch air pipes, the branch air pipes are connected to corresponding suction cup assemblies after passing through the gap between the side plate and the stainless steel conveyor belt, and a fixing rod for supporting the rotating air joint is fixedly mounted on one side of the workbench.

[0012] Preferably, the air distribution pipe is a spiral air pipe and is protected by a steel wire hose.

[0013] Preferably, the air distribution pipe rotates around the side plate to ensure the operation of the corresponding suction cup assembly.

[0014] Preferably, baffles fixedly mounted on the workbench are provided on both sides of the telescopic conveyor belt.

[0015] Compared with the prior art, the advantages of the present invention are: 1. In the present application, by configuring the front guide rail, the rigid chain and the rear guide rail, the rigid chain in the front guide rail can be raised a certain distance upward to protrude out of the T-shaped floor and lift the cargo off the T-shaped floor, so that the rigid chain moves toward the door at a uniform speed and drives the cargo to move synchronously, thereby facilitating the transportation of the cargo as a whole out of the container. At the same time, the rigid chains kept upright at the ends are locked with each other and support the cargo at the rear to prevent the cargo at the rear from collapsing due to inertia during movement.

[0016] 2. In the present application, through the arrangement of the main air pipe, the rotary air joint, the suction cup assembly and the stainless steel conveyor belt, the goods moved out from the interior of the container will be sucked by the suction cup assembly after coming into contact with the suction cup assembly, and will move along the stainless steel conveyor belt to the telescopic conveyor belt and then be put down, so that the goods can be transferred one by one to the telescopic conveyor belt for subsequent transportation.

[0017] To sum up, the present application can complete the automated unloading of containers, save manpower, improve unloading efficiency, improve the durability of container doors, avoid problems such as forklifts being unable to enter containers during conventional unloading or scratching or damaging the protective layer inside the container after entering, and prevent forklifts from easily pushing over goods and damaging the cargo packaging, or smashing the protective layer and its internal refrigeration components during the final unloading, thereby ensuring automated operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the container waiting to be unloaded; Figure 2 This is a working schematic diagram of an automatic unloading device for containers proposed by the present invention; Figure 3 This is an axonometric diagram of an automatic unloading device for containers proposed by the present invention; Figure 4 A top view of an automatic unloading device for containers proposed by the present invention; Figure 5 for Figure 4 AA-direction cross-sectional structural diagram; Figure 6 for Figure 5 The X part of the structure is enlarged schematic diagram; Figure 7 A partial view of a front guide rail portion of an automatic unloading device for a container proposed by the present invention; Figure 8 This is a sectional isometric view of a front guide rail portion of an automatic unloading device for a container proposed by the present invention.

[0019] In the figure: 1 cargo, 2 container, 3 telescopic conveyor belt, 4 unloading device, 5 electric forklift, 51 lifting rail, 52 suction cup head, 53 turning conveyor roller, 54 conveyor belt, 21 box door, 22 T-type floor, 41 visual probe 1, 42 stepper motor 1, 43 fixed plate, 44 stepper motor 2, 45 baffle, 46 suction cup assembly, 47 workbench, 48 fixed rod, 49 main air pipe, 410 rotating air joint, 411 side plate, 412 air distribution pipe, 413 stainless steel conveyor belt, 414 rigid chain, 415 front guide rail, 416 rear guide rail, 417 sprocket, 418 support, 419 visual probe 2, 420 micro cylinder, 421 bottom plate, 4151 slideway. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figures 1 to 8 , an automatic unloading device for a container, the automatic unloading device applied to a container 2, comprises an electric forklift 5, a lifting rail 51 is installed at the front end of the electric forklift 5, a sliding frame is slidably installed on the lifting rail 51, a suction cup head 52 is fixedly installed on the rear side of the upper end of the sliding frame, a turning conveying roller 53 is fixedly installed on the front side of the upper end of the sliding frame, the output end of the turning conveying roller 53 is connected to a conveyor belt 54, the conveyor belt 54 is arranged on one side of the electric forklift 5 and moves synchronously with the electric forklift 5, and the front end (i.e., the input end) of the turning conveying roller 53 is fixedly connected to the conveyor belt 54. A workbench 47 is connected, and an unloading device 4 is installed on the upper end of the workbench 47. The unloading device 4 includes a stepper motor 2 44 fixedly installed on the outer wall of one side of the workbench 47. The working end of the stepper motor 2 44 extends to the top of the bottom wall of the workbench 47 and is fixedly installed with a sprocket 417. The outer side of the sprocket 417 is meshed and connected with multiple rigid chains 414. Multiple rear guide rails 416 arranged in a spiral shape are fixedly installed on the bottom wall of the workbench 47 through a support 418. One end of the rigid chain 414 is rolled up in the corresponding rear guide rail 416. When in use, the sprocket 417 can be driven to rotate by starting the stepper motor 2 44, so that the rigid chain 414 can slide out of the rear guide rail 416, and vice versa, the rigid chain 414 can be rolled up in the rear guide rail 416.

[0022] A plurality of parallel front guide rails 415 are fixedly installed at the front end of the workbench 47, and one end of the rigid chain 414 away from the rear guide rail 416 extends into the front guide rail 415 and is slidably connected thereto. A plurality of groups of micro cylinders 420 are fixedly installed on the inner bottom wall of the front guide rail 415, and the working ends of the plurality of groups of micro cylinders 420 face upward and are fixedly installed with a bottom plate 421 together. The upper surface of the bottom plate 421 is arranged in contact with the lower surface of the rigid chain 414, so that when the micro cylinder 420 is running, its working end is extended, thereby lifting the rigid chain 414. When the rigid chain 414 is lifted up, the cargo 1 inside the container 2 is lifted up synchronously, so that the cargo 1 leaves the T-shaped floor 22, which is convenient for the subsequent transportation of the cargo 1 from the container 2.

[0023] A slide 4151 is installed inside the end of the front rail 415 away from the workbench 47. The slide 4151 is used to guide the rigid chain 414, so that when the rigid chain 414 extends outward from the inside of the front rail 415, it can extend vertically upward along the direction of the slide 4151. The rigid chains 414 that are kept upright are locked together to support 418 for the rear cargo 1 to prevent the rear cargo 1 from collapsing due to inertia during movement. A visual probe 2 419 is installed outside the end of the front rail 415 away from the workbench 47. The visual probe 2 419 is a prior art and is used to monitor whether the distance between the end of the front rail 415 away from the workbench 47 and the head end of the T-shaped floor 22 reaches the set distance.

[0024] A fixed plate 43 is fixedly installed on one side of the front end of the workbench 47, and a suspended side plate 411 is installed on the other side. A stainless steel conveyor belt 413 is installed between the fixed plate 43 and the side plate 411. The stainless steel conveyor belt 413 is driven by a stepper motor 42 installed on the fixed plate 43. A plurality of groups of suction cup assemblies 46 are evenly distributed on the surface of the stainless steel conveyor belt 413. The suction cup assembly 46 is used to adsorb the goods 1. An air pump (not shown in the figure) is installed in the unloading device 4. The working end of the air pump is connected to a main air pipe 49. The end of the main air pipe 49 away from the air pump is connected to a rotating air joint 410. One end of the rotating air joint 410 is connected to a plurality of branch air pipes 412. The branch air pipes 412 are spiral air pipes and are protected by a steel wire hose. The branch air pipes 412 are connected to the corresponding suction cup assemblies 46 after passing through the gap between the side plate 411 and the stainless steel conveyor belt 413, so that the suction cup assembly 46 can generate negative pressure, which is convenient for adsorbing the goods 1. A fixing rod 48 for supporting 418 the rotating gas joint 410 is fixedly installed on one side of the workbench 47 .

[0025] A visual probe 41 is fixedly installed on one side of the upper end of the fixed plate 43 close to the cargo 1, and the visual probe 41 controls the movement of the unloading device 4 through visual signals.

[0026] A telescopic conveyor belt 3 is arranged above the rear guide rail 416, one end of the telescopic conveyor belt 3 is close to the stainless steel conveyor belt 413, and baffles 45 fixedly installed on the workbench 47 are arranged on both sides of the telescopic conveyor belt 3. When the goods 1 fall from the suction cup assembly 46 onto the telescopic conveyor belt 3, they can be transported by the telescopic conveyor belt 3.

[0027] The specific working principle of the present application is as follows: first, the suction cup head 52 is installed on the lifting track 51 at the front end of the electric forklift 5 through the sliding frame, and then the turning conveyor roller 53 is installed on the sliding frame. Next, the conveyor belt 54 is set on one side of the electric forklift 5 and its upper end is connected to the output end of the turning conveyor roller 53. Then the workbench 47 is fixedly connected to the turning conveyor roller 53. Then, the electric forklift 5 drives the unloading device 4 to move in the unloading area and reach the designated position. The visual probe 41 transmits the visual signal to the control assembly for controlling the electric forklift 5 and the workbench 47 to move to the door 21 of the container 2 to be unloaded and keep the suction cup assembly 46 is parallel to the door 21. After the manager of the container 2 opens the door, the visual probe 1 41 controls the electric forklift 5 and the unloading device 4 to move forward through visual signals until the visual probe 2 419 detects that the distance between the head end of the front guide rail 415 and the head end of the T-shaped floor 22 reaches the set distance and then stops. The visual probe 2 419 at the head end of each front guide rail 415 recognizes the front visual signal and transmits it to the control assembly. The control assembly analyzes the visual signal to fine-tune the lateral position of the unloading device 4 to ensure that the center line of each front guide rail 415 coincides with the center line of the ventilation slot under each T-shaped floor 22. The unloading device 4 moves forward at a uniform speed, and the front guide rail 415 is inserted into the The rigid chain 414 is guided by the slideway 4151 on the bottom plate 4221 to the head end of the front guide rail 415, and then stands up from the head end of the front guide rail 415 and continues to rise upward until the visual probe 1 41 detects that the lifting height of the rigid chain 414 exceeds the height of the cargo 1 through the reserved cold air circulation space on the top of the cargo 1. After the rigid chain 414 at the top stops moving, the micro cylinders 420 evenly distributed at the bottom of the front guide rail 415 drive the bottom plate 421 upward to lift up. Driven by the bottom plate 421, the rigid chain 414 in the front guide rail 415 rises a certain distance to protrude out of the T-shaped floor 22 and lifts the cargo 1 to leave the T-shaped floor 22. The stepper motor 44 reverses and drives the rigid chain 414 to move toward the door 21 at a uniform speed. The cargo 1 moves toward the door 21 at a uniform speed along with the rigid chain 414. The rigid chains 414 kept upright at the ends are locked with each other and support the cargo 1 at the rear to prevent the cargo 1 from collapsing due to inertia during movement.

[0028] The main air pipe 49 conveys the pressurized air generated by the air pump in the unloading device 4 to the rotating air joint 410 and then transfers it to each sub-air pipe 412 and then supplies each suction cup assembly 46 with negative pressure. The sub-air pipe 412 adopts a spiral air pipe and is protected by a steel wire hose. When the suction cup assembly 46 rotates with the stainless steel conveyor belt 413, each sub-air pipe 412 can be retracted and rotated accordingly. When the first column of goods 1 arrives at the box door 21, the visual probe 41 scans the first column of goods and feeds back to the control assembly. The control assembly analyzes the stacking position of the first column of goods 1 through visual data and calculates the position of the working suction cups on the first group of suction cup assemblies 46 and feeds back to the first group of suction cup assemblies 46 for execution. During this period, the first column of goods 1 contacts and is sucked by the first group of suction cup assemblies 46. After the rigid chain 414 is sucked, it stops moving. The stepper motor 42 is powered to drive the stainless steel conveyor belt 413 to rotate at a constant speed. Each suction cup assembly 46 installed on the stainless steel conveyor belt 413 sucks up a row of goods 1 and drives it upward, then flips it to the top of the telescopic conveyor belt 3 and moves downward. When it moves to the lower part of the stainless steel conveyor belt 413, each suction cup assembly 46 cuts off the air in turn to release the adsorption of the goods 1. The goods 1 fall on the telescopic conveyor belt 3 and are transported to the warehouse or to the transport vehicle by the telescopic conveyor belt 3. During this period, the rigid chain 414 resumes moving and drives the goods 1 behind to continue to move toward the box door 21. When the stainless steel conveyor belt 413 rotates half of the stroke, the second row of goods 1 arrives at the box door 21. The control assembly calculates the second group of The position of the working suction cup on the suction cup assembly 46 is fed back to the second group of suction cup assemblies 46 for execution, until the second group of suction cup assemblies 46 suck the second row of goods 1 and drive it upward, flip it to the top of the telescopic conveyor belt 3, and then move downward to the lower part of the stainless steel conveyor belt 413, and each suction cup assembly 46 is successively cut off to release the adsorption of the goods 1. After the goods 1 fall on the telescopic conveyor belt 3, they are successively conveyed to the warehouse or to the transport vehicle via the telescopic conveyor belt 3, the turning conveyor roller 53 and the conveyor belt 54, and work reciprocatingly until the last row of goods 1 is sucked and driven to the lower part of the stainless steel conveyor belt 413, and then placed on the telescopic conveyor belt 3, and then they are successively conveyed to the warehouse or to the transport vehicle via the telescopic conveyor belt 3, the turning conveyor roller 53 and the conveyor belt 54. After the visual probe 41 detects that there is no cargo 1, the micro cylinder 420 is reset to put down the rigid chain 414, and the sprocket 417 rotates quickly to collect the rigid chain 414 into the spiral rear guide rail 416. The electric forklift 5 and the workbench 47 drive the unloading device 4 to retreat, pull out the front guide rail 415 from the T-shaped floor 22, and move toward the next container 2 to be unloaded, thereby completing the automated unloading of the container, saving manpower, improving the unloading efficiency, and improving the durability of the container door 21. It avoids the problem that the forklift cannot enter the container during conventional unloading or scratches or damages the protective layer inside the container after entering, and prevents the forklift from easily pushing down the cargo 1 and damaging the cargo packaging, or damaging the protective layer and its internal refrigeration components during the final unloading, thereby ensuring automated operation.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic unloading device for a container, comprising an electric forklift (5), characterized in that: The front end of the electric forklift (5) is provided with a lifting rail (51), a sliding frame is slidably installed on the lifting rail (51), a suction cup head (52) is fixedly installed on the rear side of the upper end of the sliding frame, a turning conveying roller (53) is fixedly installed on the front side of the upper end of the sliding frame, the output end of the turning conveying roller (53) is connected to a conveyor belt (54), the conveyor belt (54) is arranged on one side of the electric forklift (5) and moves synchronously therewith, the front end of the turning conveying roller (53) is fixedly connected to a workbench (47), a driving mechanism 1 is installed on one side of the workbench (47), a sprocket (417) is installed on the working end of the driving mechanism 1, a plurality of rigid chains (414) are meshedly connected to the outer side of the sprocket (417), and a winding mechanism for winding the rigid chains (414) is installed on the bottom wall of the workbench (47); A plurality of parallel front guide rails (415) are fixedly mounted on the front end of the workbench (47); one end of the rigid chain (414) away from the rear guide rail (416) extends into the front guide rail (415) and is slidably connected thereto; a lifting mechanism is mounted on the inner bottom wall of the front guide rail (415); and a second visual probe (419) is mounted on the outer side of one end of the front guide rail (415) away from the workbench (47); A second driving mechanism, the second driving mechanism being installed at the front end of a workbench (47), and having a stainless steel conveyor belt (413) installed at its working end, a plurality of groups of suction cup assemblies (46) being evenly distributed on the surface of the stainless steel conveyor belt (413), a negative pressure mechanism being installed on the workbench (47), and a visual probe 1 (41) being installed on the front side of the upper end of the second driving mechanism; A telescopic conveyor belt (3), wherein the telescopic conveyor belt (3) is arranged above the rear guide rail (416), and one end of the telescopic conveyor belt (3) is close to the stainless steel conveyor belt (413).

2. The automatic unloading device for containers according to claim 1, characterized in that: The driving mechanism 1 comprises a stepper motor 2 (44) fixedly mounted on an outer wall of one side of the workbench (47), wherein a working end of the stepper motor 2 (44) extends above the bottom wall of the workbench (47) and is fixedly connected to a sprocket (417).

3. The automatic unloading device for containers according to claim 1, characterized in that: The winding mechanism comprises a support (418) fixedly mounted on a workbench (47), a plurality of rear guide rails (416) arranged in a spiral shape being fixedly mounted on the support (418), and one end of the rigid chain (414) is wound in a corresponding rear guide rail (416).

4. The automatic unloading device for containers according to claim 1, characterized in that: The lifting mechanism comprises a plurality of groups of micro cylinders (420) fixedly mounted on the inner bottom wall of the front guide rail (415), the working ends of the plurality of groups of micro cylinders (420) facing upward and being fixedly mounted together with a bottom plate (421), the upper surface of the bottom plate (421) being arranged in contact with the lower surface of the rigid chain (414).

5. The automatic unloading device for containers according to claim 1, characterized in that: A slideway (4151) is installed inside one end of the front guide rail (415) away from the workbench (47), and the slideway (4151) is used to guide the rigid chain (414).

6. The automatic unloading device for containers according to claim 1, characterized in that: The second driving mechanism comprises a fixed plate (43) fixedly mounted on one side of the front end of the workbench (47) and a side plate (411) suspended on the other side; the stainless steel conveyor belt (413) is mounted between the fixed plate (43) and the side plate (411), and the stainless steel conveyor belt (413) is driven by a stepper motor 1 (42) mounted on the fixed plate (43).

7. The automatic unloading device for containers according to claim 1, characterized in that: The negative pressure mechanism comprises an air pump fixedly mounted on a workbench (47); the working end of the air pump is connected to a main air pipe (49); the end of the main air pipe (49) away from the air pump is connected to a rotating air joint (410); one end of the rotating air joint (410) is connected to a plurality of air distribution pipes (412); the air distribution pipes (412) are connected to corresponding suction cup assemblies (46) after passing through a gap between a side plate (411) and a stainless steel conveyor belt (413); and a fixing rod (48) for supporting (418) the rotating air joint (410) is fixedly mounted on one side of the workbench (47).

8. The automatic unloading device for containers according to claim 7, characterized in that: The gas distribution pipe (412) is a spiral gas pipe and is covered with a steel wire hose for protection.

9. The automatic unloading device for containers according to claim 7, characterized in that: The air distribution pipe (412) rotates around the side plate (411) to ensure the operation of the corresponding suction cup assembly (46).

10. The automatic unloading device for containers according to claim 1, characterized in that: Baffles (45) fixedly mounted on a workbench (47) are provided on both sides of the telescopic conveyor belt (3).

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