CN111689167A

CN111689167A - Luggage basket recovery device and control method thereof

Info

Publication number: CN111689167A
Application number: CN202010664083.XA
Authority: CN
Inventors: 嵇刚; 郝海闯; 高放; 王蔚玉; 李嘉毅; 于畅洋
Original assignee: Beijing Capital International Airport Co ltd; Pteris Global Beijing Ltd
Current assignee: Beijing Capital International Airport Co ltd; Pteris Global Beijing Ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-09-22

Abstract

The invention discloses a recycling device of a luggage basket and a control method thereof. The recycling device of the luggage basket comprises: a return conveyor line and a lowering mechanism; the return conveyor line comprises an upstream end and a downstream end opposite the upstream end; a lowering mechanism disposed above the upstream end for placing an empty luggage frame at the upstream end; the upstream end is used for being arranged on the outlet side of the security inspection machine, the downstream end is used for being arranged on the inlet side of the security inspection machine, and the conveying direction of the return conveying line is from the upstream end to the downstream end. The automatic luggage basket of retrieving is realized to this recovery unit, reduces security check staff's intensity of labour.

Description

Luggage basket recovery device and control method thereof

Technical Field

The invention relates to a luggage basket recovery device and a control method thereof.

Background

At present, in places needing security check, such as airports, subways or railway stations, and the like, because the existing security check efficiency is low, a large number of passengers often gather at a security check system, and a large amount of time is wasted.

In a traditional passenger carry-on luggage security check system, passengers take luggage away after passing a check. The security personnel need to constantly collect empty luggage baskets at the tail of the security check machine and carry the empty luggage baskets to the front end of the security check machine for passengers to use. The mode not only increases the labor intensity of security check workers and has low working efficiency, but also can prolong the waiting time of passengers due to the human factors of the workers.

The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

A main object of the present invention is to overcome at least one of the above-mentioned drawbacks of the prior art, and to provide a recycling device for luggage baskets, comprising:

a return conveyor line comprising an upstream end and a downstream end opposite the upstream end; and

a lowering mechanism comprising

The screw rods are vertically arranged above the upstream end and can rotate around the axes of the screw rods;

the transmission mechanism is in transmission connection with each screw rod;

the descending driving mechanism is in transmission connection with the transmission mechanism and is used for driving the plurality of screw rods to synchronously rotate through the transmission mechanism;

the screw rods can perform the action of conveying empty luggage baskets to the return conveying line when rotating synchronously, the upstream end is arranged on the outlet side of the security inspection machine, the downstream end is arranged on the inlet side of the security inspection machine, and the conveying direction of the return conveying line is from the upstream end to the downstream end.

According to an embodiment of the invention, further comprising a control unit;

the control unit comprises a controller, a servo controller and a plurality of roller driving cards;

the controller is respectively and electrically connected with the servo controller and the plurality of roller driving cards, the servo controller is electrically connected with the descending mechanism, the roller driving cards are electrically connected with the return conveying line, and the descending driving mechanism is connected with the servo controller.

According to one embodiment of the invention, the screw comprises a vertically arranged rod body and a helical tooth spirally extending from one end to the other end of the rod body, wherein the pitch of the helical tooth is gradually increased in the direction from top to bottom.

According to one embodiment of the invention, the roller drive cards are connected to the controller by ethernet cables.

According to one embodiment of the invention, the drum driving device further comprises an emergency stop button, wherein the emergency stop button is arranged on a power supply line between the power supply and the drum driving card.

According to one embodiment of the invention, the recycling device further comprises a detection component and a control unit;

the control unit is respectively connected with the return conveying line, the descending mechanism and the detection assembly;

the detection assembly is used for detecting whether an empty luggage basket is arranged on the descending mechanism and whether an empty luggage basket is arranged below the descending mechanism;

the control unit is configured to control the descending mechanism to place the empty luggage basket on the descending mechanism onto the return conveyor line and then control the return conveyor line to transport the empty luggage basket to the entrance side of the security inspection machine when the detection assembly detects that the empty luggage basket is on the descending mechanism and the empty luggage basket is not on the lower side of the descending mechanism.

According to one embodiment of the invention, the return conveyor line comprises a plurality of electrically driven rollers connected together in sequence, the speed of each electrically driven roller being individually controllable.

According to one embodiment of the invention, the detection assembly is also used for detecting whether an empty luggage basket enters each electric roller;

the control unit is also configured to enable the return conveying line to be dormant and standby when the detection assembly detects that any one of the electric rollers has no empty luggage basket entering the detection assembly within a second preset time.

According to an embodiment of the present invention, the detection assembly is further configured to detect whether a distance between two adjacent empty luggage baskets on the return conveyor line is less than a preset distance;

the control unit is configured to control the return conveying line to suspend conveying of a later one of the two empty luggage frames when the detection assembly detects that the distance between two adjacent empty luggage baskets on the return conveying line is smaller than a preset distance until the distance between the two empty luggage baskets reaches the preset value.

According to one embodiment of the invention, the detection assembly is further used for detecting whether a basket is blocked on any section of the return conveying line;

the control unit is also configured to immediately stop the operation of the return conveying line and send a basket blocking prompt when the detection assembly detects that a basket is blocked on any section of the return conveying line in the awakening state of the return conveying line.

According to one embodiment of the invention, the return conveyor line is straight and arranged below the security inspection machine.

The invention also provides a control method of the recovery device, which is implemented based on the recovery device and comprises the following steps:

receiving a signal to be recovered of an empty frame, and judging whether an empty luggage basket is arranged below the descending mechanism;

when the empty luggage basket is not arranged below the descending mechanism, the empty luggage basket on the descending mechanism is controlled to be placed on the return conveying line;

and if the empty luggage basket is arranged below the descending mechanism, judging whether the empty luggage basket is arranged below the descending mechanism again at intervals of first preset time.

According to an embodiment of the present invention, the control method further includes:

starting timing when an empty luggage basket reaches a first preset position of the return conveying line;

obtaining the current walking distance of the empty luggage basket within the timing duration according to the timing duration and the transportation speed of the empty luggage basket;

if the current walking distance is larger than or equal to the preset distance, the next empty basket does not pass through the second preset position, and the next empty basket directly passes through the second preset position;

and if the current walking distance is smaller than the preset distance, the next empty luggage basket reaches the second preset position, the next empty luggage basket stays at the second preset position, and the next empty luggage basket does not move forward until the sum of the distance between the previous empty luggage basket and the next empty luggage basket and the current walking distance is larger than the preset distance.

According to the technical scheme, the recovery device has the advantages and positive effects that:

before the luggage is put in the security inspection machine, people take an empty luggage basket at the inlet side of the security inspection machine, load the luggage basket with the personal luggage items, then place the luggage basket at the inlet of the security inspection machine, the security inspection machine automatically transports the luggage basket into the security inspection machine for scanning, after the scanning is completed, the security inspection machine sends the luggage basket out of the security inspection machine from the outlet of the security inspection machine, then the personal luggage items are taken out of the luggage basket by people, the empty luggage basket can be transported to the inlet side of the security inspection machine from the outlet side of the security inspection machine by a luggage conveying device, and the subsequently coming people can select the empty luggage basket again to load the personal luggage items for security inspection. Therefore, the automatic recovery of the luggage basket is realized, and the labor intensity of security check workers is reduced.

Drawings

Various objects, features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

fig. 1 is a schematic view of a recycling apparatus for a luggage basket according to an exemplary embodiment;

FIG. 2 is a schematic diagram illustrating the structure of a control unit according to an exemplary embodiment;

FIG. 3 is a perspective schematic view of a descent mechanism shown in accordance with an exemplary embodiment;

FIG. 4 is a schematic perspective view of a descent mechanism shown in accordance with an exemplary embodiment;

FIG. 5 is a schematic diagram illustrating electrical connections of a return transmission line according to one exemplary embodiment;

FIG. 6 is a schematic diagram illustrating electrical connections of a descent mechanism, according to an exemplary embodiment;

FIG. 7 is a flow chart illustrating a control method according to an exemplary embodiment;

FIG. 8 illustrates a schematic view of empty baskets M1, M2 having sufficient distance between them, according to an exemplary embodiment;

fig. 9 shows a schematic view of an empty basket M1, M2 without sufficient distance between them, according to an exemplary embodiment.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Referring to fig. 1, a security inspection machine 1 is provided with an inlet 11 and an outlet 12, the inlet 11 and the outlet 12 being respectively provided at opposite sides of the security inspection machine 1. A conveyor is also provided within the security inspection machine 1 extending from the inlet 11 to the outlet 12. A baggage basket with baggage is placed at the entrance 11, the conveyor can convey the baggage basket and the baggage therein into the security check machine 1 for scanning, and finally the scanned baggage basket and the baggage therein are output from the exit 12 of the security check machine 1.

A platform 2 is typically provided at the exit 12 of the security inspection machine 1. The platform 2 may be a bar-shaped platform 2. The platform 2 comprises a table top, which may be a horizontal rectangular flat plate. One end of the table top is butted with a conveyor at the outlet 12 of the security inspection machine 1. After the luggage basket output from the outlet 12 of the security inspection machine 1 enters the table top, the table top can temporarily store the luggage basket so that people have enough time to take out the luggage from the luggage basket.

The luggage basket recovery device 3 is disposed below the security inspection machine 1. The basket retrieval apparatus 3 includes a lowering mechanism 31, a return conveyor line 32, a detection assembly 34 and a control unit 35. The lowering mechanism 31 may be provided at an end of the platform 2 facing away from the security check machine 1. After the person has taken the baggage from the baggage basket on the platform 2, the empty basket is placed on the lowering mechanism 31, and the lowering mechanism 31 can transfer the baggage basket in the empty basket retrieving area to the return conveyor line 32.

In the present embodiment, referring to fig. 3, the descent mechanism 31 includes a descent actuator 312 and a descent drive mechanism 311. The lowering drive mechanism 311 may be a servo motor. The servo motor is electrically connected to the control unit 35 to receive a control signal from the control unit 35. The servo motor is drivingly connected to the lowering actuator 312 and powers the lowering actuator 312 to cause the lowering actuator 312 to carry the empty baskets to the return conveyor line 32.

In the present embodiment, referring to fig. 4, the lowering actuator 312 includes a transmission mechanism 3121 and a plurality of screws 3122. The plurality of screw rods 3122 are all vertically arranged and can rotate around the axes of the screw rods. A plurality of screws 3122 are disposed above the upstream end of the backpass conveyor line 32. The number of the screws 3122 may be four. The transmission mechanism 3121 connects the descent drive mechanism 311 and each screw 3122. The transmission mechanism 3121 is used to transmit the torque output by the descending driving mechanism 311 to each screw 3122 to drive all the screws 3122 to rotate synchronously. The screw 3122 includes a rod 3129 and a helical tooth 3120. The rod 3129 is a vertically disposed cylindrical shape. The spiral teeth 3120 spirally extend from one end to the other end of the rod 3129. The spiral teeth 3120 of the threaded rods 3122 can support the edge of the luggage basket, the spiral teeth 3120 of the threaded rods 3122 support the luggage basket from the two opposite sides of the luggage basket, and the two opposite sides of the luggage basket can be synchronously guided downwards by the threaded rods 3122 when the threaded rods 3122 rotate synchronously, so that the luggage basket can descend stably and finally fall onto the return conveying line 32.

The transmission mechanism 3121 includes a first steering case 3123, a second steering case 3124, a third steering case 3125, a fourth steering case 3126, a first connecting rod 3127, and a second connecting rod 3128.

The first steering box 3123 is provided with one input shaft and two output shafts. The input shaft of the first steering case 3123 faces upward and is connected to the main shaft of the descent drive mechanism 311. Two output shafts of the first steering box 3123 respectively extend from the opposite sides of the first steering box 3123 in directions away from each other, and the two output shafts are coaxially arranged.

The second steering box 3124 is provided with two, and both the second steering boxes 3124 have one input shaft and one output shaft. The first steering box 3123 is disposed between the two second steering boxes 3124. The two output shafts of the first steering case 3123 protrude in the direction of the second steering case 3124, respectively. The input shafts of the two second steering boxes 3124 both output in the direction of the first steering box 3123, and are both provided coaxially with the output shaft of the first steering box 3123. The first connecting rods 3127 are provided in two, and the two first connecting rods 3127 respectively connect the two output shafts of the first steering case 3123 and the input shafts of the two second steering cases 3124. The output shafts of the two second steering boxes 3124 project in a direction perpendicular to the input shafts thereof, and the projecting directions are the same.

The third steering box 3125 is provided with two. The two third steering boxes 3125 are each provided with one input shaft and two output shafts. The input shafts of the two third steering boxes 3125 are respectively arranged coaxially with the output shafts of the two second steering boxes 3124, and the input shafts of the two third steering boxes 3125 are both connected to the output shafts of the two second steering boxes 3124. One output shaft of the third steering box 3125 extends upward and is fixedly connected with a screw 3122, and the other output shaft is coaxially arranged with the input shaft of the third steering box 3125.

The fourth steering case 3126 is provided with two. Both the fourth steering boxes 3126 are provided with an input shaft and an output shaft. The input shafts of the two fourth steering boxes 3126 are respectively provided coaxially with the output shafts of the two third steering boxes 3125 which are not connected to the screw 3122. The second connecting link 3128 is provided with two. The two second connecting rods 3128 connect the input shafts of the two fourth steering boxes 3126 and the output shafts of the two third steering boxes 3125, respectively. The input shaft of the fourth steering case 3126 extends upward and is fixedly connected to a screw 3122.

Therefore, the torque of the descending drive mechanism 311 is input from the input shaft of the first steering box and transmitted to the input shafts of the two second steering boxes 3124, and is transmitted from the output shafts of the two second steering boxes 3124 to the input shafts of the two third steering boxes 3125 and the two screw rods 3122 of the third steering box 3125, and is transmitted from the output shafts of the two third steering boxes 3125 to the two screw rods 3122 of the two fourth steering boxes 3126. Thereby, the synchronous rotation of the four screws 3122 is realized.

In the present embodiment, the pitch of the spiral teeth 3120 is gradually increased in the top-to-bottom direction. Therefore, the descending speed of the luggage basket is slow at the upper section with smaller screw pitch, the descending speed of the luggage basket is fast at the lower section with larger screw pitch, and the descending speed of the luggage basket is smoothly increased, so that the speed of conveying the luggage basket is ensured in favor of the screw 3122 to convey the luggage basket smoothly.

The transfer line 32 comprises a plurality of motorized rollers 323. The return conveyor line 32 may be a straight strip and is disposed below the security inspection machine 1. A plurality of motorized rollers 323 are arranged in sequence. In this embodiment, the plurality of electric rollers 323 have the same conveying direction, and the plurality of electric rollers 323 are linearly arranged. The return transport line 32 is electrically connected to a control unit 35. The return conveyor line 32 is arranged below the security inspection machine 1. The return transport line 32 includes an upstream end 321 and a downstream end 322 opposite the upstream end 321. The return conveyor line 32 is transported in a direction from an upstream end 321 to a downstream end 322. The downstream end 322 of the return conveyance line 32 is located on the inlet side of the security inspection machine 1, and the upstream end 321 of the return conveyance line 32 is located on the outlet side of the security inspection machine 1. The upstream end 321 of the return conveyor line 32 extends below the lowering mechanism 31. After the lowering mechanism 31 places the empty baggage basket at the upstream end 321 of the return conveyor line 32, the return conveyor line 32 transports the empty baggage basket from the exit side of the security check machine 1 to the entrance side of the security check machine 1.

The detection assembly 34 has a plurality of sensors therein for detecting the position of the luggage basket. These sensors may be photosensors. These sensors are connected to the control unit 35 and send the detection results to the control unit 35.

In this embodiment, referring to fig. 2 and 5, the control unit 35 includes a controller 351, a servo controller 353, and a plurality of roller drive cards 352. The controller 351 is a logic control unit 35, and is preferably a PLC controller 351. The controller 351 is connected to the servo controller 353 and the linear transport velocity controller 351. The servo controller 353 is electrically connected to the descent drive mechanism 311, and the controller 351 drives the servo motor through the servo controller 353. The number of the roller driving cards 352 is the same as that of the electric rollers 323, the roller driving cards 352 are arranged corresponding to the electric rollers 323, and the roller driving cards are electrically connected with the corresponding electric rollers 323. The controller 351 controls the speed of the motorized roller 323 corresponding to the roller drive card 352 via the roller drive card 352, thereby achieving a staged control of the speed of the backtransfer conveyor line 32.

The detection assembly 34 is used for detecting whether an empty luggage basket is arranged on the descending mechanism 31 and whether an empty luggage basket is arranged below the descending mechanism 31;

the control unit 35 is configured such that when the detection module 34 detects that there is an empty basket on the descending mechanism 31 and there is no empty basket below the descending mechanism 31, the control unit 35 controls the descending mechanism 31 to place the empty basket on the descending mechanism 31 onto the return conveyor line 32, and then controls the return conveyor line 32 to transport the empty basket to the entrance side of the security inspection machine 1.

The specific control method in the control unit 35 includes the steps of:

step S1 a: receiving an empty frame signal to be recovered;

referring to fig. 3, the sensing assembly 34 includes a first sensor 321. The first sensor 321 may be a photosensor. A first sensor 321 is disposed above the lowering actuator 312 for detecting whether an empty basket is present on the lowering actuator 312. When there is an empty basket on the lowering actuator 312, the first sensor 321 is triggered, and the first sensor 321 can send an empty frame to be recovered signal to the control unit 35.

After receiving the empty frame to-be-recovered signal, the control unit 35 can obtain information that an empty basket is present on the lowering actuator 312 according to the empty frame to-be-recovered signal.

Step S2 a: judging whether an empty luggage basket is arranged below the descending mechanism 31, if so, going to step S3a, otherwise, going to step S4 a;

the detection assembly 34 also includes a second sensor 342. The second sensor 342 may be a photosensor. A second sensor 342 is provided between the lowering actuator 312 and the return conveyor line 32 for detecting whether an empty basket is present on the return conveyor line 32 directly below the lowering actuator 312 and, if so, for continuously sending a prompt signal to the control unit 35.

Upon receiving the prompt, control unit 35 can obtain information that there is an empty basket below lowering actuator 312 based on the prompt.

Step S3 a: after waiting for the first preset time, the process again proceeds to step S2 a;

the first predetermined time is manually set and may be as long as the return conveyor line 32 takes to transport an empty basket from beneath the drop actuator 312. After waiting for the first predetermined time, it is determined again whether there is an empty basket below the drop actuator 312, so that it is possible to prevent the drop actuator 312 from interfering with an empty basket below the drop actuator 312 when there is an empty basket below the drop actuator 312.

Step S4 a: the lowering drive mechanism 311 is controlled to place the empty basket on the lowering actuator 312 onto the return conveyor line 32.

After this step, the control unit 35 also controls the lowering actuator 312 to place the empty basket on the return conveyor line 32 and then return to the home position to wait for the next empty basket to be received. After the lowering actuator 312 is returned to the home position, one may place the next empty basket on the lowering actuator 312 for retrieval of the next empty basket.

Step S5 a: the return conveyor line 32 is controlled to transport the empty baggage basket to the entrance side of the security check machine 1.

After the lowering mechanism 31 places an empty basket to the upstream end 321 of the return conveyor line 32, the control unit 35 controls the return conveyor line 32 to transport the empty basket from the upstream end 321 thereof to the downstream end 322 thereof so that the empty basket is transported to the inlet side of the security inspection machine 1.

Before passing the baggage through the security check machine 1, a person takes an empty baggage basket located at the entrance side of the security check machine 1 and loads its carry-on baggage items with the basket, then places the baggage basket at the entrance 11 of the security check machine 1, the security check machine 1 automatically transports the baggage basket into the security check machine 1 for scanning, after the scanning is completed, the security check machine 1 delivers the baggage basket out of the security check machine 1 from the exit 12 thereof, and subsequently the carry-on baggage items are taken out of the baggage basket by a person, the empty baggage basket can be transported by the baggage transport device from the exit side of the security check machine 1 to the entrance side of the security check machine 1, and subsequently arriving persons can again select the empty baggage basket for loading the carry-on baggage items for security check. Therefore, the automatic recovery of the luggage basket is realized, and the labor intensity of security check workers is reduced.

Further, the recycling apparatus 3 further includes a bag placing table 33. The deposit table 33 is disposed on the inlet side of the security inspection machine 1 and is connected to the downstream end 322 of the return conveyor line 32. Empty luggage baskets on the return conveyor line 32 are fed from the downstream end 322 of the return conveyor line 32 to the packing table 33. The bag placing table 33 has a plurality of basket taking positions 331. Empty baskets entering the placing station 33 are automatically assigned to the basket-taking station 331. A person requiring a basket to be loaded with luggage may remove an empty basket from the basket access location 331.

The detection assembly 34 also includes a plurality of third sensors 343. The third sensor 343 may be a photosensor. The third sensors 343 are disposed in one-to-one correspondence with the basket taking positions 331, the third sensors 343 are disposed in the corresponding basket taking positions 331, and each third sensor 343 is configured to measure whether an empty luggage basket is present in the basket taking position 331. When an empty basket is present in the basket-taking position 331, the corresponding third sensor 343 is continuously triggered, and the third sensor 343 continuously sends a full signal to the control unit 35. The duration that the control unit 35 receives the full signal indicates that there is an empty basket in the corresponding basket-taking bit 331. The time period during which the control unit 35 does not receive the full signal indicates that there is no empty baggage in the corresponding basket access location 331.

Further, the detection assembly 34 is also used to detect whether an empty luggage basket enters each motorized roller 323. The control unit 35 is further configured to sleep the return conveyor line 32 in standby when the detection assembly 34 detects that none of the motorized rollers 323 has an empty basket entered therein for a second predetermined time.

The detection assembly 34 also includes a plurality of fourth sensors 344. The fourth sensor 344 may be a photosensor. The fourth sensors 344 are each electrically connected to the control unit 35. The fourth sensors 344 are provided in one-to-one correspondence with the electric rollers 323. The fourth sensor 344 may be disposed at the upstream end 321 of its corresponding motorized roller 323. The fourth sensor 344 is used to detect whether an empty basket has entered the motorized roller 323 corresponding thereto. When the fourth sensor 344 is triggered, the fourth sensor 344 sends a start signal to the control unit 35, and the control unit 35 receives the start signal and can obtain information that an empty basket enters the electric roller 323 corresponding to the fourth sensor 344.

The specific control method in the control unit 35 further includes the steps of:

step S1 b: in response to any of the fourth sensors 344 being triggered, the timer restarts counting.

Step S2 b: when the duration recorded by the timer reaches a second preset time, the whole piece of the return transmission line 32 is dormant and standby.

The length of the second preset time may be selected according to the actual working condition, and may be 20 seconds, for example. When any one of the motorized rollers 323 is detected to have no empty luggage basket entered therein within a second preset time, the return conveyor line 32 is put to sleep and standby. This prevents the return conveyor line 32 from idling for a long time, thereby achieving the purpose of energy saving.

Preferably, the whole return conveyor line 32 is put into a dormant standby state in sequence from the electric roller 323 at the downstream side to the electric roller 323 at the upstream side.

Further, the control unit 35 is configured to wake up the return conveyor line 32 again when the detection assembly 34 detects that an empty basket in any one of the basket taking positions 331 of the placing table 33 is taken away or detects that an empty basket is on the lowering actuator 312 while the return conveyor line 32 is in the dormant standby state.

When the first sensor 321 is triggered or any one of the third sensors 343 changes from the triggered state to the non-triggered state, indicating that the first sensor 321 detects an empty basket on the lowering actuator 312 or the third sensor 343 detects that an empty basket in the basket-taking position 331 is taken away, the empty baskets will need to be returned to the packing table 33, so that the return conveyor line 32 can be restarted in time to collect the empty basket that is about to arrive.

Further, the detecting module 34 is also used for detecting whether the distance between two adjacent empty baskets on the return conveyor line 32 is smaller than a preset distance. The control unit 35 is configured to control the return conveyor line 32 to suspend conveying the next one of the two empty baskets until the distance between the two empty baskets reaches the preset value, when the detection assembly 34 detects that the distance between two adjacent empty baskets on the return conveyor line 32 is smaller than the preset distance.

Referring to fig. 8 and 9, the detection assembly 34 further includes a fifth sensor 345 and a sixth sensor 346, both connected to the control unit 35. The fifth sensor 345 and the sixth sensor 346 may both be photosensors. A fifth sensor 345 and a sixth sensor 346 are both disposed on one side of the return conveyor line 32. A fifth sensor 345 is provided for detecting the arrival of an empty basket at a first predetermined position on the return conveyor line 32 and a sixth sensor 346 is provided for detecting the arrival of an empty basket at a second predetermined position on the return conveyor line 32, wherein the first predetermined position is downstream of the second predetermined position. The first preset position may be below the entrance 11 of the security inspection machine 1. The fifth sensor 345 can be triggered when an empty basket passes a first preset position. The sixth sensor 346 can be triggered when an empty basket passes a second preset position.

Referring to fig. 7, the specific control method in the control unit 35 further includes the steps of:

step S1 c: when an empty luggage basket M1 reaches a first preset position, starting timing;

when the fifth sensor 345 is triggered by an empty basket M1, a timer in the control unit 35 starts counting.

Step S2 c: obtaining the current walking distance S of the empty basket M1 within the timing duration T according to the timing duration T and the transportation speed V of the empty basket M1;

the current walking distance S is equal to the product of the timing duration T and the transport speed V, i.e., the distance traveled by the empty basket M1 after triggering the fifth sensor 345.

Step S3 c: judging whether the current walking distance S is greater than or equal to the preset distance d and the next empty luggage basket M2 does not pass through the second preset position in real time, if so, entering a step S4c, and if not, entering a step S5 c;

in this step, if the sixth sensor 346 is not triggered by the next empty basket M2 all the time during the current walking distance S gradually increases from zero to the preset distance d, it indicates that the next empty basket M2 has not passed the second preset position when the current walking distance S is greater than or equal to the preset distance d. If the sixth sensor 346 is triggered by the next empty basket M2 during the gradual increase of the current walking distance S from zero to the preset distance d, it indicates that the next empty basket M2 has passed the second preset position when the current walking distance S is less than the preset distance d.

Step S4 c: the next empty luggage basket M2 passes directly through the second preset position.

Referring to fig. 8, in this step, the next empty basket M2 continues to advance toward the first preset position without staying at the second preset position.

Step S5 c: the next empty basket M2 stays at the second predetermined position until the next empty basket M2 continues to advance when the sum of the distance S1 between the previous empty basket M1 and the next empty basket M2 and the current travel distance S is greater than the predetermined distance d;

referring to fig. 9, in this step, the distance S1 between the previous empty basket M1 and the next empty basket M2 is equal to the distance Q between the first preset position and the second preset position minus the difference between the length L of the empty basket M1 and the current walking distance S, i.e., S1 — Q- (L-S).

The next empty basket M2 stays at the second predetermined position until the sum of S1 and S is greater than the predetermined distance d, and then continues to advance to the first predetermined position, so that a sufficient distance can be maintained between two adjacent empty baskets.

Further, the detection module 34 is also used to detect whether a basket jam has occurred on any section of the return conveyor line 32. The control unit 35 is further configured to immediately stop the return conveyor line 32 and issue a basket jam notification when the detection module 34 detects a basket jam on any section of the return conveyor line 32 while the return conveyor line 32 is in the wake-up state.

When the fourth sensor 344 is continuously triggered to reach the preset threshold, it can be considered that the electric drum 323 corresponding to the fourth sensor 344 is blocked by an empty basket.

When the detection module 34 detects that the time period during which any of the fourth sensors 344 is continuously triggered reaches a preset threshold, it determines whether the backhaul transmission line 32 is in a wake-up state; if the return transmission line 32 is in the awakening state, the return transmission line 32 stops running and a basket blocking prompt is issued; if the return transport line 32 is dormant, no action is taken.

The safety inspector can clean the blocked basket in time after seeing the basket blocking prompt. When the safety inspector has cleared the jammed basket, the control unit 35 starts the return conveying line 32 again.

Further, at the start of the backtransfer line 32, the motorized rollers 323 are activated sequentially from the downstream end 322 to the upstream end 321 of the backtransfer line 32.

Further, the recovery device 3 comprises an emergency stop button. The emergency stop button is used to cut power to the return transmission line 32. The emergency stop button is provided on the power line between the power source and the drum drive card 352. In the event of an emergency situation, such as a mechanical failure, pressing the emergency stop button can cut off the power to the roll drive card 352 and cause the return conveyor line 32 to stop urgently. After the emergency situation is resolved, power to the drum drive card 352 is restored by releasing the emergency stop button.

After the roller driving card 352 is powered back, the roller driving card 352 does not drive the return transmission line 32 to operate, and the return transmission line 32 is normally started to operate after the emergency fault is reset.

Further, the plurality of fourth sensors 344 are electrically connected to a plurality of roll drive cards 352, respectively, each roll drive card 352 being connected to the controller 351 via an ethernet cable 354. Each roller drive card 352 is also electrically connected to the motorized roller 323 of the backtransfer conveyor line 32 that it drives.

Although the present invention has been disclosed with reference to certain embodiments, numerous variations and modifications may be made to the described embodiments without departing from the scope and ambit of the present invention. It is to be understood, therefore, that this invention is not limited to the particular embodiments disclosed, but it is intended to cover modifications within the scope of the appended claims and their equivalents.

Claims

1. A recycling apparatus for luggage baskets, comprising:

a lowering mechanism comprising

the transmission mechanism is in transmission connection with each screw rod;

2. The recycling apparatus according to claim 1, further comprising a control unit;

3. The recycling apparatus according to claim 1, wherein said screw comprises a vertically disposed rod and a helical tooth spirally extending from one end to the other end of said rod, wherein the pitch of said helical tooth increases gradually in a direction from top to bottom.

4. The recycling apparatus according to claim 2, wherein the roller drive card is connected to the controller by an ethernet cable.

5. The recycling apparatus according to claim 4, further comprising an emergency stop button disposed on a power line between the power source and the drum drive card.

6. The recycling apparatus according to claim 1, further comprising a detection assembly and a control unit;

7. A recycling apparatus according to claim 6, characterized in that the return conveyor line comprises a plurality of motorized rollers connected together in sequence, the speed of each motorized roller being individually controllable.

8. The recycling apparatus according to claim 7, wherein the detecting assembly is further adapted to detect whether an empty luggage basket enters each motorized roller;

9. The recycling apparatus according to claim 6, wherein the detection assembly is further configured to detect whether a distance between two adjacent empty baskets on the return conveyor line is less than a predetermined distance;

10. The recycling apparatus according to claim 6, wherein the detecting module is further configured to detect whether a basket is jammed on any section of the return conveyor line;

11. The recycling apparatus according to claim 1, wherein the return conveyor line is straight and arranged below the security inspection machine.

12. A control method of a recycling apparatus, characterized in that the control method is implemented based on the recycling apparatus according to any one of claims 1 to 11, the control method comprising:

13. The control method according to claim 12, characterized by further comprising: