CN211686667U

CN211686667U - Domestic intelligent classification dustbin

Info

Publication number: CN211686667U
Application number: CN201922043907.7U
Authority: CN
Inventors: 金月梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-10-16
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a domestic intelligent classification dustbin, which comprises an outer shell, at least two inner bin holes are arranged on an outer shell roof, the upper part of each inner bin hole is vertically and fixedly connected with a middle layer cover with the outer shell roof, an inner bin is arranged at the lower part in the middle layer cover, the outer shell roof is movably connected with an upper cover through an opening and closing device corresponding to a middle layer cover opening, the opening and closing device is connected with a motor, the motor is connected with a control module, the control module is connected with a garbage classification identification and judgment module, the control module is arranged at the inner side of a rear side plate of the outer shell, the garbage classification identification and judgment module is arranged at the inner side of a front side plate of the outer shell, and a; the garbage classification recognition and judgment module comprises a voice recognition and judgment module and an image processing and judgment module. The utility model has compact structure, two garbage classification and identification modes, and increases the garbage identifiability; the setting of rubbish classification interlocking module can prevent that other pronunciation from causing the interference to speech recognition in the surrounding environment, improves rubbish classification's accuracy.

Description

Domestic intelligent classification dustbin

Technical Field

The utility model relates to a dustbin technical field, in particular to domestic intelligent classification dustbin.

Background

In our daily life, different types of waste are produced. Different garbage is put together, so that the garbage sorting pressure is increased, the garbage recycling cost is increased, and the ecological environment is seriously threatened. In the past, people generally utilize propaganda and moral strength to push garbage classification and putting, but the effect is not good. In 2019, 7 and 1, the official implementation of the 'Shanghai municipal domestic waste management regulation' starts the times of the mandatory requirement of classified garbage throwing.

However, it is difficult to strictly define to which category the garbage thrown belongs, because of the variety of the garbage. The garbage can which is researched by a patent with the patent number of 201910104588.8 and named as a household intelligent classification garbage can device and a control method thereof collects garbage related contents of voice through a voice collection unit of a voice control mechanism, carries out standardization processing and identification, obtains identified information through a controller, and selects any inner barrel corresponding to classification according to an instruction of a trigger mechanism. Although the function of controlling the opening of the garbage can through voice recognition is realized, most of the time, the garbage thrown by people is not single garbage, and the names of partial garbage cannot be accurately spoken, so that the convenience and accuracy of garbage classification cannot be realized through simple voice recognition. Meanwhile, the garbage throwing device is easily influenced by other voices of the surrounding environment when throwing garbage, if other voices appear when throwing garbage, the garbage buckets of different types can be opened simultaneously, and the certainty and the accuracy of garbage classified throwing are influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the existing research, the utility model provides the household intelligent classification dustbin which has simple structure and ingenious design, is clean and sanitary for throwing the garbage and can accurately classify the garbage at home; the two garbage classification and identification modes increase the identifiability of garbage and make garbage classification more convenient and accurate; the setting of rubbish classification interlocking module can prevent that other pronunciation from causing the interference to speech recognition in the surrounding environment, improves rubbish classification's accuracy. In order to achieve the above-mentioned functions, the above technical problems of the present invention can be solved mainly by the following technical solutions:

the utility model provides a household intelligent classification dustbin, which comprises an outer shell, at least two inner bin holes are arranged on a top plate of the outer shell, the upper part of each inner bin hole is fixedly connected with a middle layer cover perpendicular to the top plate of the outer shell, an inner bin is arranged at the lower part in the middle layer cover, the top plate of the outer shell is movably connected with an upper cover corresponding to a middle layer cover opening through an opening and closing device, the opening and closing device is connected with a motor, the motor is connected with a control module, the control module is connected with a garbage classification identification and judgment module, the control module is arranged at the inner side of a rear side plate of the outer shell, the garbage classification and judgment module is arranged at the inner side of a front side plate of the;

the opening and closing device of each inner bin upper cover corresponds to a motor, and when the motors are connected with a power supply, the motors rotate and drive the opening and closing devices to open the upper covers of the corresponding inner bins.

The arrangement of the middle layer cover enables the structure of the inner bin and the shell to be more compact and stable.

Furthermore, the control module comprises a garbage classification interlocking module, a limiting module, a power supply switching module, an opening degree keeping module and a time delay module, the power supply switching module is respectively connected with the garbage classification interlocking module, the limiting module, the opening degree keeping module and the time delay module, and the limiting module is respectively connected with the opening degree keeping module and the time delay module.

The power supply switching module is used for switching on a power supply and a corresponding motor according to the garbage classification identified by the garbage classification identification and judgment module, and the motor starts to rotate to drive the opening and closing device to open the upper cover of the corresponding inner bin; meanwhile, the garbage classification interlocking module locks the upper cover control loops of the other types of garbage inner bins, so that the situation that the correct garbage throwing is influenced because the upper covers of the different types of garbage inner bins are opened at the same time is prevented; when the upper cover is opened to a set opening degree, the limiting module starts the power supply switching module to cut off the connection between the motor and the power supply and cut the power supply to be connected with the opening degree keeping module; meanwhile, the time delay module is started to start timing, after a second, the time delay module starts the power supply switching module to cut off the connection between the opening keeping module and the power supply, the upper cover automatically falls down under the action of gravity, the inner bin is covered, and the garbage smell in the inner bin is prevented from drifting around to pollute the indoor environment.

Furthermore, the garbage classification recognition and judgment module comprises a voice recognition and judgment module and an image processing and judgment module.

The garbage classification recognition mode comprises voice recognition and image recognition, so that more modes can be recognized, and the garbage classification is more convenient and accurate. The voice recognition judging module recognizes the voice of the person throwing the garbage and judges which type the thrown garbage belongs to according to the voice; the image processing and judging module identifies the garbage images and judges which type the thrown garbage belongs to according to the garbage images.

Furthermore, the voice recognition and judgment module comprises a microphone, an analog-to-digital conversion module and a voice judgment module, the microphone is connected with the analog-to-digital conversion module, the analog-to-digital conversion module is connected with the voice judgment module, and a microphone port penetrates through a microphone hole.

The microphone receives the voice of the garbage thrower, and transmits the received voice analog signal to the analog-to-digital conversion module, the analog signal of the analog-to-digital conversion module is converted into a digital signal, and the digital signal is transmitted to the voice judgment module, and the voice judgment module judges which type the garbage belongs to.

Furthermore, the image processing and judging module comprises an infrared scanning camera, an image processing module and an image judging module, the infrared scanning camera is connected with the image processing module, the image processing module is connected with the image judging module, and a port of the infrared scanning camera penetrates through the infrared camera hole.

The infrared scanning camera scans pre-thrown garbage and transmits scanned images to the image processing module, the image processing module converts the images into digital signals and transmits the digital signals to the image judging module, and the image judging module judges which type the garbage belongs to.

Furthermore, the opening and closing device comprises a box body, a gear speed reducer is arranged in the box body, a driven gear of the gear speed reducer is meshed with a transmission gear, the transmission gear is a steering arc gear, the transmission gear is fixedly connected with a connecting shaft, and the connecting shaft is fixedly connected with a connecting plate.

Further, a gear reducer is connected with the motor.

Further, the connecting plate is fixedly connected with the upper cover.

The opening and closing device adopts gear transmission, has simple structure, stable transmission, high reliability and high efficiency, and realizes smooth opening and closing.

In the process of opening the upper cover, the motor drives the gear reducer to rotate, a driven gear in the gear reducer drives the transmission gear to rotate, the transmission gear rotates to drive the connecting shaft to rotate, the connecting shaft rotates to drive the connecting plate to rotate, and the connecting plate drives the upper cover to rotate to open.

Further, interior storehouse is including recoverable interior storehouse and the interior storehouse of can not retrieving at least, and open on the curb plate around the interior storehouse and carry the hole, the upper end in interior storehouse is higher than the bottom that the middle level covered.

The inner bin at least comprises a recoverable inner bin and a non-recoverable inner bin.

Just classify rubbish through storehouse in recoverable and the interior storehouse of non-recoverable in indoor, begin to cultivate the categorised consciousness of rubbish from throwing away the rubbish source, form the good custom of rubbish classification, improve resident's environmental protection consciousness.

Lifting holes are arranged at the front side and the rear side of the inner bin. The lifting hole of the inner bin is arranged so that the inner bin can be conveniently lifted by hands when taken out.

The beneficial effects of the utility model.

1. The household intelligent classification garbage can comprises two garbage classification and recognition modes, can respectively realize voice and image garbage recognition, can use the image recognition mode when the name is unknown, enables the garbage classification recognition modes to be more, increases the garbage identifiability, and enables the garbage classification to be more convenient and accurate.

2. This kind of domestic intelligent classification dustbin is equipped with the categorised interlocking module of rubbish, can prevent that the interior storehouse of different grade type rubbish from opening simultaneously, avoids surrounding noise to influence the accuracy and puts in rubbish, improves the categorised accuracy of rubbish.

3. This kind of domestic intelligent classification dustbin upper cover is intelligent opens and closes, and the hand need not touch the box when puting in rubbish, and clean health is light laborsaving, and the upper cover is opened self-closing after puting in rubbish, can prevent effectively that the rubbish smell from wafting, is favorable to improving the room air quality.

4. The opening and closing device for the household intelligent classification dustbin adopts gear transmission, has the advantages of simple structure, stable transmission, high reliability and high efficiency, and realizes smooth opening and closing.

5. This kind of domestic intelligent classification dustbin simple structure, design benefit, the setting up of middle level cover makes interior storehouse and shell cooperation compacter firm, separates each other between the two interior storehouses of shell, storehouse mutually independent in the recoverable rubbish storehouse and the unrecoverable rubbish, even be domestic dustbin also clean health, just do good waste classification when being at and throwing away rubbish, need not classify concrete every rubbish again when going to the rubbish again, save worry more.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the household intelligent classification dustbin of the present invention;

fig. 2 is a schematic structural view of the present invention after the upper cover is removed on the basis of fig. 1;

fig. 3 is a schematic structural view of the housing of the household intelligent classification garbage can of the present invention;

fig. 4 is a schematic structural diagram of the present invention, after removing the side plates and the bottom plate of the housing on the basis of fig. 1;

fig. 5 is a schematic structural view of the garbage classification identification and judgment module, the control module, the motor and the opening and closing device of the household intelligent classification garbage can of the present invention;

fig. 6 is a schematic structural view of the upper cover and the opening and closing device of the household intelligent classification dustbin of the present invention;

fig. 7 is a schematic diagram of the overall control flow of the household intelligent classification garbage can of the present invention;

fig. 8 is a schematic flow chart of a control module of the household intelligent classification dustbin of the present invention;

fig. 9 is a schematic flow chart of the garbage classification, identification and judgment module of the household intelligent classification garbage can of the present invention;

fig. 10 is a detailed control flow diagram of the household intelligent classification garbage can of the present invention.

In the figure: 1. a housing; 11. a microphone aperture; 12. an infrared camera hole; 2. an inner bin hole; 3. a middle layer cover; 4. an inner bin; 41. lifting holes; 5. an opening and closing device; 51. a box body; 52. a gear reducer; 53. a transmission gear; 54. a connecting shaft; 55. A connecting plate; 6. an upper cover; 7. a motor; 8. a control module; 81. a garbage classification interlocking module; 82. a limiting module; 83. A power switching module; 84. an opening degree maintaining module; 85. a delay module; 9. a garbage classification identification judgment module; 91. a voice recognition judging module; 911. a microphone; 912. an analog-to-digital conversion module; 913. a voice judgment module; 92. an image processing and judging module; 921. an infrared scanning camera; 922. an image processing module; 923. and an image judgment module.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

As shown in fig. 1-10, the household intelligent classification garbage can in this embodiment includes a housing 1, a top plate of the housing 1 is provided with at least two inner bin holes 2, an upper portion of each inner bin hole 2 is vertically and fixedly connected with a middle layer cover 3, an inner bin 4 is installed at a lower portion of the middle layer cover 3, the top plate of the housing 1 is movably connected with an upper cover 6 corresponding to a mouth of the middle layer cover 3 through an opening and closing device 5, the opening and closing device 5 is connected with a motor 7, the motor 7 is connected with a control module 8, the control module 8 is connected with a garbage classification identification and judgment module 9, the control module 8 is arranged at an inner side of a rear side plate of the housing 1, the garbage classification identification and judgment module 9 is arranged at an inner side of a front side plate of the housing 1, and the front side plate of the;

the opening and closing device 5 of the upper cover 6 of each inner bin 4 corresponds to one motor 7, and when the motor 7 is connected with a power supply, the motor 7 rotates and drives the opening and closing device 5 to open the upper cover 6 of the corresponding inner bin 4.

The arrangement of the middle layer cover 3 makes the structure of the inner bin 4 and the shell 1 more compact and stable.

The control module 8 comprises a garbage classification interlocking module 81, a limiting module 82, a power supply switching module 83, an opening degree keeping module 84 and a time delay module 85, the power supply switching module 83 is respectively connected with the garbage classification interlocking module 81, the limiting module 82, the opening degree keeping module 84 and the time delay module 85, and the limiting module 82 is respectively connected with the opening degree keeping module 84 and the time delay module 85.

The power supply switching module 83 switches on the power supply and the corresponding motor 6 according to the garbage classification identified by the garbage classification identification and judgment module 9, and the motor 6 starts to rotate to drive the opening and closing device 7 to open the upper cover 2 of the corresponding inner bin 3; meanwhile, the garbage classification interlocking module 81 locks the control loops of the upper covers 2 of the other types of garbage inner bins 3, so that the upper covers 2 of the different types of garbage inner bins 3 are prevented from being opened at the same time, and the correct garbage throwing is prevented from being influenced; when the upper cover 2 is opened to a set opening, the limiting module 82 starts the power supply switching module 83 to cut off the connection between the motor 6 and the power supply, and switches the power supply to be connected with the opening keeping module 84; meanwhile, the time delay module 85 is started to start timing, after 15 seconds, the time delay module 85 starts the power supply switching module 83 to cut off the connection between the opening keeping module 84 and the power supply, the upper cover 2 automatically falls down under the action of gravity to cover the inner bin 3, and the garbage smell in the inner bin 3 is prevented from drifting around to pollute the indoor environment.

The garbage classification recognition judging module 9 includes a voice recognition judging module 91 and an image processing judging module 92.

The garbage classification recognition mode comprises voice recognition and image recognition, so that more modes can be recognized, and the garbage classification is more convenient and accurate. The voice recognition judging module 91 recognizes the voice of the person who throws the garbage and judges which kind of the thrown garbage belongs to according to the voice; the image processing and judging module 92 identifies the garbage image and judges which type the garbage put belongs to according to the garbage image.

The voice recognition and determination module 91 includes a microphone 911, an analog-to-digital conversion module 912, and a voice determination module 913, where the microphone 911 is connected to the analog-to-digital conversion module 912, the analog-to-digital conversion module 912 is connected to the voice determination module 913, and a port of the microphone 911 passes through the microphone hole 11.

The microphone 911 receives the voice of the garbage thrower and transmits the received voice analog signal to the analog-to-digital conversion module 912, the analog-to-digital conversion module 912 converts the analog signal into a digital signal and transmits the digital signal to the voice judgment module 913, and the voice judgment module 913 judges which type the garbage belongs to.

The analog-to-digital conversion module 912 of the speech recognition determination module 91 may adopt an ADC0804 module, and the speech determination module 913 may adopt an HBR640 module.

The image processing and judging module 92 comprises an infrared scanning camera 921, an image processing module 922 and an image judging module 923, the infrared scanning camera 921 is connected with the image processing module 922, the image processing module 922 is connected with the image judging module 923, and the port of the infrared scanning camera 921 passes through the infrared camera hole 12.

The infrared scanning camera 921 scans the garbage put in advance, and transmits the scanned image to the image processing module 923, the image processing module 923 converts the image into a digital signal, and transmits the digital signal to the image judgment module 923, and the image judgment module 923 judges which type the garbage belongs to.

The CMUCAM3 module may be adopted as the image processing module 922 in the image processing determining module 92, and the ZXM10 module may be adopted as the image determining module 923.

The opening and closing device 5 comprises a box body 51, a gear speed reducer 52 is arranged in the box body 51, a driven gear of the gear speed reducer 52 is meshed with a transmission gear 53, the transmission gear 53 is a steering arc gear, the transmission gear 53 is fixedly connected with a connecting shaft 54, and the connecting shaft 54 is fixedly connected with a connecting plate 55.

The gear reducer 52 is connected to the motor 7.

The connecting plate 55 is fixedly connected with the upper cover 6.

The opening and closing device 5 adopts gear transmission, has simple structure, stable transmission, high reliability and high efficiency, and realizes smooth opening and closing.

When the upper cover 6 is opened, the motor 7 drives the gear reducer 52 to rotate, the driven gear in the gear reducer 52 drives the transmission gear 53 to rotate, the transmission gear 53 rotates to drive the connecting shaft 52 to rotate, the connecting shaft rotates to drive the connecting plate 55 to rotate, and the connecting plate 55 drives the upper cover 6 to rotate to open.

Interior storehouse 4 is including recoverable interior storehouse and the interior storehouse of can not retrieving at least, and open on the curb plate around interior storehouse 4 and carry hole 41, the upper end in interior storehouse 4 is higher than the bottom of middle level cover 3.

Lifting holes 41 are arranged at the front side and the rear side of the inner bin 4. The lifting hole of the inner bin 4 is arranged so that the inner bin 4 can be conveniently lifted by a hand when the inner bin 4 is taken out.

The utility model discloses a theory of operation and process.

The garbage classification recognition and judgment module 9 comprises a voice mode and a graphic processing mode. One can choose which mode according to the specific needs. For example, when people need to throw garbage, people can know the correct name of the garbage, and can adopt a voice mode in the garbage classification judgment module 9. When the voice mode is adopted, a person speaks a correct name of garbage to be thrown into the microphone 911, the microphone 911 transmits an analog signal of received voice to the analog-to-digital conversion module 912, the analog-to-digital conversion module 912 converts the analog signal into a digital signal, and transmits the digital signal to the voice judgment module 913, and the voice judgment module 913 judges which type the garbage belongs to.

When the correct name of the garbage is not known, an image processing mode may be employed. When the image processing mode is adopted, people throwing garbage put the garbage at the front end of the infrared scanning camera 921, the infrared scanning camera 921 scans the garbage thrown in advance, the scanned image is transmitted to the image processing module 922, the image processing module 922 converts the image into a digital signal, the digital signal is transmitted to the image judging module 923, and the image judging module 923 judges which type the garbage belongs to.

The power supply switching module 83 switches on the power supply and the motor 7 of the corresponding garbage category opening and closing device 5 according to the garbage category identified and judged by the garbage classification identification and judgment module 9, and the motor 7 starts to rotate to drive the opening and closing device 5 to open the upper cover 6 of the corresponding inner bin 4; meanwhile, the garbage classification interlocking module 81 locks the control loops of the upper covers 6 of the other types of garbage inner bins 3, so that the upper covers 6 of the different types of garbage inner bins 4 are prevented from being opened at the same time to influence the correct garbage throwing; when the upper cover 6 is opened to a set opening, the limiting module 82 starts the power supply switching module 83 to cut off the connection between the motor 7 and the power supply, and switches the power supply to be connected with the opening keeping module 84; meanwhile, the time delay module 85 starts timing, after 15 seconds, the time delay module 85 starts the power supply switching module 83 to cut off the connection between the opening keeping module 84 and the power supply, and the upper cover 6 automatically falls down under the action of gravity to be closed with the inner bin 4, so that the smell in the dustbin is prevented from drifting around to influence the indoor air quality.

The household intelligent classification garbage can comprises two garbage classification and recognition modes, can respectively realize voice and image garbage recognition, can use the image recognition mode when the name is unknown, enables the garbage classification recognition modes to be more, increases the garbage identifiability, and enables the garbage classification to be more convenient and accurate.

This kind of domestic intelligent classification dustbin is equipped with waste classification interlocking module 81, can prevent that storehouse 3 from opening simultaneously in the different grade type rubbish, avoids the accurate rubbish of puting in of surrounding environment noise influence, improves waste classification's accuracy.

This kind of domestic intelligent classification dustbin upper cover 6 is intelligent opens and closes, and the hand need not touch the box when puting in rubbish, and clean health is light laborsaving, and upper cover 6 opens automatic closing after puting in rubbish, can prevent effectively that the rubbish smell from wafting, is favorable to improving the room air quality.

This kind of domestic intelligent classification dustbin device 5 that opens and shuts adopts gear drive, simple structure, and the transmission is steady, the reliability is high, and is efficient, realizes opening and closing smoothly.

This kind of domestic intelligent classification dustbin simple structure, design benefit, the setting up of middle level cover makes interior storehouse 4 and shell 1 cooperation compacter firm, separates each other between the storehouse 4 in 1 two on the shell, storehouse and the interior storehouse mutual independence of unrecoverable rubbish in the recoverable rubbish, even domestic dustbin is also clean health, just make waste classification when throwing away rubbish at home, need not classify concrete every rubbish again when going to fall rubbish again, save worry more.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides a domestic intelligent classification dustbin, includes shell (1), sets up bin hole (2) in two at least on shell (1) roof, its characterized in that: interior bin hole (2) upper portion and the perpendicular fixedly connected with middle level cover (3) of shell (1) roof, interior bin (4) are installed to the lower part in middle level cover (3), shell (1) roof corresponds swing joint through opening and shutting device (5) and middle level cover (3) mouth and has upper cover (6), it is connected with motor (7) to open and shut device (5), motor (7) are connected with control module (8), control module (8) are connected with waste classification discernment judgement module (9), control module (8) set up the posterior lateral plate inboard at shell (1), waste classification discernment judgement module (9) set up the preceding curb plate inboard at shell (1), be provided with microphone hole (11) and infrared camera hole (12) on shell (1) preceding curb plate.

2. The household intelligent sorting garbage can according to claim 1, characterized in that: the control module (8) comprises a garbage classification interlocking module (81), a limiting module (82), a power supply switching module (83), an opening degree keeping module (84) and a time delay module (85), the power supply switching module (83) is respectively connected with the garbage classification interlocking module (81), the limiting module (82), the opening degree keeping module (84) and the time delay module (85), and the limiting module (82) is respectively connected with the opening degree keeping module (84) and the time delay module (85).

3. The household intelligent sorting garbage can according to claim 1, characterized in that: the garbage classification recognition judging module (9) comprises a voice recognition judging module (91) and an image processing judging module (92).

4. The household intelligent sorting garbage can of claim 3, wherein: the voice recognition judging module (91) comprises a microphone (911), an analog-to-digital conversion module (912) and a voice judging module (913), the microphone (911) is connected with the analog-to-digital conversion module (912), the analog-to-digital conversion module (912) is connected with the voice judging module (913), and a port of the microphone (911) penetrates through a microphone hole (11).

5. The household intelligent sorting garbage can of claim 3, wherein: image processing judges module (92) including infrared scanning camera (921), image processing module (922) and image judgement module (923), infrared scanning camera (921) is connected with image processing module (922), image processing module (922) is connected with image judgement module (923), infrared scanning camera (921) port passes infrared camera hole (12).

6. The household intelligent sorting garbage can according to claim 1, characterized in that: the opening and closing device (5) comprises a box body (51), a gear speed reducer (52) is arranged in the box body (51), a driven gear of the gear speed reducer (52) is meshed with a transmission gear (53), the transmission gear (53) is a steering arc gear, the transmission gear (53) is fixedly connected with a connecting shaft (54), and the connecting shaft (54) is fixedly connected with a connecting plate (55).

7. The household intelligent sorting garbage can of claim 6, wherein: the gear speed reducer (52) is connected with the motor (7).

8. The household intelligent sorting garbage can of claim 6, wherein: the connecting plate (55) is fixedly connected with the upper cover (6).

9. The household intelligent sorting garbage can according to claim 1, characterized in that: interior storehouse (4) are including storehouse in the recoverable and the interior storehouse of can not retrieving at least, it has carried hole (41) to open on the curb plate around interior storehouse (4), the upper end in interior storehouse (4) is higher than the bottom of middle level cover (3).