CN111470233A - Space strain type intelligent storage shelf system - Google Patents

Space strain type intelligent storage shelf system Download PDF

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Publication number
CN111470233A
CN111470233A CN202010307211.5A CN202010307211A CN111470233A CN 111470233 A CN111470233 A CN 111470233A CN 202010307211 A CN202010307211 A CN 202010307211A CN 111470233 A CN111470233 A CN 111470233A
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CN
China
Prior art keywords
module
transverse
groove
longitudinal
respectively provided
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Pending
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CN202010307211.5A
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Chinese (zh)
Inventor
余东
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Suzhou Chengman Information Technology Co ltd
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Suzhou Chengman Information Technology Co ltd
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Priority to CN202010307211.5A priority Critical patent/CN111470233A/en
Publication of CN111470233A publication Critical patent/CN111470233A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G1/00Storing articles, individually or in orderly arrangement, in warehouses or magazines
    • B65G1/02Storage devices
    • B65G1/04Storage devices mechanical

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Warehouses Or Storage Devices (AREA)

Abstract

The invention relates to a space strain type intelligent storage shelf system, which comprises: the infrared detection door is arranged on the conveying belt, the front face and the rear face of the shell are hollowed, the left side and the right side of the first transverse module are respectively provided with two first lugs, the upper side and the lower side of the first transverse module are respectively provided with a first transverse groove, the left side and the right side of the second transverse module are respectively provided with two grooves, the upper side and the lower side of the second transverse module are respectively provided with a second transverse groove, the first lug of the first transverse module is connected with the groove of the second transverse module, the size of the first transverse module is larger than that of the second transverse module, the first transverse groove corresponds to the second transverse groove in position, the left side and the right side of the longitudinal module are respectively provided with two longitudinal grooves, the upper side and the lower side of the longitudinal module are respectively provided with a second lug, the second lug slides in a space formed by the first transverse groove and the second transverse groove, the longitudinal groove is consistent with the, the mechanical arm is arranged at the edge of the conveying belt.

Description

Space strain type intelligent storage shelf system
Technical Field
The invention relates to the field of intelligent storage, in particular to a space strain type intelligent storage shelf system.
Background
The logistics goods shelf is a goods shelf used for a logistics turnover center, generally comprises a storage goods shelf and a through type goods shelf, and the specific application is determined according to requirements. The storage shelf classification editing crossbeam type shelf is quick and convenient to store and take, any article is guaranteed to be firstly in and firstly out, the limitation of forklift types is avoided, the goods taking speed is high, and the space utilization rate is 30% -50% (determined by the forklift types). The corridor type goods shelf is characterized in that the goods are stored in high density, the goods are taken out after entering, part of the goods are taken according to a single mode, 20% -30% of the goods can be selected, the goods taking speed is general, and the goods storage clearance can reach 60% of the whole warehouse. The ideal selection of high-density and high-efficiency stored goods of the gravity type goods shelf adopts a free access design, the stock circulation rate is high, goods are taken according to the single order, the goods taking is rapid, the ground utilization rate is good, and the warehouse of the goods storage clean space station is 60 percent. The loft type goods shelf uses the goods shelf as a floor support, can be designed into a plurality of floors (usually 2-3 floors), is provided with stairs, goods lifting elevators and the like, and is suitable for high storehouses, light and small goods and manual access. And a lifting machine and a hydraulic lifting platform are used under the condition of large storage capacity. The light shelf is in an inserted combined structure and a standard combined plug-in unit, a connecting bolt is not needed, the light shelf is convenient and quick to disassemble and assemble, the super-strong closed steel floor structure is adjustable in the floor height of every 50mm, and the maximum load of each floor is 150-plus-250 kg. The medium-sized shelf adopts a structure form that a beam is combined with a laminate, and can bear 500kg of load, the beam has sections with various specifications, structural members can be freely assembled and disassembled, the layer height can be adjusted, and the distance adjustment is 50 mm. But the current goods shelves in the existing market can not adjust the height of the bearing plate and can not reasonably adjust the space of the goods shelves, thereby improving certain logistics cost.
Disclosure of Invention
The purpose of the invention is as follows:
the invention provides a space strain type intelligent storage shelf system, aiming at the problem that the space of a shelf cannot be reasonably adjusted.
The technical scheme is as follows:
a space-dependent smart storage racking system, comprising: the front and back surfaces of the shell are hollowed out, the left side and the right side of the first transverse module are respectively provided with two first lugs, the upper side and the lower side of the first transverse module are respectively provided with a first transverse groove, the left side and the right side of the second transverse module are respectively provided with two grooves, the upper side and the lower side of the second transverse module are respectively provided with a second transverse groove, the first transverse module and the second transverse module are arranged at intervals to form each layer of the goods shelf, the first lug of the first transverse module is connected with the groove of the second transverse module, the size of the first transverse module is larger than that of the second transverse module, the first transverse groove corresponds to the position of the second transverse groove, the left side and the right side of the longitudinal module are respectively provided with two longitudinal grooves, and the upper side and the lower side of the longitudinal module are respectively provided with a second lug, the longitudinal module is arranged on each layer of the goods shelf, the longitudinal groove of the longitudinal module corresponds to the groove of the second transverse module in the spatial position one by one, the second convex block slides in the space formed by the first transverse groove and the second transverse groove, the longitudinal groove is consistent with the cross section of the groove in size, the infrared detection door is arranged on the conveyor belt, the mechanical arm is arranged on the edge of the conveyor belt, and the mechanical arm corresponds to one goods shelf.
As a preferable mode of the present invention, the first projection and the second projection are respectively provided with a slider, the first projection is slid in a space formed by the groove and the longitudinal groove by the slider, and the second projection is slid in a space formed by the first lateral groove and the second lateral groove by the slider.
As a preferable mode of the present invention, a fixing clip is disposed in the middle of the groove and the longitudinal groove, and the fixing clip is configured to fix the slider disposed on the first protrusion.
As a preferable mode of the present invention, a storage groove is provided in an inner wall of the housing, a cross-sectional shape of the storage groove is identical to a cross-sectional shape of the longitudinal module, and the storage groove is used for storing the longitudinal module.
In a preferred embodiment of the present invention, the infrared detection door is used for detecting the length, width and height of the cargo box.
In a preferred aspect of the present invention, the infrared detection door includes a first infrared device, a second infrared device, and a third infrared device, the first infrared device is disposed on an upper side of the infrared detection door, and the second infrared device and the third infrared device are disposed on both sides of the infrared detection door.
The automatic distribution device comprises a plurality of shelves, each shelf corresponds to one mechanical arm, and each shelf is provided with a distribution area.
In a preferred aspect of the present invention, the container loading system further includes an identification device that identifies container delivery information, and the conveyor conveys the containers to the front of the corresponding racks based on the delivery information.
The invention realizes the following beneficial effects:
the bearing plate and the partition plate of the goods shelf are modularly arranged, so that the size of each lattice of the goods shelf can be changed conveniently according to the size of the goods shelf, the space of the goods shelf can be utilized conveniently, the utilization rate of the goods shelf is increased, and the logistics cost is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of a first transverse module according to the present invention;
FIG. 3 is a side view of a first transverse module of the present invention;
FIG. 4 is a top view of a second transverse module according to the present invention;
FIG. 5 is a side view of a second transverse module of the present invention;
FIG. 6 is a side view of a longitudinal module of the present invention;
FIG. 7 is a top view of the longitudinal module of the present invention;
FIG. 8 is a schematic view of a detection gate according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The first embodiment is as follows:
the reference figures are figures 1-8. A space-dependent smart storage racking system, comprising: the device comprises a shell 1, a first transverse module 2, a second transverse module 3, a longitudinal module 4, a conveyor belt 5, an infrared detection door 6 and a mechanical arm, wherein the front and back surfaces of the shell 1 are hollowed out, the left and right sides of the first transverse module 2 are respectively provided with two first lugs 7, the upper and lower sides of the first transverse module are respectively provided with a first transverse groove 8, the left and right sides of the second transverse module 3 are respectively provided with two grooves 9, the upper and lower sides of the second transverse module are respectively provided with a second transverse groove 10, the first transverse module 2 and the second transverse module 3 are arranged at intervals and form each layer of a goods shelf, the first lug 7 of the first transverse module 2 is connected with the groove 9 of the second transverse module 3, the size of the first transverse module 2 is larger than that of the second transverse module 3, the first transverse groove 8 corresponds to the position of the second transverse groove 10, and the left and right sides of the longitudinal module 4 are respectively provided with two longitudinal grooves, The upper and lower both sides are provided with second lug 12 respectively, vertical module 4 sets up in every layer of goods shelves, vertical groove 11 of vertical module 4 with the recess 9 of the horizontal module 3 of second one-to-one on the spatial position, second lug 12 is in first horizontal groove 8 with slide in the space that the second horizontal groove 10 constitutes, vertical groove 11 with the cross sectional dimension of recess 9 is unanimous, infrared ray detection door 6 set up in conveyer belt 5, the arm set up in 5 edges of conveyer belt, the arm corresponds a goods shelves.
In a preferred embodiment of the present invention, the first projection 7 and the second projection 12 are respectively provided with a slider, the first projection 7 slides in a space formed by the groove 9 and the longitudinal groove 11 by the slider, and the second projection 12 slides in a space formed by the first transverse groove 8 and the second transverse groove 10 by the slider.
In a preferred embodiment of the present invention, a fixing clip is disposed in the middle of the groove 9 and the longitudinal groove 11, and the fixing clip is used for fixing a slider disposed on the first protrusion 7.
As a preferable mode of the present invention, the inner wall of the housing 1 is provided with a storage groove having a cross-sectional shape corresponding to the cross-sectional shape of the longitudinal module 4, and the storage groove is used for storing the longitudinal module 4.
In a preferred embodiment of the present invention, the infrared detection door 6 is used to detect the length, width and height of the cargo box.
In a preferred embodiment of the present invention, the infrared detection door 6 includes a first infrared device 13, a second infrared device 14, and a third infrared device 15, the first infrared device 13 is disposed on the upper side of the infrared detection door 6, and the second infrared device 14 and the third infrared device are disposed on both sides of the infrared detection door 6.
The automatic distribution device comprises a plurality of shelves, each shelf corresponds to one mechanical arm, and each shelf is provided with a distribution area.
In a preferred embodiment of the present invention, the container conveying system includes an identification device that identifies container distribution information, and the conveyor 5 conveys the containers to the front of the corresponding racks based on the distribution information.
In the specific implementation process, the first infrared device 13 emits infrared downwards, the infrared reflection of the conveyor belt 5 is used for detecting the distance from the first infrared device 13 to the conveyor belt 5, when a container is transmitted from the conveyor belt 5, the infrared emitted by the first infrared device 13 is reflected by the top surface of the container when passing through the infrared detection door 6, so that the distance from the first infrared device 13 to the top of the container can be calculated, so that the height of the container can be calculated, the width of the infrared detection door 6 is calculated by the second infrared device 14 and the third infrared device 15 respectively, when the container passes through the infrared detection door 6, the distance from the second infrared device 14 and the third infrared device 15 to the two sides of the container is calculated according to the reflection of the two sides of the container respectively, the distance from the second infrared device 14 and the third infrared device 15 to the two sides of the container is subtracted by the width of the infrared detection door 6, so that the width of the container is the width of the container, the second infrared device 14 determines the time for shortening the reflection distance at the same time, and calculates the length of the cargo box based on the transmission speed of the conveyor 5, thereby calculating the length, width and height of the cargo box.
For a pallet, the second transverse module 3 is used to connect the longitudinal modules 4, so that the longitudinal modules 4 as supports are always connected to either side of the second transverse module 3, while the first transverse module 2 is only fixed in the middle of the recess 9 of the second transverse module 3 or the longitudinal slot 11 of the longitudinal module 4, i.e. the position of the first transverse module 2 is adjusted according to the height of the container, when the highest position of the container is lower than the corresponding highest longitudinal module 4, the height of the current compartment on the goods shelf is the height of the longitudinal module 4, when the highest position of the container is lower than one half of the highest longitudinal module 4, the highest height of the current compartment on the goods shelf is one half of the highest longitudinal module 4, when the highest position of the container is higher than half of the highest longitudinal module 4, the highest height of the current compartment on the pallet is the topmost end of the highest longitudinal module 4. The width of each grid is adjusted according to the length or width of the container.
To illustrate the operation, the length of the first transverse module 2 is set to 20, the width is set to 10, the thickness is set to 2, the height of the longitudinal module 4 is set to 20, the thickness is set to 2, the front and rear thickness of the entire pallet is set to 30, the height of the container a is determined to 25, the height of the first transverse module is adjusted to one half of the height of the longitudinal module 4 of the second layer so that the height of the first compartment of the pallet is 32, the container a can be placed in the first compartment of the pallet, the default width, i.e., the length 20 of the first transverse module 2, is preferentially selected for the width of the first compartment of the pallet, when the length of the container a is less than 20, the container a is arbitrarily placed with the height confirmed, and when one of the length of the container a is greater than 20 and less than 30 and the other is less than 20, the edge greater than 20 and less than 30 is taken as the longitudinal direction in the plane, so that the container a is placed in the first compartment of the pallet without changing the position of the first longitudinal module 4, and further judging that a certain space is left in the first grid, selecting a container with the height consistent with the height of the first grid, one of the length and the width being more than 20 and less than 30 and the other being less than the width of the left space under the subsequent conveying of the container, and placing the container into the space of the first grid. When one of the length and the width of the container A is larger than 20 and smaller than 30, and the other is larger than 30 (for example, 35), the edge larger than 20 and smaller than 30 is taken as the longitudinal direction in the plane and is placed into the first cell, and meanwhile, the longitudinal module 4 of the first cell is adjusted to the second transverse module 3, so that the width of the first cell is changed to 42, the container A can be placed into the first cell, and then, containers with corresponding sizes are selected to be plugged into the first cell in the subsequent container conveying process. It is worth mentioning that when the length and width of the container are both larger than 30, the container is used as a large article and is not placed in the goods shelf.
After the container A is placed into the first grid, if the size of the container B is not enough, the container B is opened into the second grid, and therefore the containers are accumulated layer by layer.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (8)

1. A space strain type intelligent storage shelf system is characterized by comprising: the front and back surfaces of the shell are hollowed out, the left side and the right side of the first transverse module are respectively provided with two first lugs, the upper side and the lower side of the first transverse module are respectively provided with a first transverse groove, the left side and the right side of the second transverse module are respectively provided with two grooves, the upper side and the lower side of the second transverse module are respectively provided with a second transverse groove, the first transverse module and the second transverse module are arranged at intervals to form each layer of the goods shelf, the first lug of the first transverse module is connected with the groove of the second transverse module, the size of the first transverse module is larger than that of the second transverse module, the first transverse groove corresponds to the position of the second transverse groove, the left side and the right side of the longitudinal module are respectively provided with two longitudinal grooves, and the upper side and the lower side of the longitudinal module are respectively provided with a second lug, the longitudinal module is arranged on each layer of the goods shelf, the longitudinal groove of the longitudinal module corresponds to the groove of the second transverse module in the spatial position one by one, the second convex block slides in the space formed by the first transverse groove and the second transverse groove, the longitudinal groove is consistent with the cross section of the groove in size, the infrared detection door is arranged on the conveyor belt, the mechanical arm is arranged on the edge of the conveyor belt, and the mechanical arm corresponds to one goods shelf.
2. The space strain intelligent storage rack system according to claim 1, wherein: the first projection and the second projection are respectively provided with a slider, the first projection slides in a space formed by the groove and the longitudinal groove through the slider, and the second projection slides in a space formed by the first transverse groove and the second transverse groove through the slider.
3. The space strain intelligent storage rack system according to claim 2, wherein: the middle parts of the groove and the longitudinal groove are provided with fixing clamps, and the fixing clamps are used for fixing sliders arranged on the first protruding blocks.
4. The space strain intelligent storage rack system according to claim 1, wherein: the inner wall of shell is provided with the holding vessel, the cross sectional shape of holding vessel with the cross sectional shape of vertical module is unanimous, the holding vessel is used for storing vertical module.
5. The space strain intelligent storage rack system according to claim 1, wherein: the infrared detection door is used for detecting the length, the width and the height of the container.
6. The space strain intelligent storage rack system according to claim 5, wherein: the infrared detection door comprises a first infrared device, a second infrared device and a third infrared device, the first infrared device is arranged on the upper side of the infrared detection door, and the second infrared device and the third infrared device are arranged on two sides of the infrared detection door.
7. The space strain intelligent storage rack system according to claim 6, wherein: the automatic distribution system comprises a plurality of shelves, wherein each shelf corresponds to one mechanical arm, and each shelf is provided with a distribution area.
8. The space strain intelligent storage rack system according to claim 7, wherein: the container distribution system comprises an identification device, wherein the identification device identifies container distribution information, and the conveyor belt conveys containers to the front of corresponding goods shelves according to the distribution information.
CN202010307211.5A 2020-04-17 2020-04-17 Space strain type intelligent storage shelf system Pending CN111470233A (en)

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Application Number Priority Date Filing Date Title
CN202010307211.5A CN111470233A (en) 2020-04-17 2020-04-17 Space strain type intelligent storage shelf system

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Application Number Priority Date Filing Date Title
CN202010307211.5A CN111470233A (en) 2020-04-17 2020-04-17 Space strain type intelligent storage shelf system

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CN111470233A true CN111470233A (en) 2020-07-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112830149A (en) * 2021-04-12 2021-05-25 山东捷瑞数字科技股份有限公司 Intelligent sample storage device and visual digital twin control system thereof

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11114686A (en) * 1997-10-08 1999-04-27 Amada Co Ltd Material shelf integrated type laser beam machining system
JP2003034409A (en) * 2001-07-19 2003-02-07 Mitsui Eng & Shipbuild Co Ltd Lifting carrier position retaining device in multistory warehouse
CN202988035U (en) * 2012-11-30 2013-06-12 浙江网仓科技有限公司 Stochastic dynamic storage type goods shelf
CN106005851A (en) * 2016-06-28 2016-10-12 天津天纺高新物流有限公司 Goods storage rack capable of being autonomously partitioned
CN107467907A (en) * 2017-07-17 2017-12-15 闫淑军 A kind of novel document storage device
CN107672985A (en) * 2017-11-07 2018-02-09 宁德市烟草物流有限公司 A kind of special-shaped cigarette movement order wall based on wireless radio-frequency
CN207969879U (en) * 2018-01-09 2018-10-16 胡鹏飞 A kind of hospital's personnel file management cabinet
CN207996044U (en) * 2017-06-15 2018-10-23 安庆师范大学 file cabinet
CN208144771U (en) * 2017-11-08 2018-11-27 丁焕君 A kind of engineering management filing cabinet special
CN209950759U (en) * 2019-05-14 2020-01-17 宗启龙 Economic management file strorage device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11114686A (en) * 1997-10-08 1999-04-27 Amada Co Ltd Material shelf integrated type laser beam machining system
JP2003034409A (en) * 2001-07-19 2003-02-07 Mitsui Eng & Shipbuild Co Ltd Lifting carrier position retaining device in multistory warehouse
CN202988035U (en) * 2012-11-30 2013-06-12 浙江网仓科技有限公司 Stochastic dynamic storage type goods shelf
CN106005851A (en) * 2016-06-28 2016-10-12 天津天纺高新物流有限公司 Goods storage rack capable of being autonomously partitioned
CN207996044U (en) * 2017-06-15 2018-10-23 安庆师范大学 file cabinet
CN107467907A (en) * 2017-07-17 2017-12-15 闫淑军 A kind of novel document storage device
CN107672985A (en) * 2017-11-07 2018-02-09 宁德市烟草物流有限公司 A kind of special-shaped cigarette movement order wall based on wireless radio-frequency
CN208144771U (en) * 2017-11-08 2018-11-27 丁焕君 A kind of engineering management filing cabinet special
CN207969879U (en) * 2018-01-09 2018-10-16 胡鹏飞 A kind of hospital's personnel file management cabinet
CN209950759U (en) * 2019-05-14 2020-01-17 宗启龙 Economic management file strorage device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112830149A (en) * 2021-04-12 2021-05-25 山东捷瑞数字科技股份有限公司 Intelligent sample storage device and visual digital twin control system thereof

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