CN114111975A - High-throughput logistics package dynamic scale - Google Patents
High-throughput logistics package dynamic scale Download PDFInfo
- Publication number
- CN114111975A CN114111975A CN202111349180.0A CN202111349180A CN114111975A CN 114111975 A CN114111975 A CN 114111975A CN 202111349180 A CN202111349180 A CN 202111349180A CN 114111975 A CN114111975 A CN 114111975A
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- weighing
- conveying platform
- scale
- logistics
- driving roller
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- 238000005303 weighing Methods 0.000 claims abstract description 114
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 210000000003 hoof Anatomy 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910001095 light aluminium alloy Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
- G01G11/003—Details; specially adapted accessories
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/02—Arrangements of bearings
- G01G21/08—Bearing mountings or adjusting means therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/02—Arrangements of bearings
- G01G21/10—Floating suspensions; Arrangements of shock absorbers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/02—Arrangements of bearings
- G01G21/12—Devices for preventing derangement
Abstract
The invention discloses a high-throughput logistics package dynamic scale which comprises a weighing conveying platform, a flexible force transmission component, a weighing sensor and a scale body base, wherein the weighing conveying platform is arranged on the weighing conveying platform; the weighing conveying platform comprises a weighing conveying platform frame, a driving roller and a driven roller, the driving roller and the driven roller are rotatably connected to two ends of the weighing conveying platform frame, a conveying belt is connected between the driving roller and the driven roller, and the driving roller is connected with a power transmission mechanism; the flexible force transmission component is positioned at the bottom of the weighing conveying platform frame close to two sides, the weighing sensor is positioned on the scale body base, and the bottom of the flexible force transmission component is connected with the weighing sensor. Not only guaranteed the precision of weighing, improve equipment's stability and life-span, improved commodity circulation parcel efficiency of weighing moreover.
Description
Technical Field
The invention belongs to the field of logistics automation equipment, and relates to a high-throughput logistics package dynamic scale.
Background
High currency efficiency is the new trend of developments of dynamic DWS system, the performance of dynamic balance is the key factor that restricts DWS system efficiency and promote, to the dynamic balance of operation under the high-speed condition, through the filter grade that increases the instrument, can improve its repeatability, but along with the increase of filter grade, need corresponding increase to weigh start-up time delay (the parcel is gone up the balance to the time that can begin to gather weight data) and weigh and leave the time delay (the former parcel leaves the weighing platform and to the time that next parcel can gather data), guaranteeing that the parcel length range of adaptation is unchangeable, must increase weighing platform length, thereby can reduce the promotion of weighing efficiency, finally influenced the currency efficiency of DWS complete machine. The dynamic balance operating under the high-speed condition must operate under a lower filtering level and ensure weighing repeatability precision, so that the dynamic response speed of the dynamic balance must be improved and vibration noise must be reduced. So that the so-called accurate (weighing repeatability) and so-called fast (high throughput) can be realized at the same time.
The dynamic response speed of the dynamic scale is influenced by the dynamic response characteristic of a system consisting of the weighing conveying platform, the force transmission mechanism and the sensor, the performance of a data acquisition circuit of the weighing instrument and the efficiency of a signal processing algorithm, however, the phenomenon of output delay and input can inevitably occur no matter which filtering method is adopted, and the whole efficiency is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the high-throughput logistics package dynamic scale, which not only ensures the weighing precision, improves the stability and the service life of equipment, but also improves the logistics package weighing efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a high-throughput logistics parcel dynamic scale comprises a weighing conveying platform, a flexible force transmission component, a weighing sensor and a scale body base;
the weighing conveying platform comprises a weighing conveying platform frame, a driving roller and a driven roller, the driving roller and the driven roller are rotatably connected to two ends of the weighing conveying platform frame, a conveying belt is connected between the driving roller and the driven roller, and the driving roller is connected with a power transmission mechanism;
the flexible force transmission component is positioned at the bottom of the weighing conveying platform frame close to two sides, the weighing sensor is positioned on the scale body base, and the bottom of the flexible force transmission component is connected with the weighing sensor.
Preferably the flexible force transfer member is made of polyurethane.
Preferably, the bottom of the scale body base is provided with a quasi-zero stiffness vibration isolator.
Preferably, a mounting hoof foot is arranged between the quasi-zero stiffness vibration isolator and the bottom of the scale body base.
Preferably, the loose edge of the conveying belt is provided with a supporting bearing, the supporting bearing is in contact with the inner surface of the conveying belt, and the supporting bearing is fixed on the weighing conveying table frame.
Preferably, the driving roller and the driven roller are in a multi-pair conical surface splicing structure.
Preferably, an X-shaped frame is arranged inside the weighing conveying platform frame, the X-shaped frame is connected with two sides of the weighing conveying platform frame, and the center of the X-shaped frame is the center of the weighing conveying platform frame.
Preferably, four angles of the conveying platform frame of weighing are provided with transportation protection bolts, the bottom of each transportation protection bolt is in contact with the top surface of the scale body base, nuts are arranged on the transportation protection bolts, and the tops of the nuts are in contact with the conveying platform frame of weighing.
Preferably, the power transmission mechanism comprises a synchronizing wheel, an arc tooth synchronous belt and a servo motor, the synchronizing wheel is connected with an output shaft of the servo motor, and the arc tooth synchronous belt connects the synchronizing wheel with the driving roller.
Preferably, the driven roller is made of an aluminum alloy material.
Compared with the prior art, the invention has the following beneficial effects:
the force transfer component between the weighing conveying platform and the weighing sensor adopts a flexible structure, has linear vibration isolation capability, reduces the transmission of exciting force caused by residual dynamic unbalanced mass of a rotating part of the weighing platform to the weighing sensor, offsets the weighing sensor and the force transfer component from the bottom of the weighing conveying platform to the side surface, keeps the center of mass of the weighing conveying platform and the axis of the weighing sensor in the same plane, changes the installation mode of the sensor, reduces the height of the center of mass of the weighing conveying platform, improves the dynamic response speed of the whole system, further improves the weighing efficiency and the weighing precision of equipment, improves the dynamic stability, reduces the additional bending moment and torque action born by a sensor elastomer in the process of package conveying, effectively controls the equivalent offset loading effect, and is convenient for installation and alignment, adjustment and maintenance improve the manufacturability and maintainability of the equipment.
Further, the quasi-zero stiffness vibration isolator isolates low-frequency vibration of an installation foundation caused by a steel platform, peripheral conveying and other sorting equipment, peripheral vibration environment interference is effectively reduced, the quality of output signals of the weighing sensor is greatly improved, and weighing precision and weighing efficiency are effectively improved.
Further, the height can be adjusted by rotating the mounting hoof feet, so that the height can be consistent with the height of the front and rear devices.
Furthermore, a supporting bearing is added on the loose edge of the conveying flat belt, so that the weighing error caused by the vertical vibration of the loose edge in the conveying process is effectively controlled.
Furthermore, the deviation protection capability of the conveying belt is effectively improved, and an additional deviation calibration device is not needed. The periodic reciprocating motion of the conveying belt in the axial direction of the roller and the vibration caused by the moving part of the deviation calibrating device are reduced.
Furthermore, the X-shaped frame is designed by adopting a topology optimization method, has the characteristics of high rigidity and low mass, effectively reduces the unbalance loading errors of the four corners and the center of the weighing platform, simultaneously improves the self-vibration frequency of a system formed by the weighing sensor and the weighing conveying platform, and improves the self-vibration resistance of the equipment.
Further, can raise the weighing and carry the platform through adjusting the nut on the transportation protection bolt to carry the platform with the weighing and control fixed from top to bottom, prevent that weighing sensor receives too big impact and damages in the transportation.
Furthermore, the driven roller is made of light aluminum alloy materials, so that the mass of the rotating part is reduced, and vibration caused by residual unbalanced mass in the manufacturing process is reduced.
Drawings
FIG. 1 is an isometric view of the structure of the present invention;
FIG. 2 is a front view of a weigh conveyor table assembly;
FIG. 3 is an isometric view of a weighing transport table component;
FIG. 4 is a front view of the drive roller;
FIG. 5 is a top view of a weighing conveyer table component;
fig. 6 is a partially enlarged view of the transportation protection bolt.
In the figure, 1-a balance, 2-a weighing conveying platform, 3-a flexible force transmission component, 4-a weighing sensor, 5-a balance body base, 6-a hoof foot, 7-a quasi-zero rigidity vibration isolator, 8-a transportation protection bolt, 9-a driven roller, 10-a weighing conveying platform framework, 11-a supporting bearing, 12-a motor mounting plate, 13-a synchronous pulley, 14-a circular arc tooth synchronous belt, 15-a servo motor, 16-a driving roller, 17-a conveying belt, 18-a flexible force transmission component upper connecting piece and 19-an X-shaped framework.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in figure 1, the high-throughput logistics package dynamic scale comprises a weighing conveying platform 2, a flexible force transmission component 3, a weighing sensor 4 and a scale body base 5.
The weighing and conveying platform 2 comprises a weighing and conveying platform frame 10, a driving roller 16 and a driven roller 9, the flexible force transmission component 3 is positioned at the bottom of the weighing and conveying platform frame 10 and close to two sides, the weighing sensor 4 is positioned on the scale body base 5, and the bottom of the flexible force transmission component 3 is connected with the weighing sensor 4. The flexible force transmission component 3 in the weighing conveying platform 2 is made of polyurethane and has a specific elastic modulus through dynamic analysis of the whole system, and the flexible force transmission component 3 on the weighing conveying platform 2 is connected with the weighing sensor 4 on the scale body base 5 through the upper connecting piece 18 of the flexible force transmission component. The weighing conveying platform 2 is connected with the weighing sensors 4 through the flexible force transmission members 3, so that the gravity center of the weighing platform is reduced, the dynamic response time of the weighing sensors 4 is prolonged, and the weighing efficiency is improved.
As shown in fig. 3, a driving roller 16 and a driven roller 9 are rotatably connected to two ends of the weighing conveyer frame 10, a conveyer belt 17 is connected between the driving roller 16 and the driven roller 9, and a power transmission mechanism is connected to the driving roller 16. The driving roller 16 and the driven roller 9 are connected to the weighing conveying platform frame 10 through a supporting seat, one end of a power transmission mechanism consisting of a synchronizing wheel 13 and an arc tooth synchronous belt 14 is connected to the driving roller 16, the other end of the power transmission mechanism is connected to an output shaft of a servo motor 15, and the servo motor 15 is connected to the weighing conveying platform frame 10 through a motor mounting plate 12.
Quasi-zero stiffness vibration isolators 7 are arranged below mounting hoof feet 6 on the scale body base 5, the height can be adjusted through rotating the mounting hoof feet 6, the height of the mounting hoof feet can be kept consistent with the height of front and rear equipment, the quasi-zero stiffness vibration isolators 7 are arranged under the mounting hoof feet 6, low-frequency vibration of a mounting base caused by a steel platform, peripheral conveying and other sorting equipment is isolated, peripheral vibration environment interference is effectively reduced, the quality of output signals of a weighing sensor is greatly improved, and weighing precision and weighing efficiency are effectively improved.
As shown in FIG. 2, the loose edge of the conveyor belt 17 is provided with the supporting bearing 11, the supporting bearing 11 is in contact with the inner surface of the conveyor belt 17, and the supporting bearing 11 is fixed on the weighing conveying platform frame 10, so that the vibration of the conveyor belt 17 in the operation process can be effectively reduced, and the interference of the weighing precision is reduced.
The roller surfaces of the driving roller 16 and the driven roller 9 are formed by splicing multiple conical surfaces, the specific structure is shown in fig. 4, the deviation amount of the conveying belt 17 can be effectively reduced through the change of the diameter, and therefore the influence on weighing precision caused by friction between the deviation of the conveying belt 17 and the roller supporting seat is reduced.
As shown in fig. 5, an X-shaped frame 19 is disposed inside the weighing conveyer table frame 10, the X-shaped frame 19 is connected to two sides of the weighing conveyer table frame 10, and the center of the X-shaped frame 19 is the center of the weighing conveyer table frame 10. The section bar with the X-shaped cloth layout is obtained by adopting a topological optimization method, has the characteristics of high rigidity and low mass, effectively reduces the unbalance loading errors of the four corners and the center of the weighing platform, simultaneously improves the self-vibration frequency of a system formed by the weighing sensor and the weighing conveying platform, and improves the self-vibration resistance of the equipment.
Four angles of the weighing conveying table frame 10 are provided with transportation protection bolts 18, the bottoms of the transportation protection bolts 18 are in contact with the top surface of the scale body base 5, nuts are arranged on the transportation protection bolts 18, and the tops of the nuts are in contact with the weighing conveying table frame 10. The transportation protection bolt 18 is used for protecting the weighing sensor 4 during the transportation process of the equipment, and as shown in fig. 6, the weighing conveying table is fixed up, down, left and right by screwing two nuts on the transportation protection bolt 18 so as to prevent the weighing sensor 4 from being damaged due to overlarge impact during the transportation process.
The principle of dynamic weighing in the invention is that a parcel enters the weighing end of equipment through a front-section conveyor, the weight of the parcel is transmitted to a weighing sensor 4 through a flexible force transmission component 3, the parcel can trigger a weighing photoelectric component 1 when entering the equipment, an instrument starts to collect a certain number of weight signals after delaying for a period of time, and then the weight of the next parcel is collected after the parcel weight is output through an algorithm in the instrument.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. A high-throughput logistics package dynamic scale is characterized by comprising a weighing conveying platform (2), a flexible force transmission component (3), a weighing sensor (4) and a scale body base (5);
the weighing conveying platform (2) comprises a weighing conveying platform frame (10), a driving roller (16) and a driven roller (9), the driving roller (16) and the driven roller (9) are rotatably connected to two ends of the weighing conveying platform frame (10), a conveying belt (17) is connected between the driving roller (16) and the driven roller (9), and the driving roller (16) is connected with a power transmission mechanism;
the flexible force transmission component (3) is positioned at the bottom of the weighing conveying table frame (10) close to two sides, the weighing sensor (4) is positioned on the scale body base (5), and the bottom of the flexible force transmission component (3) is connected with the weighing sensor (4).
2. High throughput logistics wrap dynamic scale of claim 1, wherein the flexible force transfer member (3) is made of polyurethane.
3. The high throughput logistics package dynamic scale of claim 1, wherein the bottom of the scale body base (5) is provided with a quasi-zero stiffness vibration isolator (7).
4. The high throughput logistics wrap dynamic scale of claim 1 wherein a mounting shoe (6) is disposed between the quasi-zero stiffness vibration isolator (7) and the bottom of the scale base (5).
5. High throughput logistics wrap dynamic scale of claim 1, wherein the loose edge of the conveyor belt (17) is provided with a support bearing (11), the support bearing (11) is in contact with the inner surface of the conveyor belt (17), and the support bearing (11) is fixed on the weighing conveyor table frame (10).
6. The dynamic scale for logistics packages with high throughput of claim 1, wherein the driving roller (16) and the driven roller (9) are both in a structure of a plurality of pairs of conical surface splicing structures.
7. The dynamic scale for logistics package with high throughput of claim 1, wherein an X-shaped frame (19) is arranged inside the weighing conveyer platform frame (10), the X-shaped frame (19) is connected with two sides of the weighing conveyer platform frame (10), and the center of the X-shaped frame (19) is the center of the weighing conveyer platform frame (10).
8. The dynamic balance for logistics packages with high throughput according to claim 1, wherein the weighing conveyer table frame (10) is provided with transport protection bolts (18) at four corners, the bottom of the transport protection bolt (18) is in contact with the top surface of the balance body base (5), the transport protection bolt (18) is provided with a nut, and the top of the nut is in contact with the weighing conveyer table frame (10).
9. The high throughput logistics wrap dynamic scale of claim 1, wherein the power transmission mechanism comprises a synchronizing wheel (13), a circular arc tooth synchronous belt (14) and a servo motor (15), the synchronizing wheel (13) is connected with an output shaft of the servo motor (15), and the circular arc tooth synchronous belt (14) connects the synchronizing wheel (13) and the driving roller (16).
10. High throughput logistics wrap dynamic scale of claim 1, wherein the driven roller (9) is made of an aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111349180.0A CN114111975A (en) | 2021-11-15 | 2021-11-15 | High-throughput logistics package dynamic scale |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111349180.0A CN114111975A (en) | 2021-11-15 | 2021-11-15 | High-throughput logistics package dynamic scale |
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| CN114111975A true CN114111975A (en) | 2022-03-01 |
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| CN202111349180.0A Pending CN114111975A (en) | 2021-11-15 | 2021-11-15 | High-throughput logistics package dynamic scale |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323216A (en) * | 2022-03-09 | 2022-04-12 | 启东亦大通自动化设备有限公司 | Automatic change parcel and weigh scanning and survey volume equipment |
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| CN114323216A (en) * | 2022-03-09 | 2022-04-12 | 启东亦大通自动化设备有限公司 | Automatic change parcel and weigh scanning and survey volume equipment |
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