Weighing module for intelligent goods shelf

Abstract

The invention belongs to the technical field of medical consumable intelligent storage, and particularly relates to a weighing module for an intelligent goods shelf. A weighing assembly; a bin box; the lifting mechanism is mounted between the supporting plate and the bin position box; the driving mechanism is mounted on the supporting plate, and the driving mechanism is assembled to be capable of driving the lifting mechanism to be switched between the lifting station and the descending station; and the controller is electrically connected with the weighing assembly and the driving mechanism. According to the invention, the liftable lifting mechanism and the weighing assembly work cooperatively, so that the problem that the weighing precision is reduced due to long-term static load can be effectively solved; the intermittent weighing mechanism not only ensures the stress consistency during measurement and ensures that the elastic body is in an initial state during each weighing, but also maintains the material characteristics of the elastic body through periodic unloading, so that the strain gauges in the weighing assembly can continuously output stable signals.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent storage of medical consumables, and particularly relates to a weighing module for an intelligent shelf. Background Art

[0002] In the medical field, intelligent shelves achieve precise management of medical supplies (such as drugs, consumables, etc.) through Internet of Things technology, can monitor inventory status, expiration dates, and usage dynamics in real time, and effectively reduce manual inventory errors. In addition, intelligent shelves can automatically trigger replenishment warnings when out of stock, improve supply efficiency, optimize procurement decisions through data analysis, and reduce waste. At the same time, the system supports the full-process traceability of high-value consumables, ensuring medical safety and meeting compliance requirements, thus significantly improving the intelligent level and operation efficiency of hospital warehousing management.

[0003] To achieve the above functions, intelligent shelves need to accurately obtain the inventory information of the stored goods. Currently, common inventory detection technologies mainly rely on weighing modules, which usually consist of an elastomer and strain gauges. When goods are placed on the shelf, their weight acts on the elastomer, causing the elastomer to deform, and then causing a change in the electrical signal of the strain gauge, from which the weight information of the goods is calculated. However, in the application scenario of intelligent shelves, the weighing module needs to bear the static load of the goods for a long time, and this continuous stress will cause the elastomer to gradually undergo irreversible plastic deformation (i.e., the "creep" phenomenon), thereby affecting the output accuracy of the strain gauge and resulting in weighing data drift or distortion. After long-term use, this cumulative error will reduce the reliability of the system and even affect the accuracy and safety of medical supply management. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a weighing module for an intelligent shelf, which can avoid weighing data drift or distortion caused by the weighing module bearing static load for a long time, and improve the service life of the weighing module and the reliability of the intelligent shelf.

[0005] To achieve the above object and other related objects, the present invention provides a weighing module for an intelligent shelf, including: a pallet; a weighing assembly installed on the pallet; a bin box disposed above the weighing assembly; a lifting mechanism installed between the pallet and the bin box, the lifting mechanism being configured to be able to switch between a lifting station and a lowering station, when the lifting mechanism is at the lifting station, the bin box is lifted away from the weighing assembly, and when the lifting mechanism is at the lowering station, the bin box is supported on the weighing assembly; a driving mechanism installed on the pallet, the driving mechanism being assembled to be able to drive the lifting mechanism to switch between the lifting station and the lowering station; a controller electrically connected to the weighing assembly and the driving mechanism.

[0006] In an alternative embodiment of the present invention, a grating detection device is further included. The grating detection device is used to detect whether a user interacts with the bin box. The grating detection device is electrically connected to the controller. The controller is configured to control the driving mechanism to act when the grating detection device detects that the user interacts with the bin box, so as to drive the lifting mechanism located at the lifting station to switch to the lowering station. And when the user finishes interacting with the bin box, after a preset time, the controller records the weighing data of the weighing component and controls the driving mechanism to act to drive the lifting mechanism to switch back to the lifting station.

[0007] In an alternative embodiment of the present invention, the lifting mechanism includes a cross beam, and elastic support arms arranged in a V-shape are provided on both sides of the cross beam. The driving mechanism is configured to be able to drive the two elastic support arms to open and close with each other in the horizontal direction, so as to lift or lower the cross beam.

[0008] In an alternative embodiment of the present invention, the cross beam includes a first cross beam and a second cross beam which are arranged separately. The first cross beam and the second cross beam are arranged in parallel at intervals, and the first cross beam and the second cross beam are respectively located on the front and rear sides of the weighing component.

[0009] In an alternative embodiment of the present invention, the driving mechanism includes a motor reducer assembly and a driving shaft. The driving shaft is connected to the power output end of the motor reducer assembly. A first transmission mechanism is provided between the driving shaft and the elastic support arm of the first cross beam, and a second transmission mechanism is provided between the driving shaft and the elastic support arm of the second cross beam.

[0010] In an alternative embodiment of the present invention, the first transmission mechanism includes a first sliding rod and a second sliding rod. The first sliding rod and the second sliding rod are slidably connected to the tray in the horizontal direction. A first sliding sleeve is provided on the first sliding rod, and a first spiral groove is provided on the first sliding sleeve. A second sliding sleeve is provided on the second sliding rod, and a second spiral groove is provided on the second sliding sleeve. The driving shaft is provided with a first driving pin and a second driving pin protruding radially. The first driving pin and the second driving pin are respectively in sliding fit with the first spiral groove and the second spiral groove. The first spiral groove and the second spiral groove have opposite helix directions. The elastic support arms on both sides of the first cross beam are fixedly connected to the first sliding rod and the second sliding rod respectively. The second transmission mechanism includes a third sliding rod and a fourth sliding rod. The third sliding rod and the fourth sliding rod are slidably connected to the tray in the horizontal direction. A third sliding sleeve is provided on the third sliding rod, and a third spiral groove is provided on the third sliding sleeve. A fourth sliding sleeve is provided on the fourth sliding rod, and a fourth spiral groove is provided on the fourth sliding sleeve. The driving shaft is provided with a third driving pin and a fourth driving pin protruding radially. The third driving pin and the fourth driving pin are respectively in sliding fit with the third spiral groove and the fourth spiral groove. The third spiral groove and the fourth spiral groove have opposite helix directions. The elastic support arms on both sides of the second cross beam are fixedly connected to the third sliding rod and the fourth sliding rod respectively.

[0011] In an alternative embodiment of the present invention, one end of the first spiral groove is provided with a first arc groove, one end of the second spiral groove is provided with a second arc groove, one end of the third spiral groove is provided with a third arc groove, and one end of the fourth spiral groove is provided with a fourth arc groove. The driving shaft has a first rotation stroke and a second rotation stroke. When the driving shaft rotates within the first rotation stroke, the first driving pin slides along the first spiral groove, the second driving pin slides along the second spiral groove, the third driving pin slides along the third arc groove, and the fourth driving pin slides along the fourth arc groove. When the driving shaft rotates within the second rotation stroke, the first driving pin slides along the first arc groove, the second driving pin slides along the second arc groove, the third driving pin slides along the third spiral groove, and the fourth driving pin slides along the fourth spiral groove.

[0012] In an alternative embodiment of the present invention, a first positioning mechanism is provided between the cross beam and the bottom surface of the storage box. The first positioning mechanism includes a convex rib and a first positioning groove that cooperate with each other. One of the convex rib and the first positioning groove is provided on the cross beam, and the other is provided on the bottom surface of the storage box.

[0013] In an alternative embodiment of the present invention, a plurality of the weighing components and the bin boxes are provided on the pallet. Each of the weighing components and each of the bin boxes are arranged along a first direction respectively. The length direction of the cross beam is parallel to the first direction, and each of the bin boxes shares the cross beam.

[0014] In an alternative embodiment of the present invention, the weighing component includes a bracket, a weight sensing device, and a balance plate. The bracket is fixedly connected to the pallet. The first end of the weight sensing device is fixedly connected to the bracket, and the second end of the weight sensing device is arranged in a cantilever shape. The second end of the weight sensing device is fixedly connected to the balance plate. A second positioning mechanism is provided between the balance plate and the bottom surface of the bin box. The second positioning mechanism includes two mutually parallel first stop walls provided on the balance plate, and two second stop walls provided at the bottom of the bin box and parallel to the first stop walls. The two second stop walls are located between the two first stop walls. At least two cross bars are provided between the two first stop walls, and second positioning grooves are provided on the two second stop walls for cooperating with the cross bars.

[0015] The technical effect of the present invention is that: by arranging the liftable lifting mechanism to work in cooperation with the weighing component, the present invention can effectively solve the problem of the decline in weighing accuracy caused by long-term static load. When the bin box needs to be weighed, the lifting mechanism descends so that the weight of the goods fully acts on the weighing component, and at this time, instantaneous and accurate measurement is carried out. During the non-weighing period, the driving mechanism controls the lifting mechanism to lift the bin box, so that the weighing component is completely unloaded, thereby avoiding the creep caused by the continuous compression of the elastic body in the weighing component, and eliminating the plastic deformation error brought by long-term load from the root. This intermittent weighing mechanism not only ensures the consistency of the force during measurement, ensuring that the elastic body is in the initial state every time weighing is carried out, but also maintains the material properties of the elastic body through periodic unloading, so that the strain gauge in the weighing component can continuously output stable signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional view of the intelligent shelf provided by the embodiment of the present invention; Figure 2 is an exploded view of the weighing module provided by the embodiment of the present invention; Figure 3 is a cross-sectional view of the weighing module provided by the embodiment of the present invention; Figure 4 is Figure 3 a partial enlarged view of I; Figure 5 is Figure 3 a partial enlarged view of II; Figure 6 is a partial three-dimensional view of the cross beam provided by the embodiment of the present invention; Figure 7It is the schematic diagram of the driving mechanism provided by the embodiment of the present invention; Figure 8 It is the three-dimensional view of the balance disk provided by the embodiment of the present invention; Figure 9 It is the three-dimensional view of the bin box provided by the embodiment of the present invention; Explanation of reference numerals: 100, cabinet; 10, pallet; 20, weighing assembly; 21, bracket; 22, weight sensing device; 23, balance disk; 231, first retaining wall; 232, cross bar; 30, bin box; 31, first positioning groove; 32, second retaining wall; 33, second positioning groove; 40, lifting mechanism; 400, cross beam; 41, first cross beam; 42, second cross beam; 43, elastic support arm; 44, convex rib; 50, drive shaft; 501, first drive pin; 502, second drive pin; 503, third drive pin; 504, fourth drive pin; 51, first slide bar; 52, second slide bar; 53, first slide sleeve; 531, first spiral groove; 532, first arc groove; 54, second slide sleeve; 541, second spiral groove; 542, second arc groove; 55, third slide bar; 56, fourth slide bar; 57, third slide sleeve; 571, third spiral groove; 572, third arc groove; 58, fourth slide sleeve; 581, fourth spiral groove; 582, fourth arc groove; 60, grating detection device. Detailed implementation manners

[0017] The following uses specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0018] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0019] The following combines an intelligent shelf to elaborate on the technical solution of the present invention. Please refer to Figure 1 As shown, the intelligent shelf includes a cabinet 100 and multiple layers of weighing modules installed in the cabinet 100. The weighing modules of each layer are arranged at intervals up and down. Please refer to Figures 2 to 9As shown in the figure, the weighing module includes a pallet 10, a weighing assembly 20, a bin box 30, a lifting mechanism 40, a driving mechanism, and a controller (not shown in the figure); the weighing assembly 20 is installed on the pallet 10; the bin box 30 is arranged above the weighing assembly 20; the lifting mechanism 40 is installed between the pallet 10 and the bin box 30, and the lifting mechanism 40 is configured to be able to switch between a lifting station and a lowering station. When the lifting mechanism 40 is at the lifting station, it lifts the bin box 30 away from the weighing assembly 20, and when the lifting mechanism 40 is at the lowering station, it enables the bin box 30 to be supported on the weighing assembly 20; the driving mechanism is installed on the pallet 10, and the driving mechanism is assembled to be able to drive the lifting mechanism 40 to switch between the lifting station and the lowering station; the controller is electrically connected to the weighing assembly 20 and the driving mechanism. By setting the liftable lifting mechanism 40 to work in cooperation with the weighing assembly 20, the present invention can effectively solve the problem of the decline in weighing accuracy caused by long-term static load; when the bin box 30 needs to be weighed, the lifting mechanism 40 descends so that the weight of the goods fully acts on the weighing assembly 20, and at this time, instantaneous and accurate measurement is carried out; during non-weighing periods, the driving mechanism controls the lifting mechanism 40 to lift the bin box 30, so that the weighing assembly 20 is completely unloaded, thereby avoiding creep caused by the continuous compression of the elastomer in the weighing assembly 20, and eliminating the plastic deformation error brought by long-term load from the root. This intermittent weighing mechanism not only ensures the consistency of the force during measurement, ensuring that the elastomer is in the initial state every time weighing is carried out, but also maintains the material properties of the elastomer through periodic unloading, enabling the strain gauge in the weighing assembly 20 to continuously output stable signals.

[0020] Please refer to Figure 1As shown, in an alternative embodiment of the present invention, it further includes a grating detection device 60 for detecting whether there is a user interacting with the bin 30. The grating detection device 60 is electrically connected to the controller. Specifically, the grating detection device 60 can be installed, for example, at the bottom of each pallet 10 and the bottom of the top plate of the cabinet 100. The controller is configured to, when the grating detection device 60 detects that a user is interacting with the bin 30, control the driving mechanism to act to drive the lifting mechanism 40 located at the lifting station to switch to the lowering station. And when the user ends the interaction with the bin 30, after a preset time, the controller records the weighing data of the weighing component 20 and controls the driving mechanism to act to drive the lifting mechanism 40 to switch back to the lifting station. This further embodiment realizes more intelligent and precise weighing management by the collaborative control of the grating detection device 60 and the controller on the action timing of the lifting mechanism 40: when the grating detects that a user is interacting with the bin 30, the controller immediately controls the lifting mechanism 40 to lower so that the bin 30 contacts the weighing component 20, and at this time the system enters the preparatory weighing state; after the user's operation ends, after a preset delay to ensure that the goods are stationary, the controller collects stable weighing data, and then immediately controls the lifting mechanism 40 to lift so that the bin 30 is separated from the weighing component 20. The present invention only briefly loads the weighing component 20 when weighing is required, minimizing the compression time of the elastomer to fundamentally suppress creep errors; the preset delay eliminates the mechanical vibration interference caused by the operation to ensure stability during data acquisition; the lifting state is immediately restored after the interaction ends to avoid the long-term load on the weighing component 20, thereby significantly extending the sensor life while ensuring the measurement accuracy.

[0021] Please refer to Figures 3 to 6As shown, in an alternative embodiment of the present invention, the lifting mechanism 40 includes a cross beam 400, and elastic support arms 43 arranged in a V-shape are provided on both sides of the cross beam 400. The driving mechanism is configured to be able to drive the two elastic support arms 43 to open and close horizontally relative to each other, so as to lift or lower the cross beam 400. In this further embodiment, through the design of the V-shaped elastic support arms 43, an efficient and reliable lifting action is achieved; when the driving mechanism drives the elastic support arms 43 on both sides to open and close horizontally, the V-shaped structure converts the horizontal displacement into a vertical movement, causing the cross beam 400 to perform a stable lifting and lowering action; the V-shaped layout of the elastic support arms 43 not only provides the necessary structural stiffness but also absorbs the operating impact through elastic deformation, protecting the weighing component 20 from instantaneous overload; the symmetric double-arm drive ensures that the cross beam 400 is evenly stressed, preventing the bin box 30 from tilting during the lifting process and ensuring the horizontal stability during weighing; the deformation characteristics of the elastic support arms 43 can automatically compensate for the clearance error caused by mechanical wear, enabling the system to still maintain an accurate lifting stroke after long-term use, thereby maintaining the measurement accuracy of the weighing module; this compact and reliable structural design realizes an accurate load switching function within a limited space.

[0022] Please refer to Figures 3 to 5 As shown, in an alternative embodiment of the present invention, the cross beam 400 includes a first cross beam 41 and a second cross beam 42 that are separately arranged. The first cross beam 41 and the second cross beam 42 are arranged in parallel at an interval, and the first cross beam 41 and the second cross beam 42 are respectively located on the front and rear sides of the weighing component 20. In this further embodiment, a split double-cross beam 400 design is adopted. By arranging the first cross beam 41 and the second cross beam 42 in parallel on the front and rear sides of the weighing component 20, a more optimized load distribution and structural stability are achieved; the split design symmetrically distributes the weight of the bin box 30 to the front and rear support points, effectively avoiding the torque deformation that may occur in the single-cross beam 400 structure and ensuring that the bin box 30 always maintains a horizontal posture during the lifting process; at the same time, the spaced arrangement of the double-cross beam 400 provides an unobstructed central measurement area for the weighing component 20, which not only ensures uniform stress on the weighing sensors but also facilitates installation and maintenance; this symmetric load structural design not only improves the smoothness of the lifting action but also reduces the stress concentration on a single cross beam 400 by dispersing the force, thereby extending the service life of key components and ultimately ensuring the accuracy and reliability of the long-term operation of the weighing system.

[0023] Please refer to Figures 3 to 5 、 Figure 7As shown, in an alternative embodiment of the present invention, the drive mechanism includes a motor reducer assembly (not shown in the figure) and a drive shaft 50. The drive shaft 50 is connected to the power output end of the motor reducer assembly. A first transmission mechanism is provided between the drive shaft 50 and the elastic support arm 43 of the first cross beam 41, and a second transmission mechanism is provided between the drive shaft 50 and the elastic support arm 43 of the second cross beam 42. The first transmission mechanism includes a first slide bar 51 and a second slide bar 52. The first slide bar 51 and the second slide bar 52 are slidably connected to the pallet 10 in the horizontal direction. A first slide sleeve 53 is provided on the first slide bar 51, and a first spiral groove 531 is provided on the first slide sleeve 53. A second slide sleeve 54 is provided on the second slide bar 52, and a second spiral groove 541 is provided on the second slide sleeve 54. The drive shaft 50 is provided with a first drive pin 501 and a second drive pin 502 protruding radially. The first drive pin 501 and the second drive pin 502 respectively form a sliding fit with the first spiral groove 531 and the second spiral groove 541. The first spiral groove 531 and the second spiral groove 541 have opposite helix directions. The elastic support arms 43 on both sides of the first cross beam 41 are respectively fixed to the first slide bar 51 and the second slide bar 52. The second transmission mechanism includes a third slide bar 55 and a fourth slide bar 56. The third slide bar 55 and the fourth slide bar 56 are slidably connected to the pallet 10 in the horizontal direction. A third slide sleeve 57 is provided on the third slide bar 55, and a third spiral groove 571 is provided on the third slide sleeve 57. A fourth slide sleeve 58 is provided on the fourth slide bar 56, and a fourth spiral groove 581 is provided on the fourth slide sleeve 58. The drive shaft 50 is provided with a third drive pin 503 and a fourth drive pin 504 protruding radially. The third drive pin 503 and the fourth drive pin 504 respectively form a sliding fit with the third spiral groove 571 and the fourth spiral groove 581. The third spiral groove 571 and the fourth spiral groove 581 have opposite helix directions. The elastic support arms 43 on both sides of the second cross beam 42 are respectively fixed to the third slide bar 55 and the fourth slide bar 56. The present invention realizes the synchronous or asynchronous precise drive of the double cross beam 400. When the motor reducer drives the drive shaft 50 to rotate, each drive pin slides in the spiral grooves with different helix directions, converting the rotational motion into the horizontal reciprocating motion of the slide bar. Since the adjacent spiral grooves have opposite helix directions, the paired slide bars always move in the opposite direction, thereby driving the eight-shaped elastic support arms 43 to open and close synchronously. The spiral groove transmission has a self-locking characteristic and can maintain stability at any position, ensuring that the lifting mechanism 40 can be accurately positioned at both the lifting and lowering stations. The single drive shaft 50 controls four slide bars simultaneously through symmetrically arranged spiral grooves, simplifies the transmission structure, reduces the number of drive components, and lowers the cost.

[0024] Please refer to Figure 7As shown, in an alternative embodiment of the present invention, one end of the first spiral groove 531 is provided with a first arc groove 532, one end of the second spiral groove 541 is provided with a second arc groove 542, one end of the third spiral groove 571 is provided with a third arc groove 572, and one end of the fourth spiral groove 581 is provided with a fourth arc groove 582; the drive shaft 50 has a first rotation stroke and a second rotation stroke; when the drive shaft 50 rotates within the first rotation stroke, the first drive pin 501 slides along the first spiral groove 531, the second drive pin 502 slides along the second spiral groove 541, the third drive pin 503 slides along the third arc groove 572, and the fourth drive pin 504 slides along the fourth arc groove 582; when the drive shaft 50 rotates within the second rotation stroke, the first drive pin 501 slides along the first arc groove 532, the second drive pin 502 slides along the second arc groove 542, the third drive pin 503 slides along the third spiral groove 571, and the fourth drive pin 504 slides along the fourth spiral groove 581. When the drive shaft 50 rotates within the first rotation stroke, only the first cross beam 41 is driven to move. When the drive shaft 50 rotates within the second rotation stroke, only the second cross beam 42 is driven to move. By alternately matching the arc groove and the spiral groove in this further embodiment, the time-sharing drive control of the double cross beam 400 is realized; when the drive shaft 50 is in the first rotation stroke, the elastic support arm 43 of the first cross beam 41 realizes the opening and closing movement through the spiral groove transmission, while the drive pin of the second cross beam 42 idles in the arc groove without displacement; conversely, when in the second rotation stroke, the elastic support arm 43 of the second cross beam 42 acts while the first cross beam 41 remains stationary. This time-sharing drive mechanism decomposes the load that originally needed to drive four sliding rods simultaneously into two stages, enabling the motor reducer to only overcome the movement resistance of a single cross beam 400 at any moment, thereby reducing the instantaneous load by approximately 50%, increasing the freedom of motor selection, and reducing the equipment cost; at the same time, the phased movement also reduces the inertial impact of the transmission system, prolonging the motor life and improving the positioning accuracy, and ultimately realizing a more stable and energy-saving system operation on the premise of ensuring the lifting function.

[0025] Please refer to Figure 4 、 Figure 5As shown, in an alternative embodiment of the present invention, a first positioning mechanism is provided between the cross beam 400 and the bottom surface of the bin box 30. The first positioning mechanism includes a cooperating rib 44 and a first positioning groove 31, with one of the rib 44 and the first positioning groove 31 provided on the cross beam 400 and the other provided on the bottom surface of the bin box 30. Through the cooperative design of the rib 44 and the first positioning groove 31 in this further embodiment, an accurate mechanical positioning reference is established between the cross beam 400 and the bin box 30; when the lifting mechanism 40 lifts the bin box 30 to the working position, the fitting action of the rib 44 and the positioning groove automatically corrects the horizontal position of the bin box 30, eliminating the small offsets caused by transmission clearances or assembly errors, and ensuring that the bin box 30 can maintain a completely consistent contact position and force distribution with the weighing assembly 20 every time it descends for weighing.

[0026] Please refer to Figure 1 、 Figure 2 As shown, in an alternative embodiment of the present invention, a plurality of the weighing assemblies 20 and the bin boxes 30 are provided on the pallet 10. Each of the weighing assemblies 20 and each of the bin boxes 30 are arranged along a first direction, the length direction of the cross beam 400 is parallel to the first direction, and all the bin boxes 30 share the cross beam 400. Through the integrated design of using a single cross beam 400 to drive multiple bin boxes 30 in this further embodiment, the space utilization rate and the system efficiency are synchronously improved; arranging a plurality of weighing assemblies 20 and bin boxes 30 along the same direction and uniformly driving them by the shared cross beam 400 enables a single driving mechanism to control the synchronous lifting and lowering of the entire row of bin boxes 30. This not only significantly reduces the number of actuators, lowers the manufacturing cost and maintenance complexity, but also ensures the consistency of the actions of all bin boxes 30 through unified driving.

[0027] Please refer to Figure 3 、 Figure 8 、 Figure 9As shown, in an alternative embodiment of the present invention, the weighing assembly 20 includes a bracket 21, a weight sensing device 22, and a balance plate 23. The bracket 21 is fixedly connected to the pallet 10. The first end of the weight sensing device 22 is fixedly connected to the bracket 21. The second end of the weight sensing device 22 is arranged in a cantilever shape. The second end of the weight sensing device 22 is fixedly connected to the balance plate 23. A second positioning mechanism is provided between the balance plate 23 and the bottom surface of the bin box 30. The second positioning mechanism includes two parallel first retaining walls 231 provided on the balance plate 23, and two second retaining walls 32 provided at the bottom of the bin box 30 and parallel to the first retaining walls 231. The two second retaining walls 32 are located between the two first retaining walls 231. At least two crossbars 232 are provided between the two first retaining walls 231. Second positioning grooves 33 are provided on the two second retaining walls 32 and are adapted to the crossbars 232. When the bin box 30 descends, the second retaining wall 32 first engages into the guiding channel formed by the first retaining wall 231 for preliminary lateral positioning. Subsequently, the precise engagement of the crossbar 232 with the second positioning groove 33 completes the longitudinal limit, effectively eliminating the position deviation caused by the assembly gap. The positioning structure enables the contact state between the bin box 30 and the balance plate 23 to be consistent during each weighing, fundamentally ensuring the accuracy of the weighing data.

[0028] The above embodiments merely illustrate the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

[0029] In the description herein, numerous specific details are provided, such as examples of components and / or methods, to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other instances, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

Claims

1. A weighing module for an intelligent shelf, characterized in that, Comprising: A pallet (10); A weighing assembly (20), mounted on the pallet (10); A bin (30), disposed above the weighing assembly (20); A lifting mechanism (40), installed between the pallet (10) and the bin (30), the lifting mechanism (40) being configured to be able to switch between a lifting station and a lowering station, and when the lifting mechanism (40) is at the lifting station, lifting the bin (30) away from the weighing assembly (20), and when the lifting mechanism (40) is at the lowering station, supporting the bin (30) on the weighing assembly (20); A driving mechanism, installed on the pallet (10), the driving mechanism being assembled to be able to drive the lifting mechanism (40) to switch between the lifting station and the lowering station; A controller, electrically connected to the weighing assembly (20) and the driving mechanism.

2. The weighing module for an intelligent shelf according to claim 1, characterized in that, It further includes a grating detection device (60), the grating detection device (60) being used to detect whether there is a user interacting with the bin (30), the grating detection device (60) being electrically connected to the controller; the controller is configured such that when the grating detection device (60) detects that a user is interacting with the bin (30), the controller controls the driving mechanism to act to drive the lifting mechanism (40) located at the lifting station to switch to the lowering station, and when the user ends the interaction with the bin (30), after a preset time, the controller records the weighing data of the weighing assembly (20) and controls the driving mechanism to act to drive the lifting mechanism (40) to switch back to the lifting station.

3. The weighing module for an intelligent shelf according to claim 1, characterized in that, The lifting mechanism (40) includes a cross beam (400), and elastic support arms (43) arranged in a V-shape are provided on both sides of the cross beam (400), the driving mechanism being configured to be able to drive the two elastic support arms (43) to open and close in the horizontal direction so as to lift or lower the cross beam (400).

4. The weighing module for an intelligent shelf according to claim 3, characterized in that, The cross beam (400) includes a first cross beam (41) and a second cross beam (42) which are separately arranged, the first cross beam (41) and the second cross beam (42) are arranged in parallel at intervals, and the first cross beam (41) and the second cross beam (42) are respectively located on the front and rear sides of the weighing assembly (20).

5. The weighing module for an intelligent shelf according to claim 4, wherein The driving mechanism includes a motor reducer assembly and a driving shaft (50), the driving shaft (50) is connected to the power output end of the motor reducer assembly, a first transmission mechanism is provided between the driving shaft (50) and the elastic support arm (43) of the first cross beam (41), and a second transmission mechanism is provided between the driving shaft (50) and the elastic support arm (43) of the second cross beam (42).

6. The weighing module for an intelligent shelf according to claim 5, wherein The first transmission mechanism includes a first slide bar (51) and a second slide bar (52). The first slide bar (51) and the second slide bar (52) are slidably connected to the pallet (10) in the horizontal direction. A first slide sleeve (53) is provided on the first slide bar (51), and a first spiral groove (531) is provided on the first slide sleeve (53). A second slide sleeve (54) is provided on the second slide bar (52), and a second spiral groove (541) is provided on the second slide sleeve (54). The drive shaft (50) is provided with a first drive pin (501) and a second drive pin (502) protruding radially. The first drive pin (501) and the second drive pin (502) are respectively in sliding fit with the first spiral groove (531) and the second spiral groove (541). The first spiral groove (531) and the second spiral groove (541) have opposite helix directions. The elastic support arms (43) on both sides of the first cross beam (41) are fixedly connected to the first slide bar (51) and the second slide bar (52) respectively; The second transmission mechanism includes a third slide bar (55) and a fourth slide bar (56). The third slide bar (55) and the fourth slide bar (56) are slidably connected to the pallet (10) in the horizontal direction. A third slide sleeve (57) is provided on the third slide bar (55), and a third spiral groove (571) is provided on the third slide sleeve (57). A fourth slide sleeve (58) is provided on the fourth slide bar (56), and a fourth spiral groove (581) is provided on the fourth slide sleeve (58). The drive shaft (50) is provided with a third drive pin (503) and a fourth drive pin (504) protruding radially. The third drive pin (503) and the fourth drive pin (504) are respectively in sliding fit with the third spiral groove (571) and the fourth spiral groove (581). The third spiral groove (571) and the fourth spiral groove (581) have opposite helix directions. The elastic support arms (43) on both sides of the second cross beam (42) are fixedly connected to the third slide bar (55) and the fourth slide bar (56) respectively.

7. The weighing module for an intelligent shelf according to claim 6, characterized in that, One end of the first helical groove (531) is provided with a first arc groove (532), one end of the second helical groove (541) is provided with a second arc groove (542), one end of the third helical groove (571) is provided with a third arc groove (572), and one end of the fourth helical groove (581) is provided with a fourth arc groove (582); the drive shaft (50) has a first rotation stroke and a second rotation stroke; when the drive shaft (50) rotates within the first rotation stroke, the first drive pin (501) slides along the first helical groove (531), the second drive pin (502) slides along the second helical groove (541), the third drive pin (503) slides along the third arc groove (572), and the fourth drive pin (504) slides along the fourth arc groove (582); when the drive shaft (50) rotates within the second rotation stroke, the first drive pin (501) slides along the first arc groove (532), the second drive pin (502) slides along the second arc groove (542), the third drive pin (503) slides along the third helical groove (571), and the fourth drive pin (504) slides along the fourth helical groove (581).

8. The weighing module for an intelligent shelf according to claim 3, characterized in that, A first positioning mechanism is provided between the cross beam (400) and the bottom surface of the bin box (30), and the first positioning mechanism includes a convex rib (44) and a first positioning groove (31) that cooperate with each other. One of the convex rib (44) and the first positioning groove (31) is provided on the cross beam (400), and the other is provided on the bottom surface of the bin box (30).

9. The weighing module for an intelligent shelf according to claim 3, characterized in that, A plurality of the weighing assemblies (20) and the bin boxes (30) are provided on the pallet (10). Each of the weighing assemblies (20) and each of the bin boxes (30) are arranged along a first direction respectively. The length direction of the cross beam (400) is parallel to the first direction, and each of the bin boxes (30) shares the cross beam (400).

10. The weighing module for an intelligent shelf according to claim 1, wherein, The weighing assembly (20) includes a bracket (21), a weight sensing device (22) and a balance plate (23). The bracket (21) is fixedly connected to the pallet (10). The first end of the weight sensing device (22) is fixedly connected to the bracket (21). The second end of the weight sensing device (22) is arranged in a cantilever shape. The second end of the weight sensing device (22) is fixedly connected to the balance plate (23). A second positioning mechanism is provided between the balance plate (23) and the bottom surface of the bin box (30). The second positioning mechanism includes two parallel first retaining walls (231) provided on the balance plate (23), and two second retaining walls (32) provided at the bottom of the bin box (30) and parallel to the first retaining walls (231). The two second retaining walls (32) are located between the two first retaining walls (231). At least two cross bars (232) are provided between the two first retaining walls (231). Second positioning grooves (33) that cooperate with the cross bars (232) are provided on the two second retaining walls (32).

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