Compact shelf power-down position determining device

Abstract

The utility model relates to the technical field of compact shelving positioning, in particular to a compact shelving power-down position determining device which comprises a driving motor, a motor transmission rod, a main driving wheel, a chain, an auxiliary driving wheel, a speed changing box and a positioning detection executing part, and the driving motor, the speed changing box and the positioning detection executing part are assembled on a compact shelving. A motor transmission rod is installed at the power output end of the driving motor, and the main driving wheel is installed on the motor transmission rod and connected with the motor transmission rod through a key. According to the power failure position determining device for the compact shelving, under the condition that the compact shelving is manually moved after being powered off, the current position of the compact shelving can be immediately and accurately positioned without re-initialization after the compact shelving is powered on, so that the compact shelving runs stably and orderly, the working efficiency is improved, and the working efficiency is improved. And the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of mobile shelving positioning technology, specifically to a device for determining the location of a mobile shelving unit after power failure. Background Technology

[0002] Mobile shelving is a frame structure that uses casters mounted on a base with a double-column, double-sided fixed frame, allowing it to move linearly along small guide rails laid on the ground. Multiple shelves can be brought together or separated as needed. The contact surfaces between the shelves typically utilize cushioning mechanisms or magnetic strips to prevent collisions. A dustproof panel is installed on the top, and a rodent-proof device is installed on the bottom, providing excellent dustproof, rodent-proof, moisture-proof, and fire-resistant functions. Compared to traditional bookshelves, shelves, and filing cabinets, mobile shelving offers greater document storage capacity while saving space.

[0003] Currently, mobile shelving positioning on the market can only measure position changes when there is power. Once the mobile shelving loses power and the position of the shelving is manually changed, the shelving cannot know its current accurate position after power is restored. It needs to be re-initialized to find the "zero point" again. If it is not initialized, the movement of the shelving will be chaotic and disorderly, the operation will be unstable or even collide. The initialization process is generally time-consuming and the user experience is poor. Utility Model Content

[0004] The purpose of this utility model is to provide a device for determining the position of a mobile shelving unit after a power outage. This device can accurately locate the current position of the shelving unit immediately after power is restored, without the need for re-initialization, when the unit is manually moved after a power outage. This ensures the stable and orderly operation of the unit and improves the user experience.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for determining the power-off location of a mobile shelving unit includes a drive motor, a motor transmission rod, a main drive wheel, a chain, a driven wheel, a gearbox, and a positioning detection execution unit. The drive motor, gearbox, and positioning detection execution unit are mounted on the mobile shelving unit. A motor transmission rod is installed at the power output end of the drive motor, and the main drive wheel is mounted on the motor transmission rod and connected to it via a key. A power input shaft for the shelving unit is installed at the power input end of the gearbox, and a driven wheel is mounted on the power input shaft. The main drive wheel is connected to the driven wheel via a chain, and the driven wheel drives the power input shaft of the gearbox to rotate. The gearbox reduces the rotational speed of the motor transmission rod and drives the positioning detection execution unit through a transmission structure.

[0007] The positioning detection execution unit includes a fixed frame, a transmission gear train assembly, a reversing gear train assembly, and an electronic measuring mechanism. The fixed frame is installed on the frame of the mobile shelving unit. The transmission gear train assembly is installed inside the fixed frame and receives the rotational amount output by the gearbox through a transmission structure. The reversing gear train assembly is arranged below the transmission gear train assembly. The reversing gear train assembly and the transmission gear train assembly transmit power through tooth contact. The electronic measuring mechanism is installed on the fixed frame and is arranged at a distance below the transmission gear train assembly.

[0008] The reversing gear train assembly includes a first reversing transmission gear, a second reversing transmission gear, and a reversing gear shaft. The reversing gear shaft is mounted on a fixed frame, and the first reversing transmission gear and the second reversing transmission gear are disposed on the reversing gear shaft. The first reversing transmission gear and the second reversing transmission gear are mounted on the reversing gear shaft through bearings.

[0009] The transmission gear system assembly includes an input transmission wheel, a first-stage transmission wheel, a second-stage transmission wheel, a third-stage transmission wheel, and a transmission wheel shaft. The input transmission wheel, the first-stage transmission wheel, the second-stage transmission wheel, and the third-stage transmission wheel are mounted on the transmission wheel shaft. The input transmission wheel is rigidly connected to the first-stage transmission wheel. The first-stage transmission wheel drives the second-stage transmission wheel to rotate via a first reversing transmission gear. The second-stage transmission wheel drives the third-stage transmission wheel to rotate via a second reversing transmission gear.

[0010] Furthermore, each rotation of the first-stage drive wheel causes the second-stage drive wheel to rotate by 1 / 10 via the reversing drive gear.

[0011] Furthermore, 20 meshing teeth are evenly distributed on side A of the input transmission wheel, the second-stage transmission wheel, and the third-stage transmission wheel. The second-stage transmission wheel meshes with the first reversing transmission gear through the meshing teeth; the third-stage transmission wheel meshes with the second reversing transmission gear through the meshing teeth.

[0012] Furthermore, eight meshing teeth are evenly arranged on the first and second reversing transmission gears, and two contact teeth are respectively arranged on the B side of the first and second stage transmission wheels. Through meshing, the first stage transmission wheel rotates one revolution and the second stage transmission wheel rotates 1 / 10, thereby completing the transmission of the position change of the mobile shelving unit at each transmission rotation position. This ensures that the combination of each transmission wheel is unique within the effective movement range of the mobile shelving unit and meets the error requirements.

[0013] Furthermore, the transmission wheel bodies of the first-stage transmission wheel, the second-stage transmission wheel, and the third-stage transmission wheel are provided with sector-shaped slots I, II, and III, as well as sector-shaped connections I, II, and III. The sector-shaped connections I, II, and III are arranged at intervals with the sector-shaped slots I, II, and III, and the angle between sector-shaped slots I and I is 89°; the angle between sector-shaped slots II and II is 28°; and the angle between sector-shaped slots III and III is 59°.

[0014] Furthermore, the electronic measuring mechanism mainly consists of a main board and four infrared transceiver boards; five infrared receiver tubes are arranged on one side of each infrared transceiver board; five infrared emitting lamps are arranged on the other side of each infrared transceiver board; the included angle between adjacent infrared emitting lamps is 30°; two adjacent transceiver boards form a transceiver group, and the first-stage transmission wheel, second-stage transmission wheel, and third-stage transmission wheel are located between two adjacent transceiver board groups; each infrared transceiver board is directly welded to the main board at a 90-degree angle, and the main board is fixed to the transmission wheel fixing frame by fastening screws.

[0015] The beneficial effects of this utility model are as follows: The mobile shelving unit power-off position determination device provided by this utility model can accurately locate the current position of the shelving unit immediately after power is restored without re-initialization when the unit is manually moved after a power outage, ensuring smooth and orderly operation and improving the user experience. Specifically, each wheel in the multi-stage transmission wheel system (transmission wheel system assembly) of this utility model has the same special hole and groove structure. The rotation of the lower-level transmission wheel will drive the rotation of the higher-level transmission wheel. Two circuit boards are set on both sides of each transmission wheel in this mechanical structure. Multiple infrared emitting lamps are designed on one side of the circuit board, and infrared receiving tubes are set on the corresponding other side of the circuit board. When the aforementioned transmission wheel rotates, the holes and grooves on the wheel will periodically block the path from the emitting lamps to the receiving tubes. By controlling the infrared emission and reading the infrared reception status through the microcontroller control circuit, the rotation position of each level of transmission wheel can be determined, thereby inferring the position of the mobile shelving unit. Finally, the result is output to other devices that need to determine the position of the mobile shelving unit through the communication interface. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation of the mobile shelving unit power failure location determination device of this utility model;

[0017] Figure 2 This is an overall schematic diagram of the device for determining the power failure location of the mobile shelving unit according to this utility model;

[0018] Figure 3 This is a schematic diagram of the positioning detection execution unit in this utility model;

[0019] Figure 4 This is a schematic diagram of the installation structure of the transmission wheel train assembly and the reversing wheel train assembly in this utility model;

[0020] Figure 5 This is a schematic diagram of the electronic measuring mechanism in this utility model;

[0021] Figure 6 This is a schematic diagram of the transmission wheel in this utility model;

[0022] Figure 7 This is a side view of the transmission wheel in this utility model.

[0023] The numbers in the diagram are as follows: 1-Drive motor, 2-Motor transmission rod, 3-Main drive wheel, 4-Chain, 5-Driven wheel, 6-Gearbox, 7-Positioning detection actuator, 8-Sector slot I, 9-Sector slot II, 10-Sector slot III, 11-Sector connection I, 12-Sector connection II, 13-Sector connection III, 14-Meshing tooth, 15-Contact tooth, 71-Fixed frame, 72-Transmission gear train assembly, 73-Reversing gear train assembly, 74-Electronic measuring mechanism. 721-Input transmission wheel, 722-First stage transmission wheel, 723-Second stage transmission wheel, 724-Third stage transmission wheel, 725-Transmission wheel shaft, 731-First reversing transmission gear, 732-Second reversing transmission gear, 733-Reversing gear shaft, 741-Main board, 742-Infrared transceiver board, 743-Infrared receiver tube, 744-Infrared emitting lamp, A-Mobile shelving unit, B-Mobile shelving unit power failure location determination device. Detailed Implementation

[0024] Specific Embodiment 1: The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. It should be noted that: In this utility model, unless otherwise specified, all implementation methods and preferred implementation methods mentioned herein can be combined with each other to form new technical solutions. In this utility model, unless otherwise specified, all technical features and preferred features mentioned herein can be combined with each other to form new technical solutions. In this utility model, unless otherwise specified, the installation sequence of each operation step is followed. Unless otherwise specified, the professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. Furthermore, any method similar to or equivalent to the content described herein can also be applied to this utility model.

[0025] As per the specification attached to this utility model Figure 1Instruction manual attached Figure 2 As shown, to address the problem that existing mobile shelving positioning devices can only measure position changes when there is power, and require re-initialization to find the "zero point" after a power outage, resulting in chaotic and unstable movement or even collisions, and that the initialization process is generally time-consuming and leads to a poor user experience, this utility model provides a mobile shelving power-off position determination device. It mainly includes a drive motor 1, a motor transmission rod 2, a main drive wheel 3, a chain 4, a driven wheel 5, a gearbox 6, a transmission structure, and a positioning detection execution unit 7. The drive motor... 1. The gearbox 6 and the positioning detection execution unit 7 are assembled on the mobile shelving unit; a motor transmission rod 2 is installed on the power output end of the drive motor 1, and the main drive wheel 3 is installed on the motor transmission rod 2 and connected to the motor transmission rod 2 by a key; a housing power input shaft is installed at the power input end of the gearbox 6, and a driven wheel 5 is installed on the housing power input shaft; the main drive wheel 3 is connected to the driven wheel 5 by a chain 4, and the driven wheel 5 drives the power input shaft of the gearbox 6 to rotate. The gearbox 6 changes the rotation speed of the motor transmission rod 2 and drives the positioning detection execution unit 7 to work through the transmission structure.

[0026] As per the specification attached to this utility model Figure 3 As shown, the positioning detection execution unit 7 of this utility model includes a fixed frame 71, a transmission wheel system assembly 72, a reversing wheel system assembly 73, and an electronic measuring mechanism 74. The fixed frame 71 is installed on the frame of the mobile shelving unit. The transmission wheel system assembly 72 is installed inside the fixed frame 71. The transmission wheel system assembly 72 receives the rotation output from the gearbox 6 through a transmission structure. The reversing wheel system assembly 73 is arranged on the lower side of the transmission wheel system assembly 72. The reversing wheel system assembly 73 and the transmission wheel system assembly 72 transmit power through tooth contact. The electronic measuring mechanism 74 is installed on the lower side of the fixed frame 71. The upper part of the electronic measuring mechanism 74 is spaced apart inside the transmission wheel system assembly 72.

[0027] As per the specification attached to this utility model Figure 3 and instruction manual attached Figure 4 As shown, the reversing gear train assembly 73 of this utility model includes a first reversing transmission gear 731, a second reversing transmission gear 732, and a reversing gear shaft 733. The reversing gear shaft 733 is mounted on a fixed frame 71. The first reversing transmission gear 731 and the second reversing transmission gear 732 are provided on the reversing gear shaft 733. The first reversing transmission gear 731 and the second reversing transmission gear 732 are mounted on the reversing gear shaft 733 by bearings.

[0028] As per the specification attached to this utility model Figure 3 Instruction manual attached Figure 4 Instruction manual attached Figure 6and instruction manual attached Figure 7 As shown, the transmission wheel assembly 72 of this utility model includes an input transmission wheel 721, a first-stage transmission wheel 722, a second-stage transmission wheel 723, a third-stage transmission wheel 724, and a transmission wheel shaft 725. The input transmission wheel 721, the first-stage transmission wheel 722, the second-stage transmission wheel 723, and the third-stage transmission wheel 724 are mounted on the transmission wheel shaft 725. The input transmission wheel 721 is rigidly connected to the first-stage transmission wheel 722. The second-stage transmission wheel 723 and the third-stage transmission wheel 724 are rotatably mounted on the transmission wheel shaft 725. The first-stage transmission wheel 722 drives the second-stage transmission wheel 723 to rotate through a first reversing transmission gear 731. The second-stage transmission wheel 723 drives the third-stage transmission wheel 724 to rotate through a second reversing transmission gear 732. Each rotation of the first-stage transmission wheel causes the next-stage transmission wheel to rotate by 1 / 10 through the reversing transmission gear. Twenty meshing teeth 14 are evenly distributed on side A of the input transmission wheel 721, the second-stage transmission wheel 723, and the third-stage transmission wheel 724. The second-stage transmission wheel 723 meshes with the first reversing transmission gear 731 through the meshing teeth 14; the third-stage transmission wheel 724 meshes with the second reversing transmission gear 732 through the meshing teeth 14. Eight mating teeth are evenly arranged on the reversing transmission gears (first reversing transmission gear 731 and second reversing transmission gear 732). Two contact teeth 15 are respectively arranged on side B of the first-stage transmission wheel 722 and the second-stage transmission wheel 723. In this way, through meshing, the previous stage transmission wheel (such as the first-stage transmission wheel 722) rotates one revolution and the next stage transmission wheel (such as the second-stage transmission wheel 723) rotates 1 / 10, thereby completing the transmission of the position change of the mobile shelving unit at each transmission rotation position. This ensures that the combination of each transmission wheel is unique within the effective movement range of the mobile shelving unit and meets the error requirements. The transmission wheel bodies of the first-stage transmission wheel 722, the second-stage transmission wheel 723, and the third-stage transmission wheel 724 are provided with fan-shaped slots I8, II9, and III10, as well as fan-shaped connectors I11, II12, and III13. The fan-shaped connectors I11, II12, and III13 are arranged at intervals with the fan-shaped slots I8, II9, and III10. The angle between the fan-shaped slots I8 and I11 is 89°; the angle between the fan-shaped slots II9 and II12 is 28°; and the angle between the fan-shaped slots III10 and III13 is 59°.

[0029] As per the specification attached to this utility model Figure 5As shown, the electronic measuring mechanism 74 of this utility model mainly consists of a main board 741 and four infrared transceiver boards 742; five infrared receiver tubes 743 are provided on one side of each infrared transceiver board 742; five infrared emitting lamps 744 are provided on the other side of each infrared transceiver board 742; the included angle between adjacent infrared emitting lamps 744 is 30°; two adjacent transceiver boards form a transceiver group, and the first-stage transmission wheel 722, the second-stage transmission wheel 723, and the third-stage transmission wheel 724 are respectively located in the middle of two adjacent transceiver board groups; each infrared transceiver board 742 is directly welded to the main board 741 at a 90-degree angle, and the main board 741 is fixed to the transmission wheel fixing frame 71 by fastening screws.

[0030] This utility model provides a mobile shelving unit power-off position determination device that utilizes multi-stage transmission wheels to drive changes in the position of the mobile shelving unit. Within the entire range of motion of the mobile shelving unit, the highest-level transmission wheel rotates less than one revolution. This means that each position of the mobile shelving unit within its effective range of motion corresponds to a unique position state composed of each stage of transmission wheels. By using photoelectric principles to determine the position state of each stage of transmission wheels, the position of the mobile shelving unit can be deduced. Specifically, each of the first-stage transmission wheel 722, the second-stage transmission wheel 723, the third-stage transmission wheel 724, and the input transmission wheel 721 in the mobile shelving unit power-off position determination device has the same special fan-shaped slot structure. The rotation of a lower-level transmission wheel drives the rotation of the higher-level transmission wheel. The transmission wheel rotates; in this mechanical structure, two circuit boards (infrared transceiver plug-in 742) are set on both sides of each transmission wheel. Multiple infrared emitting lamps 744 are designed on one side of the circuit board of the infrared transceiver plug-in 742, and infrared receiving tubes 743 are set on the corresponding other side of the circuit board (infrared transceiver plug-in 742); the entire device of the mobile shelving power failure position determination device of this utility model is set next to the transmission shaft at the bottom of the mobile shelving. By setting gears on the transmission shaft, the change of the horizontal position of the mobile shelving is converted into the rotation of the lowest level (hereinafter referred to as the first level) transmission wheel of the device. The entire device is equipped with 3 (the number can be increased or decreased, and the more the number, the higher the accuracy). One rotation of the first-stage transmission wheel 722 drives the second-stage transmission wheel 723 to rotate by 1 / 10 (not limited to 1 / 10, it can be other values) via a gear (first reversing transmission gear 731). Similarly, one rotation of the second-stage transmission wheel 723 drives the third-stage transmission wheel 724 to rotate by 1 / 10 via a gear (second reversing transmission gear 732). If the first-stage transmission wheel 722 rotates by 1 / 10 when the mobile shelving unit moves 1 cm in the mechanical transmission structure, then the three-stage transmission wheel can cover the movement range of the mobile shelving unit from 0 to 999 cm. Since the movement range of the mobile shelving unit is usually within 2 m, by adjusting the transmission ratio, the first-stage transmission wheel 722 can rotate by 1 / 10 when the mobile shelving unit moves 2 mm. At the same time, since the electronic sampling part can achieve a resolution of 1 / 30 of a revolution for the rotation change of the transmission wheel, the three-stage transmission wheel structure can ensure that the movement measurement error of the mobile shelving unit is within 0.67 mm, and the positioning error of the mobile shelving unit is within 1 mm, which can meet the positioning accuracy requirements of most mobile shelving units.When the aforementioned transmission wheels rotate, the slots on the transmission wheels (first-stage transmission wheel 722, second-stage transmission wheel 723, and third-stage transmission wheel 724) periodically block the path from the transmitting lamp to the receiving tube. By controlling the infrared transmission and reading the infrared receiving status through the microcontroller control circuit, the rotation position of each stage of the transmission wheels can be determined, thereby inferring the position of the mobile shelving unit. Finally, the result is output to other devices that need to determine the position of the mobile shelving unit through the communication interface. Specifically, when the transmission wheels rotate, the five infrared transmitting lamps 744 on a transceiver board (infrared transceiver board 742) are lit in sequence, and the infrared receiving tubes 743 at the corresponding positions are read. If a signal is read, it means that the infrared transceiver path is unobstructed; otherwise, it means that the infrared transceiver path is blocked. Repeating the above process for the five pairs of infrared transceiver pairs in the same group allows us to determine whether the transceiver paths of the five pairs of infrared transceiver pairs are unobstructed. Based on the special slot design of the aforementioned transmission wheels, the position status of one transmission wheel can be determined. By repeating the above operations on other infrared transceiver pairs, the position status of the three drive wheels can be obtained. Then, based on the transmission ratio of the linear motion of the mobile shelving unit to the rotation of the drive wheels, the position of the mobile shelving unit can be calculated.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A device for determining the power failure location of a mobile shelving unit, characterized in that, The system includes a drive motor (1), a motor transmission rod (2), a main drive wheel (3), a chain (4), a driven wheel (5), a gearbox (6), and a positioning detection execution unit (7). The drive motor (1), gearbox (6), and positioning detection execution unit (7) are mounted on a mobile shelving unit. The drive motor (1) has a motor transmission rod (2) installed at its power output end. The main drive wheel (3) is mounted on the motor transmission rod (2) and connected to the motor transmission rod (2) via a key. A housing power input shaft is installed at the power input end of the gearbox (6), and a driven wheel (5) is installed on the housing power input shaft. The main drive wheel (3) is connected to the driven wheel (5) via a chain (4). The driven wheel (5) drives the power input shaft of the gearbox (6) to rotate. The gearbox (6) changes the rotation speed of the motor transmission rod (2) and drives the positioning detection execution unit (7) to work through the transmission structure.

2. The device for determining the power failure location of a mobile shelving unit according to claim 1, characterized in that, The positioning detection execution unit (7) includes a fixed frame (71), a transmission wheel system assembly (72), a reversing wheel system assembly (73), and an electronic measuring mechanism (74). The fixed frame (71) is installed on the frame of the mobile shelving unit. The transmission wheel system assembly (72) is installed inside the fixed frame (71). The transmission wheel system assembly (72) receives the rotation output from the gearbox (6) through a transmission structure. The reversing wheel system assembly (73) is arranged on the lower side of the transmission wheel system assembly (72). The reversing wheel system assembly (73) and the transmission wheel system assembly (72) transmit power through tooth contact. The electronic measuring mechanism (74) is installed on the fixed frame (71). The lower side of the electronic measuring mechanism (74) is spaced inside the transmission wheel system assembly (72).

3. The device for determining the power failure location of a mobile shelving unit according to claim 2, characterized in that, The reversing gear train assembly (73) includes a first reversing transmission gear (731), a second reversing transmission gear (732), and a reversing gear shaft (733). The reversing gear shaft (733) is mounted on a fixed frame (71). The first reversing transmission gear (731) and the second reversing transmission gear (732) are provided on the reversing gear shaft (733). The first reversing transmission gear (731) and the second reversing transmission gear (732) are mounted on the reversing gear shaft (733) by bearings.

4. The device for determining the power failure location of a mobile shelving unit according to claim 3, characterized in that, The transmission wheel assembly (72) includes an input transmission wheel (721), a first-stage transmission wheel (722), a second-stage transmission wheel (723), a third-stage transmission wheel (724), and a transmission wheel shaft (725). The input transmission wheel (721), the first-stage transmission wheel (722), the second-stage transmission wheel (723), and the third-stage transmission wheel (724) are mounted on the transmission wheel shaft (725). The input transmission wheel (721) is connected to the first-stage transmission wheel (722) via a rigid connection. The first-stage transmission wheel (722) drives the second-stage transmission wheel (723) to rotate via a first reversing transmission gear (731). The second-stage transmission wheel (723) drives the third-stage transmission wheel (724) to rotate via a second reversing transmission gear (732).

5. The device for determining the power failure location of a mobile shelving unit according to claim 4, characterized in that, On the A side of the input transmission wheel (721), the second-stage transmission wheel (723), and the third-stage transmission wheel (724), there are 20 meshing teeth (14). The second-stage transmission wheel (723) meshes with the first reversing transmission gear (731) through the meshing teeth (14); the third-stage transmission wheel (724) meshes with the second reversing transmission gear (732) through the meshing teeth (14).

6. The device for determining the power failure location of a mobile shelving unit according to claim 4, characterized in that, Eight meshing teeth are evenly arranged on the first reversing transmission gear (731) and the second reversing transmission gear (732). Two contact teeth (15) are respectively arranged on the B side of the first stage transmission wheel (722) and the second stage transmission wheel (723). In this way, the meshing causes the first stage transmission wheel to rotate one revolution and the second stage transmission wheel to rotate 1 / 10, thereby completing the transmission of the position change of the mobile shelving in each transmission rotation position. This ensures that the combination of each transmission wheel is unique within the effective movement range of the mobile shelving and meets the error requirements.

7. The device for determining the power failure location of a mobile shelving unit according to claim 5, characterized in that, On the transmission wheel bodies of the first-stage transmission wheel (722), the second-stage transmission wheel (723), and the third-stage transmission wheel (724), there are fan-shaped slots I (8), II (9), and III (10), as well as fan-shaped connections I (11), II (12), and III (13). The fan-shaped connections I (11), II (12), and III (13) are arranged at intervals with the fan-shaped slots I (8), II (9), and III (10). The angle between the fan-shaped slots I (8) and I (11) is 89°; the angle between the fan-shaped slots II (9) and II (12) is 28°; and the angle between the fan-shaped slots III (10) and III (13) is 59°.

8. A device for determining the power failure location of a mobile shelving unit according to claim 4, characterized in that, The electronic measuring mechanism (74) mainly consists of a main board (741) and four infrared transceiver boards (742); five infrared receiver tubes (743) are provided on one side of each infrared transceiver board (742); five infrared emitting lamps (744) are provided on the other side of each infrared transceiver board (742); the included angle between adjacent infrared emitting lamps (744) is (30)°; two adjacent transceiver boards form a transceiver group, and the first-stage transmission wheel (722), the second-stage transmission wheel (723), and the third-stage transmission wheel (724) are located in the middle of two adjacent transceiver board groups; each infrared transceiver board (742) is directly welded to the main board (741) by 90-degree insertion, and the main board (741) is fixed to the transmission wheel fixing frame (71) by fastening screws.

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