Compact shelving moving column chassis roller motor driving structure

Abstract

The utility model discloses a compact shelving moving column chassis roller motor driving structure, a single driving motor drives and links 2-3 compact shelving chassis rollers, and when two compact shelving chassis rollers are adopted, the center connecting line of the two compact shelving chassis rollers is of an oblique line distribution structure relative to the length direction of a compact shelving moving column; when the three compact shelving chassis rollers are adopted, the three compact shelving chassis rollers are of an isosceles triangle position distribution structure or a common triangle position distribution structure in the length direction of the compact shelving moving column, namely the common triangle position distribution structure with three sides different in length in a triangle formed by the three compact shelving chassis rollers. Supporting points for supporting bearing force of the compact shelving moving column can be better dispersed, the requirement for supporting bearing force of compact shelving chassis rollers is lowered, the supporting strength of the compact shelving moving column chassis can be lowered, and the use supporting effect of the compact shelving moving column is improved.

Description

Technical Field

[0001] This utility model relates to a mobile shelving unit, and more particularly to a mobile shelving unit moving column chassis roller motor drive structure used in mobile shelving unit moving drive technology. Background Technology

[0002] Mobile shelving units are widely used in government agencies, enterprises, and other organizations for the intensive storage and management of books, archives, financial documents, samples, and other items due to their higher storage capacity and more efficient space-saving effect compared to traditional bookshelves, shelves, or filing cabinets. Existing electric mobile shelving units typically consist of several sets of steel rails placed on the ground, combining one or more fixed columns and several sets of movable columns into a single unit. A single drive motor at the bottom of the unit controls the steel wheels to roll along the rails, opening the passageways between adjacent columns. Finally, the desired movable column is opened manually, allowing managers or users to enter the passageways for storage or retrieval of items. This is a high-density storage facility. Because the drive motors of existing mobile shelving units typically control two rollers on the chassis with one motor, and the radial center planes of the two rollers are on the same vertical center plane (see...), the mobile shelving units are generally designed to be oriented in a way that allows for efficient storage and management. Figure 5 (As shown in position 20 of the two mobile shelving chassis rollers). However, such a two-roller drive distribution structure of the mobile shelving chassis can easily lead to a relatively concentrated support point for the load-bearing capacity of the mobile shelving moving column, which places high demands on both the load-bearing capacity of the mobile shelving chassis rollers themselves and the support strength of the mobile shelving moving column chassis. Especially when mobile shelving is used to increase its storage capacity, the length of both the mobile shelving moving column and the fixed column is usually made relatively long, the above-mentioned... Figure 5 The position requirements of the two mobile shelving chassis rollers 20 shown will also place higher demands on the load-bearing capacity of the mobile shelving chassis rollers themselves, and higher demands on the support strength of the mobile shelving moving column chassis. Therefore, conventional mobile shelving moving column motor drive technology needs to use a drive motor to drive the driven rollers to meet the improved support, which brings about higher requirements for the motor power of the single drive motor of the mobile shelving and other potential problems.

[0003] Patent No. ZL 202110213054.6, published on July 8, 2022, discloses an integrated transmission wheel for a mobile shelving chassis. The invention addresses the need for a mobile shelving chassis integrated transmission wheel that is easy to manufacture and inspect, and eliminates safety hazards. The integrated transmission wheel for a mobile shelving chassis includes: an outer frame with a dual-axis motor mounted on it; a drive shaft rotatably mounted on the outer frame and fixedly connected to the output shaft of the dual-axis motor; and a driven shaft rotatably mounted on the outer frame. This invention drives the dual-axis motor to rotate the drive shaft clockwise. The clockwise rotation of the drive shaft causes the left roller to rotate clockwise, and the clockwise rotation of the drive shaft also drives the right roller to rotate clockwise. Simultaneously, the chain tension can be adjusted by twisting a screw to ensure that the clockwise rotation speeds of the left and right rollers are consistent. This design facilitates the manufacture and inspection of the transmission wheel and eliminates safety hazards. This solution also uses a single dual-axis motor to drive the left and right side rollers to move the mobile shelving unit, and the above-mentioned problems still exist. Utility Model Content

[0004] This utility model addresses the problems of existing mobile shelving unit chassis rollers, where the support points for the load-bearing capacity of the mobile shelving unit are relatively concentrated, placing high demands on both the load-bearing capacity of the rollers themselves and the support strength of the mobile shelving unit chassis. It provides a motor-driven structure for the mobile shelving unit chassis rollers that better distributes the load-bearing capacity, reduces the load-bearing capacity requirements of the rollers themselves, lowers the support strength of the mobile shelving unit chassis, and improves the support effect of the mobile shelving unit.

[0005] The specific technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a mobile shelving unit chassis roller motor drive structure, including a drive motor, characterized in that: a single drive motor drive link is provided with 2 or 3 mobile shelving unit chassis rollers or mobile shelving unit chassis rolling bearings. When using 2 mobile shelving unit chassis rollers or mobile shelving unit chassis rolling bearings, the radial center planes of the 2 mobile shelving unit chassis rollers or mobile shelving unit chassis rolling bearings are staggered and have a certain degree of misalignment and separation space distance from each other along the length direction of the mobile shelving unit, that is, the center line connecting the 2 mobile shelving unit chassis rollers or mobile shelving unit chassis rolling bearings is obliquely distributed relative to the length direction of the mobile shelving unit. When using 3 mobile shelving unit chassis rollers or mobile shelving unit chassis rolling bearings, the 3 mobile shelving unit chassis rollers or mobile shelving unit chassis rolling bearings are distributed in an isosceles triangle position structure along the length direction of the mobile shelving unit, or in a general triangle position distribution structure, that is, in a general triangle position distribution structure in which the three sides of the triangle formed by the 3 mobile shelving unit chassis rollers or mobile shelving unit chassis rolling bearings are all of different lengths. A diagonally distributed or triangular distribution structure of the rollers or rolling bearings on the mobile shelving unit's chassis can better disperse the support points of the mobile shelving unit's load-bearing capacity, reducing the load-bearing requirements of the chassis rollers themselves. This reduces the chassis support strength of the mobile shelving unit and improves the stability, reliability, and effectiveness of the support provided by the chassis rollers or rolling bearings to the overall mobile shelving unit, thereby enhancing its support performance. This technology can be applied to mobile shelving units with ground-based tracks as well as to multi-motor driven mobile shelving units without ground-based tracks.

[0006] Preferably, when using two mobile shelving chassis rollers or mobile shelving chassis rolling bearings, the drive motor output shaft is equipped with two output drive sprockets. Each of the two output drive sprockets is equipped with a synchronous transmission chain, and the other end of each synchronous transmission chain is equipped with an output driven sprocket. Each of the two output driven sprockets is equipped with a synchronous transmission output shaft, and each of the two synchronous transmission output shafts is equipped with a mobile shelving chassis roller or mobile shelving chassis rolling bearing. The radial center surfaces of the two mobile shelving chassis rollers or mobile shelving chassis rolling bearings are staggered along the length of the mobile shelving moving column, with a certain degree of misalignment and spacing. This improves the stability and reliability of the overall misalignment support for the mobile shelving moving column when using two mobile shelving chassis rollers or mobile shelving chassis rolling bearings, thus improving the stability of the mobile shelving moving column during use.

[0007] Preferably, when using three mobile shelving chassis rollers or mobile shelving chassis rolling bearings, the drive motor output shaft is equipped with two output drive sprockets, each with a synchronous transmission chain. The other end of each synchronous transmission chain is equipped with an output driven sprocket, and each of the two driven sprockets is equipped with a synchronous transmission output shaft. Each of the two synchronous transmission output shafts is equipped with a mobile shelving chassis roller or mobile shelving chassis rolling bearing. The radial center planes of the two mobile shelving chassis rollers or mobile shelving chassis rolling bearings are staggered along the length of the mobile shelving movement column, with a certain degree of misalignment and separation. Furthermore, the drive motor output shaft is also equipped with mobile shelving chassis rollers or mobile shelving chassis rolling bearings. The three mobile shelving chassis rollers or mobile shelving chassis rolling bearings respectively installed on the drive motor output shaft and the two synchronous transmission output shafts are arranged in a common triangular configuration along the length of the mobile shelving movement column. Improve the stability and reliability of the overall misalignment support of the mobile shelving unit when using three mobile shelving unit chassis rollers or mobile shelving unit chassis rolling bearings, thereby enhancing the stability of the mobile shelving unit during use.

[0008] Preferably, when using three mobile shelving chassis rollers or mobile shelving chassis rolling bearings, the drive motor output shaft is equipped with two output drive sprockets, each with a synchronous transmission chain. The other end of each synchronous transmission chain is equipped with an output driven sprocket, and each of the two driven sprockets is equipped with a synchronous transmission output shaft. Each of the two synchronous transmission output shafts is equipped with a mobile shelving chassis roller or mobile shelving chassis rolling bearing, and the radial center planes of these two mobile shelving chassis rollers or mobile shelving chassis rolling bearings are located on the same vertical center plane. The drive motor output shaft is also equipped with mobile shelving chassis rollers or mobile shelving chassis rolling bearings. The three mobile shelving chassis rollers or mobile shelving chassis rolling bearings respectively set on the drive motor output shaft and the two synchronous transmission output shafts are arranged in an isosceles triangle configuration along the length of the mobile shelving moving column. That is, the two mobile shelving chassis rollers or mobile shelving chassis rolling bearings at the base of the isosceles triangle are the mobile shelving chassis rollers or mobile shelving chassis rolling bearings respectively set on the three synchronous transmission output shafts. Improve the stability and reliability of the overall misalignment support of the mobile shelving unit when using three mobile shelving unit chassis rollers or mobile shelving unit chassis rolling bearings, thereby enhancing the stability of the mobile shelving unit during use.

[0009] Preferably, the mobile shelving chassis rollers or rolling bearings mounted on the drive motor output shaft are positioned closer to the two output shaft drive sprockets along the length of the mobile shelving unit, relative to the mobile shelving chassis rollers or rolling bearings mounted on the two synchronous transmission output shafts. This improves the stability and reliability of the misalignment support for the entire mobile shelving unit when using three mobile shelving chassis rollers or rolling bearings, enhances the flexibility, stability, and reliability of the support distribution of the three mobile shelving chassis rollers or rolling bearings, and improves the overall support stability of the mobile shelving unit.

[0010] Preferably, the mobile shelving chassis rollers or rolling bearings mounted on the drive motor output shaft are positioned further away from the two output shaft drive sprockets along the length of the mobile shelving unit, relative to the mobile shelving chassis rollers or rolling bearings mounted on the two synchronous transmission output shafts. This improves the stability and reliability of the misalignment support for the entire mobile shelving unit when using three mobile shelving chassis rollers or rolling bearings, enhances the flexibility, stability, and reliability of the support distribution of the three mobile shelving chassis rollers or rolling bearings, and improves the overall support stability of the mobile shelving unit.

[0011] Preferably, the staggered spacing is adjusted according to the length of the mobile shelving unit; the longer the mobile shelving unit is, the greater the staggered spacing should be. This improves the flexibility, stability, reliability, and effectiveness of the support force distribution for mobile shelving units of different lengths.

[0012] Preferably, the length of the isosceles side of the isosceles triangle is adjusted according to the length of the mobile shelving unit's moving column. The longer the mobile shelving unit's moving column, the larger the length of the isosceles side of the isosceles triangle should be. This improves the flexibility, stability, reliability, and effectiveness of the support force distribution for mobile shelving units of different lengths.

[0013] Preferably, the lengths of the three sides of the ordinary triangle are adjusted according to the length of the mobile shelving unit's moving column. The longer the mobile shelving unit's moving column, the larger the lengths of the three sides of the ordinary triangle used. This improves the flexibility, stability, reliability, and effectiveness of the support force distribution for different lengths of the mobile shelving unit's moving column.

[0014] Preferably, the rollers on the mobile shelving chassis are made of steel and have radial rolling elements perpendicular to the central axis of the motor drive output shaft. The radial rolling elements are either cylindrical with a single flat outer rolling surface or cylindrical with two flat outer rolling surfaces. The cylindrical rolling elements can be straight cylindrical, have a downwardly sloping narrowing side, or have an outwardly arc-shaped convex side. This improves the smoothness and stability of the mobile shelving's opening and closing movement when the mobile shelving unit is moving without track guidance.

[0015] The beneficial effects of this utility model are: the oblique distribution structure or the triangular distribution structure of the mobile shelving chassis rollers or the mobile shelving chassis rolling bearing motor drive distribution structure can better disperse the support points of the mobile shelving moving column, reduce the support load requirement of the mobile shelving chassis rollers themselves, reduce the support strength of the mobile shelving moving column chassis, improve the stability, reliability and effectiveness of the support force of the mobile shelving chassis rollers or the mobile shelving chassis rolling bearings on the overall mobile shelving moving column, and improve the support effect of the mobile shelving moving column. This utility model's technical solution can be applied to multi-motor driven mobile shelving units with or without ground-rail navigation. If the mobile shelving unit without ground-rail navigation uses a multi-motor drive technology, each drive motor uses the aforementioned mobile shelving unit chassis roller drive scheme for its rolling bearings or rollers. This can better satisfy the distributed, effective, stable, and reliable support of the mobile shelving unit's load-bearing capacity, and can achieve better distributed, effective, stable, and reliable support for longer mobile shelving units. Attached image description:

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of a mobile shelving unit with a roller motor drive structure for the chassis.

[0018] Figure 2 This is another schematic diagram of the roller motor drive structure of the mobile shelving unit chassis of this utility model.

[0019] Figure 3 This is another structural schematic diagram of the roller motor drive structure of the mobile shelving unit of this utility model.

[0020] Figure 4 This is a schematic diagram of the chassis rollers in the mobile shelving unit's chassis roller motor drive structure of this utility model.

[0021] Figure 5This is a schematic diagram of the structure of the roller motor drive structure of the mobile shelving unit chassis in the prior art. Detailed Implementation

[0022] Example 1:

[0023] Figure 1 , Figure 4 In the illustrated embodiment, a mobile shelving unit's chassis roller motor drive structure includes a drive motor 10. Each drive motor 10 drives two or three mobile shelving unit chassis rollers, mobile shelving units 20, or chassis rolling bearings. When using two mobile shelving unit chassis rollers or mobile shelving unit chassis rolling bearings, the radial center planes of the two rollers or bearings are staggered along the length of the mobile shelving unit, with a certain degree of misalignment. That is, the center line connecting the two rollers or bearings is obliquely distributed relative to the length of the mobile shelving unit. When using three rollers or bearings, the three rollers form an isosceles triangle along the length of the mobile shelving unit (see...). Figure 2 The positional distribution structure can be either a simple triangle or a triangular distribution structure, meaning a triangle formed by the three rollers or rolling bearings of the mobile shelving chassis where the three sides are all of different lengths (see...). Figure 3 The staggered spacing is adjusted according to the length of the mobile shelving unit's moving column. The longer the mobile shelving unit's moving column, the larger the staggered spacing should be. The drive motor 10 is equipped with a reducer or gearbox (the reducer or gearbox is not shown in the figure; you can refer to or borrow existing technology's installation and configuration scheme for the reducer or gearbox and drive motor).

[0024] When using two mobile shelving chassis rollers 20 or mobile shelving chassis rolling bearings, two output drive sprockets 12 are installed and connected to the output shaft 11 of the drive motor. Synchronous transmission chains 30 are respectively installed and connected to the two output drive sprockets 12. Each of the other ends of the two synchronous transmission chains 30 is equipped with an output driven sprocket 31. Synchronous transmission output shafts 40 are respectively installed and connected to the two synchronous transmission output shafts 40. Mobile shelving chassis rollers 30 or mobile shelving chassis rolling bearings are respectively installed and connected to the two synchronous transmission output shafts 40. The radial center planes of the two mobile shelving chassis rollers 30 or mobile shelving chassis rolling bearings are staggered along the length of the mobile shelving movement column, with a certain degree of misalignment and separation. That is, the center line connecting the two mobile shelving chassis rollers or mobile shelving chassis rolling bearings is obliquely distributed relative to the length of the mobile shelving movement column. Figure 2The diagram shows a configuration where one mobile shelving chassis roller or bearing is on the left and the other is on the right. Alternatively, the configuration could have one roller or bearing on the right and the other on the left.

[0025] The chassis rollers 20 or the chassis rolling bearings of the mobile shelving unit are made of steel. The chassis rollers have radial rolling elements perpendicular to the central axis of the motor drive output shaft 11. These radial rolling elements are cylindrical rolling elements with a flat outer rolling circumferential surface 22 (see...). Figure 4 A). Or a cylindrical rolling element with double flat outer rolling surfaces (see...). Figure 4 D); the cylindrical rolling element is a flat cylindrical rolling element with a flat side surface 21A (see Figure 4 A) A cylindrical rolling element with a downwardly sloping, narrowed side surface 21B (see...) Figure 4 B) or a cylindrical rolling element with an outer arc-shaped convex side 21C (see Figure 4 C), wherein the cylindrical rolling element has a double flat outer rolling circumference (see Figure 4 The columnar side of D) can adopt a flat side 21A, a downwardly sloping and narrowed side 21B, or an outwardly arc-shaped convex side 21C shape. In addition, the radial rolling element can adopt a flat outer rolling circumferential surface 22 (used in mobile shelving services without track navigation) or an outer rolling surface structure that matches a ground track to meet the installation and positioning requirements on the ground track.

[0026] Example 2:

[0027] Figure 2In the illustrated embodiment, when three mobile shelving chassis rollers 30 or mobile shelving chassis rolling bearings are used, two output drive sprockets 12 are mounted and connected to the output shaft 11 of the drive motor. Synchronous transmission chains 30 are respectively mounted and connected to the two output drive sprockets 12. Output driven sprockets 31 are mounted and connected to the other ends of the two synchronous transmission chains 30. Synchronous transmission output shafts 40 are respectively mounted and connected to the two synchronous transmission output shafts 40. Mobile shelving chassis rollers 20 or mobile shelving chassis rolling bearings are respectively mounted and connected to the two mobile shelving chassis. The radial center surfaces of the shelving base rollers 20 or the mobile shelving base rolling bearings are staggered and spaced apart to a certain extent along the length of the mobile shelving movement column (consistent with the length of the drive motor output shaft 11). The drive motor output shaft 11 is also equipped with mobile shelving base rollers 20 or mobile shelving base rolling bearings. The three mobile shelving base rollers 20 or mobile shelving base rolling bearings respectively installed on the drive motor output shaft 11 and the two synchronous transmission output shafts 40 are arranged in a common triangular configuration along the length of the mobile shelving movement column. The length of the three sides of the common triangle is adjusted according to the length of the mobile shelving movement column; the longer the mobile shelving movement column, the larger the length of the three sides of the common triangle.

[0028] The mobile shelving chassis rollers 20 or mobile shelving chassis rolling bearings mounted on the drive motor output shaft 11 are positioned further away from the two output shaft drive sprockets along the length of the mobile shelving moving column (see [reference]). Figure 2 (As shown).

[0029] Alternatively, the mobile shelving chassis rollers 20 or mobile shelving chassis rolling bearings mounted on the drive motor output shaft 11 are positioned relative to the mobile shelving chassis rollers 20 or mobile shelving chassis rolling bearings mounted on the two synchronous conveyor output shafts along the length of the mobile shelving moving column. The mobile shelving chassis rollers or mobile shelving chassis rolling bearings mounted on the drive motor output shaft 11 are positioned closer to the two output shaft drive sprockets mounted on the drive motor output shaft (i.e., relative to...). Figure 2 The installation and connection position of the mobile shelving chassis rollers 20 on the output shaft 11 of the drive motor is adjusted (but not shown separately). The rest of the above implementation scheme is the same as in Embodiment 1.

[0030] Example 3:

[0031] Figure 3In the illustrated embodiment, when three mobile shelving chassis rollers 20 or mobile shelving chassis rolling bearings are used, two output drive sprockets 12 are mounted and connected to the output shaft 11 of the drive motor. Synchronous transmission chains 30 are respectively mounted and connected to the two output drive sprockets 12. Output driven sprockets 31 are mounted and connected to the other ends of the two synchronous transmission chains 30. Synchronous transmission output shafts 40 are respectively mounted and connected to the two synchronous transmission output shafts 40. Mobile shelving chassis rollers 20 or mobile shelving chassis rolling bearings are respectively mounted and connected to the two synchronous transmission output shafts 40. The radial center planes of these two mobile shelving chassis rollers 20 or mobile shelving chassis rolling bearings are located on the same vertical center plane (i.e., these two mobile shelving chassis rollers 20 or mobile shelving chassis rolling bearings). The radial center plane connecting surface is perpendicular to the length direction of the drive motor output shaft 11; and the drive motor output shaft 11 is also equipped with mobile shelving chassis rollers or mobile shelving chassis rolling bearings. The three mobile shelving chassis rollers or mobile shelving chassis rolling bearings respectively set on the drive motor output shaft 11 and the two synchronous transmission output shafts are distributed in an isosceles triangle structure along the length direction of the mobile shelving movement column. That is, the two mobile shelving chassis rollers 20 on the base of the isosceles triangle (that is, the radial center plane connecting surface of these two mobile shelving chassis rollers 20 or mobile shelving chassis rolling bearings is perpendicular to the length direction of the drive motor output shaft 11) or the mobile shelving chassis rolling bearings are mobile shelving chassis rollers or mobile shelving chassis rolling bearings respectively set on the two synchronous transmission output shafts. The length of the isosceles side of the isosceles triangle is adjusted accordingly according to the length of the mobile shelving movement column. The larger the length of the mobile shelving movement column, the larger the length of the isosceles side of the isosceles triangle used. Other aspects are the same as in Embodiments 1 and 2.

[0032] In the description of the positional relationship in this utility model, terms such as "inner", "outer", "upper", "lower", "left", and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] The above content and structure describe the basic principles, main features, and advantages of this utility model, which should be understood by those skilled in the art. The examples and descriptions above are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mobile shelving unit chassis roller motor drive structure, comprising a drive motor, characterized in that: A single drive motor drive link is equipped with 2 or 3 mobile shelving chassis rollers or mobile shelving chassis rolling bearings. When using 2 mobile shelving chassis rollers or mobile shelving chassis rolling bearings, the radial center planes of the 2 mobile shelving chassis rollers or mobile shelving chassis rolling bearings are staggered and separated by a certain degree of misalignment along the length of the mobile shelving movement column. That is, the center line connecting the 2 mobile shelving chassis rollers or mobile shelving chassis rolling bearings is obliquely distributed relative to the length of the mobile shelving movement column. When using 3 mobile shelving chassis rollers or mobile shelving chassis rolling bearings, the 3 mobile shelving chassis rollers or mobile shelving chassis rolling bearings are arranged in an isosceles triangle or a general triangle along the length of the mobile shelving movement column. That is, the triangle formed by the 3 mobile shelving chassis rollers or mobile shelving chassis rolling bearings is a general triangle with three sides of different lengths.

2. The mobile shelving unit's moving column chassis roller motor drive structure according to claim 1, characterized in that: When two mobile shelving chassis rollers or mobile shelving chassis rolling bearings are used, the output shaft of the drive motor is equipped with two output drive sprockets, and the two output shaft drive sprockets are respectively equipped with synchronous transmission chains. The other end of the two synchronous transmission chains is equipped with an output driven sprocket, and the two output driven sprockets are respectively equipped with synchronous transmission output shafts. The two synchronous transmission output shafts are respectively equipped with mobile shelving chassis rollers or mobile shelving chassis rolling bearings. The radial center planes of the two mobile shelving chassis rollers or mobile shelving chassis rolling bearings are staggered and have a certain degree of misalignment and separation space distance along the length of the mobile shelving moving column.

3. The mobile shelving unit's moving column chassis roller motor drive structure according to claim 1, characterized in that: When using three mobile shelving chassis rollers or mobile shelving chassis rolling bearings, the drive motor output shaft is equipped with two output drive sprockets. Each of the two output drive sprockets is equipped with a synchronous transmission chain. The other end of each of the two synchronous transmission chains is equipped with an output driven sprocket. Each of the two output driven sprockets is equipped with a synchronous transmission output shaft. Each of the two synchronous transmission output shafts is equipped with a mobile shelving chassis roller or mobile shelving chassis rolling bearing. The radial center planes of the two mobile shelving chassis rollers or mobile shelving chassis rolling bearings are staggered along the length of the mobile shelving movement column, with a certain degree of misalignment and separation. The drive motor output shaft is also equipped with mobile shelving chassis rollers or mobile shelving chassis rolling bearings. The three mobile shelving chassis rollers or mobile shelving chassis rolling bearings respectively installed on the drive motor output shaft and the two synchronous transmission output shafts are arranged in a common triangular configuration along the length of the mobile shelving movement column.

4. The mobile shelving unit's moving column chassis roller motor drive structure according to claim 1, characterized in that: When using three mobile shelving chassis rollers or mobile shelving chassis rolling bearings, the drive motor output shaft is equipped with two output drive sprockets. Each of the two output drive sprockets is equipped with a synchronous transmission chain, and the other end of each synchronous transmission chain is equipped with an output driven sprocket. Each of the two output driven sprockets is equipped with a synchronous transmission output shaft. Each of the two synchronous transmission output shafts is equipped with a mobile shelving chassis roller or mobile shelving chassis rolling bearing, and the radial center planes of these two mobile shelving chassis rollers or mobile shelving chassis rolling bearings are located on the same vertical center plane. The drive motor output shaft is also equipped with mobile shelving chassis rollers or mobile shelving chassis rolling bearings. The three mobile shelving chassis rollers or mobile shelving chassis rolling bearings respectively set on the drive motor output shaft and the two synchronous transmission output shafts are arranged in an isosceles triangle configuration along the length of the mobile shelving moving column. That is, the two mobile shelving chassis rollers or mobile shelving chassis rolling bearings at the base of the isosceles triangle are the mobile shelving chassis rollers or mobile shelving chassis rolling bearings respectively set on the two synchronous transmission output shafts.

5. The mobile shelving unit's movable column chassis roller motor drive structure according to claim 3 or 4, characterized in that: The mobile shelving chassis rollers or mobile shelving chassis rolling bearings provided on the output shaft of the drive motor are positioned closer to the two output shaft drive sprockets provided on the output shaft of the drive motor, relative to the mobile shelving chassis rollers or mobile shelving chassis rolling bearings provided on the two synchronous transmission output shafts along the length of the mobile shelving moving column.

6. The mobile shelving unit's movable column chassis roller motor drive structure according to claim 3 or 4, characterized in that: The mobile shelving chassis rollers or mobile shelving chassis rolling bearings provided on the output shaft of the drive motor are located further away from the two output shaft drive sprockets provided on the output shaft of the drive motor, relative to the mobile shelving chassis rollers or mobile shelving chassis rolling bearings provided on the two synchronous transmission output shafts along the length of the mobile shelving moving column.

7. The mobile shelving unit's moving column chassis roller motor drive structure according to claim 1, characterized in that: The staggered spacing is adjusted according to the length of the mobile shelving unit's moving column. The longer the mobile shelving unit's moving column is, the larger the staggered spacing is.

8. The mobile shelving unit's moving column chassis roller motor drive structure according to claim 1, characterized in that: The length of the isosceles side of the isosceles triangle is adjusted according to the length of the mobile shelving unit. The longer the mobile shelving unit is, the larger the length of the isosceles side of the isosceles triangle used.

9. The mobile shelving unit's moving column chassis roller motor drive structure according to claim 1, characterized in that: The lengths of the three sides of the ordinary triangle are adjusted according to the length of the mobile shelving unit. The longer the mobile shelving unit is, the larger the lengths of the three sides of the ordinary triangle are.

10. The mobile shelving unit's moving column chassis roller motor drive structure according to claim 1, characterized in that: The rollers of the mobile shelving chassis are made of steel and have radial rolling elements perpendicular to the central axis of the motor drive output shaft. The radial rolling elements are either cylindrical rolling elements with a single flat outer rolling surface or cylindrical rolling elements with double flat outer rolling surfaces. The cylindrical rolling elements are either straight cylindrical rolling elements, cylindrical rolling elements with downwardly sloping and narrowed sides, or cylindrical rolling elements with outwardly arc-shaped convex sides.

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