Flexible rolling belt conveyor

Abstract

The flexible rolling belt conveyor includes a plurality of rolling element units (1), each of which includes a support frame (3) with power rollers (2) above, running wheels (4) on both sides, and a chain link unit (5) in the middle, and a guide wheel (6) below the chain link unit (5). The chain link unit (5) includes main chain links (11) and auxiliary chain links (12), which are hingedly connected via vertical hinge shafts (15) and horizontal hinge shafts (14), respectively, and the vertical hinge shafts and horizontal hinge shafts form a crisscross structure with no contact at the centers of the crisscrosses. The plurality of rolling element units (1) are connected in sequence from front to back via the chain link units (5), and the rolling element units (1) are rotatable in both horizontal and vertical directions, forming a continuous flexible conveying rolling belt. This conveyor can rotate in both directions simultaneously, and its short chain link unit and small turning radius make it suitable for complex warehouse storage and transportation work situations, such as small warehouse storage spaces and narrow transfer spaces. It is less likely to malfunction, such as items getting caught, making transportation more stable and reliable.

Description

Technical Field

[0001] The present invention belongs to the technical field of conveyors, and specifically relates to a flexible rolling belt conveyor.

Background Art

[0002] For various reasons, especially when the space is narrow, it is very difficult to load and unload goods, parcels, and packages. Conveyor workers usually have to bend forward or kneel for a long time and repeatedly convey goods, parcels, and packages from the conveyor to the warehouse storage facility or vice versa under very uncomfortable circumstances. Continuing such work for a long time not only reduces the efficiency of loading and unloading but may also impose a serious burden on the knees and waists of conveyor workers.

[0003] Chinese Patent CN109969734A discloses a telescopic flexible conveyor attached to a cargo cart, including a frame, a bottom plate, a main conveying unit, a telescopic mechanism, a flexible roller conveyor, a head conveying unit, and a transfer plate. The patent can meet the needs in different directions and different heights during the cargo conveying process. However, the flexible roller conveyor connects the rear end of each intermediate connecting member to the front end of the fixed connecting member of the frame holder via bolts and connects the front end of the intermediate connecting member to the rear end of the fixed connecting member of the frame holder via pins. As a result, the chain link unit of the flexible roller conveyor is long, the turning radius is large, and it cannot realize conveying in complex working conditions such as small warehouse storage and narrow conveying space. Also, the distance between two adjacent power rollers is large, and articles are likely to get caught during the corner conveying process, affecting the stability and smoothness of conveying.

Summary of the Invention

[0004] The present invention aims to solve at least one technical problem present in the background art, enabling simultaneous horizontal and vertical rotation, continuous transport of cargo, luggage, and parcels between transporters and warehouse facilities, improving loading and unloading efficiency, and preventing industrial accidents. Furthermore, because the chain link unit is short, the turning radius is small, and the distance between two adjacent power rollers is small, it is adaptable to complex warehouse storage and transport work situations such as small warehouse storage spaces and narrow transfer spaces. The present invention aims to provide a flexible rolling belt conveyor that is less prone to malfunctions such as goods getting caught or equipment damage, resulting in more stable and reliable transport.

[0005] To achieve the above technical objectives, the present invention employs the following technical means.

[0006] A flexible rolling belt conveyor comprising a plurality of rolling element units, each rolling element unit including a support frame having a power roller at the top, running wheels on both sides, and a chain link unit in the middle, with a guide wheel below the chain link unit, the plurality of rolling element units being connected sequentially front to back via the chain link unit, the rolling element units being rotatable along the horizontal and vertical directions, and forming a continuous flexible conveying rolling belt, The chain link unit includes a main chain link and an auxiliary chain link, a horizontal lug is provided in the middle of the front end of the main chain link, a main vertical hinge hole is provided vertically in the horizontal lug, vertical lugs are provided on both sides of the rear end of the main chain link, and main lateral hinge holes are provided horizontally in the vertical lugs. The auxiliary chain link is provided with an auxiliary vertical hinge hole that fits the main vertical hinge hole and an auxiliary horizontal hinge hole that fits the main horizontal hinge hole, and the auxiliary vertical hinge hole and the auxiliary horizontal hinge hole are provided on the same plane. The main vertical hinge hole and the auxiliary vertical hinge hole are hinge-connected via a vertical hinge axis, the main horizontal hinge hole and the auxiliary horizontal hinge hole are hinge-connected via a horizontal hinge axis, and the horizontal hinge axis and the vertical hinge axis form a cross-shaped intersection structure, with the centers of the cross-shaped intersection not in contact.

[0007] Furthermore, the main chain link of the chain link unit is further provided with a position limiting groove structure that includes a lateral position limiting groove provided on the rear side of the main longitudinal hinge hole and a longitudinal position limiting groove provided on the front side of the main lateral hinge hole. The auxiliary chain link is provided with a position limiting hole structure that includes a lateral position limiting hole provided on the rear side of the auxiliary longitudinal hinge hole and a vertical position limiting hole provided on the front side of the auxiliary lateral hinge hole, corresponding to the position limiting groove structure. The lateral position limiting groove and the lateral position limiting hole are connected via a vertical position limiting pin to perform horizontal lateral position limiting, and the vertical position limiting groove and the vertical position limiting hole are connected via a lateral position limiting pin to perform vertical vertical position limiting.

[0008] Furthermore, both the lateral position limiting groove and the vertical position limiting groove are fan-shaped through-hole grooves.

[0009] Furthermore, anti-tipping wheels are provided alternately at the front and rear below the chain link unit.

[0010] Furthermore, the lateral hinge axis consists of two lateral short axes, the vertical hinge axis penetrates the chain link unit from top to bottom, and a guide ring is provided at the bottom of the vertical hinge axis.

[0011] Furthermore, the support frame is composed of two half-frames, one end of which is fixedly connected to the main chain link of the chain link unit via a first side connecting plate, and the other end of which is connected to the side protective cover via a second side connecting plate, and the running wheel is attached to the inside of the bottom of the second side connecting plate.

[0012] Furthermore, the two first side connecting plates on the left and right of the support frame are provided diagonally opposite each other in the front and rear directions, and anti-tipping wheels are provided on the outer bottom of the first side connecting plates, with the two anti-tipping wheels being provided alternately in the front and rear directions below the chain link unit.

[0013] Furthermore, the power roller has an adhesive coating on its surface and a conical shape with a larger diameter at both ends and a smaller diameter in the middle.

[0014] Furthermore, the guide wheel is provided with a vertical U-shaped guide rail.

[0015] Furthermore, the aforementioned running wheels are provided with a set of horizontal U-shaped guide rails.

[0016] Compared to the prior art, the present invention has the following beneficial effects.

[0017] (1) The chain link unit of the present invention has auxiliary vertical hinge holes on the same plane, and the horizontal hinge axis and vertical hinge axis are formed in a cross-intersection structure, with the centers of the cross intersection not in contact. Due to the above structural design, when the chain link unit of the present invention is connected in series, the entire device can rotate by a certain angle simultaneously in both horizontal and vertical directions, enabling continuous transport of cargo, luggage, and parcels between transporters and warehouse storage facilities, improving loading and unloading efficiency, avoiding industrial accidents, and compared with the prior art patent CN109969734A, the chain link unit of the present invention has hinge axes in both directions that intersect in a cross shape, with the centers not in contact and provided on the same plane, resulting in a shorter chain link unit and a smaller turning radius, which can meet the transport needs of more complex work situations such as small warehouse storage spaces and narrow transfer spaces. In addition, because the chain link unit is shorter and the distance between two adjacent power rollers is smaller, it is less likely for items to get caught in places such as the turning radius, resulting in more stable, smooth, and reliable transport.

[0018] (2) The chain link unit of the present invention is provided with a fan-shaped position limiting groove structure, which can limit the rotational position of the flexible rolling belt conveyor in both the horizontal and vertical directions. This effectively avoids situations where the distance between two adjacent power rollers before and after the rotational position is too large, causing the goods to get stuck, the conveyance to stop temporarily, or the equipment to be damaged, thus ensuring that the conveyance is more stable, smooth, and reliable. Furthermore, the specific position limiting angles of the fan-shaped position limiting groove structure in both directions can be set as needed, allowing for precise control of the position limit and further ensuring the reliability of the conveyance equipment.

[0019] (3) In the present invention, when anti-tipping wheels are alternately provided below the chain link unit and multiple chain link units are connected in front and behind, the two alternating anti-tipping wheels of the chain link unit located in the intermediate segment combine with the anti-tipping wheels of the adjacent front and rear chain link units to form four anti-tipping wheels, and the chain link unit in the intermediate segment has four support points for anti-tipping wheels at its bottom, thereby effectively preventing multiple rolling element units from tipping over under the action of external forces during transport and further ensuring the stability and reliability of transport. [Brief explanation of the drawing]

[0020] [Figure 1] This is a schematic diagram of a flexible rolling belt conveyor according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of a rolling element unit according to an embodiment of the present invention. [Figure 3] This is a front view of a rolling element unit according to an embodiment of the present invention. [Figure 4] This is a top view of a rolling element unit according to an embodiment of the present invention. [Figure 5] This is a left side view of a rolling element unit according to an embodiment of the present invention. [Figure 6] This is a schematic diagram of a chain link unit according to an embodiment of the present invention. [Figure 7] This is a schematic diagram of the main chain link according to an embodiment of the present invention. [Figure 8] It is a schematic structural diagram of an auxiliary chain link according to an embodiment of the present invention. [Figure 9] It is a schematic structural diagram of a power roller according to an embodiment of the present invention. [Figure 10] It is a schematic structural diagram of a support frame according to an embodiment of the present invention. [Figure 11] It is a bottom view when a plurality of rolling element units according to an embodiment of the present invention are connected. [Figure 12] It is a schematic structural diagram when a flexible rolling belt conveyor according to an embodiment of the present invention rotates horizontally. [Figure 13] It is a schematic structural diagram when a flexible rolling belt conveyor according to an embodiment of the present invention rotates in the vertical direction.

Embodiments for Carrying Out the Invention

[0021] Hereinafter, while referring to the drawings in the embodiments of the present invention, the technical means in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained on the premise that those skilled in the art do not perform creative labor all belong to the protection scope of the present invention.

[0022] In the description of the present invention, the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "up", "one side", "inside", "front part", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description and simplification of the description of the present invention, and does not indicate or imply that the shown device or element must have a specific orientation and be configured and operated in a specific orientation, so it should not be understood as limiting the present invention.

[0023] In the present invention, unless otherwise explicitly stated or limited, terms such as "attachment," "installation," "connection," "fixed," and "rotational connection" should be understood in a broad sense. For example, a connection may be fixed, detachably connected, integrated, mechanical, electrical, direct, indirectly connected via an intermediate medium, or be internal communication between two elements or an interaction relationship between two elements. Unless otherwise explicitly stated, a person skilled in the art will be able to understand the specific meaning of these terms in the present invention depending on the specific circumstances.

[0024] (Example 1) As shown in Figures 1 to 13, an embodiment of the present invention provides a flexible rolling belt conveyor including a plurality of rolling element units. As shown in Figure 1, the rolling element unit includes a support frame 3 with a power roller 2 at the top, running wheels 4 on both sides that perform running and supporting functions, and a chain link unit 5 in the middle, and a guide wheel 6 attached below the chain link unit 5, and the plurality of rolling element units are connected sequentially front to back via the chain link unit 5, and the rolling element units can rotate along the horizontal and vertical directions to form a continuous flexible conveying rolling belt.

[0025] As shown in Figures 6-8, the chain link unit 5 includes a main chain link 11 and an auxiliary chain link 12. A horizontal lug is provided in the middle of the front end of the main chain link 11, and a main vertical hinge hole 1101 is provided vertically in the horizontal lug. Vertical lugs are provided on both sides of the rear end of the main chain link 11, and main lateral hinge holes 1103 are provided horizontally in the vertical lugs. The auxiliary chain link 12 is provided with an auxiliary vertical hinge hole 1201 that fits the main vertical hinge hole 1101 and an auxiliary lateral hinge hole 1203 that fits the main lateral hinge hole 1103. As shown in Figures 4 and 6, the auxiliary vertical hinge hole 1201 and the auxiliary lateral hinge hole 1203 are provided on the same plane, the main vertical hinge hole 1101 and the auxiliary vertical hinge hole 1201 are hinge-connected via a vertical hinge shaft 15, the main lateral hinge hole 1103 and the auxiliary lateral hinge hole 1203 are hinge-connected via a lateral hinge shaft 14, and the lateral hinge shaft 14 and the vertical hinge shaft 15 form a cross-shaped intersection structure, with the centers of the cross-shaped intersection not in contact. Specifically, either the vertical hinge axis or the horizontal hinge axis may be hinged together as two short axes, or both the vertical and horizontal hinge axes may be hinged together as two short axes. In the embodiment of the present invention, the horizontal hinge axis 14 consists of two horizontal short axes, and the vertical hinge axis 15 penetrates the chain link unit 5 from top to bottom. Furthermore, a guide wheel 6 is provided at the bottom of the vertical hinge axis 15, which cooperates with a set of vertical U-shaped guide rails 1301 to provide positioning guidance during transport.

[0026] In the embodiment of the present invention, the auxiliary vertical hinge hole 1201 and the auxiliary horizontal hinge hole 1203 are provided on the same plane, and the horizontal hinge shaft 14 and the vertical hinge shaft 15 form a cross-shaped intersection structure, with the centers of the cross intersection not in contact. Due to the above structural design, the chain link unit of the present invention has the following beneficial effects.

[0027] (1) When the chain link units of the present invention are connected in series, the auxiliary chain link 12, which is on the same plane as the hinge axis, is used as the plane of rotation (see Figures 6 and 3). The front main chain link 11 is rotatable up and down about the lateral hinge axis 14, and the rear main chain link 11 is rotatable left and right horizontally about the vertical hinge axis 15. As a result, the entire device can rotate by a certain angle simultaneously in both the horizontal and vertical directions (see Figures 12 and 13), enabling continuous transport of cargo, luggage, and parcels between transport machines and warehouse storage facilities, improving loading and unloading efficiency, and avoiding industrial accidents.

[0028] (2) Compared to the prior art patent CN109969734A, the hinge axes in both directions of the chain link unit of the present invention intersect in a cross shape, their centers do not contact each other, and are provided on the same plane. As a result, the chain link unit is shorter and has a smaller turning radius, which can meet the transport needs of more complex work situations such as small warehouse storage spaces and narrow transfer spaces.

[0029] (3) Compared to the prior art patent CN109969734A, the hinge axes of the chain link unit of the present invention intersect in a cross shape, their centers do not contact each other, and are provided on the same plane. As a result, the chain link unit is shorter and the distance between two adjacent power rollers is smaller, so that the goods are less likely to get caught in places such as the turning radius, and the transport is more stable, smoother, and more reliable.

[0030] In an embodiment of the present invention, as shown in Figure 9, the power roller 2 has an adhesive coating on its surface and a conical shape with a larger diameter at both ends and a smaller diameter in the middle. This effectively prevents cargo, luggage, and parcels from slipping off the rolling belt due to centrifugal force in the curved sections of the flexible rolling belt conveyor, thereby ensuring the reliability of the conveyance.

[0031] In an embodiment of the present invention, as shown in Figure 10, the support frame 3 is composed of two half frames, one end of which is fixedly connected to the main chain link 11 of the chain link unit 5 via a first side connecting plate 301, and the other end of which is connected to the side protective cover 10 via a second side connecting plate 302, and the running wheel 4 is attached to the inside of the bottom of the second side connecting plate 302.

[0032] As shown in Figure 3, in some other embodiments, in addition to the cooperation between the guide wheel 6 and the vertical U-shaped guide rail 1301, a horizontal U-shaped guide rail 1302 is provided that is set with the running wheel 4. The purpose of this configuration is as follows: The cooperation between the guide wheel 6 and the vertical U-shaped guide rail 1301 ensures that horizontal left-right positioning is mainly achieved, and the cooperation between the running wheel 4 and the horizontal U-shaped guide rail 1302 ensures that vertical up-down positioning is mainly achieved. By providing these positioning guide rails in both directions, the transport stability and transport reliability of the device at any horizontal and vertical rotation angle can be further ensured.

[0033] (Example 2) The embodiments of the present invention are based on Embodiment 1 and have the following improvements.

[0034] As shown in Figures 6 to 8, the main chain link 11 of the chain link unit 5 is further provided with a position limiting groove structure including a lateral position limiting groove 1102 provided on the rear side of the main longitudinal hinge hole 1101 and a longitudinal position limiting groove 1104 provided on the front side of the main lateral hinge hole 1103. Both the lateral position limiting groove 1102 and the longitudinal position limiting groove 1104 are fan-shaped through-hole grooves, and the angle of the fan-shaped through-hole groove is specifically set as needed.

[0035] The auxiliary chain link 12 is provided with a position limiting hole structure that corresponds to the position limiting groove structure, including a lateral position limiting hole 1202 provided on the rear side of the auxiliary longitudinal hinge hole 1201 and a longitudinal position limiting hole 1204 provided on the front side of the auxiliary lateral hinge hole 1203.

[0036] The lateral position limiting groove 1102 and the lateral position limiting hole 1202 are connected via a vertical position limiting pin 8 (see Figure 2) to perform horizontal lateral position limiting, restricting the rotation angle of the rear main chain link 11 as it rotates horizontally left and right around the vertical hinge axis 15 (see Figure 4). The vertical position limiting groove 1104 and the vertical position limiting hole 1204 are connected via a lateral position limiting pin 9 to perform vertical vertical position limiting, restricting the rotation angle of the front main chain link 11 as it rotates vertically up and down around the lateral hinge axis 14 (see Figure 3 or Figure 6).

[0037] In embodiments of the present invention, by providing a fan-shaped position limiting groove structure, rotational position limiting can be performed in both the horizontal and vertical directions of the flexible rolling belt conveyor. This avoids situations where the distance between two adjacent power rollers before and after the rotational position is too large, which can cause items to get stuck, temporarily halt transport, or damage the equipment, thereby ensuring more stable, smooth, and reliable transport. Furthermore, the specific position limiting angles of the fan-shaped position limiting groove structure in both directions can be set as needed, allowing for precise control of position limiting and further ensuring the reliability of the transport system.

[0038] (Example 3) The embodiments of the present invention are based on Example 1 or 2 and have the following improvements.

[0039] As shown in Figures 1-5 and Figure 10, anti-tipping wheels 7 are alternately provided at the front and rear below the chain link unit 5.

[0040] Specifically, the support frame 3 is composed of two half-frames, one end of which is fixedly connected to the main chain link 11 of the chain link unit 5 via a first side connecting plate 301, and the other end of which is connected to the side protective cover 10 via a second side connecting plate 302. The running wheels 4 are attached to the inside bottom of the second side connecting plate 302. The two left and right first side connecting plates 301 of the support frame 3 are arranged diagonally opposite each other in the front and rear directions. Anti-tipping wheels 7 are provided on the outside bottom of the first side connecting plates 301, and the two anti-tipping wheels 7 are arranged alternately in the front and rear directions below the chain link unit 5.

[0041] The purpose of this configuration is as follows: As shown in Figure 11, the anti-tipping wheels 7 are provided alternately in the front and rear directions below the chain link unit 5. When multiple chain link units 5 are connected in front and rear directions, the two alternating anti-tipping wheels 7 of the chain link unit 5 located in the intermediate segment combine with the anti-tipping wheels 7 of the adjacent front and rear chain link units 5 to form four anti-tipping wheels. This allows the chain link unit 5 in the intermediate segment to have four support points for the anti-tipping wheels at its bottom, effectively preventing multiple rolling element units from tipping over under external force during transport, and further ensuring the stability and reliability of transport.

[0042] The above are merely embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention should all be included within the scope of protection of the present invention. [Explanation of Symbols]

[0043] 1 Rolling element unit 2 Power Roller 3. Support frame 301 First side connecting plate 302 Second side connecting plate 4 wheels 5 Chain link unit 6 Guide Rings 7 Anti-tip wheels 8. Vertical position limiting pins 9. Lateral position limiting pins 10 Side protective cover 11 Main chain links 1101 Main vertical hinge hole 1102 Lateral position limiting groove 1103 Main lateral hinge hole 1104 Longitudinal position limiting groove 12 Auxiliary chain links 1201 Auxiliary vertical hinge hole 1202 Lateral position limiting hole 1203 Auxiliary lateral hinge hole 1204 Vertical position limiting hole 1301 Vertical U-shaped guide rail 1302 Horizontal U-shaped guide rail 14. Lateral hinge axis 15. Vertical hinge axis

Claims

1. A flexible rolling belt conveyor comprising a plurality of rolling element units, each rolling element unit including a support frame having a power roller at the top, running wheels on both sides, and a chain link unit in the middle, with a guide wheel below the chain link unit, the plurality of rolling element units being connected sequentially front to back via the chain link unit, the rolling element units being rotatable along the horizontal and vertical directions, and forming a continuous flexible conveying rolling belt, The chain link unit includes a main chain link and an auxiliary chain link, a horizontal lug is provided in the middle of the front end of the main chain link, a main vertical hinge hole is provided vertically in the horizontal lug, vertical lugs are provided on both sides of the rear end of the main chain link, and main lateral hinge holes are provided horizontally in the vertical lugs. The auxiliary chain link is provided with an auxiliary vertical hinge hole that fits the main vertical hinge hole and an auxiliary horizontal hinge hole that fits the main horizontal hinge hole, and the auxiliary vertical hinge hole and the auxiliary horizontal hinge hole are provided on mutually perpendicular surfaces. The main vertical hinge hole and the auxiliary vertical hinge hole are hinge-connected via a vertical hinge axis, the main horizontal hinge hole and the auxiliary horizontal hinge hole are hinge-connected via a horizontal hinge axis, and the horizontal hinge axis and the vertical hinge axis form a cross-intersection structure, with the centers of the cross-intersection not in contact. The main chain link of the chain link unit is further provided with a position limiting groove structure including a lateral position limiting groove provided on the rear side of the main longitudinal hinge hole. The auxiliary chain link is provided with a position-restricting hole structure that includes a lateral position-restricting hole located behind the auxiliary longitudinal hinge hole, corresponding to the position-restricting groove structure. The lateral position limiting groove and the lateral position limiting hole are connected via a vertical position limiting pin to perform horizontal lateral position limiting. A flexible rolling belt conveyor characterized by the following features.

2. A flexible rolling belt conveyor comprising a plurality of rolling element units, wherein each rolling element unit includes a support frame having a power roller on top, running wheels on both sides, and a chain link unit in the middle, a guide wheel provided below the chain link unit, the plurality of rolling element units being connected sequentially front to back via the chain link unit, the rolling element units being rotatable along the horizontal and vertical directions, and forming a continuous flexible conveying rolling belt, The chain link unit includes a main chain link and an auxiliary chain link, a horizontal lug is provided in the middle of the front end of the main chain link, a main vertical hinge hole is provided vertically in the horizontal lug, vertical lugs are provided on both sides of the rear end of the main chain link, and main lateral hinge holes are provided horizontally in the vertical lugs. The auxiliary chain link is provided with an auxiliary vertical hinge hole that fits the main vertical hinge hole and an auxiliary horizontal hinge hole that fits the main horizontal hinge hole, and the auxiliary vertical hinge hole and the auxiliary horizontal hinge hole are provided on mutually perpendicular surfaces. The main vertical hinge hole and the auxiliary vertical hinge hole are hinge-connected via a vertical hinge axis, the main horizontal hinge hole and the auxiliary horizontal hinge hole are hinge-connected via a horizontal hinge axis, and the horizontal hinge axis and the vertical hinge axis form a cross-intersection structure, with the centers of the cross-intersection not in contact. The main chain link of the chain link unit is further provided with a position limiting groove structure including a vertical position limiting groove provided on the front side of the main lateral hinge hole, The auxiliary chain link is provided with a position-restricting hole structure that includes a vertical position-restricting hole located in front of the auxiliary lateral hinge hole, corresponding to the position-restricting groove structure. The vertical position limiting groove and the vertical position limiting hole are connected via a horizontal position limiting pin to perform vertical position limiting. A conveyor characterized by the following features.

3. Below the chain link unit, anti-tipping wheels are provided alternately at the front and rear. The conveyor according to feature 1.

4. A flexible rolling belt conveyor comprising a plurality of rolling element units, wherein each rolling element unit includes a support frame having a power roller on top, running wheels on both sides, and a chain link unit in the middle, a guide wheel provided below the chain link unit, the plurality of rolling element units being connected sequentially front to back via the chain link unit, the rolling element units being rotatable along the horizontal and vertical directions, and forming a continuous flexible conveying rolling belt, The chain link unit includes a main chain link and an auxiliary chain link, a horizontal lug is provided in the middle of the front end of the main chain link, a main vertical hinge hole is provided vertically in the horizontal lug, vertical lugs are provided on both sides of the rear end of the main chain link, and main lateral hinge holes are provided horizontally in the vertical lugs. The auxiliary chain link is provided with an auxiliary vertical hinge hole that fits the main vertical hinge hole and an auxiliary horizontal hinge hole that fits the main horizontal hinge hole, and the auxiliary vertical hinge hole and the auxiliary horizontal hinge hole are provided on mutually perpendicular surfaces. The main vertical hinge hole and the auxiliary vertical hinge hole are hinge-connected via a vertical hinge axis, the main horizontal hinge hole and the auxiliary horizontal hinge hole are hinge-connected via a horizontal hinge axis, and the horizontal hinge axis and the vertical hinge axis form a cross-intersection structure, with the centers of the cross-intersection not in contact. The aforementioned lateral hinge axis consists of two lateral short axes, the aforementioned vertical hinge axis penetrates the chain link unit from top to bottom, and a guide ring is provided at the bottom of the aforementioned vertical hinge axis. A conveyor characterized by the following features.

5. A flexible rolling belt conveyor comprising a plurality of rolling element units, wherein each rolling element unit includes a support frame having a power roller on top, running wheels on both sides, and a chain link unit in the middle, a guide wheel provided below the chain link unit, the plurality of rolling element units being connected sequentially front to back via the chain link unit, the rolling element units being rotatable along the horizontal and vertical directions, and forming a continuous flexible conveying rolling belt, The chain link unit includes a main chain link and an auxiliary chain link, a horizontal lug is provided in the middle of the front end of the main chain link, a main vertical hinge hole is provided vertically in the horizontal lug, vertical lugs are provided on both sides of the rear end of the main chain link, and main lateral hinge holes are provided horizontally in the vertical lugs. The auxiliary chain link is provided with an auxiliary vertical hinge hole that fits the main vertical hinge hole and an auxiliary horizontal hinge hole that fits the main horizontal hinge hole, and the auxiliary vertical hinge hole and the auxiliary horizontal hinge hole are provided on mutually perpendicular surfaces. The main vertical hinge hole and the auxiliary vertical hinge hole are hinge-connected via a vertical hinge axis, the main horizontal hinge hole and the auxiliary horizontal hinge hole are hinge-connected via a horizontal hinge axis, and the horizontal hinge axis and the vertical hinge axis form a cross-intersection structure, with the centers of the cross-intersection not in contact. The support frame consists of two half-frames, one end of which is fixedly connected to the main chain link of the chain link unit via a first side connecting plate, and the other end of which is connected to the side protective cover via a second side connecting plate. The running wheel is attached to the inside of the bottom of the second side connecting plate. A conveyor characterized by the following features.

6. The two first side connecting plates on the left and right of the support frame are arranged diagonally opposite to each other in the front-to-back direction, and anti-tipping wheels are provided on the outer bottom of the first side connecting plates, with the two anti-tipping wheels being arranged alternately in the front-to-back direction below the chain link unit. The conveyor according to feature 5.

7. The power roller has an adhesive coating on its surface and a conical shape with a larger diameter at both ends and a smaller diameter in the middle. The conveyor according to any one of claims 1 to 3.

8. The aforementioned guide wheel is provided with a set of vertical U-shaped guide rails. The conveyor according to any one of claims 1 to 3.

9. The aforementioned running wheels are provided with a set of horizontal U-shaped guide rails. The conveyor according to feature 8.

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