A roller arrangement

Abstract

The embodiment of the utility model provides a kind of roller device, it is related to steel pipe processing technical field.Roller device includes heat dissipation structure, first bearing structure, second bearing structure and roller structure, heat dissipation structure includes support seat, first heat dissipation box and second heat dissipation box, first heat dissipation box and second heat dissipation box are arranged at support seat with interval;First bearing structure is set in first heat dissipation box, second bearing structure is set in second heat dissipation box, and the both ends of roller structure are set in first bearing structure and second bearing structure respectively;First heat dissipation box and second heat dissipation box are used to pass into coolant, to carry out heat dissipation to first bearing structure and second bearing structure.The heat that is conducted to first bearing structure and second bearing structure by roller structure can be heat dissipated by coolant in first heat dissipation box and second heat dissipation box respectively, so as to take away the heat of bearing seat, avoid bearing to appear expansion jamming phenomenon, ensure continuous stable production, eliminate the security risk when rush repair.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing technology, and more specifically, to a roller device. Background Technology

[0002] In the steel pipe rolling process, the idler roller device serves as an important auxiliary support and guiding equipment. It is usually installed at the inlet, outlet, or between the stands of the rolling mill (such as continuous rolling mill, sizing mill, straightening mill) to support, guide, and stabilize the movement of the steel pipe (or billet) during the rolling process.

[0003] However, in actual production, the tubes output from the piercing machine reach extremely high temperatures. When the tubes pass through the borax blasting process, the idler rollers directly bear the high-temperature tubes and rotate with them, causing the rollers to heat up rapidly. Because steel idler rollers have high thermal conductivity, the heat is quickly conducted to the bearing housings at both ends of the rollers, causing frequent seizures of the internal bearings due to thermal expansion. Such failures not only affect the continuous and stable operation of the equipment and increase the frequency of downtime for maintenance, but also pose significant safety risks to maintenance personnel during subsequent emergency repairs, such as burns from high temperatures or heatstroke due to harsh working conditions. Utility Model Content

[0004] The purpose of this utility model is to provide a roller device that can carry away the heat of the bearing housing, prevent the bearing from expanding and seizing, ensure the continuous and stable operation of steel pipe production, reduce the frequency of downtime maintenance, and eliminate safety hazards for maintenance personnel during emergency repairs.

[0005] The embodiments of this utility model are implemented as follows: An embodiment of this utility model provides a roller device, comprising: A heat dissipation structure, the heat dissipation structure including a support base and a first heat dissipation box and a second heat dissipation box spaced apart from the support base; A first bearing structure is disposed in the first heat sink; A second bearing structure is disposed in the second heat sink; and A roller structure, wherein both ends of the roller structure are respectively disposed on the first bearing structure and the second bearing structure; Both the first heat sink and the second heat sink are used to circulate coolant to dissipate heat from the first bearing structure and the second bearing structure.

[0006] In an optional embodiment, the first bearing structure includes a first active bearing housing and a first passive bearing housing, the first active bearing housing and the first passive bearing housing being spaced apart in the first heat sink; the second bearing structure includes a second active bearing housing and a second passive bearing housing, the second active bearing housing and the second passive bearing housing being spaced apart in the second heat sink. The idler structure includes an active idler and a passive idler that are connected to each other in a driving manner. The two ends of the active idler are disposed in the first active bearing seat and the second active bearing seat, and the two ends of the passive idler are disposed in the first passive bearing seat and the second passive bearing seat.

[0007] In an optional embodiment, the first heat sink and the second heat sink are spaced apart along a first direction, the first active bearing seat and the first passive bearing seat are spaced apart along a second direction, and the second active bearing seat and the second passive bearing seat are spaced apart along the second direction; the first active bearing seat, the first passive bearing seat, the second active bearing seat or the second passive bearing seat and the support seat are spaced apart along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0008] In an optional embodiment, the idler roller device further includes a first baffle and a second baffle, the first baffle and the second baffle being spaced apart in the first heat dissipation box along the second direction; the first baffle and the top of the first heat dissipation box being spaced apart along the third direction and extending toward the first active bearing seat; the second baffle and the top of the first heat dissipation box being spaced apart along the third direction and extending toward the first passive bearing seat.

[0009] In an optional embodiment, the idler roller device further includes a third baffle and a fourth baffle, the third baffle and the fourth baffle being spaced apart in the second heat dissipation box along the second direction; the third baffle and the top of the second heat dissipation box being spaced apart along the third direction and extending toward the second active bearing seat; the fourth baffle and the top of the second heat dissipation box being spaced apart along the third direction and extending toward the second passive bearing seat.

[0010] In an optional embodiment, the first active bearing housing includes a first bearing base and a first pressure cap, the first pressure cap being detachably connected to the first bearing base, and a first bearing hole being formed between the first pressure cap and the first bearing base; the second active bearing housing includes a second bearing base and a second pressure cap, the second pressure cap being detachably connected to the second bearing base, and a second bearing hole being formed between the second pressure cap and the second bearing base. The two ends of the active roller are respectively located in the first bearing hole and the second bearing hole.

[0011] In an optional embodiment, the first passive bearing housing includes a third bearing base and a third pressure cover, the third pressure cover being detachably connected to the third bearing base, and a third bearing hole being formed between the third pressure cover and the third bearing base; the second passive bearing housing includes a fourth bearing base and a fourth pressure cover, the fourth pressure cover being detachably connected to the fourth bearing base, and a fourth bearing hole being formed between the fourth pressure cover and the fourth bearing base. The passive roller has its two ends respectively located in the third bearing hole and the fourth bearing hole.

[0012] In an optional embodiment, the first heat dissipation box includes a first top plate and a first side plate, a second side plate, a third side plate, and a fourth side plate, all connected to the first top plate. The first side plate, the second side plate, the third side plate, and the fourth side plate are connected end to end in sequence and are all disposed on the support base. A first heat dissipation cavity is formed between the first top plate, the first side plate, the second side plate, the third side plate, the fourth side plate, and the support base. The first bearing structure is disposed on the first top plate.

[0013] In an optional embodiment, the second heat dissipation box includes a second top plate and a fifth side plate, a sixth side plate, a seventh side plate, and an eighth side plate, all connected to the second top plate. The fifth side plate, the sixth side plate, the seventh side plate, and the eighth side plate are connected end to end in sequence and are all disposed on the support base. A second heat dissipation cavity is formed between the second top plate, the fifth side plate, the sixth side plate, the seventh side plate, the eighth side plate, and the support base. The second bearing structure is disposed on the second top plate.

[0014] In an optional embodiment, the first heat sink is provided with a first liquid inlet connector and a first liquid outlet connector on opposite sides; and / or, The second heat sink has a second liquid inlet connector and a second liquid outlet connector on opposite sides.

[0015] The beneficial effects of this utility model embodiment include: In this embodiment, the idler roller device allows for the connection of an external coolant supply to the first and second heat dissipation boxes during actual production. This allows circulating coolant to flow into the heat dissipation boxes. The heat transferred from the idler roller structure to the first and second bearing structures is dissipated through the coolant in the first and second heat dissipation boxes, respectively. The circulating coolant carries away heat from the bearing housings, preventing bearing expansion and seizure. This ensures continuous and stable operation of steel pipe production, reduces downtime for maintenance, and eliminates safety hazards for maintenance personnel during emergency repairs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A first-view structural schematic diagram of the idler roller device provided in an embodiment of this utility model; Figure 2 A second-view structural schematic diagram of the idler roller device provided in an embodiment of this utility model; Figure 3 for Figure 1 Sectional view of section AA in the image; Figure 4 for Figure 2 Sectional view of section BB in the image.

[0018] Icons: 100-Idler roller device; 10-Heat dissipation structure; 11-Support seat; 12-First heat dissipation box; 121-First top plate; 122-First side plate; 123-Second side plate; 124-Third side plate; 125-Fourth side plate; 126-First heat dissipation cavity; 127-First liquid inlet connector; 128-First liquid outlet connector; 13-Second heat dissipation box; 131-Second top plate; 132-Fifth side plate; 133-Sixth side plate; 134-Seventh side plate; 136-Second heat dissipation cavity; 137-Second liquid inlet connector; 138-Second liquid outlet connector; 20 - First bearing structure; 21- First active bearing seat; 211- First bearing base; 212- First pressure cap; 213- First bearing hole; 22- First passive bearing seat; 221- Third bearing base; 222- Third pressure cap; 223- Third bearing hole; 30- Second bearing structure; 31- Second active bearing seat; 32- Second passive bearing seat; 321- Fourth bearing base; 322- Fourth pressure cap; 323- Fourth bearing hole; 40- Idler roller structure; 41- Active idler roller; 42- Passive idler roller; 51- First baffle; 52- Second baffle. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] As described in the background section, in actual production, the temperature of the tubes output from the piercing machine is extremely high. When the tubes pass through the borax blasting process, the idler rollers directly bear the high-temperature tubes and rotate with them, causing the idler rollers to heat up rapidly. Due to the high thermal conductivity of steel idler rollers, the heat is quickly conducted to the bearing seats at both ends of the idler rollers, causing the internal bearings to frequently seize due to thermal expansion. Such failures not only affect the continuous and stable operation of the equipment and increase the frequency of downtime for maintenance, but also pose significant safety risks to maintenance personnel during subsequent emergency repairs, such as burns from high temperatures or heatstroke due to harsh working conditions.

[0026] Based on this, please refer to Figures 1-4 The present invention provides a roller device 100, which can effectively improve the technical problems mentioned above. That is, it can remove the heat from the bearing housing, avoid the phenomenon of bearing expansion and jamming, ensure the continuous and stable operation of steel pipe production, reduce the frequency of downtime maintenance, and eliminate the safety hazards of maintenance personnel during emergency repairs.

[0027] It should be noted that the first direction mentioned below refers to... Figures 1-4The X direction is shown in the figure, and the second direction is... Figures 1-4 The Y direction shown in the figure, the third direction is Figures 1-4 The Z direction is shown in the figure. The roller device 100 will be described in detail below.

[0028] Please refer to Figure 1 and Figure 2 , Figure 1 This is a first-view structural schematic diagram of the idler roller device 100 provided in this embodiment. Figure 2 This is a structural schematic diagram of the idler roller device 100 provided in this embodiment from a second perspective. (Combined with...) Figure 1 and Figure 2 The idler roller device 100 includes a heat dissipation structure 10, a first bearing structure 20, a second bearing structure 30, and an idler roller structure 40. The heat dissipation structure 10 includes a support base 11, a first heat dissipation box 12, and a second heat dissipation box 13, which are spaced apart from each other on the support base 11. The first bearing structure 20 is disposed on the first heat dissipation box 12, and the second bearing structure 30 is disposed on the second heat dissipation box 13. Both ends of the idler roller structure 40 are respectively disposed on the first bearing structure 20 and the second bearing structure 30. Both the first heat dissipation box 12 and the second heat dissipation box 13 are used to circulate coolant to dissipate heat from the first bearing structure 20 and the second bearing structure 30.

[0029] Understandably, in actual production, the first heat sink 12 and the second heat sink 13 can be connected to an external coolant supply device, thereby allowing circulating coolant to flow into the heat sink. In this way, the heat conducted through the roller structure 40 to the first bearing structure 20 and the second bearing structure 30 can be dissipated through the coolant in the first heat sink 12 and the second heat sink 13, respectively. The circulating flow of the coolant carries away the heat from the bearing housing, thus preventing the bearing from expanding and seizing, ensuring the continuous and stable operation of steel pipe production, reducing the frequency of downtime for maintenance, and eliminating safety hazards for maintenance personnel during emergency repairs.

[0030] It should be noted that in this embodiment, the coolant is specifically circulating water; of course, in other embodiments, other types of coolant may also be selected.

[0031] Please continue to combine Figure 1 and Figure 2Specifically, the first bearing structure 20 includes a first active bearing housing 21 and a first passive bearing housing 22, which are spaced apart in the first heat sink 12. The second bearing structure 30 includes a second active bearing housing 31 and a second passive bearing housing 32, which are spaced apart in the second heat sink 13. The idler roller structure 40 includes an active idler roller 41 and a passive idler roller 42 that are connected to each other. The two ends of the active idler roller 41 are located in the first active bearing housing 21 and the second active bearing housing 31, and the two ends of the passive idler roller 42 are located in the first passive bearing housing 22 and the second passive bearing housing 32.

[0032] As is easily understood, the active idler roller 41 and the passive idler roller 42 are used to jointly support the high-temperature capillary tube. The drive device is used to drive the active idler roller 41 to rotate, thereby driving the passive idler roller 42 to rotate, and thus causing the capillary tube to rotate. By setting the first active bearing housing 21 and the first passive bearing housing 22 on the first heat dissipation box 12, and setting the second active bearing housing 31 and the second passive bearing housing 32 on the second heat dissipation box 13, the heat dissipation box can simultaneously dissipate the heat transferred from the active idler roller 41 and the passive idler roller 42, avoiding the phenomenon of expansion and jamming of the active and passive bearings, ensuring the normal and stable operation of the active idler roller 41 and the passive idler roller 42, thereby reducing the frequency of downtime maintenance and eliminating safety hazards for maintenance personnel during emergency repairs.

[0033] Furthermore, in this embodiment, the first heat sink 12 and the second heat sink 13 are spaced apart along a first direction, the first active bearing seat 21 and the first passive bearing seat 22 are spaced apart along a second direction, and the second active bearing seat 31 and the second passive bearing seat 32 are spaced apart along a second direction; the first active bearing seat 21, the first passive bearing seat 22, the second active bearing seat 31 or the second passive bearing seat 32 and the support base 11 are spaced apart along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0034] By designing the specific locations described above, the layout of the heat dissipation box, bearing seat, and idler rollers on the support base 11 can be optimized, improving the overall structural compactness of the idler roller device 100 and ensuring the heat dissipation effect and the operational stability of the idler roller structure 40.

[0035] Combination Figure 1Specifically, the first active bearing housing 21 includes a first bearing base 211 and a first pressure cover 212. The first pressure cover 212 is detachably connected to the first bearing base 211, and a first bearing hole 213 is formed between the first pressure cover 212 and the first bearing base 211. The second active bearing housing 31 includes a second bearing base and a second pressure cover (not shown in the figure). The second pressure cover is detachably connected to the second bearing base, and a second bearing hole is formed between the second pressure cover and the second bearing base. The two ends of the active idler roller 41 are respectively located in the first bearing hole 213 and the second bearing hole.

[0036] With the detachable connection between the first pressure cover 212 and the first bearing base 211, and the detachable connection between the second pressure cover and the second bearing base, when it is necessary to replace or repair the bearing of the active idler roller 41, it is only necessary to remove the first pressure cover 212 and the second pressure cover, and then lift the active idler roller 41 out separately for replacement or repair. There is no need to disassemble the entire idler roller device 100. Maintenance is convenient, time-saving and labor-saving, which can further improve maintenance efficiency and reduce maintenance costs.

[0037] Please refer to Figure 3 , Figure 3 for Figure 1 Sectional view of section AA in the figure, combined with Figures 1-3 Similarly, to facilitate maintenance or replacement of the passive idler roller 42, in this embodiment, the first passive bearing housing 22 includes a third bearing base 221 and a third pressure cover 222. The third pressure cover 222 is detachably connected to the third bearing base 221, and a third bearing hole 223 is formed between the third pressure cover 222 and the third bearing base 221. The second passive bearing housing 32 includes a fourth bearing base 321 and a fourth pressure cover 322. The fourth pressure cover 322 is detachably connected to the fourth bearing base 321, and a fourth bearing hole 323 is formed between the fourth pressure cover 322 and the fourth bearing base 321. The two ends of the passive idler roller 42 are respectively located in the third bearing hole 223 and the fourth bearing hole 323.

[0038] It should be noted that, specifically in this embodiment, the first bearing base 211, the first pressure cover 212, the second bearing base, the second pressure cover, the third bearing base 221, the third pressure cover 222, the fourth bearing base 321, and the fourth pressure cover 322 are all semi-sectional structures. This facilitates disassembly and installation, while also improving the versatility and adaptability of the components, thereby further improving disassembly and assembly efficiency and reducing manufacturing costs.

[0039] In addition, it should be noted that in this embodiment, the bearing base and the pressure cap are specifically connected by bolts; of course, in other embodiments, the bearing base and the pressure cap can also be connected by other detachable methods such as snap-fit, plug-in or magnetic connection.

[0040] Please refer to Figure 4 , Figure 4 for Figure 2 The BB section sectional view in the middle, combined with Figures 1-4 The idler roller device 100 also includes a first baffle 51 and a second baffle 52. The first baffle 51 and the second baffle 52 are spaced apart in the first heat dissipation box 12 along a second direction. The top of the first baffle 51 and the first heat dissipation box 12 are spaced apart along a third direction and extend toward the first active bearing seat 21. The second baffle 52 and the top of the first heat dissipation box 12 are spaced apart along a third direction and extend toward the first passive bearing seat 22.

[0041] It should be noted that, Figure 4 The direction of the dashed arrow shown indicates the flow direction of the coolant within the first radiator 12. For example... Figure 4 As shown, by setting the first baffle 51 and the second baffle 52, the coolant can only pass through the gap between the first baffle 51 and the first active bearing housing 21, and through the gap between the second baffle 52 and the first passive bearing housing 22 during the flow process; that is, the coolant flows close to the bottom of the bearing housing, which can further improve the heat dissipation effect and ensure that the bearing temperature in the bearing housing is within the appropriate process temperature range.

[0042] Similarly, in order to improve the heat dissipation effect of the second active bearing seat 31 and the second passive bearing seat 32, in this embodiment, the idler roller device 100 also includes a third baffle and a fourth baffle (not shown in the figure). The third baffle and the fourth baffle are spaced apart in the second heat dissipation box 13 along the second direction. The top of the third baffle and the second heat dissipation box 13 are spaced apart in the third direction and extend toward the second active bearing seat 31. The top of the fourth baffle and the second heat dissipation box 13 are spaced apart in the third direction and extend toward the second passive bearing seat 32.

[0043] Please continue to combine Figure 3 and Figure 4 Specifically, the first heat dissipation box 12 includes a first top plate 121 and a first side plate 122, a second side plate 123, a third side plate 124, and a fourth side plate 125, all connected to the first top plate 121. The first side plate 122, the second side plate 123, the third side plate 124, and the fourth side plate 125 are connected end to end in sequence and are all disposed on the support base 11. A first heat dissipation cavity 126 is formed between the first top plate 121, the first side plate 122, the second side plate 123, the third side plate 124, the fourth side plate 125, and the support base 11. A first bearing structure 20 is disposed on the first top plate 121.

[0044] Specifically, in this embodiment, the first bearing base 211 and the third bearing base 221 are spaced apart on the first top plate 121, and the first baffle 51 and the second baffle 52 are located in the first heat dissipation cavity 126.

[0045] Similarly, the second heat sink 13 includes a second top plate 131 and a fifth side plate 132, a sixth side plate 133, a seventh side plate 134, and an eighth side plate (not shown) all connected to the second top plate 131. The fifth side plate 132, the sixth side plate 133, the seventh side plate 134, and the eighth side plate are connected end to end in sequence and are all mounted on the support base 11. A second heat dissipation cavity 136 is formed between the second top plate 131, the fifth side plate 132, the sixth side plate 133, the seventh side plate 134, the eighth side plate, and the support base 11. The second bearing structure 30 is mounted on the second top plate 131.

[0046] Specifically, in this embodiment, the second bearing base and the fourth bearing base 321 are spaced apart on the second top plate 131, and the third baffle and the fourth baffle are located in the second heat dissipation cavity 136.

[0047] In addition, to facilitate the connection of an external coolant supply device, the first heat sink 12 is provided with a first inlet connector 127 and a first outlet connector 128 on opposite sides, and the second heat sink 13 is provided with a second inlet connector 137 and a second outlet connector 138 on opposite sides.

[0048] Specifically, in this embodiment, the first liquid inlet connector 127 is disposed on the second side plate 123, the first liquid outlet connector 128 is disposed on the fourth side plate 125, the second liquid inlet connector 137 is disposed on the sixth side plate 133, and the second liquid outlet connector 138 is disposed on the eighth side plate.

[0049] By setting the first liquid inlet connector 127 opposite to the first liquid outlet connector 128, and setting the second liquid inlet connector 137 opposite to the second liquid outlet connector 138, the flow path of the coolant in the heat sink can be extended, better conduct heat to the bearing housing, and further improve the heat dissipation efficiency.

[0050] In summary, the embodiments of this utility model provide a roller device 100, which includes a heat dissipation structure 10, a first bearing structure 20, a second bearing structure 30, and a roller structure 40. The heat dissipation structure 10 includes a support base 11, a first heat dissipation box 12, and a second heat dissipation box 13, which are spaced apart from each other on the support base 11. The first bearing structure 20 is disposed on the first heat dissipation box 12, and the second bearing structure 30 is disposed on the second heat dissipation box 13. The two ends of the roller structure 40 are respectively disposed on the first bearing structure 20 and the second bearing structure 30. Both the first heat dissipation box 12 and the second heat dissipation box 13 are used to circulate coolant to dissipate heat from the first bearing structure 20 and the second bearing structure 30. In actual production, the first heat dissipation box 12 and the second heat dissipation box 13 can be connected to an external coolant supply device to circulate coolant into the heat dissipation box. In this way, the heat conducted through the roller structure 40 to the first bearing structure 20 and the second bearing structure 30 can be dissipated through the coolant in the first heat dissipation box 12 and the second heat dissipation box 13 respectively. The heat of the bearing seat is carried away by the circulation of the coolant, thereby avoiding the phenomenon of bearing expansion and seizure, ensuring the continuous and stable operation of steel pipe production, reducing the frequency of downtime maintenance, and eliminating safety hazards for maintenance personnel during emergency repairs.

[0051] The above description is merely a specific embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A roller device, characterized in that, include: The heat dissipation structure (10) includes a support base (11) and a first heat dissipation box (12) and a second heat dissipation box (13) spaced apart from the support base (11). The first bearing structure (20) is disposed in the first heat sink (12); The second bearing structure (30) is disposed in the second heat sink (13); and The roller structure (40) has two ends respectively disposed on the first bearing structure (20) and the second bearing structure (30). The first heat sink (12) and the second heat sink (13) are both used to introduce coolant to dissipate heat from the first bearing structure (20) and the second bearing structure (30).

2. The idler roller device according to claim 1, characterized in that, The first bearing structure (20) includes a first active bearing housing (21) and a first passive bearing housing (22), which are spaced apart in the first heat sink (12); the second bearing structure (30) includes a second active bearing housing (31) and a second passive bearing housing (32), which are spaced apart in the second heat sink (13); The idler structure (40) includes an active idler (41) and a passive idler (42) that are connected to each other. The two ends of the active idler (41) are disposed in the first active bearing seat (21) and the second active bearing seat (31), and the two ends of the passive idler (42) are disposed in the first passive bearing seat (22) and the second passive bearing seat (32).

3. The idler roller device according to claim 2, characterized in that, The first heat sink (12) and the second heat sink (13) are spaced apart along a first direction, the first active bearing seat (21) and the first passive bearing seat (22) are spaced apart along a second direction, and the second active bearing seat (31) and the second passive bearing seat (32) are spaced apart along the second direction; the first active bearing seat (21), the first passive bearing seat (22), the second active bearing seat (31) or the second passive bearing seat (32) and the support seat (11) are spaced apart along a third direction; The first direction, the second direction, and the third direction are perpendicular to each other.

4. The idler roller device according to claim 3, characterized in that, The idler roller device (100) further includes a first baffle (51) and a second baffle (52). The first baffle (51) and the second baffle (52) are spaced apart in the first heat sink (12) along the second direction. The top of the first baffle (51) and the first heat sink (12) are spaced apart along the third direction and extend toward the first active bearing seat (21). The top of the second baffle (52) and the first heat sink (12) are spaced apart along the third direction and extend toward the first passive bearing seat (22).

5. The idler roller device according to claim 3, characterized in that, The idler roller device (100) further includes a third baffle and a fourth baffle. The third baffle and the fourth baffle are spaced apart in the second heat dissipation box (13) along the second direction. The top of the third baffle and the second heat dissipation box (13) are spaced apart along the third direction and extend toward the second active bearing seat (31). The top of the fourth baffle and the second heat dissipation box (13) are spaced apart along the third direction and extend toward the second passive bearing seat (32).

6. The idler roller device according to claim 2, characterized in that, The first active bearing housing (21) includes a first bearing base (211) and a first pressure cap (212). The first pressure cap (212) is detachably connected to the first bearing base (211), and a first bearing hole (213) is formed between the first pressure cap (212) and the first bearing base (211). The second active bearing housing (31) includes a second bearing base and a second pressure cap. The second pressure cap is detachably connected to the second bearing base, and a second bearing hole is formed between the second pressure cap and the second bearing base. The active roller (41) is located at both ends in the first bearing hole (213) and the second bearing hole, respectively.

7. The idler roller device according to claim 2, characterized in that, The first passive bearing housing (22) includes a third bearing base (221) and a third pressure cap (222), the third pressure cap (222) being detachably connected to the third bearing base (221), and a third bearing hole (223) being formed between the third pressure cap (222) and the third bearing base (221); the second passive bearing housing (32) includes a fourth bearing base (321) and a fourth pressure cap (322), the fourth pressure cap (322) being detachably connected to the fourth bearing base (321), and a fourth bearing hole (323) being formed between the fourth pressure cap (322) and the fourth bearing base (321); The passive roller (42) is located at both ends in the third bearing hole (223) and the fourth bearing hole (323).

8. The idler roller device according to claim 1, characterized in that, The first heat sink (12) includes a first top plate (121) and a first side plate (122), a second side plate (123), a third side plate (124) and a fourth side plate (125) all connected to the first top plate (121). The first side plate (122), the second side plate (123), the third side plate (124) and the fourth side plate (125) are connected end to end in sequence and are all disposed on the support base (11). A first heat dissipation cavity (126) is formed between the first top plate (121), the first side plate (122), the second side plate (123), the third side plate (124), the fourth side plate (125) and the support base (11). The first bearing structure (20) is disposed on the first top plate (121).

9. The idler roller device according to claim 1, characterized in that, The second heat sink (13) includes a second top plate (131) and a fifth side plate (132), a sixth side plate (133), a seventh side plate (134) and an eighth side plate, all connected to the second top plate (131). The fifth side plate (132), the sixth side plate (133), the seventh side plate (134) and the eighth side plate are connected end to end in sequence and are all disposed on the support base (11). A second heat sink cavity (136) is formed between the second top plate (131), the fifth side plate (132), the sixth side plate (133), the seventh side plate (134), the eighth side plate and the support base (11). The second bearing structure (30) is disposed on the second top plate (131).

10. The idler roller device according to claim 1, characterized in that, The first heat sink (12) is provided with a first liquid inlet connector (127) and a first liquid outlet connector (128) on opposite sides; and / or, The second heat sink (13) is provided with a second liquid inlet connector (137) and a second liquid outlet connector (138) on opposite sides.

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