Drive wheel and transport device

Abstract

A drive wheel and a transport device are provided. The transport device comprises a body and a drive wheel rotatably connected to the body about a central axis, wherein the drive wheel comprises a wheel shell comprising a first side positioned opposite the body and a second side facing the body in the direction of the central axis, and at least one cooling channel through between the first side and the second side in the wheel shell.

Description

Technical Field

[0001] Some aspects of embodiments of this disclosure relate to drive wheels and transport equipment including drive wheels. Background Technology

[0002] The production of display panels, semiconductors, and other components can be carried out within cleanrooms. Transport equipment can be used within cleanrooms to move materials. This transport equipment can move display panels and wafers during the production process. Additionally, transport equipment can transport items used in the production of display panels, semiconductors, and other components.

[0003] Tires may age as they are used in transportation equipment. Additionally, tires can experience partial contraction and expansion due to load. This partial contraction and expansion causes heat to be generated within the tire. This heating phenomenon can accelerate tire aging and increase the amount of particulate matter generated from the tire.

[0004] The information disclosed in this Background section is only intended to enhance the understanding of the background, and therefore the information discussed in this Background section need not constitute prior art. Utility Model Content

[0005] Some aspects of embodiments of this disclosure include drive wheels with effective cooling and transport equipment including drive wheels.

[0006] The transport device according to some embodiments includes: a body; and a drive wheel rotatably connected to the body about a central axis, wherein the drive wheel may include a wheel housing, the wheel housing may include a first side positioned opposite to the body along the central axis direction and a second side facing the body, and at least one cooling channel extending through the first side and the second side may be in the wheel housing.

[0007] According to some embodiments, the cooling channel may be tilted relative to a direction parallel to the central axis.

[0008] According to some embodiments, the cooling channel may be tilted in the direction of rotation of the wheel housing while moving backward from the first side toward the second side.

[0009] According to some embodiments, cooling channels may be provided in multiple forms and arranged in a circumferential direction centered on a central axis.

[0010] According to some embodiments, the first side may include: a fastening portion disposed in an inner region in a radial direction centered on a central axis; and a protruding portion disposed in an outer region in a radial direction centered on a central axis, and the protruding portion may protrude more than the fastening portion in the opposite direction of the second side.

[0011] According to some embodiments, one end of the cooling channel may be positioned in the fastening portion.

[0012] According to some embodiments, the drive wheel may also include a heat dissipation module that is connected to the wheel housing and increases the contact area with the air.

[0013] According to some embodiments, the heat dissipation module may include: a cooling plate having an annular structure; and at least one auxiliary cooling plate having an annular structure and connected to the cooling plate.

[0014] According to some embodiments, at least one connecting hole may be present on the cooling plate, and the connecting hole is aligned with one end of the cooling channel.

[0015] According to some embodiments, at least one auxiliary connecting hole aligned with the connecting hole may be in an auxiliary cooling plate.

[0016] According to some embodiments, the transport equipment may also include a connecting portion that connects the cooling plate and the auxiliary cooling plate.

[0017] According to some embodiments, multiple connecting holes may be provided, and the connecting portion may be in a segment between multiple connecting holes.

[0018] According to some embodiments, the heat dissipation module may include: a cooling plate having an annular structure and having at least one through hole aligned with one end of a cooling channel; and a guide portion adjacent to the through hole and protruding outward from one surface of the cooling plate.

[0019] According to some embodiments, when the circumferential direction is reversed, the guide portion may be adjacent to the connecting hole on one side of the wheel housing in the direction of rotation.

[0020] According to some embodiments, the heat dissipation module may also include an auxiliary cooling plate having an annular structure and connected to the guide portion.

[0021] According to some embodiments, the drive wheel includes a wheel housing, wherein the wheel housing may include a first side and a second side at opposite ends along a central axis direction, and cooling channels extending through the first side and the second side may be in the wheel housing.

[0022] According to some embodiments, the cooling channel may be tilted relative to a direction parallel to the central axis.

[0023] According to some embodiments, the drive wheel may also include a heat dissipation module connected to a first side of the wheel housing and increasing the contact area with air.

[0024] According to some embodiments, the heat dissipation module may include: a cooling plate having an annular structure and having at least one through hole aligned with one end of a cooling channel; and at least one auxiliary cooling plate having an annular structure and connected to the cooling plate.

[0025] According to some embodiments, the heat dissipation module may include: a cooling plate having an annular structure and having at least one through hole aligned with one end of a cooling channel; and a guide portion adjacent to the through hole and protruding outward from one surface of the cooling plate.

[0026] According to some embodiments, it is possible to provide drive wheels capable of performing effective cooling and a transport device including drive wheels. Attached Figure Description

[0027] Figure 1 A transport device according to some embodiments is shown.

[0028] Figure 2 It shows Figure 1 The drive wheel.

[0029] Figure 3 The heat dissipation module is shown to be located from... Figure 2 The drive wheels are removed.

[0030] Figure 4 It shows Figure 2 The wheel housing.

[0031] Figure 5 It is a diagram that projects the cooling channels and fastening grooves located in the cross-section of the wheel housing onto a plane.

[0032] Figure 6 and Figure 7 It is a diagram showing the airflow formed around the wheel housing and in the cooling channels when the transport equipment is driven.

[0033] Figure 8 It shows Figure 2 The heat dissipation module.

[0034] Figure 9 and Figure 10 This is an enlarged view of some areas of the heat dissipation module.

[0035] Figure 11 A heat dissipation module according to some embodiments is shown.

[0036] Figure 12 yes Figure 11 Enlarged view of some areas of the heat dissipation module.

[0037] Figure 13 A drive wheel according to some embodiments is shown. Detailed Implementation

[0038] In the following, various embodiments of the present disclosure are described in detail with reference to the accompanying drawings, enabling those skilled in the art to readily practice the present disclosure. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein.

[0039] The accompanying drawings and descriptions are intended to be illustrative rather than restrictive in nature, and similar reference numerals designate similar elements throughout the specification.

[0040] For ease of description, the dimensions and thicknesses of each element are arbitrarily illustrated in the accompanying drawings, and this disclosure is not necessarily limited to what is illustrated in the drawings. In the drawings, the thicknesses of layers, films, panels, areas, etc., are enlarged for clarity. Additionally, in the drawings, the thicknesses of some layers and areas are enlarged for better understanding and ease of description.

[0041] It will be understood that when an element, such as a layer, film, region, or substrate, is referred to as being "on" another element, that element can be directly on the other element, or an intervening element may also be present. Conversely, when an element is referred to as being "directly on" another element, no intervening element is present. Furthermore, throughout the specification, the phrase "on" the target element will be understood as being positioned above or below the target element, and will not necessarily be understood as being positioned "on the upper side" based on a direction opposite to the direction of gravity.

[0042] Furthermore, unless otherwise expressly stated otherwise, the wording “comprise” and variations such as “comprises” or “comprising” will be understood to imply inclusion of the stated element, but not to exclude any other element.

[0043] Additionally, throughout the instruction manual, the phrase "on a plane" means viewing the target portion from the top, and the phrase "on a cross-section" means viewing a cross-section formed by vertically cutting the target portion from the side.

[0044] Figure 1 A transport device 1 according to some embodiments is shown.

[0045] refer to Figure 1 According to some embodiments, the transport device 1 may include a body 10 and drive wheels 20.

[0046] The transport equipment 1 can be used to transport goods. The transport equipment 1 can be used to transport goods in a cleanroom where equipment for producing display panels, semiconductors, etc., is positioned. The goods transported by the transport equipment 1 can be goods used in the production process of display panels, semiconductors, etc., display panels undergoing production, wafers undergoing production, etc. For example, the transport equipment 1 can be located on a track L installed inside the cleanroom and is provided to move along the track L.

[0047] The body 10 may have a volume (e.g., a set or predetermined volume). Furthermore, the body 10 may have a structure for loading goods to be transported. For example, the body 10 may have a loading space on one side for loading goods. Additionally, the body 10 may have at least some areas with a lifting structure. Furthermore, the body 10 may include accessory parts for loading or unloading goods. Furthermore, the body 10 may also include a configuration for providing power for driving. The configuration for providing power for driving may be a motor, etc.

[0048] Drive wheels 20 are connected to the body 10. Drive wheels 20 may be located at opposite ends of the body 10 in the width direction. For example, two drive wheels 20 may be located on two sides of the body 10 in the width direction, such that four drive wheels 20 may be connected to the body 10. A cover 15 may be located in the upper region of the drive wheels 20. The cover 15 may be connected to the body 10. The cover 15 may be located at a certain distance (e.g., a set or predetermined distance) from the drive wheels 20. The cover 15 may block the upward flow of air around the drive wheels 20. Therefore, the cover 15 may prevent or reduce the diffusion of particles, etc., caused by the rising airflow generated around the drive wheels 20 during the operation of the transport device 1.

[0049] Figure 2 It shows Figure 1 Drive wheel 20, Figure 3 The heat dissipation module 240 is shown to be located from... Figure 2 The drive wheel 20 is removed, and Figure 4 It shows Figure 2 Wheel housing 200.

[0050] refer to Figures 2 to 4 According to some embodiments, the drive wheel 20 may include a wheel housing 200, a tire 220, and a heat dissipation module 240.

[0051] Wheel housing 200 provides a frame for drive wheel 20. Wheel housing 200 is rotatably connected to body 10 about a central axis CL. For example, the central axis CL may be oriented in the width direction of body 10.

[0052] Wheel housing 200 may have a length (e.g., a set or predetermined length) along the central axis CL. The outer surface 201 of wheel housing 200 may be provided in a circular shape along a circumferential direction centered on the central axis CL. Therefore, wheel housing 200 may have a cylindrical structure with a length (e.g., a set or predetermined length) along the central axis CL. Wheel housing 200 may have a perforation 202 positioned in an internal central region along the central axis CL. Therefore, wheel housing 200 may have a tubular structure with a length (e.g., a set or predetermined length) along the central axis CL and a thickness (e.g., a set or predetermined thickness) between the outer surface 201 and the inner surface 203 in a radial direction relative to the central axis CL. Wheel housing 200 may be rotatably connected to body 10 about the central axis CL via the perforation 202. The inner surface 203 of wheel housing 200 facing the perforation 202 may be provided in a circular shape along a circumferential direction centered on the central axis CL.

[0053] The wheel housing 200 includes a first side 204 and a second side 207 located at each end along the central axis CL. It is understood that the first side 204 and the second side 207 are located between the outer surface 201 and the inner surface 203. When the wheel housing 200 is connected to the body 10, the first side 204 may be arranged in the opposite direction to the body 10 along the central axis CL. When the wheel housing 200 is connected to the body 10, the second side 207 may be positioned in the direction toward the body 10 along the central axis CL.

[0054] At least one cooling channel 210 may be located in the wheel housing 200. The cooling channel 210 may be arranged to pass between the first side 204 and the second side 207. Thus, one end of the cooling channel 210 may be connected to the outside on the first side 204, and the other end of the cooling channel 210 may be connected to the outside on the second side 207. Multiple cooling channels 210 may be provided and spaced apart from each other in a circumferential direction centered on the central axis CL. In this case, multiple distances between two adjacent cooling channels 210 in the circumferential direction centered on the central axis CL may correspond to each other. Furthermore, the distance between two adjacent cooling channels 210 in the circumferential direction centered on the central axis CL may be different for each segment. The cross-section of the cooling channel 210 in a direction perpendicular to the central axis CL may have a circular shape, an elliptical shape, a polygonal shape, etc. Furthermore, the cooling channel 210 may have a structure in which both ends in the circumferential direction centered on the central axis CL are rounded. The wheel housing 200 can be effectively cooled by the air flowing through the cooling channels 210.

[0055] At least one fastening groove 211 may be located in the wheel housing 200. The fastening groove 211 is provided to extend to a certain depth (e.g., a set or predetermined depth) in a direction from the first side 204 to the second side 207. The fastening grooves 211 may be provided as a plurality of grooves spaced apart from each other in a circumferential direction centered on the central axis CL. For example, at least one fastening groove 211 may be located between two cooling channels 210 that are adjacent to each other in a circumferential direction centered on the central axis CL. Furthermore, at least one fastening groove 211 may be located in some of a plurality of sections between two cooling channels 210 that are adjacent to each other in a circumferential direction centered on the central axis CL, and there may be no fastening groove 211 in the remaining sections. Figure 3 and Figure 4 The illustration shows a fastening groove 211 positioned between two adjacent cooling channels 210 along a circumferential direction centered on the central axis CL.

[0056] The first side 204 may include a fastening portion 205 and a protruding portion 206. The fastening portion 205 may be located in an inner region of the first side 204 in a radial direction centered on the central axis CL. The protruding portion 206 may be located in an outer region of the first side 204 in a radial direction centered on the central axis CL. The protruding portion 206 may be arranged to protrude from the fastening portion 205 in the opposite direction along the central axis CL to the second side 207 by a receiving depth dh. Furthermore, it is understood that the fastening portion 205 may be recessed by a receiving depth dh in the direction toward the second side 207 compared to the protruding portion 206 (see [link to relevant documentation]). Figure 5 That is, the protrusion 206 may be a rib structure that protrudes from the outer periphery of the fastening portion 205 in the opposite direction to the second side 207, receiving a depth dh. The width of the fastening portion 205 in the radial direction centered on the central axis CL may be provided to be greater than the width of the protrusion 206. One end of the cooling channel 210 (i.e., the fastening groove 211) may be located on the fastening portion 205.

[0057] Figure 5 It is a diagram that projects the cooling channel 210 and fastening groove 211 located in the cross section of the wheel housing 200 onto a plane.

[0058] refer to Figure 5 The length direction of the cooling channel 210 may be tilted at an angle (e.g., a set or predetermined angle) α relative to the direction parallel to the central axis CL. In this case, the length direction of the cooling channel 210 may be the direction from one end of the cooling channel 210 located on the first side 204 to the other end of the cooling channel 210 located on the second side 207. The angle α of the tilt of the length direction of the cooling channel 210 relative to the direction parallel to the central axis CL may be an acute angle. Furthermore, multiple angles α of tilt of multiple cooling channels 210 relative to the direction parallel to the central axis CL may correspond to each other.

[0059] The length of the fastening groove 211 can be oriented in a direction parallel to the central axis CL. The inner end of the fastening groove 211 is spaced apart from the cooling channel 210, and thus the fastening groove 211 and the cooling channel 210 can be provided separately from each other.

[0060] Figure 6 and Figure 7 It is a diagram showing the flow of air formed around the wheel housing 200 and in the cooling channel 210 when the transport device 1 is driven.

[0061] refer to Figure 6 and Figure 7 When the transport device 1 is driven, airflow is formed around the drive wheel 20 and inside the cooling channel 210. That is, as... Figure 6 As shown, when the drive wheel 20 rotates in one direction, an airflow from the first side 204 toward the second side 207 can be formed in the cooling channel 210. In this case, in the area adjacent to the first side 204, the direction of the airflow around the wheel housing 200 can be oriented in the inclined direction of the cooling channel 210 as it travels from the first side 204 to the second side 207. Therefore, air in the area adjacent to the first side 204 can effectively enter the cooling channel 210. In this disclosure, airflow can be synonymous with air flow, airflow, and air movement.

[0062] In addition, such as Figure 7 As shown, when the drive wheel 20 rotates in different directions, airflow can be formed in the cooling channel 210 in the direction from the second side 207 toward the first side 204. In this case, in the area adjacent to the second side 207, the direction of the airflow around the wheel housing 200 can be oriented toward an inclined direction as the cooling channel 210 travels from the second side 207 toward the first side 204. Therefore, air in the area adjacent to the second side 207 can effectively enter the cooling channel 210.

[0063] For example, Figure 6 The direction of rotation when the drive wheel 20 is rotating in the forward direction and the direction of airflow forming around the drive wheel 20 can be shown. Additionally, Figure 7 The direction of rotation when the drive wheel 20 is rotating in the opposite direction and the direction of airflow formed around the drive wheel 20 can be shown. The direction of rotation when the drive wheel 20 is rotating in the forward direction can be the same as the direction of rotation when the transport device 1 moves forward (FW). In addition, the direction of rotation when the drive wheel 20 is rotating in the opposite direction can be the same as the direction of rotation when the transport device 1 moves backward (BW).

[0064] The transport device 1 can have a longer forward FW operation time during its use than the backward BW operation time. Furthermore, due to the interference between the body 10 and the air, the cooling efficiency due to airflow is higher when the airflow direction inside the cooling channel 210 moves from the first side 204 to the second side 207. Therefore, when the transport device 1 moves forward FW, the length direction of the cooling channel 210 can be inclined in the opposite direction of the rotation direction of the wheel housing 200 (i.e., opposite to the forward rotation direction) as it travels from the first side 204 to the second side 207. In other words, when the transport device 1 moves backward BW, the length direction of the cooling channel 210 can be inclined in the rotation direction of the wheel housing 200 (i.e., the reverse rotation direction) as it travels from the first side 204 to the second side 207.

[0065] Tire 220 may be located on the outer periphery of wheel housing 200. The material of tire 220 may include synthetic rubber, etc. For example, the material of tire 220 may include polyurethane, etc.

[0066] A heat dissipation module 240 is connected to the wheel housing 200 to increase the contact area with air. The heat dissipation module 240 can be fixed to a first side 204 of the wheel housing 200. For example, the heat dissipation module 240 can be secured to a fastening member (…). Figure 8 The fastening component 245) is fixed to the first side 204 of the wheel housing 200. The fastening component can be a bolt, a locating pin, etc.

[0067] Figure 8 It shows Figure 2 The heat dissipation module 240, and Figure 9 and Figure 10 This is an enlarged view of some areas of the heat dissipation module 240.

[0068] refer to Figures 8 to 10 According to some embodiments, the heat dissipation module 240 may include a cooling plate 2400 and an auxiliary cooling plate 2410.

[0069] The cooling plate 2400 can be connected to the first side 204 of the wheel housing 200. For example, the cooling plate 2400 can be fastened to the first side 204 of the wheel housing 200 by a fastening member 245. The cooling plate 2400 can be provided as an annular structure. The cooling plate 2400 can be provided as an annular structure having a width (e.g., a set or predetermined width) in the radial direction. The cooling plate 2400 can have a shape corresponding to the first side 204. The cooling plate 2400 can have a shape corresponding to the fastening portion 205 of the first side 204. That is, the width of the cooling plate 2400 in the radial direction can correspond to the width of the fastening portion 205 in the radial direction. In addition, the outer periphery of the cooling plate 2400 can correspond to the outer periphery of the fastening portion 205. Therefore, the cooling plate 2400 can be connected to the wheel housing 200 as a structure positioned at the fastening portion 205. The thickness of the cooling plate 2400 can correspond to the receiving depth dh.

[0070] At least one connecting hole 2401 may be located in the cooling plate 2400. The connecting hole 2401 may be arranged to extend through both sides of the cooling plate 2400 in a direction parallel to the central axis CL. Multiple connecting holes 2401 may be provided and spaced apart from each other in a circumferential direction centered on the central axis CL. In this case, multiple distances between two adjacent connecting holes 2401 in the circumferential direction centered on the central axis CL may correspond to each other. Furthermore, the distance between two adjacent connecting holes 2401 in the circumferential direction centered on the central axis CL may be different for each segment. The connecting hole 2401 may be arranged to correspond to one end of the cooling channel 210 located on the first side 204. The connecting hole 2401 may have a circular shape, an elliptical shape, a polygonal shape, etc. Furthermore, the connecting hole 2401 may have a rounded corner structure at both ends in the circumferential direction centered on the central axis CL. The shape of the connecting hole 2401 may correspond to the shape of the cross-section of the cooling channel 210. When the heat dissipation module 240 is connected to the wheel housing 200, the connecting hole 2401 can be aligned with one end of the cooling channel 210 located on the first side 204.

[0071] Cooling plate 2400 may be connected to at least one auxiliary cooling plate 2410. Auxiliary cooling plate 2410 may be provided as an annular structure. Auxiliary cooling plate 2410 may be provided as an annular structure having a width (e.g., a set or predetermined width) in the radial direction. Auxiliary cooling plate 2410 may have a shape corresponding to cooling plate 2400.

[0072] The auxiliary cooling plate 2410 can be connected to the cooling plate 2400 via the connecting portion 2430. Furthermore, when two or more auxiliary cooling plates 2410 are provided, each auxiliary cooling plate 2410 can be connected to another auxiliary cooling plate 2410 via the connecting portion 2430. The connecting portion 2430 can extend from the cooling plate 2400 in the opposite direction to the wheel housing 200. For example, the connecting portion 2430 can extend in a direction parallel to the length direction of the central axis CL. The surfaces of the cooling plate 2400 and the auxiliary cooling plate 2410 facing each other via the connecting portion 2430 can be spaced apart by a certain distance (e.g., a set or predetermined distance) along the length direction of the central axis CL.

[0073] The connecting portions 2430 may be provided in multiples and spaced apart from each other in a circumferential direction centered on the central axis CL. For example, at least one connecting portion 2430 may be located between two adjacent connecting holes 2401 in a circumferential direction centered on the central axis CL. Furthermore, in a circumferential direction centered on the central axis CL, at least one connecting portion 2430 may be located in a portion of a section between two adjacent connecting holes 2401, while the remaining portion may not have a connecting portion 2430. Figures 8 to 10 The illustration shows a connection portion 2430 positioned between two adjacent connecting holes 2401 along a circumferential direction centered on the central axis CL.

[0074] At least one auxiliary connecting hole 2411 may be located in the auxiliary cooling plate 2410. The auxiliary connecting hole 2411 may be arranged to extend through two sides of the auxiliary cooling plate 2410 in a direction parallel to the central axis CL. Multiple auxiliary connecting holes 2411 may be provided and spaced apart from each other in a circumferential direction centered on the central axis CL. In this case, multiple distances between two adjacent auxiliary connecting holes 2411 in the circumferential direction centered on the central axis CL may correspond to each other. Furthermore, the distance between two adjacent auxiliary connecting holes 2411 in the circumferential direction centered on the central axis CL may be different for each segment. The auxiliary connecting hole 2411 may be arranged to correspond to the connecting hole 2401 located in the cooling plate 2400. Therefore, the auxiliary connecting hole 2411 may be aligned with the connecting hole 2401 in a direction parallel to the central axis CL. The auxiliary connecting hole 2411 may have a circular shape, an elliptical shape, a polygonal shape, etc. Furthermore, the auxiliary connecting hole 2411 may have a rounded corner structure at both ends in the circumferential direction centered on the central axis CL. The shape of the auxiliary connecting hole 2411 can correspond to the shape of the connecting hole 2401.

[0075] Fastening holes 2431 may be located in the cooling plate 2400. Fastening holes 2431 may be arranged to penetrate two sides of the cooling plate 2400 in a direction parallel to the central axis CL. Multiple fastening holes 2431 may be provided and spaced apart from each other in a circumferential direction centered on the central axis CL. Fastening holes 2431 may be arranged to correspond to fastening grooves 211 positioned on the first side 204 of the wheel housing 200. Therefore, the heat dissipation module 240 may be fixed to the wheel housing 200 as a structure in which fastening holes 2431 and fastening grooves 211 are aligned and fastening members 245 are inserted into the fastening holes 2431 and fastening grooves 211. For example, fastening holes 2431 may be located in the area where a connecting portion 2430 is positioned. Therefore, fastening holes 2431 may be arranged to penetrate the internal central area of ​​the connecting portion 2430, the cooling plate 2400, and the auxiliary cooling plate 2410 in a direction parallel to the central axis CL. The area of ​​the fastening hole 2431 on the cooling plate 2400 in a direction perpendicular to the central axis CL can be smaller than the area of ​​the fastening hole 2431 on the auxiliary cooling plate 2410 and the connecting portion 2430. Therefore, the fastening step 2432 protruding toward the inner central area can be located at the inner end of the fastening hole 2431 facing the wheel housing 200.

[0076] According to some embodiments, the transport device 1 allows the drive wheel 20 to be effectively cooled during use. Specifically, during use, a load is applied to the drive wheel 20 of the transport device 1. This load causes partial contraction and expansion of the tire 220. The tire 220 generates heat during the contraction and expansion process. The heat generated by the tire 220 causes changes in the physical properties of the tire 220, thereby reducing the life of the tire 220 and causing particles to be generated from the tire 220. On the other hand, according to some embodiments, the transport device 1 effectively cools the tire 220 and the wheel housing 200 by means of a cooling channel 210 positioned in the wheel housing 200. That is, the heat generated in the tire 220 is transferred to the wheel housing 200, and the wheel housing 200 can be effectively cooled by air flowing through the cooling channel 210.

[0077] Furthermore, according to some embodiments, the transport device 1 can more effectively cool the wheel housing 200 by means of a heat dissipation module 240 connected to the wheel housing 200. In this case, the heat dissipation module 240 has a structure that increases the contact area with air while allowing air to flow effectively between the cooling channel 210 of the wheel housing 200 and the outside, thereby achieving more efficient cooling.

[0078] Figure 11 A heat dissipation module 250 according to some embodiments is shown, and Figure 12 yes Figure 11 Enlarged view of some areas of the heat dissipation module 250.

[0079] refer to Figure 11 and Figure 12 According to some embodiments, the heat dissipation module 250 may include a cooling plate 2500 and an auxiliary cooling plate 2600.

[0080] The cooling plate 2500 can be connected to the first side 204 of the wheel housing 200. For example, the cooling plate 2500 can be fastened to the first side 204 of the wheel housing 200 by a fastening member 255, which can be a bolt, a locating pin, etc.

[0081] The cooling plate 2500 may be provided as an annular structure. The cooling plate 2500 may be provided as an annular structure having a width (e.g., a set or predetermined width) in the radial direction. The cooling plate 2500 may have a shape corresponding to the first side 204. The cooling plate 2500 may have a shape corresponding to the fastening portion 205 of the first side 204. That is, the width of the cooling plate 2500 in the radial direction may correspond to the width of the fastening portion 205 in the radial direction. Additionally, the outer periphery of the cooling plate 2500 may correspond to the outer periphery of the fastening portion 205. Therefore, the cooling plate 2500 may be coupled to the wheel housing 200 as a structure positioned at the fastening portion 205.

[0082] The thickness of the cooling plate 2500 corresponds to the containment depth dh.

[0083] At least one connecting hole 2501 may be located in the cooling plate 2500. The connecting hole 2501 may be arranged to penetrate two sides of the cooling plate 2500 in a direction parallel to the central axis CL.

[0084] Multiple connecting holes 2501 can be provided and spaced apart from each other in a circumferential direction centered on the central axis CL. In this case, multiple distances between two adjacent connecting holes 2501 in the circumferential direction centered on the central axis CL can correspond to each other. Furthermore, the distance between two adjacent connecting holes 2501 in the circumferential direction centered on the central axis CL can be different for each segment. The connecting holes 2501 can be arranged to correspond to one end of the cooling channel 210 located on the first side 204. The connecting holes 2501 can have a circular shape, an elliptical shape, a polygonal shape, etc. Additionally, the connecting holes 2501 can have a rounded corner structure at both ends in the circumferential direction centered on the central axis CL. The shape of the connecting holes 2501 can correspond to the shape of the cross-section of the cooling channel 210. When the heat dissipation module 250 is connected to the wheel housing 200, the connecting holes 2501 can be aligned with one end of the cooling channel 210.

[0085] Fastening holes 2502 can be arranged in the cooling plate 2500. The fastening holes 2502 can be arranged to penetrate two sides of the cooling plate 2500 in a direction parallel to the central axis CL. Multiple fastening holes 2502 can be provided and spaced apart from each other in a circumferential direction centered on the central axis CL. The fastening holes 2502 can be arranged to correspond to fastening grooves 211 positioned on the first side 204 of the wheel housing 200. Therefore, the heat dissipation module 250 can be fixed to the wheel housing 200 as a structure in which the fastening holes 2502 and the fastening grooves 211 are aligned and fastening members 255 are inserted into the fastening holes 2502 and the fastening grooves 211.

[0086] A guide portion 2520 may be located within the cooling plate 2500. The guide portion 2520 is provided to protrude outward from one side of the cooling plate 2500. The guide portion 2520 is positioned adjacent to the connecting hole 2501 such that the airflow generated when the drive wheel 20 rotates is directed towards the connecting hole 2501 and the cooling channel 210. The guide portion 2520 may be positioned on one side of the connecting hole 2501 with reference to a circumferential direction centered on the central axis CL. When the transport device 1 moves forward FW, based on the circumferential direction centered on the central axis CL, the guide portion 2520 may be positioned adjacent to the connecting hole 2501 on a side opposite to the rotation direction of the wheel housing 200 (i.e., in the opposite direction of forward rotation). In other words, based on the circumferential direction centered on the central axis CL, when the transport device 1 moves backward BW, the guide portion 2520 may be positioned adjacent to the connecting hole 2501 on a side opposite to the rotation direction of the wheel housing 200 (i.e., in the opposite direction of rotation). Therefore, the airflow generated when the drive wheel 20 rotates forward can be guided by the inner surface of the guide portion 2520 facing the connecting hole 2501, and then directed towards the connecting hole 2501.

[0087] The boot section 2520 may include a main boot section 2521, an inner boot section 2522, and an outer boot section 2523.

[0088] The main guide portion 2521 is arranged around one end of the connecting hole 2501 in a circumferential direction centered on the central axis CL. The main guide portion 2521 may extend a certain distance (e.g., a set or predetermined distance) in a radial direction centered on the central axis CL. The main guide portion 2521 may tilt to face the connecting hole 2501 as it moves away from the cooling plate 2500.

[0089] The inner guide portion 2522 is connected to the inner end of the main guide portion 2521 in the radial direction. The inner guide portion 2522 is positioned adjacent to the inner end of the connecting hole 2501 in the radial direction. The inner guide portion 2522 may have a length (e.g., a set or predetermined length) in a circumferential direction centered on the central axis CL. The length of the inner guide portion 2522 in the circumferential direction centered on the central axis CL may be provided to be less than the length of the connecting hole 2501 in the circumferential direction centered on the central axis CL.

[0090] The outer guide portion 2523 is connected to the outer end of the main guide portion 2521 in the radial direction. The outer guide portion 2523 is positioned adjacent to the outer end of the connecting hole 2501 in the radial direction. The outer guide portion 2523 may have a length (e.g., a set or predetermined length) in a circumferential direction centered on the central axis CL. The length of the outer guide portion 2523 in the circumferential direction centered on the central axis CL may be provided to be less than the length of the connecting hole 2501 in the circumferential direction centered on the central axis CL. The length of the outer guide portion 2523 in the circumferential direction centered on the central axis CL may be provided to be longer than the length of the inner guide portion 2522 in the circumferential direction centered on the central axis CL.

[0091] The auxiliary cooling plate 2600 can be connected to the guide portion 2520. Therefore, the guide portion 2520 can be a connecting portion connecting the auxiliary cooling plate 2600 and the cooling plate 2500. The auxiliary cooling plate 2600 is located at a certain distance (e.g., a set or predetermined distance) from the cooling plate 2500 along a direction parallel to the central axis CL. The auxiliary cooling plate 2600 may include an outer auxiliary cooling plate 2601 and an inner auxiliary cooling plate 2602.

[0092] The external auxiliary cooling plate 2601 may be provided as an annular structure. The external auxiliary cooling plate 2601 may be provided as an annular structure having a width (e.g., a set or predetermined width) in the radial direction. The width of the external auxiliary cooling plate 2601 in the radial direction may be less than the width of the cooling plate 2500 in the radial direction. The external auxiliary cooling plate 2601 may be arranged facing the outer region of the cooling plate 2500 in a radial direction centered on the central axis CL. The external auxiliary cooling plate 2601 may be connected to the external guide portion 2523.

[0093] The inner auxiliary cooling plate 2602 may be provided as an annular structure. The inner auxiliary cooling plate 2602 may be provided as an annular structure having a width (e.g., a set or predetermined width) in the radial direction. The width of the inner auxiliary cooling plate 2602 in the radial direction may be provided to be less than the width of the cooling plate 2500 in the radial direction. The inner auxiliary cooling plate 2602 may be arranged facing the inner region of the cooling plate 2500 in the radial direction centered on the central axis CL. The inner auxiliary cooling plate 2602 may be connected to the inner guide portion 2522. The inner auxiliary cooling plate 2602 may be spaced apart from the outer auxiliary cooling plate 2601 in the radial direction.

[0094] According to some embodiments, the heat dissipation module 250 allows air to effectively enter the cooling channel 210 of the wheel housing 200 through the guide portion 2520.

[0095] In addition, according to some embodiments, the heat dissipation module 250 can improve heat dissipation efficiency by increasing the contact area with air through the auxiliary cooling plate 2600.

[0096] Additionally, according to some embodiments, the heat dissipation module 250 can prevent or reduce the direct collision between the guide portion 2520 and workers or external objects through the auxiliary cooling plate 2600.

[0097] Figure 13 A drive wheel 20a according to some embodiments is shown.

[0098] refer to Figure 13 According to some embodiments, the drive wheel 20a may include a wheel housing 200a, a tire 220a, and a heat dissipation module 240a.

[0099] The heat dissipation module 240a may include a first heat dissipation module 241a and a second heat dissipation module 242a.

[0100] The first heat dissipation module 241a can be connected to the first side of the wheel housing 200a. That is, the first heat dissipation module 241a can be arranged in the opposite direction to the body 10 relative to the wheel housing 200a. The first heat dissipation module 241a is the same as the one mentioned above. Figures 8 to 10 The heat dissipation module described is 240 or the above reference. Figure 11 and Figure 12 The heat dissipation module 250 described is the same as or similar to that described above, and some repetitive explanations thereof may be omitted.

[0101] The second heat dissipation module 242a can be connected to the second side of the wheel housing 200a. That is, the second heat dissipation module 242a can be arranged to face the body 10. The second heat dissipation module 242a is the same as the one mentioned above. Figures 8 to 10 The heat dissipation module 240 described herein is the same as or similar to that described above, and some repetitive descriptions may be omitted. Additionally, the second heat dissipation module 242a may have the same characteristics as described above. Figure 11 and Figure 12 The described heat dissipation module 250 has a similar structure. In this case, taking the circumferential direction centered on the central axis CL as a reference, when the transport device 1 moves backward BW, the guide portion 2520 can be arranged adjacent to the connecting hole 2501 on one side in the opposite direction of the rotation direction of the wheel housing 200a (i.e., the opposite direction of the reverse rotation). Therefore, the airflow generated when the drive wheel 20a rotates in the opposite direction can be guided by the inner surface of the guide portion 2520 facing the connecting hole 2501, and then directed towards the connecting hole 2501.

[0102] Wheel housing 200a and tire 220a are the same as the above reference. Figures 1 to 7 The descriptions are identical or similar in structure, and therefore some repetitive descriptions can be omitted.

[0103] While aspects of some embodiments of this disclosure have been described in conjunction with what are now considered practical embodiments, it is to be understood that embodiments according to this disclosure are not limited to the disclosed embodiments. Rather, this disclosure is intended to cover various modifications and equivalent arrangements, as well as equivalents thereof, that are included within the spirit and scope of the appended claims.

Claims

1. A transportation device, characterized in that, include: ontology; as well as A drive wheel, rotatably connected to the body about a central axis. The drive wheel includes a wheel housing. The wheel housing includes a first side positioned opposite to the body along the central axis and a second side facing the body, and At least one cooling channel runs through the wheel housing between the first side and the second side.

2. The transportation equipment according to claim 1, characterized in that, The cooling channel is inclined relative to a direction parallel to the central axis.

3. The transportation equipment according to claim 1, characterized in that, The cooling channels are provided in multiple ways, and the multiple cooling channels are arranged in a circumferential direction centered on the central axis.

4. The transportation equipment according to claim 1, characterized in that, The first side includes: The fastening portion is located in an inner region in the radial direction centered on the central axis; and The protruding portion is located in the outer region in the radial direction centered on the central axis, and The protruding portion protrudes more than the fastening portion in the opposite direction on the second side.

5. The transportation equipment according to claim 1, characterized in that, The drive wheel also includes a heat dissipation module, which is connected to the wheel housing.

6. The transportation equipment according to claim 5, characterized in that, The heat dissipation module includes: Cooling plate, the cooling plate having an annular structure; and At least one auxiliary cooling plate, the at least one auxiliary cooling plate having an annular structure and being connected to the cooling plate.

7. The transportation equipment according to claim 5, characterized in that, The heat dissipation module includes: A cooling plate having an annular structure and having at least one through hole aligned with one end of the cooling channel; and The guide portion is adjacent to the connecting hole and protrudes outward from one surface of the cooling plate.

8. A drive wheel, characterized in that, Including wheel housings, The wheel housing includes a first side and a second side respectively arranged at opposite ends along the central axis direction, and Cooling channels running through the first and second sides are located in the wheel housing.

9. The drive wheel according to claim 8, characterized in that, The cooling channel is inclined relative to a direction parallel to the central axis.

10. The drive wheel according to claim 8, characterized in that, It also includes a heat dissipation module, which is connected to the first side of the wheel housing.

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