Crown block track roller and track thereof

Abstract

The invention discloses crown block rail rollers and a guide rail thereof. A rail comprises a plurality of crown block rail rollers, a connecting seat connected with the crown block rail rollers, and a rail assembly providing rolling guide for the crown block rail rollers. Wherein the track assembly is provided with a guide groove, and the annular part of the track roller is inserted into the guide groove. According to the crown block rail roller and the rail thereof, the special-shaped roller composed of the roller body and the annular part on the roller body is adopted so as to be matched with the guide groove of the rail assembly, the roller body and the rail assembly enable the roller to automatically reset and to be always kept in the middle in the running process, sliding friction between a hanging plate and the guide groove of the rail is avoided, and the service life of the hanging plate is prolonged. The friction loss of the track and the hanger plate is reduced, the operation noise of the locomotive is reduced, the energy consumption is reduced, and the riding experience of a user is improved.

Description

Technical Field

[0001] This invention relates to the field of suspended rail transit equipment technology, and more particularly to a crane track roller and its track. Background Technology

[0002] Suspended aerial rail transit, due to its ability to effectively utilize low-altitude space, has become a transportation option for densely populated cities. Compared to traditional ground and underground transportation, it has lower construction and operating costs and is widely used in various scenarios such as urban commuter trunk lines, tourism, airport connections, and industrial logistics.

[0003] One of the factors hindering the development of suspended rail transit is its limited load capacity and stringent operational reliability requirements, making it unsuitable for high-volume passenger transport scenarios. Therefore, existing technologies have developed various types of small elevated rail vehicles for short-distance or small-scale transportation.

[0004] To reduce construction and operating costs and improve the reliability of aerial trams, existing technologies often employ small monorail-suspended aerial trams. The tram achieves stable operation through the cooperation of rollers and rails. However, the rollers of the tram may wobble during operation and are prone to colliding with the rails. This not only affects the user's riding experience but also damages the equipment and reduces its service life. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a crane track roller and its track to solve the technical problem that the existing crane track rollers and tracks are prone to collision.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, embodiments of the present invention provide a crane track roller, comprising: a roller body, wherein the roller body has a through shaft connection hole at its axial center, and the outer rolling surface of the roller body has a radially protruding annular portion at its center.

[0007] The junction between the annular portion and the outer rolling surface of the roller body is chamfered.

[0008] The shaft connection hole has mounting grooves recessed at both ends, and bearings coaxial with the shaft connection hole are installed in the mounting grooves.

[0009] Secondly, embodiments of the present invention provide a track, the track including a plurality of overhead crane track rollers as described in any of the above, a connecting seat for connecting the overhead crane track rollers, and a track assembly for providing rolling guidance for the overhead crane track rollers, wherein the plurality of overhead crane track rollers are linearly distributed on the connecting seat.

[0010] The track assembly is provided with a guide groove, and the annular portion is inserted into the guide groove. When the crane track roller rolls relative to the track assembly, the annular portion is always at least partially inserted into the inside of the guide groove.

[0011] Wherein, the axial width of the annular portion is L1, the groove width of the guide groove is L2, and the ratio of L1 / L2 ranges from 0.4 to 1.

[0012] The track assembly includes a first guide rail and a second guide rail arranged parallel to the first guide rail. A predetermined width gap is reserved between the first guide rail and the second guide rail, and the gap forms the guide groove. The top of both the first guide rail and the second guide rail is provided with a support surface.

[0013] The top corners of the opposite sides of the first and second guide rails are arc-shaped chamfers, which correspond to the chamfer structure.

[0014] Wherein, the chamfer of the chamfer structure is R1, the chamfer of the arc chamfer is R2, and the ratio of R2 / R1 ranges from 0.4 to 1.

[0015] The connecting seat has an installation cavity, and the bottom of the installation cavity has an opening for the crane track roller to protrude. The crane track roller is rotatably connected to the connecting seat via a rotating shaft, and several hanging plates are also fixedly connected to the connecting seat. The hanging plates pass through the gaps and protrude from the bottom of the track assembly.

[0016] The overhead crane track roller and its track of the present invention adopt a special-shaped roller composed of a roller body and an annular part on it, so as to cooperate with the guide groove of the track assembly. During the operation of the roller body and the track assembly, the roller group always keeps the wheel set automatically centered, avoiding sliding friction between the hanging plate and the track guide groove, reducing friction loss between the track and the hanging plate, reducing the operating noise of the locomotive, saving energy consumption, and thus improving the user riding experience.

[0017] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are described in detail below. Attached Figure Description

[0018] Figure 1 and Figure 2 These are schematic diagrams of the overall structure of the track from different perspectives in an embodiment of the present invention.

[0019] Figure 3 This is a side view of the track according to an embodiment of the present invention.

[0020] Figure 4 This is a front view of the track according to an embodiment of the present invention.

[0021] Figure 5 This is an exploded view of the track according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the assembly state of the overhead crane track rollers, connecting seats, and hanging plates in an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the track component structure of the track according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the connecting seat portion of the track according to an embodiment of the present invention.

[0025] Figure 9 This is an exploded view of the overhead crane track rollers according to an embodiment of the present invention.

[0026] Figure 10 for Figure 3 The diagram shows a magnified view of part A.

[0027] Explanation of reference numerals in the attached figures: Track 100, connecting seat 1, mounting cavity 10, bottom 12, opening 121, inner side 11, shaft connection hole 111, crane track roller 2, outer rolling surface 20, roller body 21, annular part 22, shaft connection hole 23, mounting groove 24, bearing 25, chamfer structure 201, hanging plate 3, track assembly 4, support surface 40, first guide rail 41, second guide rail 42, guide groove 43, arc chamfer 401, connecting plate 5. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral molding; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Suspended rail transit, due to its ability to effectively utilize low-altitude space, has become a new transportation option for large and medium-sized densely populated cities. Compared to traditional ground and underground transportation, its construction and operating costs are lower, and it is widely used in various scenarios such as urban commuter trunk lines, tourism, airport connections, and industrial logistics. One factor hindering the development of suspended rail transit is its limited load capacity and stringent reliability requirements, making it unsuitable for high-volume passenger transport scenarios. Therefore, existing technologies have developed various sizes of small suspended rail vehicles for short-distance or small-scale transportation scenarios.

[0036] To reduce construction and operating costs and improve the reliability of aerial trams, existing technologies often employ small monorail-suspended aerial trams. These trams achieve stable operation through the cooperation of rollers and a track. However, the rollers are prone to collisions with the track due to swaying during operation. This collision noise affects the user experience, and the friction damage caused by the collision reduces the equipment's lifespan. To address these issues, this embodiment discloses a track 100 for aerial trams.

[0037] Please see Figures 1 to 10 This embodiment provides a track 100 for a suspended overhead crane. The track 100 includes a plurality of crane track rollers 2, a connecting seat 1 for connecting the crane track rollers 2, and a track assembly 4 for providing rolling guidance for the crane track rollers 2. The plurality of crane track rollers 2 are linearly arranged and connected to a connecting seat 1. In this embodiment, the number of crane track rollers 2 is greater than or equal to 2 sets.

[0038] In this embodiment, the track assembly 4 provides track guidance for the movement of the overhead crane track rollers 2, and also provides vertical suspension support for the overhead crane track rollers 2 and their connecting seats 1. The connecting seats 1 connect several overhead crane track rollers 2 to form a moving module, which is suspended on the track assembly 4 and can move along the track assembly 4. The power module drives the overhead crane track rollers 2 to rotate, thereby enabling the car suspended on the moving module to move in the air.

[0039] Please refer to it again. Figure 9 and Figure 10 The overhead crane track roller 2 includes: a roller body 21, wherein the roller body 21 has a through shaft connection hole 23 at its axial center, and the outer rolling surface 20 of the roller body 21 has a radially protruding annular portion 22 at its center.

[0040] Specifically, the roller body 21 has a cylindrical structure, and the annular portion 22 protrudes from the middle of the cylindrical sidewall along the diameter direction, thereby dividing the outer rolling surface 20 (cylindrical side surface) of the roller body 21 into left and right parts along its axial direction. The annular portion 22 is used to cooperate with the track assembly 4. During the rolling process of the roller body 21, the annular portion 22 is at least partially located inside the track assembly 4 to prevent the roller body 21 from deviating significantly from the track assembly 4 and colliding during the rolling process. That is, the annular portion 22 is used to guide the roller body 21 and other mechanisms connected to it to move forward stably along the guide path of the guide rail assembly 4. The left and right cylindrical side surfaces divided by the annular portion 22 abut against the support surface 40 of the track assembly 4, respectively. During the rotation of the roller body 21, it simultaneously bears the load of the connecting seat 1 and the car (including passengers) connected to it.

[0041] The track assembly 4 is provided with a guide groove 43 that mates with the annular portion 22. Two support surfaces 40 are provided on the outer side of the guide groove 43, supporting the outer rolling surface 20 of the roller body 21. The annular portion 22 is at least partially inserted into the guide groove 43. During rolling, the annular portion 22 remains at least partially within the guide groove 43, thus preventing the roller body 21 from swaying in a direction perpendicular to the rolling direction and causing collisions. Even if the car or other mechanisms are subjected to external forces and experience significant displacement, the structure of the annular portion 22 and the guide groove 43 allows for a rapid return to normal operation.

[0042] To avoid excessive contact between the two opposing annular surfaces of the annular portion 22 and the wall of the guide groove 43, the junction of the annular portion 22 and the outer rolling surface of the roller body 21 is chamfered 201. That is, the outer edge of the cross-section at the junction of the annular portion 22 and the roller body 21 is concave. This chamfered structure 201 improves the contact between the roller body 21 and the guide groove 43 to a line-to-surface contact, thereby reducing the contact area and friction. Simultaneously, the concave arc-shaped structure at the junction can quickly guide the roller body 21 back to its centered position after it wobbles and deviates from its central position.

[0043] Specifically, the arc-shaped surface structure at the junction of the annular part 22 and the cylindrical side of the roller body 21 cooperates with the roller body 21 so that when the roller body 21 shakes and jumps in the vertical direction and deviates from the center line, the concave arc-shaped structure between the two guides the roller body 21 to descend quickly and return to the middle position of the guide groove 43.

[0044] The shaft connection hole 23 has mounting grooves 24 recessed at both ends, and bearings 25 coaxial with the shaft connection hole 23 are installed in the mounting grooves 24. The rotating shaft (not shown in the figure) passes through the bearings 25 and the shaft connection hole 23 and is then connected to the connecting seat 1.

[0045] Please refer to it again. Figure 3 and Figure 7 The track assembly 4 includes a first guide rail 41 and a second guide rail 42 arranged parallel to the first guide rail 41. A predetermined width gap is reserved between the first guide rail 41 and the second guide rail 42, and the gap forms the guide groove 43. The top of both the first track 41 and the second track 42 is provided with a support surface 40. In this embodiment, both the first track 41 and the second track 42 adopt a square steel tube structure and are arranged parallel to each other. A predetermined width gap is reserved between them during assembly as the guide groove 43. The square steel tube is a standard structural component with simple existing process, low cost and high support strength. Using two standard square steel tubes can reduce processing costs and is conducive to mass production and large-scale application. The support surface 40 of the first guide rail 41 and the second guide rail 42 is a planar structure, and the top surfaces of the first guide rail 41 and the second guide rail 42 are set at the same height, and the top surfaces are respectively supported on the outer rolling surface 20 of the roller body 21.

[0046] Please combine Figure 10 The top corners of the opposite sides of the first guide rail 41 and the second guide rail 42 are arc-shaped chamfers 401, which correspond to the chamfer structure 201. Figure 10 From the perspective shown, the chamfer structure 201 is an arc-shaped structure recessed towards the shaft connection hole 23 of the roller body 21, while the arc-shaped chamfer 401 is an arc-shaped convex structure protruding towards the roller body 21. The contact surfaces of the two are arc-shaped structures that cooperate with each other, which can reduce the contact area, reduce collision noise and friction contact loss.

[0047] Tests have shown that when the axial width of the annular portion 22 is L1, the groove width of the guide groove 43 is L2, and the ratio of L1 / L2 is in the range of 0.4-1 (excluding the endpoint value), the guide groove 43 has the best guiding effect on the annular portion 22 and the operation stability is also higher.

[0048] In this embodiment, the chamfer of the chamfer structure 201 is R1, and the chamfer of the arc chamfer 401 is R2. When the ratio of R2 / R1 is in the range of 0.4-1 (excluding the endpoint value), the cooperation between the guide groove 43 and the annular part 22 is also better.

[0049] Please refer to it again. Figure 1 and Figure 8 The connecting seat 1 has a mounting cavity 10, and the bottom 12 of the mounting cavity 10 has an opening 121 for the crane track roller 2 to protrude. The crane track roller 2 is rotatably connected to the connecting seat 1 via a rotating shaft, and several hanging plates 3 are also fixedly connected to the connecting seat 1. The hanging plates 3 pass through the bottom of the track assembly 4 via the guide groove 43. In this embodiment, the side surfaces of the first track 41 and the second track 42 on opposite sides (such as the inner side surface 11 of the first guide rail 41) are both parallel planar structures, and the inner side surface 11 is also provided with a shaft connection hole 111 for connecting an external rotating shaft.

[0050] Similarly, due to the combined effect of the chamfered structure 201 and the arc-shaped chamfer 401, collisions between the hanging plate 3 and the sidewall of the guide groove 43 can also be prevented simultaneously. The axial width of the annular portion 22 is greater than the thickness of the hanging plate 3.

[0051] In this embodiment, the connecting seat 1 is a square steel tube structure with an opening 121 at its bottom 12. No more than half of the roller body 21 extends out of the opening 121, and the roller body extending out of the opening 121 abuts against the support surface 40 of the guide rail assembly 4.

[0052] Specifically, the lower end of the hanging plate 3 is fixedly connected to the car of the overhead crane, and the top end passes through the bottom 12 of the connecting seat 1 and is fixedly connected to the top of the connecting seat 1, so that a stable and reliable connection is formed between the hanging plate 3 and the connecting seat 1. Obviously, the hanging plate 3 is set in the middle of the bottom 12 of the connecting seat 1, so that the roller body 21 and the car connected through the hanging plate 3 are evenly suspended on the track assembly 4.

[0053] Please refer to it again. Figures 1 to 3 In this embodiment, the first track 41 and the second track 42 are connected and fixed by a connecting plate 5, which is also fixedly connected to the ground track support. The connecting plate 5 has an arched structure to form a space for the connecting seat 1 and the overhead crane track rollers 2 to pass through. Several overhead crane track rollers 2 are arranged linearly in a front-to-back sequence and are rotatably connected to the connecting seat 1. The connecting seat 1 is also provided with at least one hanging plate 3, the bottom end of which is connected to the car. The connecting seat 1 and the several overhead crane track rollers 2 on it are all located above the track assembly 4. The wheel surface of the roller body 21 is supported on the support surface of the track assembly 4. The hanging plate 3 is led out from the bottom through the gap between the parallel first guide rail 41 and the second guide rail 42.

[0054] The overhead crane track rollers and track 100 of this embodiment adopt a special-shaped roller composed of a roller body and an annular part on it, so as to cooperate with the guide groove of the track assembly. During operation, the roller body and the track assembly keep the wheel set automatically centered, avoiding sliding friction between the hanging plate 3 and the track guide groove, reducing friction loss between the track and the hanging plate, reducing locomotive operating noise, saving energy consumption, and thus improving the user riding experience. Even if shaking occurs, it can quickly and automatically reset to center, which is particularly suitable for the field of small aerial suspended trolleys.

[0055] The above examples are merely illustrative of the technical content of the present invention to facilitate easier understanding by the reader, but do not imply that the implementation of the present invention is limited to these examples. Any technical extensions or re-creations made based on the present invention are protected by the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A crane track roller, characterized in that, include: The roller body has a through shaft connection hole at its axial center and a radially protruding annular portion at the center of its outer rolling surface.

2. The overhead crane track roller according to claim 1, characterized in that, The junction between the annular portion and the outer rolling surface of the roller body is chamfered.

3. The overhead crane track roller according to claim 2, characterized in that, The two ends of the shaft connection hole are recessed with mounting grooves, and bearings coaxial with the shaft connection hole are installed in the mounting grooves.

4. A track, characterized in that, The track includes a plurality of overhead crane track rollers as described in any one of claims 2 to 3, a connecting seat for connecting the plurality of overhead crane track rollers, and a track assembly for providing rolling guidance for the overhead crane track rollers, wherein the plurality of overhead crane track rollers are linearly arranged and connected to the connecting seat.

5. The overhead crane track roller according to claim 4, characterized in that, The track assembly is provided with a guide groove, and the annular portion is inserted into the guide groove. When the overhead crane track roller rolls relative to the track assembly, the annular portion is always at least partially inserted into the guide groove.

6. The overhead crane track roller according to claim 5, characterized in that, The axial width of the annular portion is L1, the groove width of the guide groove is L2, and the ratio of L1 / L2 ranges from 0.4 to 1.

7. The overhead crane track roller according to claim 6, characterized in that, The track assembly includes: a first guide rail and a second guide rail arranged parallel to the first guide rail, with a predetermined width gap reserved between the first guide rail and the second guide rail, the gap forming the guide groove, and a support surface provided on the top of each of the first guide rail and the second guide rail.

8. The overhead crane track roller according to claim 7, characterized in that, The top corners of the opposite sides of the first guide rail and the second guide rail are arc-shaped chamfers, and the arc-shaped chamfers correspond to the chamfer structure.

9. The overhead crane track roller according to claim 8, characterized in that, The chamfer of the chamfer structure is R1, and the chamfer of the arc chamfer is R2. The ratio of R2 / R1 is in the range of 0.4-1.

10. The overhead crane track roller according to claim 5, characterized in that, The connecting seat has an installation cavity, and the bottom of the installation cavity has an opening for the crane track roller to protrude. The crane track roller is rotatably connected to the connecting seat via a rotating shaft, and several hanging plates are also fixedly connected to the connecting seat. The hanging plates pass through the bottom of the track assembly via the guide groove.

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