Streamline-shaped single-girder automatic rail-mounted gantry crane

Abstract

The streamline-shaped single-main-beam automatic rail-mounted gantry crane comprises a main beam, supporting legs and a trolley, and further comprises a main beam rail structure arranged on the main beam, the main beam rail structure comprises a mother plate, a web plate and a rail, and the mother plate is horizontally fixed to the main beam; the web is fixedly connected with the mother board and the main beam, and the track is arranged at the top of the web and provides a moving track for the trolley; and an obtuse angle is formed between the extension direction of the web plate towards the track and the extension direction of the mother plate towards the main beam. According to the streamline-shaped single-girder automatic rail-mounted gantry crane, the girder track structure with the inclined structure is adopted, the inclination range of the obtuse angle is wide, inclined webs with different angles can be designed according to different trolley track gauges and different girder sections, the girder track structure has good adaptability, and the adaptability is high. And the problem that a track or a wheel device is difficult to arrange due to too small space is solved.

Description

Technical Field

[0001] The invention relates to the field of rail cranes, and in particular to a single-main-beam automated rail crane structure. Background Art

[0002] High-speed automated non-cantilever rail crane is a key transport equipment in automated terminal yards, characterized by high speed and busy operation. The trolley track is generally supported by a vertical web. For some optimized main beam sections, interference areas between the main beam and the web and the track are likely to occur, affecting the implementation of the optimized main beam section. Summary of the invention

[0003] An object of the present invention is to provide a streamlined single-girder automated rail crane.

[0004] To achieve the above-mentioned purpose, a streamlined single-girder automated rail crane includes a main beam, legs and a trolley, and also includes a main beam track structure, which is arranged on the main beam. The main beam track structure includes a motherboard, a web and a track. The motherboard is horizontally fixed on the main beam; the web is fixedly connected to the motherboard and the main beam, and the track is arranged on the top of the web to provide a moving track for the trolley; wherein the extension direction of the web toward the track forms an obtuse angle with the extension direction of the motherboard toward the main beam.

[0005] In one or more embodiments, the obtuse angle α ranges from 90° to 110°.

[0006] In one or more embodiments, the leg includes a pair of flexible legs and a flexible hinge located at the top of the pair of flexible legs, the top spacing of the pair of flexible legs is smaller than the bottom spacing, and also includes a cross tube connecting the pair of flexible legs, and the cross tube is close to the flexible hinge.

[0007] In one or more embodiments, the flexible legs and the cross tube are round tubes.

[0008] In one or more embodiments, a pair of first ear plates are provided at the bottom of the main beam, and a pair of second ear plates are provided at the top of the flexible leg. The first ear plate and the second ear plate are connected by a pin shaft to form the flexible hinge.

[0009] In one or more embodiments, the connection section between the first ear plate and the main beam is designed as a box-type structure; a sleeve is provided inside the main beam, and the sleeve is connected to the inner wall of the main beam, wherein the connection area between the sleeve and the lower inner wall of the main beam is axially aligned with the box-type structure.

[0010] In one or more embodiments, longitudinal ribs are provided in the sleeve.

[0011] In one or more embodiments, the support legs include a pair of rigid support legs and an adapter located at the top of the rigid support legs, one end of the adapter is connected to the rigid support legs through a flange, and the other end of the adapter is welded to the outside of the main beam, the pair of adapters are arranged in parallel, and the top spacing of the pair of rigid support legs is smaller than the bottom spacing.

[0012] In one or more embodiments, a sleeve is provided inside the main beam, and the docking dimension between the sleeve and the lower surface of the main beam is aligned with the connection dimension between the adapter and the sleeve.

[0013] In one or more embodiments, the cross-section of the rigid leg is waist-shaped.

[0014] In one or more embodiments, longitudinal ribs and partitions are provided inside the main beam along the longitudinal direction.

[0015] The above-mentioned streamlined single-girder automated rail crane adopts a main beam track structure with an inclined structure. The obtuse angle inclination range is wider. According to different trolley gauges and different main beam optimization structures, it can be designed with inclined webs at different angles, so that the main beam track structure has better adaptability and will not cause the problem of difficulty in arranging the track or wheel device due to too small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0017] Figure 1 This is a basic structural diagram of a streamlined single-girder automated rail crane;

[0018] Figure 2 This is the basic structural side view of the streamlined single-girder automated rail crane;

[0019] Figure 3 It is a schematic diagram of the traditional web and rail connection structure;

[0020] Figure 4 is a schematic diagram of the interference region;

[0021] Figure 5 is a schematic diagram of an inclined web;

[0022] Figure 6 is a schematic diagram of the flexible leg;

[0023] Figure 7 It is an enlarged view of the flexible hinge;

[0024] Figures 8A-8B is along Figure 6 Cross-sections along AA and BB directions;

[0025] Fig. 9 is a schematic diagram of a rigid outrigger;

[0026] Figures 10A-10B is along Fig. 9 Cross-sectional view along CC and DD directions. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with specific embodiments and drawings. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description herein. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0028] It should be noted that these and other subsequent drawings are only examples and are not drawn to scale, and should not be used to limit the actual scope of protection required by the present invention.

[0029] like Figure 1 and Figure 2 As shown, the automated rail crane includes a gantry 1, a trolley travel mechanism 6, a car travel mechanism 7 and accessory components, including but not limited to structures such as an electrical room 10 and a high-voltage room 9. The main beam and the end beam form the gantry of the automated rail crane. The wheels of the trolley run on the tracks on both sides of the main beam, and the wire rope is led from the drum around the pulley at the end of the trolley frame and led downward from both sides of the main beam to the upper frame of the sling, combined with the movement of the lifting mechanism, to achieve precise positioning and lifting of the goods. The trolley travel mechanism enables the crane to move within the yard so as to lift containers at different locations. The stacking and grabbing functions of the yard containers are completed through the movement of the trolley, the trolley and the up and down movement of the sling.

[0030] Conventional automated rail cranes are mostly double-box girder structures, that is, they include two main beams with trolley tracks, and the trolley runs on the main beam tracks. The trolley tracks are generally supported by webs, such as Figure 3 As shown in the figure, the webs supporting the tracks on both sides of the cross section are arranged vertically. However, when the curvature of the arc of the main beam adjacent to the web changes during the design process, the clearance between the web and the arc will change when the track gauge is constant. The clearance should not be too small, otherwise there will be insufficient space on the cover plate to arrange the track, and it should not be too large, otherwise it will cause material waste and be unfavorable for the force of the track support plate. The factors of arc curvature, track gauge, and clearance constrain each other.

[0031] The curvature of the arc has a great influence on the wind resistance coefficient and the mechanical properties of the cross section. For example, for the problem of high wind resistance, a circular tube cross-section leg and an elliptical main beam track crane are generally used. The use of a circular tube cross-section main beam can effectively reduce wind resistance. For example, in Chinese patent CN208532046, its rigid legs are composed of circular tube legs and auxiliary support rods. In order to ensure the rigidity in the direction of the trolley, the upper part of the auxiliary support rod needs to be arranged to the outside of the gantry, which will increase the size of the whole machine on the outside of the rigid leg track. For docks where multiple machines are operated in parallel, such an arrangement sometimes cannot meet the clearance requirements between adjacent machines. Another example is the differential rail loading and unloading crane recorded in Chinese patent CN105384079, which uses a gantry rail crane with a circular tube cross-section truss main beam, but its circular tube truss structure also reduces wind resistance. Similarly, the legs of this type of machine are also composed of auxiliary support rods and main pipes. Under certain circumstances, there is also a problem that the outer width of the whole machine is increased, which is not conducive to meeting the clearance requirements of the dock during parallel operation.

[0032] Based on this, under the condition of optimized beam arc curvature, it is necessary to design a gantry main beam track structure that is compact but easy to arrange the track.

[0033] The gantry 1 includes a main beam 1, a flexible leg 3, a rigid leg 2, a lower cross beam 5 and other components. The flexible leg 3 is hinged to the first end of the main beam 1 through a flexible hinge 8, and the rigid leg 2 is fixedly connected to the second end of the main beam 1 by means such as welding. Figure 3 As shown, the main beam 1 has a streamlined outer contour, and a track 32 is laid on the main beam 1 for the operation of the trolley 7. In the traditional design structure, a small section of web 33 extends from the ends of both sides of the main beam, and a wing plate 34 is laid on the top of the web 33, and the wing plate 34 is extended to the side wall of the main beam 1 and welded. Figure 4 A schematic diagram is shown after the trolley gauge changes or the arc curvature of the main beam 1 changes. At this time, the wheel assembly 71 and the arc plate 12 of the main beam 1 produce an interference area P. Because the distance between the track center and the arc plate is too close, it is difficult to arrange the track or accommodate the wheel device.

[0034] Figure 5 The main beam track structure of the present disclosure is shown, and the main beam track structure includes a mother plate 16, a web plate 33 and a track 32. The mother plate 16 is horizontally fixed on the main beam 1. Further, the main beam 1 includes a spliced ​​upper cover plate 11, a lower cover plate 19 and an arc plate 12, and the mother plate 16 is horizontally arranged, extending into the interior of the main beam 1 and connected to the arc plate 12.

[0035] The web 33 is fixedly connected to the motherboard 16 and the main beam 1, and the track 32 is arranged on the top of the web 33 to provide a moving track for the trolley.

[0036] The extension direction of the web 33 toward the track 32 forms an obtuse angle α with the extension direction of the mother plate 16 toward the main beam 1, and the web 33 forms an acute angle θ with the vertical line perpendicular to the mother plate 16, θ+90°=α. After the web 33 is tilted, the clearance size between the center of the track and the arc plate 12 is no longer strictly limited by the height H1 of the track and the shape and size of the arc plate 12, such as the width W, inner diameter H, and wall thickness T2, and the design space of the position and size of the upper cover plate 11 and the lower cover plate 19 is also increased.

[0037] In some embodiments, the obtuse angle α ranges from 90 to 120°. Compared with the traditional vertical plate structure, the obtuse angle α has a wider inclination range. For different trolley gauges and different main beam optimized cross-sections, it can be designed as inclined webs with different angles, so that the main beam track structure has better adaptability and will not cause the problem of difficult arrangement of tracks or wheel devices due to too small space. The track can be a platen track or a welded track. When a welded track is used, the width of the wing plate can be appropriately reduced to save materials and costs.

[0038] The main beam is a single beam structure, which is welded into a streamlined outer contour by rolling or cutting the steel plate into the required sections. A transverse partition 17 is arranged inside the main beam to improve the torsional stability of the main beam. Longitudinal reinforcement 18 is arranged along the axial direction inside the main beam to improve the stability of the web and wing plate of the main beam.

[0039] Continue to refer to Figure 6 As shown, in some embodiments, the legs include a pair of flexible legs 3 and a flexible hinge located at the top of the pair of flexible legs 3. Specifically, a horizontal flange plate 33 is welded on the top of the flexible legs 3 and an ear plate of the flexible hinge is welded thereon, such as Figure 7 shown.

[0040] The top spacing of a pair of flexible legs 3 is smaller than the bottom spacing, so as to form an A-shape, and the distance between the two legs gradually decreases from bottom to top.

[0041] In order to overcome the additional bending moment caused by the vertical force transmitted from the flexible hinge to the leg, a transverse tube 4 is provided between a pair of flexible legs 3, and the transverse tube 4 is close to the flexible hinge support. The transverse tube 4, as a support rod, can provide axial support to eliminate the additional bending moment on the top of the leg, greatly improving the stress condition of the structure, and improving the mechanical properties and service life of the structure.

[0042] In some embodiments, the flexible legs 3 and the transverse tube 4 are round tubes, such as Figures 8A-8B The round tube cross-section support rod and the round tube cross-section support leg are welded together, the manufacturing and welding process is simple, and the appearance is simple and beautiful.

[0043] The flexible hinge 8 is connected by a lug plate and a pin. Figure 7As shown, a pair of first ear plates 31 are provided at the bottom of the main beam 1, and a pair of second ear plates 81 are provided at the top of the flexible leg 3. Specifically, a horizontally arranged flange plate 33 is welded on the top of the flexible leg 3, and the second ear plate 81 is welded on the flange plate 33. The first ear plate 31 and the second ear plate 81 are connected by a pin 82 to form a flexible hinge 8. The two first ear plates 31 and the main beam connection section are designed as a box-type structure 80 to improve strength. Preferably, a reinforcing rib can also be provided between the second ear plate 81 and the flange plate 33 to improve strength.

[0044] In some embodiments, a sleeve 22 is provided inside the main beam 1, and the sleeve 22 is preferably a box-shaped sleeve, which is welded to the upper and lower surfaces of the main beam. The connection area between the sleeve and the inner wall of the lower part of the main beam is aligned with the box-shaped structure 80 in the axial direction to improve the local stress condition at the welding point, such as Figure 7 As shown in area U.

[0045] Continue to refer to Fig. 9 As shown, the leg also includes a pair of rigid legs 2 and an adapter 21 located at the top of the rigid legs 2. One end of the adapter 21 is connected to the rigid legs 2 through a connecting flange 23, and the other end of the adapter 21 is welded to the outside of the main beam 1. The pair of adapters 21 are arranged in parallel, and the top spacing of the pair of rigid legs 2 is smaller than the bottom spacing, forming an A-shaped arrangement. The adapter 21 simplifies the connection and welding process between the main beam and the leg, and simplifies the cross section of the leg end. When the adapter 21 is not used, the cross section of the top of the leg is a spatial curved surface, and when the adapter 21 is used, the top of the leg is a plane and connected through a flange. Since the adapter 21 can be manufactured and welded with the main beam in advance, the leg and the upper structure are only connected through the plane of the connecting flange 23 during assembly and welding, which simplifies the positioning and connection process. The existence of the adapter 21 can also change the welding form between the leg and the main beam from overhead welding to downward welding through the surface of the flange plate, thereby simplifying the welding process.

[0046] A sleeve 22 having the same cross section as the adapter 21 is arranged inside the main beam 1, and the two ends of the sleeve 22 are welded to the upper and lower surfaces inside the main beam 1. When the lower part of the sleeve 22 is butted against the inner surface of the main beam, the size profile of the adapter 21 is aligned, for example, having the same width and length, to ensure good force transmission effect and local force.

[0047] In some embodiments, longitudinal ribs may be provided inside the sleeve 22 and the adapter 21 to enhance local stability.

[0048] In some embodiments, the cross-section of the rigid leg 2 is waist-shaped, such as Figures 10A-10B As shown. The waist-shaped cross section is larger near the main beam 1 and smaller near the lower cross beam 5, with a uniform transition from top to bottom. The waist-shaped cross section with an arc shape can effectively reduce wind resistance. In addition, the rigid outrigger can also be constructed with a conventional rectangular cross section, in which case the cross section of the outrigger is also larger at the top and smaller at the bottom.

[0049] Preferably, the spacing of the rigid legs 2 within a length close to the main beam 1 is set to be equal in width, and then narrowed toward the lower cross beam 5, so that the rigidity of the entire gantry in the direction of the trolley can be further improved. The lower part of the rigid legs 2 is directly welded to the lower cross beam 5 as a whole.

[0050] The above streamlined single-girder automated rail crane has the following advantages:

[0051] (1) The single main beam adopts an inclined web to support the trolley track, and the inclination angle can be changed. Compared with the conventional vertical web structure, it can reduce the impact of the arc part of the main beam on the installation space of the trolley, and increase the design space of the track and the trolley;

[0052] (2) The flexible hinge structure between the flexible legs and the main beam releases the rotational freedom between the main beam and the flexible legs, forming a statically determinate structure between the entire gantry and the ground track. The deformation of the main beam will almost no longer cause the legs to lie outward, significantly reducing the gnawing force between the trolley and the track. The cross tube on the upper part of the flexible hinge offsets the additional bending moment generated after being subjected to the upper load of the trolley, effectively improving the stress conditions of the flexible hinge and the flexible legs. The structure intersecting with the circular tube of the flexible leg provides the joint with better stiffness and fatigue resistance. No additional reinforcing ribs such as plug plates and wraps are required, simplifying the design and structure.

[0053] (3) The top of the rigid leg is connected to the main beam through an adapter, which effectively simplifies the cross-section of the rigid leg end and simplifies the connection welding process between the main beam and the leg.

[0054] It should be noted that the above content uses words such as "first" and "second" to limit components, which is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0055] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0056] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A streamlined single-girder automated rail crane comprises a main beam, legs and a trolley, and also comprises a main beam track structure, which is arranged on the main beam, and is characterized in that: The main beam track structure includes: A motherboard is horizontally fixed on the main beam; a web fixedly connected to the mother plate and the main beam, and A track, arranged on the top of the web, providing a moving track for the trolley; Wherein, an extension direction of the web toward the track and an extension direction of the mother plate toward the main beam form an obtuse angle.

2. The streamlined single-girder automated rail crane according to claim 1, characterized in that: The obtuse angle α ranges from 90 to 110°.

3. The streamlined single-girder automated rail crane according to claim 1, characterized in that: The legs include a pair of flexible legs and a flexible hinge located at the top of the pair of flexible legs, the top spacing of the pair of flexible legs is smaller than the bottom spacing, and also include a transverse tube connecting the pair of flexible legs, the transverse tube is close to the flexible hinge.

4. The streamlined single-girder automated rail crane according to claim 3, characterized in that: The flexible legs and the transverse tube are round tubes.

5. The streamlined single-girder automated rail crane according to claim 3, characterized in that: A pair of first ear plates are provided at the bottom of the main beam, and a pair of second ear plates are provided at the top of the flexible legs. The first ear plates and the second ear plates are connected by a pin shaft to form the flexible hinge.

6. The streamlined single-girder automated rail crane according to claim 5, characterized in that: The connection section between the first ear plate and the main beam is designed as a box-type structure; A sleeve is provided inside the main beam, and the sleeve is connected to the inner wall of the main beam, wherein a connection area between the sleeve and the lower inner wall of the main beam is aligned with the box-type structure in the axial direction.

7. The streamlined single-girder automated rail crane according to claim 6, characterized in that: Longitudinal ribs are arranged in the sleeve.

8. The streamlined single-girder automated rail crane according to claim 1, characterized in that: The support legs include a pair of rigid support legs and an adapter located at the top of the rigid support legs, one end of the adapter is connected to the rigid support legs through a flange, and the other end of the adapter is welded to the outside of the main beam. The pair of adapters are arranged in parallel, and the top spacing of the pair of rigid support legs is smaller than the bottom spacing.

9. The streamlined single-girder automated rail crane according to claim 8, characterized in that: A sleeve is provided inside the main beam, and the butt joint dimension between the sleeve and the lower surface of the main beam is aligned with the connection dimension between the adapter and the sleeve.

10. The streamlined single-girder automated rail crane according to claim 8, characterized in that: The cross section of the rigid supporting leg is waist-shaped.

11. The streamlined single-girder automated rail crane according to claim 1, characterized in that: Longitudinal ribs and partitions are arranged inside the main beam along the longitudinal direction.

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