Streamline-shaped single-girder automatic rail-mounted gantry crane
By designing a streamlined single main beam structure, using inclined mother plate and web plate, combined with flexible legs and adapters, the problem of difficult track layout in rail-mounted cranes was solved, achieving spatial optimization of the track and trolley, reducing wind resistance and improving the mechanical performance of the structure.
Patent Information
- Application Number
- CN202520273861.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-02-20
AI Technical Summary
Existing high-speed automated cantilever-less rail-mounted gantry cranes create interference zones between the main beam, web, and rail, leading to difficulties in rail layout and affecting the implementation of optimized main beam cross-sections.
The structure adopts a streamlined single main beam structure with inclined mother plate and web plate to form an obtuse angle α. It combines flexible and rigid legs, and designs flexible hinges and transition parts to simplify the connection process and improve the structural adaptability.
This solved the problem of difficult track layout, increased the design space for tracks and trolleys, reduced wind resistance, and improved the mechanical performance and service life of the structure.
Smart Images
Figure CN223659661U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of rail hoist, concretely relates to single main girder automatic rail hoist structure. BACKGROUND
[0002] High-speed automatic cantilever-free rail hoist is the key transport equipment in automatic wharf yard, and is characterized by high speed and busy operation. The trolley track is generally supported by vertical web plates, and for some optimized main girder sections, the main girder and the web plates and the track are prone to interference, affecting the implementation of the optimized main girder section. SUMMARY
[0003] An object of the utility model is to provide a streamlined single main girder automatic rail hoist.
[0004] To achieve the above object, the streamlined single main girder automatic rail hoist comprises a main girder, a support leg and a trolley, and further comprises a main girder track structure arranged on the main girder, which comprises a female plate, a web plate and a track. The web plate is fixedly connected with the female plate and the main girder, and the track is arranged on the top of the web plate to provide a moving track for the trolley. The extension direction of the web plate towards the track forms an obtuse angle with the extension direction of the female plate towards the main girder.
[0005] In one or more embodiments, the obtuse angle α ranges from 90 to 110 degrees.
[0006] In one or more embodiments, the support leg comprises a pair of flexible support legs and a flexible hinge located at the top of the pair of flexible support legs, the top of the pair of flexible support legs has a smaller spacing than the bottom, and further comprises a cross pipe connecting the pair of flexible support legs, the cross pipe is close to the flexible hinge.
[0007] In one or more embodiments, the flexible support leg and the cross pipe are circular pipes.
[0008] In one or more embodiments, the bottom of the main girder is provided with a pair of first ear plates, the top of the flexible support leg is provided with a pair of second ear plates, 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 of the first ear plate and the main girder is designed as a box structure; the main girder is provided with a sleeve inside, and the sleeve is connected with the inner wall of the main girder, wherein the connection area of the sleeve and the lower inner wall of the main girder is axially aligned with the box structure.
[0010] In one or more embodiments, longitudinal reinforcement is arranged in the sleeve.
[0011] In one or more embodiments, the leg comprises a pair of rigid legs and an adapter located at the top of the rigid legs, one end of the adapter is connected with the rigid leg through a flange, the other end of the adapter is welded with the outside of the main beam, a pair of adapters are arranged in parallel, and the top distance of a pair of rigid legs is less than the bottom distance.
[0012] In one or more embodiments, the main beam is internally provided with a sleeve, the sleeve is in abutment with the lower surface of the main beam, and the size of the connection between the sleeve and the adapter is aligned.
[0013] In one or more embodiments, the cross section of the rigid leg is a waist type.
[0014] In one or more embodiments, the main beam is internally provided with longitudinal ribs and partitions in the longitudinal direction.
[0015] The streamlined single-main-beam automatic rail hoist has the main beam rail structure with the inclined structure, the obtuse angle has a wide inclined range, the inclined web plate can be designed to have different angles according to different trolley track gauges and different main beam optimization structures, the main beam rail structure has better adaptability, and the problem that the rail or the wheel device is difficult to arrange due to too small space does not occur. BRIEF DESCRIPTION OF DRAWINGS
[0016] The above and other features, properties, and advantages of the present application will become more apparent through the following description with reference to the accompanying drawings and embodiments, in which:
[0017] Figure 1 is a basic structure schematic diagram of the streamlined single-main-beam automatic rail hoist;
[0018] Figure 2 is a basic structure side view of the streamlined single-main-beam automatic rail hoist;
[0019] Figure 3 is a schematic diagram of a traditional web plate and guide rail connection structure;
[0020] Figure 4 is a schematic diagram of an interference area;
[0021] Figure 5 is a schematic diagram of an inclined web plate;
[0022] Figure 6 is a schematic diagram of a flexible leg;
[0023] Figure 7 is an enlarged view of a flexible hinge;
[0024] Figures 8A-8B is a sectional view along directions A-A and B-B in the figure; Figure 6
[0025] Figure 9 is a schematic view of a rigid leg;
[0026] Figures 10A-10B is a cross-sectional view along Figure 9 the C-C, D-D direction. DETAILED DESCRIPTION
[0027] The utility model will be further described below in combination with specific embodiments and drawings, and more details are set forth in the following description so as to fully understand the utility model, but the utility model can obviously be implemented in various other ways different from the description, and those skilled in the art can make similar generalization and deduction according to actual application conditions without departing from the connotation of the utility model, therefore the protection scope of the utility model should not be limited by the content of the specific embodiments.
[0028] It should be noted that these and other subsequent drawings are merely examples, and are not drawn to scale, and should not be used as a limitation on the actual scope of protection required by the utility model.
[0029] As Figure 1 and Figure 2 shown, the automated rail-mounted crane includes a portal frame 1, a main trolley traveling mechanism 6, a trolley traveling mechanism 7 and accessory components, including but not limited to electrical rooms 10, high-voltage rooms 9 and other structures. The main beam and the end beam form the portal frame of the automated rail-mounted crane. The wheels of the trolley run on the tracks on both sides of the main beam, and the steel wire rope passes through the pulley at the end of the trolley frame from the drum to the upper frame of the spreader on both sides of the main beam, combined with the movement of the lifting mechanism, to realize the precise positioning and lifting of the cargo. The main trolley traveling mechanism enables the crane to move within the range of the yard to lift containers in different positions. The stacking and grabbing functions of the yard containers are completed by the movement of the main trolley, the trolley and the spreader.
[0030] Conventional automated rail-mounted cranes are mostly double-beam structures, that is, they include a main beam with two trolley tracks laid on it, and the trolley runs on the main beam track. The trolley track is generally supported by a web, as shown in Figure 3 The webs on both sides of the cross section supporting the track are vertically arranged. However, when the curvature of the adjacent main beam changes during the design process, the clearance size between the web and the arc will change under the condition of a certain track gauge. The clearance should not be too small, otherwise there will not be enough space on the cover plate to arrange the track, nor should it be too large, otherwise it will cause material waste and is not conducive to the stress of the track support plate. The curvature of the arc, the track gauge and the clearance are mutually constrained.
[0031] The circular arc curvature has a great influence on the wind resistance coefficient and the mechanical properties of the cross section. For example, for the problem of large wind resistance, a round pipe cross section leg and an oval main beam type track crane are generally used, and the use of a round pipe cross section main beam can effectively reduce the wind resistance. For example, Chinese patent CN208532046, but the rigid leg is composed of a round pipe leg and an auxiliary support rod, in order to ensure the stiffness in the direction of the trolley, the upper part of the auxiliary support rod needs to be arranged outside the gantry, which will make the overall machine larger in size outside the track of the rigid leg. For the wharf with multiple machines operating in parallel, such arrangement sometimes cannot meet the clearance requirements between adjacent machines. For example, the differential type track container handling crane described in Chinese patent CN105384079 uses a gantry track crane with a round pipe cross section truss type main beam, but the round pipe truss structure also reduces the wind resistance, and similarly, the legs of this type of machine are also composed of auxiliary support rods and main pipes, which also increase the overall machine width in certain cases, which is not conducive to meeting the clearance requirements of the wharf when operating in parallel.
[0032] Based on this, under the condition of optimizing the circular arc curvature of the girder, a compact gantry main beam track structure is needed which is convenient for arranging tracks.
[0033] The gantry 1 includes a main beam 1, a flexible leg 3, a rigid leg 2, a lower cross beam 5 and the like. 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 through a method such as welding. Figure 3 As shown in the figure, the main beam 1 has a streamlined outer contour, and a track 32 is laid on the upper part of the main beam 1 for the trolley 7 to run. In the traditional design structure, a small section of web plate 33 is extended from the end of the main beam on both sides, and a wing plate 34 is laid on the top of the web plate 33, and the wing plate 34 is extended to the side wall of the main beam 1 and welded. Figure 4 The figure shows the schematic diagram after the trolley track gauge changes or the circular arc curvature of the main beam 1 changes. At this time, the wheel assembly 71 and the circular arc plate 12 of the main beam 1 generate an interference area P, and it is difficult to arrange the track or accommodate the wheel device due to the too close distance between the track center and the circular arc plate.
[0034] Figure 5 The main beam track structure described in the present disclosure is shown, which includes a mother plate 16, a web plate 33 and a track 32. The mother plate 16 is fixed horizontally on the main beam 1. Further, the main beam 1 includes a spliced upper cover plate 11, a lower cover plate 19 and a circular arc plate 12, and the mother plate 16 is horizontally arranged, extending into the inside of the main beam 1 and connected with the circular arc plate 12.
[0035] The web plate 33 is fixedly connected with the mother plate 16 and the main beam 1, and the track 32 is arranged on the top of the web plate 33 to provide a moving track for the trolley.
[0036] The web plate 33 forms an obtuse angle a with the extension direction of the track 32 and the extension direction of the female plate 16 towards the main beam 1, and the web plate 33 forms an acute angle θ with the perpendicular line of the female plate 16, θ+90°=a. After the web plate 33 is arranged in an inclined manner, the clearance between the track center and the circular arc plate 12 is no longer strictly limited by the height H1 of the track and the shape and size of the circular arc plate 12, such as the width W, the inner diameter H, and the wall thickness T2, and the design space of the positions and sizes of the upper cover plate 11 and the lower cover plate 19 is also increased.
[0037] In some embodiments, the obtuse angle a ranges from 90° to 120°. Compared with the traditional vertical plate structure, the inclined range of the obtuse angle a is wide, the inclined web plate of different angles can be designed for the cross section optimized for different trolley track gauges and different main beams, the main beam track structure has better adaptability, and the problem that the track or the wheel device is difficult to arrange due to too small space will not occur. The track can be a pressed plate type track or a welded track. When the 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 main beam structure, and the steel plate is rolled or cut into each segment of the required cross section shape and then welded into a streamlined outer contour. The main beam is provided with a transverse partition plate 17 inside to improve the torsional stability of the main beam. The main beam is provided with longitudinal reinforcement 18 in the axial direction inside to improve the stability of the web plate and the wing plate of the main beam.
[0039] Referring back to Figure 6 In some embodiments, the leg includes a pair of flexible legs 3 and a flexible hinge at the top of the pair of flexible legs 3, and specifically, a horizontal flange plate 33 is welded at the top of the flexible leg 3, and an ear plate of the flexible hinge is welded on the flange plate, as shown in Figure 7 .
[0040] The top distance of the pair of flexible legs 3 is smaller than the bottom distance, so that the pair of flexible legs 3 forms an A-shaped structure, 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 to the leg by the flexible hinge, a cross pipe 4 is arranged between the pair of flexible legs 3, and the cross pipe 4 is close to the flexible hinge support. The cross pipe 4 acts as a support rod and 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 leg 3 and the cross pipe 4 are circular pipes, as shown in Figures 8A-8B The cross pipe support rod and the cross pipe leg are cross-welded, and the manufacturing and welding process is simple, and the appearance is simple and beautiful.
[0043] The flexible hinge 8 adopts the connection form of an ear plate and a pin shaft. As shown in Figure 7As shown, the bottom of the main beam 1 is provided with a pair of first ear plates 31, and the top of the flexible leg 3 is provided with a pair of second ear plates 81, specifically, a horizontal 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 shaft 82 to form a flexible hinge 8. The two first ear plates 31 and the main beam connecting section are designed in a box structure 80 to improve the strength. Preferably, a reinforcing rib can also be arranged between the second ear plate 81 and the flange plate 33 to improve the strength.
[0044] In some embodiments, a sleeve 22 is arranged inside the main beam 1, which is preferably a box-type sleeve welded with the upper and lower surfaces of the main beam. The connecting area between the sleeve and the inner wall of the lower part of the main beam is axially aligned with the box structure 80 to improve the local stress condition of the welding part, as shown in the area U. Figure 7
[0045] Continuing to refer to Figure 9 As shown, the leg further includes a pair of rigid legs 2 and an adapter 21 located at the top of the rigid leg 2, one end of the adapter 21 is connected with the rigid leg 2 through a connecting flange 23, and the other end of the adapter 21 is welded with the outside of the main beam 1. A pair of adapters 21 are arranged in parallel, and the top of the pair of rigid legs 2 has a smaller spacing than the bottom, which is arranged in an A shape. The adapter 21 simplifies the connecting and welding process between the main beam and the leg, and simplifies the end section of the leg. When the adapter 21 is not used, the top section of the leg is a spatial curved surface, and when the adapter 21 is used, the top of the leg is a plane and is connected through a flange. Since the adapter 21 can be made 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 connecting process. The existence of the adapter 21 can also change the welding form between the leg and the main beam from overhead welding to horizontal welding through the surface of the flange plate, thereby simplifying the welding process.
[0046] The main beam 1 is provided with a sleeve 22 with the same section as the adapter 21 inside, and the two ends of the sleeve 22 are welded with the upper and lower surfaces of the main beam 1. When the lower part of the sleeve 22 is butted with the inner surface of the main beam, the size and contour of the adapter 21 are aligned, for example, having the same width and length, to ensure good force transmission effect and local stress.
[0047] In some embodiments, longitudinal reinforcement can be arranged inside the sleeve 22 and the adapter 21 to strengthen the local stability.
[0048] In some embodiments, the cross section of the rigid leg 2 is a waist shape, as shown in Figures 10A-10B The waist-shaped cross section is large near the main beam 1 and small near the lower cross beam 5, and uniformly transitions from top to bottom. The waist-shaped cross section with a circular arc shape can effectively reduce wind resistance. In addition, the rigid leg can also be constructed with a conventional rectangular cross section, and in this case, the leg cross section is also large at the top and small at the bottom.
[0049] Preferably, the rigid legs 2 are arranged with equal width near the main girder 1, and then narrowed at the lower cross beam 5, so as to further improve the rigidity of the whole portal frame in the trolley direction.
[0050] The streamlined single-girder automatic rail crane has the following advantages:
[0051] (1) The single main girder adopts an inclined web to support the trolley track, and the inclination angle can be changed, which can reduce the influence of the outer shape size of the main girder arc portion on the trolley installation space, and increase the design space of the track and the trolley compared with the conventional vertical web structure;
[0052] (2) The flexible hinge structure between the flexible legs and the main girder releases the rotational freedom between the main girder and the flexible legs, and the whole portal frame forms a statically determinate structure with the ground track, so that the deformation of the main girder will hardly cause the outside of the legs to be flat, and the gnawing force between the trolley and the track is significantly reduced. The cross pipe at the upper part of the flexible hinge can offset the additional bending moment generated under the action of the upper load such as the trolley, effectively improving the stress condition of the flexible hinge and the flexible leg, and the structure of the circular pipe penetrating the flexible leg provides good stiffness and fatigue capacity for the joint, without additional reinforcing ribs such as inserts and coils, simplifying the design and structure;
[0053] (3) The top of the rigid leg is connected to the main girder through an adapter, effectively simplifying the end section of the rigid leg and the connection welding process between the main girder and the leg.
[0054] It should be noted that the above content uses the words "first", "second", etc. to limit the parts, which is only for the convenience of distinguishing the corresponding parts. If there is no further declaration, the above words have no special meaning, and therefore cannot be understood as a limitation on the scope of protection of the present application.
[0055] Meanwhile, specific words are used in the present application to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" means a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the "an embodiment" or "one embodiment" or "an alternative embodiment" mentioned in different places in the 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 properly combined.
[0056] The utility model discloses although the above-mentioned preferable embodiment is disclosed, but it is not used to limit the utility model, and any person skilled in the art can make possible change and modification without departing from the spirit and scope of the utility model. Therefore, all the modification, equivalent change and modification of the above-mentioned embodiment according to the technical essence of the utility model without departing from the technical scheme of the utility model all fall into the protection scope defined by the utility model claim.
Claims
1. Streamlined single girder automated rail crane, comprising a main girder, a support leg and a trolley, further comprising a main girder track structure arranged on the main girder, characterized in that, The main beam track structure comprises: a mother plate fixed horizontally on the main beam; a web plate fixedly connected with the mother plate and the main beam, and a track provided on the top of the web plate to provide a moving track for the trolley; wherein the extension direction of the web plate towards the track forms an obtuse angle with the extension direction of the mother plate towards the main beam.
2. The streamlined monospar automated rail-hoist of claim 1, wherein, The obtuse angle α ranges from 90 to 110 degrees.
3. The streamlined monospar automated rail-hoist of claim 1, wherein, The support leg comprises a pair of flexible support legs and a flexible hinge located at the top of the pair of flexible support legs, the top of the pair of flexible support legs has a smaller spacing than the bottom, further comprising a cross pipe connecting the pair of flexible support legs, and the cross pipe is close to the flexible hinge.
4. The streamlined monospar automated rail-hoist of claim 3, wherein, The flexible support leg and the cross pipe are circular tubes.
5. The streamlined monospar automated rail-hoist of claim 3, wherein, The main beam is provided with a pair of first ear plates at the bottom, and the flexible support leg is provided with a pair of second ear plates at the top, the first ear plate and the second ear plate are connected by a pin shaft to form the flexible hinge.
6. The streamlined monospar automated rail-hoist of claim 5, wherein, The connection section of the first ear plate and the main beam is designed as a box structure. The main beam is provided with a sleeve inside, and the sleeve is connected with the inner wall of the main beam, wherein the connection area of the sleeve and the lower inner wall of the main beam is axially aligned with the box structure.
7. The streamlined monospar automated rail-hoist of claim 6, wherein, The sleeve is provided with longitudinal ribs inside.
8. The streamlined monospar automated rail-hoist of claim 1, wherein, The support leg comprises 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 with the rigid support leg through a flange, and the other end of the adapter is welded with the outside of the main beam, a pair of adapters are arranged in parallel, and the top of a pair of rigid support legs has a smaller spacing than the bottom.
9. The streamlined monospar automated rail-hoist of claim 8, wherein, The main beam is provided with a sleeve inside, and the sleeve is connected with the lower surface of the main beam, and the connection size of the adapter and the sleeve is aligned.
10. The streamlined monospar automated rail-hoist of claim 8, wherein, The cross section of the rigid support leg is a waist type.
11. The streamlined monospar automated rail-hoist of claim 1, wherein, The main beam is provided with longitudinal ribs and partitions inside along the longitudinal direction.