Rail-mounted gantry and high-speed automatic rail-mounted gantry

Abstract

The rail-mounted gantry crane portal frame comprises a girder, a lower cross beam, a rigid supporting leg and a flexible supporting leg, the girder and the lower cross beam are connected with the rigid supporting leg and the flexible supporting leg on the upper side and the lower side respectively, the flexible supporting leg is connected with the first end of the girder through a flexible hinge, the rigid supporting leg is fixedly connected with the second end of the girder, and the rigid supporting leg is of a hollow structure and comprises a kidney-shaped section; the flexible supporting leg is of a hollow circular tube structure. The portal frame of the rail-mounted gantry crane adopts a structure in which the steel leg and the flexible leg are matched, the flexible leg adopts a hollow circular tube structure, and the steel leg adopts a waist-shaped section design, so that the wind resistance can be effectively reduced, and the aim of light weight is fulfilled. The invention further provides a high-speed automatic rail-mounted gantry crane.

Description

Technical Field

[0001] The invention relates to the field of rail cranes, and in particular to the field of gantry cranes. Background Art

[0002] High-speed automated non-cantilever rail crane is a key transport equipment for automated terminal yards. The gantry of the rail crane includes a double rigid leg or a rigid leg and flexible leg combination structure. For high-speed automated rail cranes, an effective low-wind resistance and lightweight gantry structure is urgently needed. Summary of the invention

[0003] An object of the present invention is to provide a rail hanging gantry with better mechanical properties.

[0004] To achieve the above-mentioned purpose, an automated rail crane gantry includes a main beam, a lower cross beam, rigid legs and flexible legs. The main beam and the lower cross beam are respectively connected to the rigid legs and the flexible legs at the upper and lower sides. The first end of the flexible legs and the main beam are connected by a flexible hinge, and the second end of the rigid legs and the main beam are fixedly connected. The rigid legs are hollow structures including a waist-shaped cross section; the flexible legs are hollow circular tube structures.

[0005] In one or more embodiments, the circumferential surface of the second end is an arc surface, and the curvature of the arc surface is consistent with the curvature of the curved segment of the waist-shaped cross-section.

[0006] In one or more embodiments, longitudinal ribs and / or partitions are provided inside the rigid legs.

[0007] In one or more embodiments, the length of the waist-shaped cross-section of the rigid support leg close to the main beam is greater than the length of the cross-section close to the lower cross beam.

[0008] In one or more embodiments, the waist-shaped cross-sectional length of the rigid support leg gradually decreases from the side of the main beam to the side of the lower cross beam, or the rigid support leg includes a first area and a second area in sequence from the side of the main beam to the lower cross beam, the waist-shaped cross-sectional length of the first area is equal, and the waist-shaped cross-sectional length of the second area gradually decreases from the side of the main beam to the side of the lower cross beam.

[0009] In one or more embodiments, the beam is a double-main-beam structure.

[0010] In one or more embodiments, a pair of the rigid legs support the beam in parallel, and a pair of the flexible legs support the beam in parallel; the gantry also includes an auxiliary support member connecting the pair of the rigid legs, and / or an auxiliary support member connecting a pair of flexible legs.

[0011] In one or more embodiments, the gantry further includes auxiliary support components respectively arranged between a pair of the rigid legs and a pair of flexible legs.

[0012] In one or more embodiments, the auxiliary supporting component has a Z-shaped structure.

[0013] In one or more embodiments, the width of the first end of the beam is smaller than the width of the second end.

[0014] In one or more embodiments, the width of the first end of the beam is smaller than the width of the second end.

[0015] Another object of the present invention is to provide a high-speed automated rail crane, including the above-mentioned automated rail crane gantry.

[0016] The above-mentioned rail crane gantry adopts a structure in which steel legs and flexible legs are combined, wherein the flexible legs adopt a hollow circular tube structure and the steel legs adopt a waist-shaped cross-section design, which can effectively reduce wind resistance and achieve the purpose of lightweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 This is the basic structural diagram of the high-speed automated rail crane;

[0019] Figure 2 This is a side view of a high-speed automated rail crane;

[0020] Figure 3 is a side view of the flexible leg;

[0021] Figure 4 is along Figure 3 Schematic diagram of the AA, BB, and CC sections;

[0022] Figure 5 is a side view of the rigid outrigger;

[0023] Figure 6 is along Figure 5 Schematic diagram of the DD, EE, and FF sections;

[0024] Fig. 7A is along Figure 5 A schematic diagram of the first embodiment viewed from the direction G;

[0025] Figure 7B is along Figure 5 A schematic diagram of the second embodiment viewed from the direction G;

[0026] Figure 8 yes Fig. 7A A top view of the first embodiment of the rigid support leg viewed along direction A1;

[0027] Fig. 9 yes Fig. 7A A top view of the first embodiment of the rigid support leg along the direction A2;

[0028] Fig. 10A This is the front view of the girder;

[0029] Fig. 10B This is a top view of the beam.

[0030] Symbols and Markings

[0031] 1 beam

[0032] 2 Rigid outriggers

[0033] 3 Flexible legs

[0034] 4 Auxiliary support

[0035] 5 Lower beam

[0036] 6. Trolley travel mechanism

[0037] 7 Car system

[0038] 8 Flexible hinge

[0039] 9. Hyperbaric Room

[0040] 10 Electrical Room

[0041] 25 longitudinal reinforcement

[0042] 26 Bulkhead

[0043] 27 First Area

[0044] 28 Second Area

[0045] 101 First End

[0046] 102 Second End

[0047] 103 Arc surface

[0048] 104 inner side

[0049] 105 outer side

[0050] 201 Waist type outer surface DETAILED DESCRIPTION

[0051] 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.

[0052] 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.

[0053] High-speed automated non-cantilever rail crane is a key transport equipment for automated terminal yards. Its trolley travel speed can usually reach 240-300m / min. From the direction of the trolley, the whole machine structure is gate-shaped; from the direction of the trolley, the whole machine is also gate-shaped or A-shaped. As the box beam is easy to manufacture and assemble and has excellent mechanical properties, the whole machine structure usually adopts the box beam structure.

[0054] Since the speed of the high-speed automated rail crane trolley is relatively high, for example, estimated at 270m / min, a relative wind speed of 4.5m / s must be added when calculating wind resistance. Therefore, it is urgent to design a low-wind resistance, lightweight high-speed automated rail crane gantry structure to reduce motor power and energy consumption.

[0055] Figure 1 and Figure 2 The basic structure of a high-speed automated rail crane is shown, and the xyz coordinate system is used to indicate the orientation, with the x direction indicating the length direction, the z direction indicating the width direction, and the y direction indicating the height direction. The high-speed automated rail crane includes components such as a gantry M, a trolley travel mechanism 6, a trolley system 7, a high-voltage room 9, and an electrical room 10. The gantry is the supporting frame of the automated rail crane and provides a stable structure for the crane system. The trolley travel mechanism 6 refers to the part of the crane system that is responsible for moving laterally along the gantry, and is used to move the trolley system to the desired position. The trolley system 7 is one of the key components of the automated rail crane, and is equipped with an electric motor, a drive wheel, and a hook for lifting and releasing containers.

[0056] Furthermore, the gantry M includes a beam 1, a rigid leg 2, a flexible leg 3, and a lower cross beam 5. The beam 1 and the lower cross beam 5 are connected to the rigid leg 2 and the flexible leg 3 at the upper and lower sides of the y direction, respectively, and the rigid leg 2 and the flexible leg 3 jointly support the beam 1. The beam 1 is a double-main-beam structure. The bottom of the flexible leg 3 is welded to the lower cross beam 5 as a whole, and the flexible leg 3 can be inserted into the lower cross beam 5 and then welded, or the end of the flexible leg can be directly welded to the upper surface of the lower cross beam 5. The rigid leg 2 is connected to the beam 1 and the lower cross beam 5 by a fixing method including but not limited to welding.

[0057] The top of the flexible leg 3 is connected to the first end 101 of the beam 1 through the flexible hinge 8. The flexible hinge 8 releases the rotational freedom of the flexible leg 3 and the beam 1 at the flexible hinge, so that the two can rotate freely along the flexible hinge in the plane formed by them. The flexible hinge only allows rotation along the plane formed by the beam leg (i.e., rotation along the z-axis), and does not allow rotation of the vertical axis (y-axis) and the horizontal axis (x-axis). The flexible hinge releases the bending moment between the beam and the rigid leg, reducing the force on the flexible leg. The cooperation of the rigid leg and the flexible leg can also eliminate the rail gnawing force and ensure the smooth operation of the whole machine. The rigid leg 2 and the second end 102 of the beam 1 are fixedly connected, for example, by welding.

[0058] like Figure 3 and Figure 5 As shown, a pair of rigid legs 2 support the beam 1 in parallel. To improve the connection strength, an auxiliary support member 4 is provided between the pair of rigid legs 2. A pair of flexible legs 3 support the beam 1 in parallel. An auxiliary support member 4 may also be provided between the pair of flexible legs 3. In some embodiments, the auxiliary support member 4 is a Z-shaped structure. The Z-shaped support between the rigid legs 2 can be connected by a round tube or other forms of tubes without limitation. For the structure where the high-voltage room 9 is placed on the legs, the lower support rod of the Z-shaped support is made of two rectangular tubes, such as Figure 6 The structure shown in the cross section DD is convenient for placing the high-voltage room. If the high-voltage room is not placed at this location, the lower support rod can be made of round tube to keep it consistent with other support rods. Therefore, the two parallel legs are directly connected by Z-shaped support welding, without other connecting parts such as plug plates, with beautiful appearance and good fatigue performance.

[0059] The flexible leg 3 is a hollow circular tube structure. Further, preferably, the circular tube section of the flexible leg is designed as a compact section. Since the local buckling of the compact section occurs after the material yields, there is no need to set reinforcing ribs inside the circular tube section. Compared with the traditional box-section leg, the longitudinal ribs and partitions are omitted, which simplifies the material, production and welding workload.

[0060] The rigid legs 2 are also hollow structures, including waist-shaped cross-sections. Figure 8-9The waist-shaped outer peripheral surface 201 of the rigid leg is shown, and the waist shape is composed of two straight segments P and two curved segments S, and the curved segments S and the straight segments P are connected by welding. By designing the flexible leg 3 into a waist-shaped structure, the wind resistance can be effectively reduced and the structural weight can be saved. In some embodiments, longitudinal ribs 25 and partitions 26 are provided inside the rigid leg 2 to ensure the local stability of the leg structure.

[0061] On the basis of this embodiment, further, the circumferential surface of the second end 102 of the beam connected to the rigid leg 2 is an arc surface 103, such as Figures 10A-10B As shown, the curvature of the arc surface 103 is preferably consistent with the curvature of the curved segment S of the waist-shaped cross-section of the rigid leg 2. This design can further ensure the smoothness of the outer shape and further reduce wind resistance.

[0062] Continue to refer to Figures 10A-10B As shown, in some embodiments, the beam 1 adopts a variable cross-section structure. In the z direction, the width of the first end 101 is smaller than the width of the second end 102, that is, the beam 1 has a shorter beam width at the connection position with the flexible leg 3. This design can further save structural weight and improve the stress of the flexible hinge. Specifically, the beam 1 includes a pair of parallel beams, and a variable cross-section transition structure is provided on the outer side surface 105 of the beam to achieve a narrower beam width. The inner side surface 104 of the beam remains straight.

[0063] In the height direction along the y direction, the outer dimensions of the flexible leg 3 remain unchanged throughout the entire height range.

[0064] In order to ensure the support rigidity and achieve the purpose of lightweight, in the height direction, the cross-sectional length of the rigid leg 2 close to the main beam is greater than the cross-sectional length close to the lower cross beam, that is, the upper cross-sectional length of the waist-shaped rigid leg 2 along the y direction is large, and the lower cross-sectional length is small. Figure 8-9 As shown, within the entire height range of the waist-shaped leg, the curved segment S of the inner and outer peripheral cross-sections remains unchanged, and only the straight segment P is shortened. Based on this, from the overall front and rear sides along the z direction, the entire rigid leg is composed of two semicircular tubes located in the x direction and trapezoidal panels located on both sides of the z direction. The straight segment P of the rigid leg 2 gradually shortens from top to bottom in the x direction, the distance of the straight segment P in the z direction remains unchanged, and the size of the curved segment S remains unchanged.

[0065] like Fig. 7A As shown in FIG. 1 , the cross-sectional length of the rigid support leg 2 in the x direction gradually decreases from the main beam side to the lower cross beam side along the z direction, the curved section of the waist-shaped cross section transitions evenly from top to bottom, and the straight section gradually shortens. Alternatively, a section close to the main beam may be of equal length, and then gradually narrows downward, such as Figure 7BAs shown, the rigid leg 2 includes a first region 27 and a second region 28 from the side of the main beam to the side of the lower cross beam. The first region 27 is a leg equal length structure, and the length of the waist-shaped section in the x direction is equal. The second region 28 is a leg gradually narrowing structure, and the length of the waist-shaped section gradually decreases from the side of the main beam to the side of the lower cross beam. The structure combines the leg equal length structure and the leg gradually narrowing structure, and the structure further improves the rigidity of the structure in the direction of the trolley.

[0066] The above-mentioned rail hanging gantry has the following advantages:

[0067] (1) The gantry structure adopts a rigid-flexible leg structure. The rigid legs adopt a waist-shaped cross-section design, and the flexible legs adopt a circular tube structure. The waist-shaped rigid legs and circular tube flexible legs effectively reduce wind resistance with their waist-shaped streamlined shape;

[0068] (2) The end of the beam on the side of the rigid leg is arc-shaped, which is consistent with the waist-shaped outer contour of the rigid leg to achieve a coordinated appearance and reduce wind resistance;

[0069] (3) The use of Z-bracing auxiliary support components can significantly improve the directional rigidity of the truck;

[0070] (4) The waist-shaped cross-section of the rigid leg has a larger width at the connection with the main beam and a smaller width at the connection with the lower cross beam, which can further save structural weight and improve the stress condition of the flexible hinge;

[0071] (5) The cross-section of the joint between the beam and the flexible leg becomes narrower, which can save material costs on the one hand and improve the stress condition of the flexible hinge on the other hand, making it easier to design the flexible joint.

[0072] Combined with the introduction of the above-mentioned rail crane gantry, it can also be understood that a high-speed automated rail crane including the gantry has excellent mechanical properties and economic benefits.

[0073] 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.

[0074] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0075] 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.

[0076] 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. The rail hanging gantry is characterized by: The invention comprises a main beam, a lower cross beam, a rigid leg and a flexible leg, wherein the main beam and the lower cross beam are connected to the rigid leg and the flexible leg at the upper side and the lower side respectively, the first end of the flexible leg and the main beam are connected by a flexible hinge, and the second end of the rigid leg and the main beam are fixedly connected. The rigid legs are hollow structures, including waist-shaped cross-sections; and The flexible legs are hollow circular tube structures.

2. The rail hanging gantry according to claim 1, characterized in that: The circumferential surface of the second end is an arc surface, and the curvature of the arc surface is consistent with the curvature of the curved segment of the waist-shaped cross-section.

3. The rail hanging gantry according to claim 1, characterized in that: The interior of the rigid supporting leg is provided with longitudinal ribs and / or partitions.

4. The rail hanging gantry according to claim 1, characterized in that: The length of the waist-shaped section of the rigid support leg close to the main beam is greater than the length of the section close to the lower cross beam.

5. The rail hanging gantry as claimed in claim 4, characterized in that: The waist-shaped cross-section length of the rigid support leg gradually decreases from one side of the main beam to one side of the lower cross beam, or The rigid support leg includes a first area and a second area in sequence from the main beam to the lower cross beam. The waist-shaped cross-section length of the first area is equal, and the waist-shaped cross-section length of the second area gradually decreases from one side of the main beam to the side of the lower cross beam.

6. The rail hanging gantry according to claim 1, characterized in that: The beam is a double main beam structure.

7. The rail hanging gantry according to claim 1, characterized in that: A pair of rigid legs supports the beam in parallel, and a pair of flexible legs supports the beam in parallel; The gantry also includes an auxiliary support member connected to a pair of rigid legs, and / or A secondary support member connecting a pair of flexible legs.

8. The rail hanging gantry according to claim 7, characterized in that: The auxiliary support member has a Z-shaped structure.

9. The rail hanging gantry according to claim 1, characterized in that: The width of the first end of the beam is smaller than the width of the second end.

10. High-speed automated rail crane, characterized in that: It comprises a rail hanging gantry as described in any one of claims 1 to 9.

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