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 utility model further provides a high-speed automatic rail-mounted gantry crane.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of rail hoist, in particular to the field of portal frame. BACKGROUND

[0002] High-speed automatic cantilever-free rail hoist is a key transport equipment in automatic wharf yard. The portal frame of the rail hoist includes a double rigid leg or a rigid leg and a flexible leg. For high-speed automatic rail hoist, an effective low-drag and lightweight portal frame structure is urgently needed. SUMMARY

[0003] One object of the utility model is to provide a rail hoist portal frame with better mechanical properties.

[0004] To achieve the above-mentioned purpose, the automatic rail hoist portal frame includes a girder, a lower crossbeam, a rigid leg and a flexible leg. The girder and the lower crossbeam are connected to the rigid leg and the flexible leg on the upper side and the lower side respectively. The flexible leg and the first end of the girder are connected by a flexible hinge. The rigid leg and the second end of the girder are fixedly connected. The rigid leg is a hollow structure including a waist-shaped cross section. The flexible leg is a hollow circular tube structure.

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

[0006] In one or more embodiments, the rigid leg is provided with longitudinal reinforcement and / or a partition plate inside.

[0007] In one or more embodiments, the length of the waist-shaped cross section of the rigid leg near the side of the girder is greater than the length of the cross section near the side of the lower crossbeam.

[0008] In one or more embodiments, the length of the waist-shaped cross section of the rigid leg gradually decreases from the side of the girder to the side of the lower crossbeam, or the rigid leg includes a first region and a second region in sequence from the side of the girder to the direction of the lower crossbeam. The length of the waist-shaped cross section of the first region is equal, and the length of the waist-shaped cross section of the second region gradually decreases from the side of the girder to the side of the lower crossbeam.

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

[0010] In one or more embodiments, a pair of rigid legs supports the girder in parallel, and a pair of flexible legs supports the girder in parallel. The portal frame further includes an auxiliary support connecting a pair of rigid legs and / or an auxiliary support connecting a pair of flexible legs.

[0011] In one or more embodiments, the gantry further comprises auxiliary support members disposed between the pair of rigid legs and the pair of flexible legs, respectively.

[0012] In one or more embodiments, the auxiliary support members are in a Z-shaped configuration.

[0013] In one or more embodiments, the first end of the girder has a width that is less than a width of the second end.

[0014] In one or more embodiments, the first end of the girder has a width that is less than a width of the second end.

[0015] Another object of the present application is to provide a high-speed automated rail-mounted crane, comprising the above-described automated rail-mounted crane gantry.

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

[0017] The above-described 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:

[0018] Figure 1 is a schematic view of the basic structure of a high-speed automated rail-mounted crane;

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

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

[0021] Figure 4 is a schematic view along the A-A, B-B, and C-C sections in FIG. Figure 3

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

[0023] is a schematic view along the D-D, E-E, and F-F sections in FIG. Figure 6 Figure 5 is a schematic view along the G direction of the first embodiment;

[0024] Figure 7A Figure 5 is a schematic view along the G direction of the second embodiment;

[0025] Figure 7B is a schematic view along the G direction of the second embodiment; Figure 5

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

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

[0028] Figure 10A This is the front view of the main beam;

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

[0030] Symbol marking explanation

[0031] 1. Main beam

[0032] 2 Rigid outriggers

[0033] 3 Flexible outriggers

[0034] 4 Auxiliary support components

[0035] 5. Lower crossbeam

[0036] 6. Tractor traveling mechanism

[0037] 7. Car System

[0038] 8 Flexible hinge

[0039] 9 High-voltage rooms

[0040] 10 Electrical Room

[0041] 25 longitudinal reinforcement

[0042] 26 partitions

[0043] 27 First District

[0044] 28 Second District

[0045] 101 First End

[0046] 102 Second End

[0047] 103. Arc Surface

[0048] 104 Inner surface

[0049] 105 Outer surface

[0050] 201 Waist type outer surface Detailed Implementation

[0051] The utility model will be further described in connection with specific embodiments and drawings, more details are set forth in the following description in order to fully understand the utility model, but the utility model can obviously be implemented in a plurality of other ways different from this description, and those skilled in the art can make similar generalization, deduction according to actual application condition without violating the connotation of the utility model, therefore the protection scope of the utility model should not be limited by the content of this specific embodiment.

[0052] It should be noted that these and other subsequent drawings are merely examples, not drawn in proportion, and should not be used as a limitation on the actual protection scope required by the utility model.

[0053] High-speed automatic cantilever-free rail crane is a key transport equipment in automatic wharf yard, and the speed of the trolley can reach 240-300m / min. From the running direction of the trolley, the whole machine structure is in the form of a door; from the running direction of the trolley, the whole machine is also in the form of a door or A. Since the box beam has the characteristics of easy manufacturing and assembly and excellent mechanical properties, the whole machine structure usually adopts the structure of box beam.

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

[0055] Figure 1 And Figure 2 The basic structure of the high-speed automatic rail crane is shown, and the x-y-z coordinate system is used to represent the orientation, the x direction represents the length direction, the z direction represents the width direction, and the y direction represents the height direction. The high-speed automatic rail crane includes a gantry M, a trolley running mechanism 6, a trolley system 7, a high-voltage room 9, an electrical room 10 and other components. The gantry is the supporting frame of the automatic rail crane, which provides a stable structure for the crane system. The trolley running mechanism 6 refers to the trolley part in the crane system responsible for moving along the gantry transversely, which is used to move the trolley system to the desired position. The trolley system 7 is one of the key components of the automatic rail crane, equipped with a motor, a drive wheel and a lifting hook, used for lifting and releasing containers.

[0056] Further, the gantry M includes a girder 1, rigid legs 2, flexible legs 3, and a lower crossbeam 5. The girder 1 and the lower crossbeam 5 are connected to the rigid legs 2 and the flexible legs 3 on the upper side and the lower side of the y direction respectively, and the rigid legs 2 and the flexible legs 3 jointly support the girder 1. The girder 1 is a double-girder structure. The bottom of the flexible leg 3 is welded with the lower crossbeam 5 as a whole, which can be welded after the flexible leg 3 is inserted into the lower crossbeam 5, or the end of the flexible leg can be directly welded on the upper surface of the lower crossbeam 5. The rigid leg 2 is connected to the girder 1 and the lower crossbeam 5 by a fixing mode including but not limited to welding.

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

[0058] As shown in Figure 3 and Figure 5 , a pair of rigid legs 2 support the girder 1 in parallel. In order to improve the connection strength, an auxiliary support 4 is arranged between the pair of rigid legs 2. A pair of flexible legs 3 support the girder 1 in parallel, and an auxiliary support 4 can also be arranged between the pair of flexible legs 3. In some embodiments, the auxiliary support 4 is in a Z-shaped structure. The Z-shaped support between the rigid legs 2 can be connected by a circular tube or other forms of tubes without limitation. For the structure in which the high-voltage room 9 is placed on the legs, the lower support rod of the Z-shaped support adopts a structure as shown in the cross-sectional view D-D of Figure 6 , so as to facilitate the placement of the high-voltage room. For the case where the high-voltage room is not placed in this position, the lower support rod can be a circular tube to be consistent with other support rods. In this way, the Z-shaped support directly welded between the two parallel legs has no other connecting pieces such as inserts, and has an aesthetic appearance and good fatigue performance.

[0059] The flexible leg 3 is a hollow circular tube structure. Further, preferably, the circular tube cross section of the flexible leg is designed as a compact cross section. Since local buckling of the compact cross section occurs after the material yield, the internal part of the circular tube cross section does not need to be provided with reinforcing ribs. Compared with the traditional box-type cross section leg, the longitudinal ribs and the partition plates are omitted, and the material, manufacturing and welding workload are simplified.

[0060] The rigid leg 2 is also a hollow structure, including a waist-shaped cross section. Figures 8-9The waist-shaped outer circumferential surface 201 of the rigid leg is shown, which comprises two straight line segments P and two curve segments S, and the curve segments S are connected with the straight line segments P 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, the inside of the rigid leg 2 is provided with longitudinal ribs 25 and partitions 26 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 girder connected with the rigid leg 2 is a circular arc surface 103, as shown in Figures 10A-10B The radius of the circular arc surface 103 is preferably consistent with the radius of the curve segment S of the waist-shaped cross section of the rigid leg 2, which can further ensure the smoothness of the external lines and further reduce the wind resistance.

[0062] Continuing to refer to Figures 10A-10B In some embodiments, the girder 1 adopts a variable cross-section configuration, and in the z direction, the width of the first end 101 is smaller than that of the second end 102, that is, the girder 1 has a shorter beam width at the position connected with the flexible leg 3, which can further save the structural weight and improve the stress condition of the flexible hinge. Specifically, the girder 1 comprises a pair of parallel beams, and a variable cross-section transition configuration is arranged on the outer side surface 105 of the beam to achieve a narrower beam width. The inner side surface 104 of the beam remains unchanged in a flat configuration.

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

[0064] In order to ensure the support stiffness and achieve the purpose of light weight, in the height direction, the cross-sectional length of the rigid leg 2 close to the girder side is greater than that close to the lower crossbeam side, that is, the waist-shaped rigid leg 2 has a larger upper cross-sectional length and a smaller lower cross-sectional length in the y direction. As shown in Figures 8-9 In the entire height range, the curve segment S of the inner and outer circumferential cross sections of the waist-shaped leg remains unchanged, and only the straight line segment P is shortened. Based on this, from the front and rear sides along the z direction, the entire rigid leg comprises two semicircular tubes located in the x direction and trapezoidal panels located on both sides in the z direction, and the straight line segment P of the rigid leg 2 gradually shortens in the x direction from top to bottom, the distance of the straight line segment P in the z direction remains unchanged, and the size of the curve segment S remains unchanged.

[0065] As shown in Figure 7A The cross-sectional length of the rigid leg 2 in the x direction gradually decreases along the z direction from the girder side to the lower crossbeam side, and the curve segment of the waist-shaped cross section uniformly transitions from top to bottom, and the straight line segment gradually shortens. It can also be designed in the manner that a segment close to the girder has an equal length, and then gradually narrows downward, as shown in Figure 7BAs shown, the rigid leg 2 comprises a first region 27 and a second region 28 from the girder side to the lower crossbeam side, the first region 27 is a leg equal-length structure, the length of the waist-shaped cross section in the x direction is equal, and the second region 28 is a leg tapering structure, the length of the waist-shaped cross section gradually decreases from the girder side to the lower crossbeam side. The combination of the leg equal-length structure and the leg tapering structure further improves the rigidity of the structure in the trolley direction.

[0066] The track crane gantry has the following advantages:

[0067] (1) The gantry structure adopts rigid-flexible leg structure, the rigid leg adopts waist-shaped cross section design, and the flexible leg adopts circular tube structure, and the waist-shaped rigid leg and the circular tube flexible leg effectively reduce the wind resistance due to the waist-shaped streamline appearance;

[0068] (2) The girder is arc-shaped at the end of the rigid leg side, which is consistent with the waist-shaped outer contour of the rigid leg, so as to obtain the effect of coordinated appearance and reduced wind resistance;

[0069] (3) The auxiliary support component in the shape of Z-shaped support can significantly improve the rigidity in the direction of the trolley;

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

[0071] (5) The cross section of the girder and the flexible leg at the joint is narrow, which can save material cost and improve the stress condition of the flexible hinge, facilitating the design of the flexible joint.

[0072] In combination with the introduction of the track crane gantry, it can also be understood that a high-speed automatic track crane comprising the gantry has excellent mechanical properties and economic benefits.

[0073] 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, and the above words have no special meaning if not otherwise stated, so it cannot be understood as a limitation on the protection scope of the present application.

[0074] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each part itself.

[0075] Also, certain terminology has been used in the foregoing description for the purpose of reference only. The terms "one embodiment", "an embodiment”, and / or "some embodiments” mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the use of the terms "in one embodiment”, "in an embodiment”, and / or "in some embodiments” does not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0076] 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 modifications, equivalent changes and modifications of the above embodiment according to the technical essence of the utility model, all fall into the protection scope defined in the utility model claim.

Claims

1. A track-mounted gantry crane, characterized in that, It includes a main beam, a lower crossbeam, rigid legs, and flexible legs. The main beam and the lower crossbeam are connected to the rigid legs and the flexible legs on their upper and lower sides, respectively. The flexible legs are connected to the first end of the main beam via flexible hinges, and the rigid legs are fixedly connected to the second end of the main beam. The rigid support leg is a hollow structure, including a waist-shaped cross-section; and The flexible support leg is a hollow circular tube structure.

2. The track-mounted gantry crane as described in 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 section.

3. The track-mounted gantry crane as described in claim 1, characterized in that, The rigid support leg is provided with longitudinal ribs and / or partitions inside.

4. The track-mounted gantry crane as described in claim 1, characterized in that, The length of the waist-shaped section of the rigid support leg near the main beam is greater than the length of the section near the lower crossbeam.

5. The track-mounted gantry crane as described in claim 4, characterized in that, The length of the waist-shaped section of the rigid support gradually decreases from one side of the main beam to the other side of the lower crossbeam, or The rigid support leg includes a first region and a second region in sequence from the main beam to the lower crossbeam. The waist-shaped cross-sectional length of the first region is equal, and the waist-shaped cross-sectional length of the second region gradually decreases from one side of the main beam to the other side of the lower crossbeam.

6. The track-mounted gantry crane as described in claim 1, characterized in that, The main beam is a double main beam structure.

7. The track-mounted gantry crane as described in claim 1, characterized in that, A pair of rigid outriggers support the main beam in parallel, and a pair of flexible outriggers support the main beam in parallel. The gantry also includes auxiliary supports connecting the pair of said rigid legs, and / or An auxiliary support component that connects a pair of flexible outriggers.

8. The track-mounted gantry crane as described in claim 7, characterized in that, The auxiliary support component has a Z-shaped structure.

9. The track-mounted gantry crane as described in claim 1, characterized in that, The width of the first end of the beam is smaller than the width of the second end.

10. A high-speed automated rail-mounted crane, characterized in that, Including the rail-mounted gantry crane as described in any one of claims 1-9.

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