Lifting girder quay crane anti-shearing protection device and quay crane

Abstract

According to the lifting girder quay crane anti-shear protection device and the quay crane, the anti-shear protection device is installed on a cross beam flange plate and a stand column flange plate which are attached to each other, the stand column flange plate comprises a first through hole, the first through hole comprises a long shaft, the cross beam flange plate comprises a second through hole, and the anti-shear protection device comprises an anti-shear block, a pair of baffles and a connecting assembly. The anti-shearing block extends into the first through hole and the second through hole at the same time; the pair of baffles is arranged on the two sides of the axis of the anti-shear block. The connecting assembly penetrates through the baffle and the anti-shear block to fasten the baffle and the anti-shear block. According to the anti-shearing protection device for the lifting girder quay crane, the anti-shearing block and the baffle structure are additionally arranged, the anti-shearing block plays a role in supporting the cross beam flange plate, the baffle plays a role in fixing the anti-shearing block, even if a connecting assembly fails, the whole formed by the anti-shearing block and the baffle can continue to effectively support the cross beam flange plate, and therefore the anti-shearing effect is good. And shearing force transmitted by the flange plate can be received, and the safety risk is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of quay cranes, and more specifically to the field of girder connection structures. Background Technology

[0002] A quay crane, also known as a quay container crane, is a piece of equipment used to load and unload containers from container ships at the quayside. Quay crane manufacturers deliver quay cranes as complete units, which offers several advantages over transporting parts to the terminal for assembly: transporting complete units fully utilizes the manufacturer's resources—sites, technology, personnel, and equipment—to complete the installation and commissioning of the quay crane. All issues can be resolved at the manufacturer's location, reducing the manufacturing cycle; and once the commissioned quay crane is delivered to the terminal, it can be put into use immediately, minimizing the time spent on assembly or commissioning at the user's terminal and ensuring timely delivery. However, transporting quay cranes as complete units typically involves waterways, which may encounter obstacles with height restrictions, such as bridges and cables, affecting transport.

[0003] Currently, there is a type of liftable quay crane that can solve the problem of overall height during transportation. This means that the overall height can be lowered during transport to pass through obstacles, and then restored to its original height upon arrival at the user's dock for normal operation. For example, Chinese patent CN110342406B discloses a quay crane structure in which the landside upper crossbeam is detachably connected to the first and second landside columns, and the seaside upper crossbeam is also detachably connected to the first and second seaside columns. Specifically, a pair of flanges are detachably connected together with bolts to achieve a disassembly structure.

[0004] However, the inventors discovered that this bolted flange structure, which enables detachable connections, is prone to safety issues when the bolts fail, and this problem urgently needs to be addressed. Summary of the Invention

[0005] One objective of this invention is to provide a shear protection device for a lifting girder quay bridge, which can effectively solve safety problems caused by bolt failure.

[0006] To achieve the above objectives, a shear protection device for a lifting girder quay crane is installed on mating crossbeam flange plates and column flange plates. The column flange plate includes a first through hole with a long axis, and the crossbeam flange plate includes a second through hole. The shear protection device includes a shear block, a pair of baffles, and a connecting assembly. The shear block extends into both the first and second through holes. The pair of baffles are located on both sides of the shear block along its own axis. The connecting assembly passes through the baffles and the shear block to secure them together.

[0007] In one or more embodiments, the upper edge of the second through hole is provided with an extension plate, and the baffle located on the side of the crossbeam flange is provided with a latch that engages with the extension plate.

[0008] In one or more embodiments, the baffle located on the side of the column flange plate is provided with an upper latch and a lower latch for engaging with the upper and lower edges of the first through hole.

[0009] In one or more embodiments, the long axis extends in the sea-land direction of the quay bridge.

[0010] In one or more embodiments, the column flange plate further includes a third through hole located below the first through hole, and a second through hole of the column flange plate that is attached to the beam flange plate simultaneously covers the third through hole and the first through hole.

[0011] In one or more embodiments, the length of the shear-resistant block is equal to the length of the first through hole, the height of the shear-resistant block is equal to the height of the first through hole, and the width of the shear-resistant block is less than the sum of the widths of the first through hole and the second through hole.

[0012] In one or more embodiments, the connecting assembly includes a screw and a nut, and the shear block and the baffle are provided with connecting holes through which the screw passes.

[0013] In one or more embodiments, a plurality of the connecting holes are distributed along the extension direction of the long axis on the shear block and the baffle.

[0014] In one or more embodiments, the first through hole is a racetrack-shaped hole, a waist-shaped hole, or an elliptical hole.

[0015] Another object of the present invention is to provide a quay bridge including the above-mentioned shear protection device for a lifting girder quay bridge.

[0016] The aforementioned shear protection device for the lifting girder quay bridge is equipped with shear blocks and baffle structures. While using traditional connectors, the shear blocks support the crossbeam flanges, and the baffles fix the shear blocks. Even if the connectors fail, the whole structure formed by the shear blocks and baffles can continue to effectively support the crossbeam flanges and receive the shear force transmitted by the flanges, effectively reducing safety risks. Attached Figure Description

[0017] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, wherein: Figure 1 This is a side view of the overall structure of the quay crane; Figure 2 This is a schematic diagram of the connection method between traditional beam flange plates and column flange plates; Figure 3 This is a schematic diagram of one embodiment of the crossbeam flange plate; Figure 4This is a schematic diagram of one embodiment of the column flange plate; Figure 5 This is a schematic diagram of the fitted beam flange and column flange; Figure 6 yes Figure 5 Cross-sectional view along the AA direction; Figure 7 This is a schematic diagram of the first baffle. Figure 8 This is a schematic diagram of the second baffle; Figure 9 This is a schematic diagram of a shear block.

[0018] Explanation of reference numerals in the attached figures

[0019] 1. Upper crossbeam

[0020] 2 pillars

[0021] 3 bolts

[0022] 4. Shear protection device for quay cranes

[0023] 41 Shear Block

[0024] 42 baffles

[0025] 43 Connecting components

[0026] 101 Beam Flange Plate

[0027] 122 Second Through Hole

[0028] 201 Column Flange Plate

[0029] 211 First Through Hole

[0030] 213 Third Through Hole

[0031] 421 First baffle

[0032] 422 Second baffle

[0033] 431 Screw

[0034] 432 Nut

[0035] 433 Connecting hole Detailed Implementation

[0036] The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0037] It should be noted that these and other accompanying drawings are merely examples and are not drawn to scale, and should not be construed as limiting the scope of protection of the present invention.

[0038] Figure 1 The side view of the quay crane is shown, with the upper crossbeam 1 connected to the column 2 via a pair of connecting flanges A.

[0039] Figure 2 Show Figure 1 The enlarged view at point B shows the connecting parts of the traditional flange disassembly structure. After the crossbeam flange plate 101 of the upper crossbeam 1 and the column flange plate 201 of the column 2 are fitted and aligned, the bolt holes on the two flanges are aligned and connected by bolts 3 to fix the two flange parts.

[0040] As mentioned above, this structure is prone to failure when the connectors fail.

[0041] Figure 5 and Figure 6 The shear protection device for solving this problem is shown, which is installed on the mating beam flange 101 and column flange 201.

[0042] Column flange plate 201 Figure 4 As shown, the flange includes a first through hole 211, which has a major axis S. The first through hole 211 can be, but is not limited to, a racetrack-shaped hole, a waist-shaped hole, or an elliptical hole; this hole shape with a major axis enhances shear resistance. The column flange 201 also includes a third through hole 213, located below the first through hole 211, with its lower opening changed to a pear shape to facilitate smoother force transmission. There is a certain distance between the third through hole 213 and the first through hole 211 to ensure the structural strength of the shear-resistant flange. The major axis S extends in the direction of the quay crane's onshore / seashore side.

[0043] 101 crossbeam flange Figure 3 As shown, it includes a second through hole 122. The upper edge of the second through hole 122 is straight to facilitate fitting with the shear block. The two sides of the straight edge are rounded to reduce stress concentration. The lower opening is pear-shaped to make the force transmission of the plate smoother. The second through hole 122 can simultaneously cover the third through hole 213 and the first through hole 211, as shown. Figure 5 As shown.

[0044] Figure 6 Show Figure 5 The cross-sectional view along the AA direction also shows the basic structure of the quay crane shear protection device 4, which includes shear blocks 41, a pair of baffles 42 and connecting components 43.

[0045] The shear block 41 extends into the first through hole 211 and the second through hole 122 simultaneously. A pair of baffles 42 are provided on both sides of the shear block 41 located on its own axis M. The baffle 421 is closer to the column flange plate 201, and the baffle 422 is closer to the beam flange plate 101.

[0046] The shear block 41 extends into both the first through hole 211 and the second through hole 122. Since the area of ​​the second through hole 122 is larger, the crossbeam flange 101 is hung on the shear block 41. A pair of baffles 42 and a connecting assembly 43 serve to fix the shear block 41. The connecting assembly 43 includes a screw 431 and a nut 432. The screw 431 passes through the connecting holes 433 on the shear block and the baffles, and the nuts are tightened on both sides to fix the shear block 41 and the baffles 42.

[0047] Understandable, Figure 6 The installation structure of the quay crane shear protection device 4 located on one side of the quay crane is shown. In the installation structure of the quay crane shear protection device 4 located on the other side of the quay crane, the positions of the beam flange plate 101 and the column flange plate 201 are opposite.

[0048] In some embodiments, such as Figure 3 As shown, the upper edge of the second through hole 122 is provided with an extension plate 124, and the second baffle 422 located on the side of the crossbeam flange plate is provided with a first latch 423 that engages with the extension plate 124, such as... Figure 6 and Figure 7 As shown, this bayonet structure increases the number of fixing points on the clamping plate, thereby further limiting the movement of the shear block 41. The extension plate 124 has rounded sides to reduce stress concentration.

[0049] Figure 7 The front view and side view of the second baffle 422 are shown respectively. Multiple connecting holes 433 that cooperate with the screw 431 are distributed along the long axis S on the second baffle 422. Each connecting hole 433 cooperates with a set of connecting components 43.

[0050] Continue to refer to Figure 8 The front and side views of the first stop 421 shown show that multiple connecting holes 433 are distributed along the long axis S, and each connecting hole 433 cooperates with a set of connecting components 43. In addition, the first stop 421 is provided with an upper latch 424 and a lower latch 425 for engaging with the upper and lower edges of the first through hole 211, respectively.

[0051] Figure 9 The front and side views of the shear-resistant block 41 are shown. The length of the shear-resistant block 41 is equal to the length of the first through hole 211 along the major axis S, i.e., the left-right direction in the left view. The height of the shear-resistant block 41, i.e., the vertical direction in the left view, is equal to the height of the first through hole 211. The width of the shear-resistant block 41 is less than the sum of the widths of the first through hole 211 and the second through hole 122, as shown below. Figure 6As shown, the width is Figure 6 The left and right directions shown are also... Figure 9 As shown in the middle right figure, after the anti-shear block 41 is embedded in the first through hole 211 and the second through hole 122, the first baffle 421 and the second baffle 422 are also partially embedded in the first through hole 211 and the second through hole 122 to enhance the connection stability of the three.

[0052] In this way, the first stop 421 and the second baffle 422 of the locking structure can initially fix the shear block 41 and prevent it from moving. At the same time, the connecting component 43 ensures that the connection of the three is stable. Even if the screw 431 fails, the whole formed by the shear block and the baffle can remain stable, ensuring that the shear block does not loosen, continues to provide effective support for the crossbeam flange plate, and can receive the shear force transmitted by the flange plate, effectively reducing safety risks.

[0053] It should be noted that the use of terms such as "first" and "second" to define the components in the above content is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0054] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0055] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0056] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any variations and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the invention, fall within the protection scope defined by the claims of the present invention.

Claims

1. A shear protection device for a lifting girder quay crane, installed on mating crossbeam flange plates and column flange plates, wherein the column flange plate includes a first through hole having a long axis, and the crossbeam flange plate includes a second through hole, characterized in that... The shear protection device includes: The shear block extends into both the first through hole and the second through hole; A pair of baffles are disposed on both sides of the shear block located on its own axis; and A connecting component extends through the baffle and the shear block to secure the baffle and the shear block.

2. The shear protection device for lifting girder quay bridge as described in claim 1, characterized in that, The upper edge of the second through hole is provided with an extension plate, and the baffle located on the side of the crossbeam flange is provided with a latch that engages with the extension plate.

3. The shear protection device for lifting girder quay bridge as described in claim 1, characterized in that, The baffle located on the side of the column flange plate is provided with an upper latch and a lower latch for engaging with the upper and lower edges of the first through hole.

4. The shear protection device for lifting girder quay bridge as described in claim 1, characterized in that, The long axis extends in the sea-land direction of the quay bridge.

5. The shear protection device for lifting girder quay bridge as described in claim 1, characterized in that, The column flange plate also includes a third through hole, which is located below the first through hole. The second through hole of the column flange plate, which is attached to the beam flange plate, covers both the third through hole and the first through hole.

6. The shear protection device for lifting girder quay bridge as described in claim 1, characterized in that, The length of the shear-resistant block is equal to the length of the first through hole, the height of the shear-resistant block is equal to the height of the first through hole, and the width of the shear-resistant block is less than the sum of the widths of the first through hole and the second through hole.

7. The shear protection device for lifting girder quay bridge as described in claim 1, characterized in that, The connecting assembly includes a screw and a nut, and the shear block and the baffle are provided with connecting holes for the screw to pass through.

8. The shear protection device for lifting girder quay bridge as described in claim 7, characterized in that, The plurality of connecting holes are distributed along the extension direction of the long axis on the shear block and the baffle.

9. The shear protection device for lifting girder quay bridge as described in claim 1, characterized in that, The first through hole is a racetrack-shaped hole, a waist-shaped hole, or an elliptical hole.

10. A quay crane, characterized in that, Including the shear protection device for lifting girder quay bridge as described in any one of claims 1-9.

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