High-strength connecting node of crane beam

Abstract

The utility model discloses a crane beam high-strength type connecting node, which relates to the technical field of crane beam connecting structures, is used for fixedly connecting a crane beam to a bracket, and comprises a beam end plate fixedly welded on the end face of the crane beam, and the beam end plate downwards extends out of a lower flange of the crane beam. A bearing face of the bracket is fixedly provided with a base plate used for abutting against the lower end of the beam end plate, an end plate connecting vertical plate is fixedly welded to the base plate, the end plate connecting vertical plate is fixedly connected with the beam end plate, and a base plate fixing structure is arranged between the base plate and the bracket. The base plate is directly and fixedly connected with the beam end plate through the end plate connecting vertical plate, good welding connection is easily formed between the base plate and the end plate connecting vertical plate, the connecting strength is high, the dynamic load bearing capacity is high, and the reliability and safety in the using process are improved.

Description

Technical Field

[0001] This utility model relates to the field of crane beam connection structure technology, and in particular to a high-strength connection node for crane beams. Background Technology

[0002] Factory cranes use rails mounted on crane beams at both ends for guidance. The crane beams are multi-sectioned, with each section connected to a bracket at its end to form a continuous beam. Therefore, the precision and strength of the connection between the crane beam and the bracket are crucial factors affecting the normal and reliable operation of the crane. The traditional connection structure between the crane beam and the bracket is as follows... Figures 7 to 9 As shown, the crane beam is supported on a pad on the corbel by its own beam end plate. The pad is fixedly welded to the corbel as a structure to adjust connection deviation and relieve stress concentration. The beam end plate and the pad are not connected. The lower flange connecting plate is welded to the pad. After inserting a clamp between the lower flange connecting plate and the lower flange of the corresponding side crane beam, they are bolted together. The beam end plates of adjacent crane beams are clamped together by inserting clamps and bolted together. The upper flange of the end of the crane beam is connected to the column connector through a tie rod.

[0003] In the construction of the above-mentioned traditional connection structure, the common practice is to first fix the base plate to the corbel, then stand the beam end plates of the two crane beams against the base plate, then bolt the lower flange connecting plate to the lower flange of the corresponding crane beam, and finally weld the lower flange connecting plate to the base plate. For example... Figure 7 As shown, the space between the lower wing connecting plate and the crane beam, as well as between it and the pad plate, is relatively small, making welding difficult and ensuring weld quality challenging. Ultimately, the main connection welds are located on both sides of the overlap length between the lower wing connecting plate and the pad plate. Furthermore, the crane beam is frequently subjected to dynamic loads from the crane during subsequent use, such as lateral impact loads from crane braking, vertical loads during lifting, and varying vertical loads during subsequent movement. Under long-term dynamic loads, the welded connection between the lower wing connecting plate and the pad plate frequently experiences weld breakage, posing a significant safety hazard. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a high-strength connection node for crane beams that has high connection strength, strong dynamic load bearing capacity, and is conducive to improving the reliability and safety of use.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a high-strength connection node for crane beams, used to fix crane beams to brackets, including a beam end plate fixedly welded to the end face of the crane beam, the beam end plate extending downwards from the lower flange of the crane beam, a pad plate fixedly provided on the supporting surface of the bracket for the lower end of the beam end plate to abut against, an end plate connecting vertical plate fixedly welded to the pad plate, the end plate connecting vertical plate being fixedly connected to the beam end plate, and a pad plate fixing structure being provided between the pad plate and the bracket.

[0006] As a preferred technical solution, the end plate connecting upright is located on the end side of the beam end plate, and the end plate connecting upright is bolted to the beam end plate.

[0007] As a preferred technical solution, a clamping plate is inserted between the end plate connecting the vertical plate and the beam end plate, and the clamping plate is bolted together with the end plate connecting the vertical plate and the beam end plate.

[0008] As a preferred technical solution, the pad is provided with a vertical plate connection port corresponding to the end plate connecting vertical plate, and the lower end of the end plate connecting vertical plate extends into the vertical plate connection port.

[0009] As a preferred technical solution, the two crane beams are connected to the same bracket, the end plate connecting plate is located between the beam end plates of the two crane beams, and the end plate connecting plate is bolted to both beam end plates.

[0010] As a preferred technical solution, the pad fixing structure includes a pad weld between the periphery of the pad and the bracket.

[0011] As a preferred technical solution, the beam end plate also serves as the end plate connecting plate.

[0012] As a preferred technical solution, an end plate reinforcement plate is welded between the lower flange and the pad.

[0013] As a preferred technical solution, the two crane beams are connected to the same bracket, and the pad includes a sub-pad corresponding to the end plates of the two beams respectively. Each sub-pad is provided with a pad fixing structure between itself and the bracket; the two beam end plates are bolted together.

[0014] As a preferred technical solution, the pad fixing structure includes pad fixing bolts between the pad and the bracket.

[0015] Due to the adoption of the above technical solution, a high-strength connection node for crane beams, used to fix the crane beam to the bracket, includes a beam end plate fixedly welded to the end face of the crane beam. The beam end plate extends downwards from the lower flange of the crane beam. A pad plate is fixedly provided on the supporting surface of the bracket for the lower end of the beam end plate to abut against. An end plate connecting vertical plate is fixedly welded to the pad plate. The end plate connecting vertical plate is fixedly connected to the beam end plate. A pad plate fixing structure is provided between the pad plate and the bracket. In this utility model, the pad plate is directly fixedly connected to the beam end plate through the end plate connecting vertical plate. The pad plate and the end plate connecting vertical plate can easily form a good welded connection, resulting in high connection strength, strong dynamic load bearing capacity, and improved reliability and safety during use. Attached Figure Description

[0016] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0017] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0018] Figure 2 This is a structural diagram of the welded assembly of the end plate connecting the vertical plate and the pad plate according to one embodiment of this utility model;

[0019] Figure 3 yes Figure 2 The right view;

[0020] Figure 4 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0021] Figure 5 yes Figure 4 Schematic diagram of the structure of AA;

[0022] Figure 6 This is a structural schematic diagram of a beam end connection node according to the present invention;

[0023] Figure 7 This is a structural diagram of the existing crane beam connection structure;

[0024] Figure 8 yes Figure 7 Schematic diagram of the structure of BB;

[0025] Figure 9 yes Figure 7 A top-view structural diagram.

[0026] In the diagram: 1-Column connector; 2-Corner; 21-Diagonal support; 3-Crane beam; 31-Upper flange; 32-Lower flange; 33-Web plate; 34-Beam end plate; 35-End plate reinforcement plate; 4-Padded plate; 41-Divided pad plate; 42-Vertical plate connection port; 5-End plate connecting vertical plate; 6-Clamping plate; 7-Tie member; 8-Padded plate fixing structure; 9-Lower flange connecting plate. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0028] like Figures 1 to 5 As shown, a high-strength connection node for the crane beam 3 is used to fix the crane beam 3 to the bracket 2. Conventionally, the crane beam 3 includes an upper flange 31, a lower flange 32, and a web 33 between the upper flange 31 and the lower flange 32. The connection node includes a beam end plate 34 fixedly welded to the end face of the crane beam 3. The beam end plate 34 extends downward from the lower flange 32 of the crane beam 3. A pad 4 is fixedly provided on the supporting surface of the bracket 2 for the lower end of the beam end plate 34 to abut against. The beam end plate 34 is welded to the end face of the crane beam 3 to form a high-rigidity structure at the end. The pad 4, with its optional thickness, adapts to the height deviation at the end of the crane beam 3, serving an adjustment function. Simultaneously, by abutting against the beam end plate 34, stress concentration is prevented at the bracket 2, thus reducing structural deformation and even damage to the crane beam 3 and the bracket 2. The above structural principles are easily understood by those skilled in the art and will not be elaborated further here.

[0029] An end plate connecting vertical plate 5 is fixedly welded to the pad 4. The end plate connecting vertical plate 5 is fixedly connected to the beam end plate 34. A pad fixing structure 8 is provided between the pad 4 and the corbel 2. In this invention, the pad 4 is directly fixedly connected to the beam end plate 34 via the end plate connecting vertical plate 5. The pad 4 and the end plate connecting vertical plate 5 can easily form a good welded connection with high connection strength and strong dynamic load bearing capacity, which helps to improve the reliability and safety during use.

[0030] The following two examples further illustrate the structural principle.

[0031] Example 1: As Figure 1 , Figure 2 and Figure 3As shown, the end plate connecting upright 5 is located on the end side of the beam end plate 34, and the end plate connecting upright 5 is bolted to the beam end plate 34. During construction, the end plate connecting upright 5 is first welded to the pad 4, and then this welded assembly is fixed by fixing the pad 4 to the bracket 2. After that, the lower end of the beam end plate 34 is abutted against the pad 4, and then the beam end plate 34 is bolted to the end plate connecting upright 5, thus completing the connection of the crane beam 3 to the bracket 2. The connection node structure is simplified, and there is no need to connect the lower flange 32 to the pad 4 or the bracket, making the connection and installation convenient. Also, because there is no need for bolts or other connections between the lower flange 32 and the pad 4 or the bracket, this embodiment can achieve the priority welding of the end plate connecting upright 5 and the pad 4. This priority welding is not affected by space, which is more conducive to ensuring welding quality. After the connection is completed, the end of the crane beam 3 and the pad 4 form an approximately box-shaped structure, which exhibits strong rigidity. With the help of the fixed connection of the pad 4 on the bracket 2, the crane beam 3 and the bracket 2 exhibit high connection strength and have good bearing capacity for various dynamic loads. Even for horizontal loads generated by crane braking, the good welding quality between the end plate connecting the vertical plate 5 and the pad 4 can produce ideal bearing capacity, and it is not easy for the weld to break, which helps to improve the reliability and safety of use.

[0032] In this embodiment, the pad fixing structure 8 includes a pad weld between the periphery of the pad 4 and the bracket 2. Of course, bolt connection or bolt-weld combination connection are both acceptable.

[0033] Preferably, a clamping plate 6 is inserted between the end plate connecting upright 5 and the beam end plate 34, and the clamping plate 6 is bolted together with the end plate connecting upright 5 and the beam end plate 34. The clamping plate 6 is used to adapt to the spacing deviation between the end plate connecting upright 5 and the beam end plate 34 to ensure the rigidity of the structure after connection and achieve a better force transmission effect. The structure and function of the clamping plate 6 are easily understood by those skilled in the art based on existing technology, and will not be elaborated here. In this embodiment, with the clamping plate 6 inserted, a more rigid box-shaped structure is actually formed between the end of the crane beam 3 and the pad plate 4, which can further promote the improvement of connection strength and generate a stronger bearing capacity for dynamic loads during use, especially vertical loads.

[0034] Preferably, the pad 4 is provided with a vertical plate connection port 42 corresponding to the end plate connecting vertical plate 5, and the lower end of the end plate connecting vertical plate 5 extends into the vertical plate connection port 42. With this structural arrangement, there is also a plate overlap between the end plate connecting vertical plate 5 and the pad 4. This overlap can generate a stronger bearing capacity for horizontal loads during use, reducing the stress on the weld between the end plate connecting vertical plate 5 and the pad 4. Therefore, while improving the dynamic load bearing capacity, especially the horizontal load bearing capacity, it can further reduce the occurrence of weld breakage.

[0035] This embodiment is primarily applicable to the butt joint connection node of two crane beams 3, where the two crane beams 3 are connected to the same bracket 2. Therefore, the end plate connecting upright 5 is located between the beam end plates 34 of the two crane beams 3, and the end plate connecting upright 5 is bolted to both beam end plates 34, further simplifying the connection node structure. In this application scenario, the pad 4 can include separate pads 41 corresponding to the two beam end plates 34, with the interval between the two separate pads 41 forming the upright connection port 42. This separate arrangement of the pads 4 simplifies the manufacturing process, and the different thicknesses of the separate pads 41 at each beam end plate 34 can accommodate height deviations, improving the flexibility of this embodiment.

[0036] Of course, in addition to the above-mentioned connection, a tie member 7 can also be added at the upper flange 31 of the crane beam 3 to connect to the column connector 1 to improve the eccentric load bearing capacity. This tie method is a well-known technology that can be known by those skilled in the art, and will not be described in detail here.

[0037] In this embodiment, the end plate connecting vertical plate 5 is directly welded to the pad plate 4 and then directly bolted to the beam end plate 34. The end of the crane beam 3 can directly form a high-strength rigid structure with the pad plate 4. Since no additional connection is needed at the lower flange or other locations, the end plate connecting vertical plate 5 achieves pre-welding with the pad plate 4, ensuring weld quality. Therefore, after connection, this embodiment exhibits strong resistance to various dynamic loads. Furthermore, this embodiment has a simple structure and is convenient to use on both steel and concrete corbels 2.

[0038] Example 2: Figure 4 and Figure 5As shown, in this embodiment, the beam end plate 34 also serves as the connecting plate 5, meaning the beam end plate 34 and the pad plate 4 are directly welded together. In this structure, a pad plate 4 of appropriate thickness is selected based on the height deviation of the crane beam 3 and welded to the lower end of the beam end plate 34. The pad plate 4 is then fixed to the bracket 2, thus achieving a connection between the crane beam 3 and the bracket 2. This simplifies the connection structure and facilitates installation. Since no other bolts are needed to connect the lower flange 32 of the crane beam 3 to the pad plate 4 or the bracket 2, the beam end plate 34 and the pad plate 4 can be pre-welded, ensuring welding quality regardless of space constraints. Consequently, the crane beam 3 and the bracket 2 form a high connection strength, exhibiting good resistance to various dynamic loads and reducing the likelihood of weld breakage, thus improving reliability and safety during use. Furthermore, this embodiment has a simple structure and is easily applicable to both steel and concrete brackets 2. In addition, in this embodiment, a tie rod 7 can also be added to the upper flange 31 of the crane beam 3 to connect to the column connector 1 to improve the off-center load capacity.

[0039] In this embodiment, the pad fixing structure 8 includes pad fixing bolts between the pad 4 and the bracket 2. Of course, it is also possible to use a weld between the periphery of the pad 4 and the bracket 2, or a bolt-weld combination fixing method.

[0040] Preferably, an end plate reinforcing plate 35 is welded between the lower flange 32 and the pad 4 to enhance the welded connection strength between the beam end plate 34 and the pad 4. The end plate reinforcing plate 35 can be a support plate parallel to the beam end plate 34 or a stiffening plate perpendicular to the beam end plate 34; there is no limitation here. This embodiment only illustrates the form of a support plate parallel to the beam end plate 34. Of course, the end plate reinforcing plate 35 is also pre-welded.

[0041] This embodiment is also primarily applicable to the scenario where two crane beams 3 are connected to the same bracket 2. The pad 4 includes a sub-pad 41 corresponding to the two beam end plates 34 respectively. Each sub-pad 41 is provided with a pad fixing structure 8 between itself and the bracket 2, so that the two crane beams 3 can be connected to the bracket 2 respectively. The beam end plates 34 can also be easily adapted to their height deviation by using sub-pads 41 of different thicknesses, which helps to improve the flexibility of this embodiment.

[0042] In the above application scenario, the two beam end plates 34 are bolted together to form an integral rigid structure between the ends of the two crane beams 3 and the pad plate 4, further improving the connection strength and the ability to withstand dynamic loads. Preferably, a clamping plate 6 is inserted between the two beam end plates 34 to accommodate the spacing deviation between the two beam end plates 34 and ensure the force transmission effect. In this embodiment, with the clamping plate 6 inserted, the ends of the two crane beams 3 and the pad plate 4 also actually form a more rigid box-shaped structure, which can further promote the improvement of connection strength and generate a stronger ability to withstand dynamic loads during use, whether lateral or vertical, thus improving the reliability and safety of use.

[0043] Both of the above embodiments are primarily applicable to the butt joint connection of two crane beams 3 to improve connection strength, enhance dynamic load bearing capacity, and ensure welding quality. For the end connection nodes of the entire beam formed by several crane beams 3, the connection method with the corbel 2 in the above embodiments can be referenced. In addition, this utility model also provides another type of end connection node connection, such as... Figure 6 As shown, after the end of the entire beam is connected, an inclined support 21 is used to reinforce the support between the corbel 2 and the lower flange 32 of the crane beam 3. The inclined support 21 can form a high-strength connection together with the rigid connection of the end plate to the vertical plate 5. Of course, based on the crane beam 3 at the very end of the entire beam, the other end has formed a high-strength connection due to the butt connection, so the end of the entire beam can also be simply rested on the pad 4.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-strength connection node for crane beams, used to fix crane beams to a bracket, comprising a beam end plate fixedly welded to the end face of the crane beam, the beam end plate extending downwards beyond the lower flange of the crane beam, characterized in that: A pad is fixedly provided on the supporting surface of the corbel for the lower end of the beam end plate to abut against. An end plate connecting vertical plate is fixedly welded to the pad, and the end plate connecting vertical plate is fixedly connected to the beam end plate. A pad fixing structure is provided between the pad and the corbel.

2. The high-strength connection node for crane beams as described in claim 1, characterized in that: The end plate connecting upright is located on the end side of the beam end plate, and the end plate connecting upright is bolted to the beam end plate.

3. The high-strength connection node for crane beams as described in claim 2, characterized in that: A clamping plate is inserted between the end plate connecting the vertical plate and the beam end plate, and the clamping plate is bolted together with the end plate connecting the vertical plate and the beam end plate.

4. The high-strength connection node for crane beams as described in claim 2, characterized in that: The pad is provided with a vertical plate connection port corresponding to the end plate connecting vertical plate, and the lower end of the end plate connecting vertical plate extends into the vertical plate connection port.

5. The high-strength connection node for crane beams as described in claim 2, characterized in that: The two crane beams are connected to the same bracket, and the end plate connecting upright is located between the beam end plates of the two crane beams, and the end plate connecting upright is bolted to both beam end plates.

6. The high-strength connection node for crane beams as described in claim 1, characterized in that: The pad fixing structure includes a pad weld between the periphery of the pad and the bracket.

7. The high-strength connection node for crane beams as described in claim 1, characterized in that: The beam end plate also serves as the end plate connecting plate.

8. The high-strength connection node for crane beams as described in claim 7, characterized in that: An end plate reinforcement plate is welded between the lower flange and the pad.

9. The high-strength connection node for crane beams as described in claim 7, characterized in that: The two crane beams are connected to the same bracket. The pad includes a sub-pad corresponding to the end plates of the two beams respectively. Each sub-pad is provided with a pad fixing structure between itself and the bracket. The two beam end plates are bolted together.

10. The high-strength connection node for crane beams as described in claim 1, characterized in that: The pad fixing structure includes pad fixing bolts between the pad and the bracket.

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