Crane truss and plant structure

Abstract

The present invention provides a crane truss and a factory building structure, wherein the crane truss comprises: an upper chord, a lower chord and a diagonal web member, wherein the lower chord is a box-section, and the lower chord of the box-section comprises a lower chord box-type wall panel, an upper flange panel and a lower flange panel, the lower end of the diagonal web member is connected to the web member node of the lower chord, and the web member node is provided with at least two vertical node plates extending along the lower chord box-type wall panel; the upper flange panel is provided with a node groove, and the vertical node plates are inserted into the node groove, and at least two of the vertical node plates are distributed at intervals and a node connection cavity is provided therebetween, and the end of the diagonal web member extends into the node connection cavity and is fixedly connected, thereby solving the technical problems of poor bearing capacity and insufficient fatigue resistance of the box-type lower chord connection node of the large-span crane truss.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial buildings, and in particular to a crane truss and a factory building structure. Background Art

[0002] Industrial plant crane trusses typically feature an I-section at the bottom chord. The connection between the bottom chord and the web of this I-section is relatively simple, providing clear force transmission. However, large-span crane trusses currently suffer from poor load-bearing capacity and insufficient fatigue resistance. Summary of the Invention

[0003] The purpose of the present invention is to provide a crane truss and a plant structure to solve the technical problems of poor bearing capacity and insufficient fatigue resistance of the box-type lower chord connection node of a large-span crane truss.

[0004] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0005] The present invention provides a crane truss, comprising: an upper chord, a lower chord, and a diagonal web member, wherein the lower chord is a box-shaped section, the lower chord of the box-shaped section comprising a lower chord box-shaped wall panel, an upper flange panel, and a lower flange panel, the lower end of the diagonal web member being connected to a web member node of the lower chord, the web member node being provided with at least two vertical node plates extending along the lower chord box-shaped wall panel;

[0006] The upper flange plate is provided with a node groove, the vertical node plate is inserted into the node groove, at least two vertical node plates are spaced apart and a node connection cavity is provided between the two, and the end of the diagonal web extends into the node connection cavity and is fixedly connected.

[0007] In a preferred embodiment, the web member node is provided with an oblique reinforcement plate, which is at least partially disposed in the node connection cavity and perpendicular to the lower chord box-type wall panel, and the oblique web member is fixedly connected to the oblique reinforcement plate.

[0008] In a preferred embodiment, the diagonal web member has an I-shaped cross section, and the diagonal reinforcement plate is parallel to the web of the diagonal web member and the two are fixedly connected.

[0009] In a preferred embodiment, the diagonal web member has a box-shaped cross section, and the diagonal reinforcement plate is parallel to the wall plate of the diagonal web member and the two are fixedly connected.

[0010] In a preferred embodiment, the web node is provided with at least one partition, which is at least partially located in the lower chord of the box section, and the partition is perpendicular to the lower chord box wall panel and the upper flange plate respectively; one side profile of the vertical node plate is fixedly connected to the partition.

[0011] In a preferred embodiment, the web member node is provided with at least two spaced-apart partitions, and the vertical node plate is provided between the two partitions and is fixedly connected to the two partitions respectively.

[0012] In a preferred embodiment, the web member node is provided with a partition plate, and a stiffener is connected to the contour of the side of the vertical node plate facing away from the partition plate.

[0013] In a preferred embodiment, the web member node is a middle node, and at least one of the diagonal web members is connected to the middle node.

[0014] In a preferred embodiment, the two diagonal web members are connected to the same middle node; the middle node is provided with a partition, the two diagonal web members are located on both sides of the partition, the vertical node plates are arranged on both sides of the partition, and the node connection cavities are provided on both sides of the partition.

[0015] In a preferred embodiment, the two diagonal web members are connected to the same middle node; the middle node is provided with two partitions, and the ends of the two diagonal web members extend to the same node connection cavity.

[0016] In a preferred embodiment, the crane truss comprises straight web members, the lower end of at least one of the straight web members is connected to the middle node, and the end of the straight web member extends into the node connection cavity and is fixedly connected.

[0017] In a preferred embodiment, the crane truss comprises a column and a support plate, and both the column and the support plate are fixedly connected to the lower chord;

[0018] The web member node is a node at the support, and at least one of the diagonal web members is connected to the node at the support.

[0019] In a preferred embodiment, the vertical gusset plate is arranged on the inner side of the support plate.

[0020] In a preferred embodiment, the diagonal web members are connected to the web member nodes by welding or bolts, and / or the straight web members are connected to the web member nodes by welding or bolts.

[0021] The present invention provides a plant structure, comprising: a crane track and the above-mentioned crane truss, wherein the crane track is installed on the lower chord of the crane truss.

[0022] The characteristics and advantages of the present invention are:

[0023] The crane truss provided by the present invention has a web member node on the lower chord, and the vertical node plate, the upper flange plate and the lower flange plate together form a small box section attached to the lower chord of the box section, so that the internal force of the diagonal web member is transmitted to the lower chord of the box section, so that the force transmission at the web member node is clear, the load-bearing capacity is improved, the fatigue resistance is enhanced, and the structure is relatively simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A partial schematic diagram of the crane truss provided by the present invention;

[0026] Figure 2 A schematic structural diagram of an embodiment of a middle node in a crane truss provided by the present invention;

[0027] Figure 2A A schematic structural diagram of another embodiment of the middle node in the crane truss provided by the present invention;

[0028] Figure 3 for Figure 2 AA-direction cross-sectional view;

[0029] Figure 4 for Figure 3 BB-direction cross-sectional view;

[0030] Figure 5 A schematic structural diagram of another embodiment of the middle node in the crane truss provided by the present invention;

[0031] Figure 5A A schematic structural diagram of another embodiment of the middle node in the crane truss provided by the present invention;

[0032] Figure 6 for Figure 5 The cross-sectional view along CC direction;

[0033] Figure 7 A front view schematic diagram of an embodiment of a web member node in a crane truss provided by the present invention;

[0034] Figure 8 A side view schematic diagram of an embodiment of a web member node in a crane truss provided by the present invention;

[0035] Figure 9A schematic structural diagram of an embodiment of a node at a support in a crane truss provided by the present invention;

[0036] Figure 10 for Figure 9 DD-direction cross-sectional view;

[0037] Figure 11 A schematic structural diagram of another embodiment of a node at a support in a crane truss provided by the present invention;

[0038] Figure 12 for Figure 11 EE-direction cross-sectional view;

[0039] Figure 13 This is a structural schematic diagram of the straight web node in the crane truss provided by the present invention.

[0040] Description of Figure Numbers:

[0041] 1. Vertical gusset plate; 11. Node connection cavity;

[0042] 21. Oblique reinforcement plate; 22. Straight reinforcement plate;

[0043] 3. Partition board; 4. Stiffening board;

[0044] 7. Lower chord; 70. Web member node; 71. Middle node; 72. Support node; 73. High-strength bolt; 74. Straight web member node;

[0045] 5. Lower chord box panel; 6. Upper flange plate; 60. Node groove; 61. Lower flange plate;

[0046] 81. Upper chord; 82. Pillar; 83. Support plate;

[0047] 84, oblique belly bar; 85, straight belly bar; 86, belly plate;

[0048] 91. Manhole; 92. Crane track. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0050] Option 1

[0051] The present invention provides a crane truss, such as Figures 1-12As shown, the crane truss includes: an upper chord 81, a lower chord 7 and a diagonal web 84, the lower chord 7 is a box section, the lower chord 7 of the box section includes a lower chord box-type wall panel 5, an upper flange plate 6 and a lower flange plate 61, the lower end of the diagonal web 84 is connected to the web node 70 of the lower chord 7, the web node 70 is provided with at least two vertical node plates 1 extending along the lower chord box-type wall panel 5; the upper flange plate 6 is provided with a node groove 60, the vertical node plate 1 is inserted into the node groove 60, at least two vertical node plates 1 are distributed at intervals and a node connection cavity 11 is provided between the two, and the end of the diagonal web 84 extends into the node connection cavity 11 and is fixedly connected.

[0052] In the crane truss provided by the present invention, at the web member node 70 of the lower chord 7, the vertical node plate 1, the upper flange plate 6 and the lower flange plate 61 together form a small box section attached to the lower chord 7 of the box section, and the internal force of the diagonal web member 84 is transmitted to the lower chord 7 of the box section, so that the force transmission at the web member node 70 is clear, the load-bearing capacity is improved, the fatigue resistance is enhanced, and the structure is relatively simple and the cost is low.

[0053] In one embodiment, the web member node 70 is provided with an oblique reinforcement plate 21, such as Figure 2-Figure 4 As shown, the diagonal stiffener 21 is at least partially disposed within the node connection cavity 11 and is perpendicular to the lower chord box panel 5. The diagonal web member 84 is fixedly connected to the diagonal stiffener 21. The internal forces of the diagonal web member 84 are connected to the lower chord 7 via the vertical gusset plate 1 and the diagonal stiffener 21. The internal forces transmitted from the diagonal web member 84 are then transmitted to the lower chord 7 via the vertical gusset plate 1 and the diagonal stiffener 21. Figure 2 、 Figure 5 、 Figure 9 and Figure 11 In the figure, a part of the vertical gusset plate 1 is cut away to show the oblique stiffener plate 21.

[0054] Further, if Figure 11-12 As shown, the diagonal web member 84 has an I-shaped cross section, and the diagonal stiffener plate 21 is parallel to the web 86 of the diagonal web member 84 and fixedly connected to it. Specifically, when the diagonal web member 84 has an I-shaped cross section, the diagonal stiffener plate 21 is installed between the two vertical gusset plates 1, corresponding to the web 86 of the diagonal web member 84. The vertical gusset plates 1 and the diagonal stiffener plate 21 form the node of the bottom chord 7 for connecting the diagonal web member 84, thereby improving the load-bearing capacity and fatigue resistance of the node between the bottom chord and the web of the long-span crane truss box.

[0055] In another embodiment, Figure 9-10 As shown, the diagonal web member 84 is a box-shaped cross-section, and the diagonal reinforcing plate 21 is parallel to the wall plate of the diagonal web member 84 and the two are fixedly connected. Specifically, two diagonal reinforcing plates 21 can be provided, respectively docking with two opposite wall plates of the diagonal web member 84.

[0056] In one embodiment, the web member node 70 is provided with at least one diaphragm 3, which is at least partially located in the lower chord 7 of the box section, and is perpendicular to the lower chord box panel 5 and the upper flange plate 6; one side profile of the vertical gusset plate 1 is fixedly connected to the diaphragm 3. Figure 3 、 Figure 6 、 Figure 10 and Figure 12 As shown, the vertical node plate 1, the partition plate 3, the upper flange plate 6 and the lower flange plate 61 together form a small box section attached to the lower chord 7 of the box section, transmitting the internal force of the diagonal web member 84 to the lower chord 7 of the box section.

[0057] The force transmission path of the web member node 70 includes: the internal force of the diagonal web member 84 is connected to the lower chord 7 through the vertical node plate 1 and the diagonal reinforcement plate 21. The vertical node plate 1 is inserted into the box section of the lower chord 7 and forms a small box section with the partition plate 3, the upper flange plate 6 and the lower flange plate 61. It bears the internal force transmitted from the diagonal web member 84 and transmits the internal force to the lower chord 7 of the box section.

[0058] Specifically, two vertical gusset plates 1 correspond to the flanges of diagonal web members 84, and node slots 60 are provided at the locations corresponding to the vertical gusset plates 1 on the upper flange plate 6 of the lower chord 7. Preferably, the vertical gusset plates 1 are parallel to the lower chord box panel 5. The diaphragm 3 can be completely located within the lower chord 7 or partially extend to the outside of the lower chord box panel 5.

[0059] The number of the partition plates 3 at the web member node 70 may be one or more.

[0060] In one embodiment, the web member node 70 is provided with at least two spaced-apart partitions 3, such as Figure 2-Figure 4 and Figure 9-10 As shown, the vertical gusset plate 1, the partition plate 3, the upper flange plate 6 and the lower flange plate 61 together form a small box section with closed ends. The vertical gusset plate 1 is arranged between the two partition plates 3 and is fixed to the two partition plates 3 respectively.

[0061] In another embodiment, the web member node 70 is provided with a diaphragm 3, such as Figure 5-Figure 6 and Figure 11-12 As shown, the vertical gusset plate 1, diaphragm 3, upper flange plate 6, and lower flange plate 61 together form a small box-shaped section with one end open. Furthermore, a stiffener 4 is connected to the side of the vertical gusset plate 1 facing away from the diaphragm 3. The stiffener 4 is located outside the vertical gusset plate 1, which helps ensure its local stability. The vertical gusset plate 1 penetrates the upper flange plate 6. The two vertical gusset plates 1 are located within the box-shaped lower chord 7. A diaphragm is located within the box-shaped lower chord 7 and connects to the vertical gusset plates 1, forming a single piece with the box-shaped lower chord.

[0062] The crane truss is suitable for a large-span crane truss with a box-shaped bottom chord and has a relatively large advantage. The web member node 70 can be a middle node 71 of the crane truss or a node 72 at a support.

[0063] In one embodiment, the web member node 70 is a mid-node 71, such as Figure 2-Figure 6 As shown, at least one diagonal member 84 is connected to the middle node 71. Further, two diagonal members 84 are connected to the same middle node 71; Figure 5-Figure 6 As shown, a diaphragm 3 is provided at the middle node 71, two diagonal web members 84 are located on both sides of the diaphragm 3, vertical gusset plates 1 are arranged on both sides of the diaphragm 3, and node connection cavities 11 are provided on both sides of the diaphragm 3. Preferably, two vertical gusset plates 1 are arranged on both sides of the diaphragm 3, and the vertical gusset plates 1 on both sides are arranged opposite each other.

[0064] In another embodiment, two diagonal web members 84 are connected to the same mid-node 71, such as Figure 2-Figure 4 As shown, the middle node 71 is provided with two partitions 3, and the ends of the two diagonal web members 84 extend to the same node connection cavity 11. Preferably, the two diagonal web members 84 are symmetrically arranged.

[0065] Furthermore, the crane truss includes straight webs 85. The lower end of at least one straight web 85 is connected to the middle node 71. The ends of the straight webs 85 extend into and are fixed to the node connection cavity 11. Diagonal webs 84 are connected to the bottom chord 7 via vertical gusset plates 1. The small box section formed by the vertical gusset plate 1, the diaphragm 3, the upper flange plate 6, and the lower flange plate 61 bears the internal forces transmitted from the straight webs 85 and transmits the internal forces to the bottom chord 7 of the box section.

[0066] The mid-section node 71 can also be equipped with a straight stiffener 22 that interfaces with the straight web 85. The force transmission principle and connection relationship of the straight stiffener 22 are similar to those of the diagonal stiffener 21 and will not be further described here. The force transmission path of the straight web 85 includes the following: the internal force of the diagonal web 84 is connected to the bottom chord 7 through the vertical gusset plate 1 and the straight stiffener 22. The small box section formed by the vertical gusset plate 1, the diaphragm 3, the upper flange plate 6, and the lower flange plate 61 receives the internal force transmitted from the straight web 85 and transmits it to the bottom chord 7 of the box section.

[0067] In some embodiments, the crane truss includes a column 82 and a support plate 83, both of which are fixed to the lower chord 7; the web member node 70 is a support node 72, and at least one diagonal web member 84 is connected to the support node 72. Figure 1 and Figures 9-12 As shown, the column 82 is located below the lower chord 7.

[0068] Furthermore, the vertical gusset plate 1 is arranged on the inner side of the support plate 83, as shown in FIG. Figures 9-12As shown, along the longitudinal direction of the lower chord 7 , the vertical gusset plate 1 in the node 72 at the support is located on the side of the support plate 83 close to the middle.

[0069] In some embodiments, at the straight web node 74, as Figure 1 and Figure 13 As shown, the upper flange plate 6 of the lower chord 7 is provided with a node groove 60 corresponding to the straight web member 85 , and the straight web member 85 is inserted into the node groove 60 .

[0070] The diagonal web members 84 and the web member nodes 70 and the straight web members 85 and the web member nodes 70 can be connected by welding or bolts. Figure 7 As shown, the diagonal web member 84 is connected to the web member node 70 by a high-strength bolt 73, and the straight web member 85 is also connected to the web member node 70 by a high-strength bolt 73; or, as shown Figure 2 and Figure 5 and Figure 9 and Figure 11 As shown, the diagonal web members 84 are welded to the web member nodes 70, and the straight web members 85 are also welded to the web member nodes 70. The vertical gusset plate 1 is inserted into the bottom chord 7, and the upper end of the vertical gusset plate 1 extends above the upper flange plate 6 of the bottom chord 7 to facilitate connection with the straight web members 85 or the diagonal web members 84.

[0071] How to design the node structure of a box-section large-span crane truss is currently a difficult problem in engineering. The crane truss provided by the present invention is suitable for large-span crane trusses with box-section bottom chords, achieving clear force transmission at 70 web member nodes, improving load-bearing capacity, enhancing fatigue resistance, and having a relatively simple structure and low cost. Figure 8 As shown, a manhole 91 is provided on the lower chord 7 .

[0072] Option 2

[0073] The present invention provides a plant structure comprising: a crane track 92 and the above-mentioned crane truss, wherein the crane track 92 is mounted on the lower chord 7 of the crane truss. The plant structure has the structural features and beneficial effects of the above-mentioned crane truss, which will not be described in detail here.

[0074] The above descriptions are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A crane truss, comprising: An upper chord, a lower chord, and a diagonal web member, wherein the lower chord is a box section, characterized in that the lower chord of the box section includes a lower chord box-shaped wall panel, an upper flange panel, and a lower flange panel, and the lower end of the diagonal web member is connected to the web member node of the lower chord, and the web member node is provided with at least two vertical gusset plates extending along the lower chord box-shaped wall panel; The upper flange plate is provided with a node groove, the vertical gusset plate is inserted into the node groove, at least two vertical gusset plates are spaced apart and a node connection cavity is provided between the two, and the end of the diagonal web member extends into the node connection cavity and is fixedly connected; The web member node is provided with at least one diaphragm, the diaphragm is at least partially located in the lower chord of the box section, and the diaphragm is perpendicular to the lower chord box wall panel and the upper flange panel respectively; One side profile of the vertical gusset plate is fixedly connected to the partition plate.

2. The crane truss according to claim 1, characterized in that: The web member node is provided with an oblique reinforcement plate, which is at least partially arranged in the node connection cavity and perpendicular to the lower chord box-type wall panel, and the oblique web member is fixedly connected to the oblique reinforcement plate.

3. The crane truss according to claim 2, characterized in that: The diagonal web member has an I-shaped cross section, and the diagonal reinforcement plate is parallel to the web of the diagonal web member and the two are fixedly connected; Alternatively, the diagonal web member is a box-shaped cross-section, and the diagonal reinforcement plate is parallel to the wall plate of the diagonal web member and the two are fixedly connected.

4. The crane truss according to claim 1, wherein: The web member node is provided with at least two spaced-apart partitions, and the vertical node plate is provided between the two partitions and is fixedly connected to the two partitions respectively; Alternatively, the web member node is provided with a partition plate, and a side profile of the vertical node plate facing away from the partition plate is connected to a stiffener.

5. The crane truss according to claim 1, wherein: The web member node is a middle node, and at least one diagonal web member is connected to the middle node.

6. The crane truss according to claim 5, characterized in that: The two diagonal web members are connected to the same middle node; The middle node is provided with a partition, the two diagonal web members are located on both sides of the partition, the vertical node plates are arranged on both sides of the partition, and the node connection cavities are provided on both sides of the partition.

7. The crane truss according to claim 5, characterized in that The two diagonal web members are connected to the same middle node; The middle node is provided with two partitions, and the ends of the two diagonal web members extend to the same node connection cavity.

8. The crane truss according to claim 5, characterized in that: The crane truss includes straight web members, the lower end of at least one of the straight web members is connected to the middle node, and the end of the straight web member extends into the node connection cavity and is fixedly connected.

9. The crane truss according to claim 1, wherein: The crane truss includes a column and a support plate, and the column and the support plate are both fixedly connected to the lower chord; The web member node is a node at the support, and at least one of the diagonal web members is connected to the node at the support.

10. The crane truss according to claim 9, characterized in that The vertical node plate is arranged on the inner side of the support plate.

11. The crane truss according to claim 8, wherein: The diagonal web members are connected to the web member nodes by welding or bolts, and / or the straight web members are connected to the web member nodes by welding or bolts.

12. A factory building structure, characterized in that: include: A crane rail and the crane truss according to any one of claims 1 to 11, wherein the crane rail is installed on the lower chord of the crane truss.

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