CN219526038U - Suspension node suitable for large-tonnage suspension crane - Google Patents
Suspension node suitable for large-tonnage suspension crane Download PDFInfo
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- CN219526038U CN219526038U CN202320431310.3U CN202320431310U CN219526038U CN 219526038 U CN219526038 U CN 219526038U CN 202320431310 U CN202320431310 U CN 202320431310U CN 219526038 U CN219526038 U CN 219526038U
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Abstract
The utility model relates to a suspension node suitable for a large-tonnage suspension crane, which comprises a net rack lower chord ball, a ball lower bracket, a connecting rod module and a transition steel beam which are sequentially connected from top to bottom, wherein: the transition steel beam is used for hanging and connecting with the crane track beam and is connected with an external lateral force resisting component; the connecting rod module comprises a connecting rod assembly and an elastic assembly, and two ends of the connecting rod assembly are respectively connected with the ball lower bracket and the transition steel beam; the elastic component sets up between link assembly and ball lower carriage, sets up between link assembly and transition girder steel. Compared with the prior art, the connecting rod assembly has certain suspension capacity through the elastic assembly, the horizontal constraint of the suspension node is greatly released, the suspension node only bears vertical force or mainly bears vertical force, the horizontal force is transmitted through the transition steel beam, the stress level of the suspension node and the structure above the suspension node is effectively controlled or improved generally, and large-tonnage suspension can be realized.
Description
Technical Field
The utility model relates to the technical field of road and bridge facility construction, in particular to a suspension node suitable for a large-tonnage suspension crane.
Background
When the suspension crane is suspended below the ball joint net frame, a certain vertical distance exists between the horizontal braking force generated by the crane operation and the center of the lower chord ball joint to form a moment arm, so that an additional bending moment is generated. When the moment arm is large or the tonnage of the suspension crane is large, the additional bending moment causes the overstress at the joint of the suspension support and the lower chord ball node or the overstress at the joint of the lower chord ball node and the net rack rod piece. Meanwhile, in the national standard atlas steel mesh frame structural design 07SG531, lower hanging nodes of a plurality of mesh frame underfloor hanging cranes with existing structures are also provided, the existing node structures limit the tonnage of the hanging cranes hung below the mesh frame, and the suspended crane is suitable for hanging cranes with lifting weight less than 5 tons.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a suspension node suitable for a large-tonnage suspension crane, which is used for solving the problem that the additional bending moment effect of the crane node is difficult to reduce in the prior art, so that the lifting capacity of the suspension crane with larger tonnage is realized.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a suspension node suitable for large-tonnage suspension crane, includes rack lower chord ball, ball lower carriage, connecting rod module and the transition girder steel that from last down connects gradually, wherein:
the transition steel beam is used for hanging and connecting with a crane track beam and is connected with an external lateral force resisting component;
the connecting rod module comprises a connecting rod assembly and an elastic assembly, and two ends of the connecting rod assembly are respectively connected with the ball lower bracket and the transition steel beam; the elastic component set up in between the link assembly with the ball lower carriage, and set up in between the link assembly with the transition girder steel.
In another preferred embodiment, the connecting rod assembly comprises at least one connecting rod unit, one end of each connecting rod unit is connected with a fixing piece after passing through the underframe and the elastic assembly, and the other end is fixed with a fixing piece after passing through the transition steel beam and the elastic assembly.
In another preferred embodiment, the fixing member is a cover plate, and the elastic component is an elastic pad.
In another preferred embodiment, the cover plate has an area smaller than that of the elastic pad.
In another preferred embodiment, the diameter of the cover plate is 3 to 5 times the diameter of the link unit.
In another preferred embodiment, the link unit includes a link bolt and a plurality of pairs of double nuts fixed on the link bolt and respectively disposed from top to bottom on the upper side of the upper fixing piece, the lower side of the ball lower bracket, the upper side of the transition steel beam, and the lower side of the lower fixing piece.
In another preferred embodiment, a spring washer is arranged between the double nut and the transition steel beam as well as between the double nut and the underframe, and a steel washer is arranged between the double nut and the cover plate.
In another preferred embodiment, more than two link units are arranged in an array.
In another preferred embodiment, the elastic assembly comprises an elastic backing plate, a guard ring and a plurality of fixing small plates, wherein the elastic backing plate is internally provided with an adapting hole penetrating through the connecting rod assembly, the outer part of the elastic backing plate is covered by the guard ring, and the fixing small plates are distributed on the guard ring and used for being connected with the underframe bracket or the transition steel beam.
In another preferred embodiment, the fixed platelets are evenly distributed around the perimeter of the grommet.
Compared with the prior art, the utility model has the following beneficial effects:
1. the connecting rod module is arranged, the connecting rod assembly has a certain suspension capacity through the elastic assembly, the horizontal constraint of the suspension node is greatly released, the suspension node only bears vertical force or mainly bears vertical force, the horizontal force is transmitted through the arranged transition steel beam, the stress level of the suspension node and the structure above the suspension node is generally effectively controlled or improved, and large-tonnage suspension can be realized. Meanwhile, the connecting rod assembly has the capability of resisting vertical tension and compression, and the elastic assembly absorbs the possible vertical vibration of the crane track beam.
2. The connecting rod assembly adopts a plurality of connecting rod units to present the structural arrangement of a matrix, so that the bearing capacity and the working stability of the connecting rod assembly are better.
3. The fixed part adopts the apron, and the elastic component adopts the elastic backing plate to the apron area is less than the elastic backing plate, can reduce the restriction to the elastic backing plate as far as possible when realizing fixed.
4. The connecting rod unit adopts a mode of matching a plurality of pairs of double nuts with connecting rod bolts, and has simple structure and strong reliability.
5. The elastic component adopts elastic backing plate, grommet and a plurality of fixed small plate structures, can firmly install and fix the elastic component, improves the shock absorption effect.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural view of the link module.
Fig. 3 is a schematic structural view of the elastic component.
Reference numerals: 1. a crane rail beam; 2. a transition steel beam; 3. a link module; 4. a connecting rod bolt; 5. an elastic backing plate; 6. a screw; 7. a double nut; 9. a guard ring; 10. a suspension device; 11. fixing the small plate; 12. a steel cover plate; 13. a connecting rod assembly; 14. an elastic component; 15. an adapter hole; 100. net rack lower chord ball; 200. an under ball support.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Some embodiments of the present utility model provide a suspension node suitable for use with a large tonnage suspension crane, with reference to fig. 1. The suspension crane comprises a net rack lower chord ball 100 and a ball lower bracket 200 connected with the net rack lower chord ball 100, wherein when the net rack lower chord ball 100 of the suspension crane is suspended below a net rack of a ball joint point, a certain vertical distance exists between a horizontal braking force f1 generated by crane operation and the center of the node of the net rack lower chord ball 100 to form a moment arm, and an additional bending moment M=d=f1sin theta is generated. When the moment arm is large or the tonnage of the suspension crane is large, the additional bending moment causes the stress f2 at the joint of the lower ball support 200 and the net rack lower chord ball 100 node to be too large, or the stress f2 at the joint of the lower chord ball node and the net rack rod piece to be too large. The movement along the track direction is customized to be in a first direction, and the vertical movement is customized to be in a second direction. In this embodiment, the first direction is the same horizontal direction as f1, and the pulling and pressing motion is generated by the pendulous pendulum of the overhead crane; the second direction is the same as f2 and is vertical movement with an included angle theta with the horizontal direction; the value of the angle θ affects the stress caused by the additional bending moment M.
This hang node 10 from last rack lower chord ball 100, ball lower carriage 200, connecting rod module 3 and the transition girder steel 2 that connects gradually down, wherein:
the transition steel beams 2 are used for hanging the crane rail beams 1 and for connecting external lateral force resisting members, such as columns, walls, etc. of the rail. Specifically, one side of the transition steel beam 2 is detachably connected with the underframe 200, and the other side is connected with the crane track beam 1.
The link module 3 includes a link assembly 13 and an elastic assembly 14. Both ends of the connecting rod assembly 13 are respectively connected with the ball lower bracket 200 and the transition steel beam 2. The elastic assembly 14 is disposed between the link assembly 13 and the under-ball bracket 200, and between the link assembly and the transition steel beam. The spring assembly 14 serves to balance the restraint of the transition steel beam 2 to the underframe 200.
In particular, the transition steel beam 2 is assembled from steel beam profiles. The transition steel beam 2 is used for balancing the stress of the suspension crane in the horizontal direction f1, so that the stress level of the suspension node and the structure above the suspension node is controlled or improved. f10 =f4, the forces in the horizontal direction reach equilibrium. The connection of the transition steel beam 2 and side force resistant members such as columns, walls and the like of the rail provides horizontal constraint for the rail beam of the suspension crane.
It will be appreciated that in the conventional scheme operation process, the net rack lower chord ball 100 bears the resultant force f5 of the horizontal f10 and the vertical f2 and the additional bending moment M between the two resultant forces, and the value of the included angle θ of the resultant forces affects the value of the additional bending moment M. In this embodiment, the link assembly 13 is connected to the net rack lower chord ball 100 through the under ball bracket 200, and the link assembly 13 transmits the acting force f3 through the under ball bracket 200 for balancing the stress f5. The connecting rod module 3 is also provided with an elastic component 14, and the elastic component 14 absorbs the vertical vibration of the crane track beam 1, so that the problem that the conventional suspension node transmits vertical force and horizontal force is overcome, and the unsafe structure of the node and the structure above the node is caused. Meanwhile, the connecting rod assembly 13 and the elastic assembly 14 have certain pendulous capacity, so that the horizontal constraint of the suspension node is greatly released, and the suspension node only bears vertical force or mainly bears vertical force. The horizontal force is transmitted through the transition steel beam 2, so that the stress level of the suspension node and the structure above the suspension node is controlled or improved.
It should be noted that, the connecting rod assembly 13 and the elastic assembly 14 are adapted and selected according to the stress in the horizontal direction or the vertical direction and the value of the additional bending moment M.
As a further improvement of the above technical solution, the link module 3 includes at least one link unit, and one end of each link unit is connected to a fixing member after passing through the underfloor 200 and the elastic assembly 14, and the other end is fixed to a fixing member after passing through the transition steel beam 2 and the elastic assembly 14. The specific unfolding is as follows: the connecting rod unit comprises a connecting rod bolt 4, a fixing piece is a steel cover plate 12, and an elastic component 14 is an elastic backing plate 5.
Specifically, as shown in connection with fig. 1 and 2, one end of the connecting rod bolt 4 passes through the bottom of the ball lower bracket 200 upward, and the other end passes through the upper flange of the transition steel beam 2 downward. The transition steel beam 2 is fixedly connected with the column and the wall of the track. The fastening mode can be selected as a bolt and a nut. The connecting rod bolts 4 extend in two directions for the transition connection of the net rack lower chord ball 100 and the transition steel girder 2; the horizontal constraint of the suspension node is released or the pulling and pressing movement of the crane track beam 1 is absorbed. Each connecting rod bolt 4 comprises a pair of paired nuts 7, and a plurality of connecting rod bolts 4 are arranged in an array. A plurality of pairs of double nuts 7 are fixed to the connecting rod bolts 4 and are respectively provided from top to bottom on the upper side of the upper steel deck 12, the lower side of the ball lower bracket 200, the upper side of the transition steel beam 2, and the lower side of the lower steel deck 12. That is, the link module 3 includes four link units, i.e., link bolts 4; each connecting rod bolt 4 comprises four groups of double nuts 7, and the two groups of double nuts are arranged at two ends of the connecting rod bolt 4.
Further, a spring washer is arranged between the double nut 7 and the transition steel beam 2 and between the double nut 7 and the underfloor bracket 200, and a steel washer is arranged between the double nut 7 and the two steel cover plates 12, so that protection and stability effects are achieved.
Specifically, the elastic backing plate 5 is sleeved on the connecting rod bolt 4 and locked by a steel cover plate 12 matched with the connecting rod bolt 4.
Alternatively, the elastic pad 5 is a rubber pad. The rubber pad should be treated with air sealing to meet the anti-aging requirement, and when the service life of the rubber is reached, the rubber pad is replaced by disassembling and assembling the connecting rod bolts 4 one by one.
As a further elaboration of the above solution, as shown in fig. 3, the elastic assembly 14 also comprises a grommet 9 and a number of fixed platelets 11; wherein, the inside of the elastic backing plate 5 is provided with an adapting hole 15 penetrating through the connecting rod bolt 4, and the outside is covered by a guard ring 9; the fixed small plates 11 are separately provided on the outer periphery of the guard ring 9.
Optionally, the guard ring 9 is made of stainless steel.
The elastic pad 5 is exemplified as a rubber pad. A round hole is formed in the middle of the rubber backing plate to penetrate through the connecting rod bolt 4, and the outer side surface of the rubber backing plate and the inner side surface of the guard ring 9 can be bonded by glue to form a whole; the periphery of the guard ring 9 is welded with a plurality of fixed small plates 11.
The fixed small plates 11 are uniformly distributed on the periphery of the guard ring 9 and are fixedly connected with the ball lower bracket 200 and/or the upper flange of the transition steel beam 2 through the screws 6.
The screw 6 is a self-tapping screw 6; the fixed small plate 11 is fixed with the bottom plate of the ball lower bracket 200 or with the upper flange of the transition steel beam 2 by adopting a self-tapping screw 6.
Alternatively, the elastic pad 5 is circular, and its size should be slightly larger than that of the steel cover plate 12, so as to achieve fixation while minimizing limitation of the elastic pad 5. Depending on the constraint relationship of the steel cover plate 12 and the connecting rod bolt 4, the diameter d1 of the steel cover plate 12 is preferably 3 to 5 times the diameter d2 of the connecting rod bolt 4.
As can be seen from the above embodiments, the steel cover plate 12 is selected and arranged according to the stress in the horizontal direction or the vertical direction and the value of the additional bending moment M.
Some embodiments of the present utility model further provide a suspension crane system, including a plurality of suspension nodes as described above, where each suspension node is assembled sequentially.
The bottom of the transition steel girder 2 of the hanging node is provided with an I-shaped steel girder, and all the hanging nodes are assembled in sequence through the I-shaped steel girder and bolts and nuts.
Some embodiments of the utility model also provide a suspension method comprising:
s101, manufacturing the suspension node;
s102, a plurality of hanging node units are assembled in sequence.
The suspension system of the suspension crane is assembled sequentially through each suspension node unit, and the suspension node units are assembled respectively and transported to the site for assembly.
Specifically, the making of the suspension node in step S101 includes:
s201, connecting a crane track beam 1 with a transition steel beam 2;
s202, the net rack lower chord ball 100 and the ball lower bracket 200 connected with the net rack lower chord 100 are arranged on the upper flange of the transition steel beam 2 through the connecting rod assembly 13 and the elastic assembly 14.
The transition steel beam 2 is connected with an external lateral force resisting component through an I-shaped steel beam; the net rack lower chord ball 100 is connected with the upper flange of the connecting rod module 3 through the ball lower bracket 200. The connecting rod assembly 13 is used for balancing the pulling and pressing movement transmitted between the transition steel beam 2 and the underframe 200; the spring assembly 14 serves to absorb horizontal constraints transferred between the transition steel beam 2 and the under-ball mount 200, as well as additional bending moments M caused by the horizontal and vertical constraints.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. Suspension node suitable for large-tonnage suspension crane, its characterized in that includes rack lower string ball (100), ball lower carriage (200), connecting rod module (3) and transition girder steel (2) that connect gradually from top to bottom, wherein:
the transition steel beam (2) is used for hanging and connecting with the crane track beam (1) and is connected with an external lateral force resisting component;
the connecting rod module (3) comprises a connecting rod assembly (13) and an elastic assembly (14), and two ends of the connecting rod assembly (13) are respectively connected with the ball lower bracket (200) and the transition steel beam (2); the elastic component (14) is arranged between the connecting rod component (13) and the underfloor bracket (200) and between the connecting rod component (13) and the transition steel beam (2).
2. Suspension node suitable for large tonnage suspension cranes according to claim 1, wherein the link assembly (13) comprises at least one link unit, each link unit having one end connected with a fixing element after passing through the under ball bracket (200) and the elastic assembly (14) and the other end fixed with a fixing element after passing through the transition steel beam (2) and the elastic assembly (14).
3. Suspension node suitable for large tonnage suspension cranes according to claim 2, wherein the fixing element is a cover plate and the elastic assembly (14) is an elastic pad (5).
4. A suspension node for a large tonnage suspension crane according to claim 3, characterized in that the area of the cover plate is smaller than the area of the resilient pad (5).
5. A suspension node suitable for use in a large tonnage suspension crane according to claim 3, wherein the cover plate has a diameter of 3-5 times the diameter of the linkage unit.
6. Suspension node suitable for large tonnage suspension cranes according to claim 2, wherein the connecting rod unit comprises a connecting rod bolt (4) and a plurality of pairs of double nuts (7), the pairs of double nuts (7) being fixed on the connecting rod bolt (4) and being arranged from top to bottom on the upper side of the upper fixing element, respectively, the lower side of the under-ball support (200), the upper side of the transition steel beam (2), and the lower side of the lower fixing element, respectively.
7. Suspension node suitable for large tonnage suspension cranes according to claim 6, wherein a spring washer is arranged between the double nut (7) and the transition steel beam (2), the underfloor support (200), and a steel washer is arranged between the double nut (7) and the cover plate.
8. A suspension node for a large tonnage suspension crane according to claim 2, wherein more than two link units are arranged in an array.
9. Suspension node suitable for large tonnage suspension cranes according to claim 1, characterized in that the elastic assembly (14) comprises an elastic pad (5), a grommet (9) and a plurality of fixed small plates (11), the inside of the elastic pad (5) is provided with an adapting hole (15) passing through the connecting rod assembly (13), the outside is covered by the grommet (9), the plurality of fixed small plates (11) are distributed on the grommet (9) for connecting the under ball brackets (200) or connecting the transition steel beams (2).
10. Suspension node suitable for large tonnage suspension cranes according to claim 9, wherein the fixed platelets (11) are evenly distributed around the periphery of the grommet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320431310.3U CN219526038U (en) | 2023-03-09 | 2023-03-09 | Suspension node suitable for large-tonnage suspension crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320431310.3U CN219526038U (en) | 2023-03-09 | 2023-03-09 | Suspension node suitable for large-tonnage suspension crane |
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| Publication Number | Publication Date |
|---|---|
| CN219526038U true CN219526038U (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320431310.3U Active CN219526038U (en) | 2023-03-09 | 2023-03-09 | Suspension node suitable for large-tonnage suspension crane |
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| Country | Link |
|---|---|
| CN (1) | CN219526038U (en) |
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- 2023-03-09 CN CN202320431310.3U patent/CN219526038U/en active Active
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