Integral girder falling structure of steel box girder bridge
Through the combination of level detection and thickened screw and thickened nuts, the inclination problem caused by terrain undulations in the construction of steel box girder bridge is solved, and the stable lifting and translation of steel box girder bridge is achieved, avoiding structural damage.
Patent Information
- Application Number
- CN202422268840.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-18
AI Technical Summary
During the construction process, the steel box girder bridge is inclined due to the undulating terrain, which causes uneven force during the lifting, translation and falling of the structure, which is prone to damage.
The leveling device is used to detect whether the electric sliding table is horizontal. The horizontal adjustment structure of the thickened screw and thickened nut is combined with the combination of the electric sliding table and hydraulic cylinder to achieve horizontal adjustment and translation of the steel box girder bridge.
It effectively avoids uneven stress caused by structural inclination, ensures stable lifting and translation of the steel box girder bridge, and avoids damage.
Smart Images
Figure CN223074620U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, and particularly relates to an integral beam dropping structure for a steel box girder bridge. Background Technique
[0002] A steel box girder, also known as a steel plate box girder, is a common structural form for long-span bridges. It is generally used in bridges with larger spans. Because its shape resembles a box, it is called a steel box girder. During the construction of a steel box girder bridge, usually, the beam bridge is directly hoisted onto the pier by a crane for assembly, or an assembly frame is pre-built. Then, several sections of the steel box girder bridge are hoisted onto the top of the assembly frame by a crane, and then workers weld the multiple sections of the beam bridge into a whole. After that, the beam bridge is transported to the installation site by means of jacking and translation. After the hydraulic cylinder is closed, the beam bridge is placed on the pier, which is suitable for the situation where the crane cannot reach the installation site.
[0003] When the beam dropping structure of the jacking and translation type is installed, a steel structure support also needs to be set at the bottom. Due to the undulation of the terrain, the beam dropping structure may be inclined after installation. The inclination of the beam dropping structure causes uneven stress when the structure jacks, translates, and drops the whole beam bridge, and it is very easy to cause structural damage. Content of the Utility Model
[0004] Based on this, the purpose of the utility model is to provide an integral beam dropping structure for a steel box girder bridge to solve the technical problems mentioned in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: an integral beam dropping structure for a steel box girder bridge, including columns, a placement table, and an electric sliding table. A spirit level is installed on the outer surface of the electric sliding table; positioning holes are opened at the top of the placement table, and thickened screws are arranged inside the positioning holes. A placement plate is fixed at the top of the thickened screws, and a first thickened nut and a second thickened nut are respectively sleeved outside the thickened screws.
[0006] By adopting the above technical scheme, it is convenient to check whether the electric sliding table is in a horizontal state through the spirit level, so as to avoid uneven stress caused by the inclination of the structure. When the electric sliding table is in an inclined state, the low point is jacked up by rotating the first thickened nut and the second thickened nut to achieve the leveling effect. The screw is a thickened screw, and the nuts are thickened nuts and there are two of them, increasing the contact area to improve the support effect and avoiding the collapse of the leveling structure.
[0007] Further, the first thickened nut abuts against the placement table, and the second thickened nut abuts against the first thickened nut.
[0008] By adopting the above technical solution, the staff rotates the first thickened nut and the second thickened nut below the low point, so that the thickened screw rod below the low point moves upward to jack up the low point, so as to achieve the leveling effect.
[0009] Furthermore, the thickened screw rod is detachably connected to the positioning hole.
[0010] By adopting the above technical solution, the staff inserts the two thickened screw rods into the positioning holes, so as to position the placement position of the hydraulic cylinder.
[0011] Furthermore, a plurality of the struts are provided, and cross beams and brackets are respectively connected between the plurality of struts. The placement table is connected to the top of the struts. The top of the placement plate is connected with a hydraulic cylinder, and an electric sliding table is installed on the top of the hydraulic cylinder, and a cushion block is connected to the output end of the electric sliding table.
[0012] By adopting the above technical solution, after the steel box girder bridge is assembled, the staff starts the hydraulic cylinder and the electric sliding table. After the hydraulic cylinder is started, it drives the electric sliding table and the cushion block to move upward, so that the cushion block fits against the bottom of the steel box girder bridge and jacks up the steel box girder bridge. After the electric sliding table is started, it drives the cushion block to displace, so that the steel box girder bridge translates in the direction of its installation position. After translating a short distance, the hydraulic cylinder is closed to make the electric sliding table and the cushion block move downward. Then the electric sliding table drives the cushion block to translate in the reverse direction to reset. Then the hydraulic cylinder is started again to jack up the steel box girder bridge, and the operations of jacking up, translating, and falling are carried out repeatedly, so as to convey the steel box girder bridge to the installation position.
[0013] Furthermore, the diameter of the placement plate is larger than the diameter of the hydraulic cylinder.
[0014] By adopting the above technical solution, the staff places the hydraulic cylinder on the top of the placement plate. Since the diameter of the placement plate is larger than the diameter of the hydraulic cylinder, the hydraulic cylinder is not easy to fall off.
[0015] Furthermore, two of each of the hydraulic cylinder, the placement plate, the first thickened nut, the second thickened nut, the thickened screw rod, and the positioning hole are provided.
[0016] By adopting the above technical solution, two of the first thickened nut, the second thickened nut, and the thickened screw rod are provided to facilitate adjusting the height difference between the left and right sides of the electric sliding table, so as to facilitate leveling the electric sliding table and avoid structural inclination.
[0017] Furthermore, the cross section of the bracket is in the shape of an "X".
[0018] By adopting the above technical solution, the staff installs the support structure composed of the struts, cross beams, brackets, and placement table on the ground, which is convenient for supporting other structures.
[0019] Furthermore, retaining rings are fixed on both sides of the top of the placement plate, and the retaining rings are in the shape of a hollow frustum of a cone.
[0020] By adopting the above technical solution, the staff place the hydraulic cylinder on the top of the placing plate. At this time, it is limited by the retaining ring to prevent the hydraulic cylinder from slipping off the placing plate.
[0021] To sum up, the utility model mainly has the following beneficial effects:
[0022] Through the settings of the spirit level, placing plate, first thickened nut, second thickened nut, thickened screw rod and positioning holes, it is convenient to check whether the electric sliding table is in a horizontal state through the spirit level, so as to avoid uneven force due to structural inclination. When the electric sliding table is in an inclined state, the low point is jacked up by rotating the first thickened nut and the second thickened nut to achieve the effect of leveling. The screw rod is a thickened screw rod, and there are two thickened nuts. The contact area is increased to improve the supporting effect and prevent the leveling structure from being crushed; it is convenient to adjust to the horizontal to avoid uneven force due to structural inclination. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a structural schematic diagram of the utility model;
[0024] Figure 2 is a sectional structural schematic diagram of the placing table of the utility model;
[0025] Figure 3 is an exploded structural schematic diagram of the placing table of the utility model;
[0026] Figure 4 is a structural schematic diagram of the support column of the utility model.
[0027] In the figure: 1, support column; 2, cross beam; 3, bracket; 4, placing table; 5, hydraulic cylinder; 6, electric sliding table; 7, cushion block; 8, spirit level; 9, placing plate; 10, first thickened nut; 11, second thickened nut; 12, thickened screw rod; 13, positioning holes; 14, retaining ring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.
[0029] The embodiments of the present utility model will be described below according to its overall structure.
[0030] Embodiment 1:
[0031] An integral girder dropping structure for a steel box girder bridge, as Figures 1 - 3As shown in the figure, it includes a support column 1, a placement table 4 and an electric sliding table 6. A level 8 is installed on the outer surface of the electric sliding table 6, and the staff can check whether the electric sliding table 6 is tilted through the level 8. Positioning holes 13 are provided at the top of the placement table 4. A thickened screw 12 is arranged inside the positioning hole 13, and the thickened screw 12 is detachably connected to the positioning hole 13. The two thickened screws 12 are inserted into the positioning holes 13 to position the placement position of the hydraulic cylinder 5. A placement plate 9 is fixed at the top of the thickened screw 12, and the diameter of the placement plate 9 is larger than the diameter of the hydraulic cylinder 5. The hydraulic cylinder 5 is placed on the top of the placement plate 9. The thickened screw 12 is sleeved with a first thickened nut 10 and a second thickened nut 11 respectively. The first thickened nut 10 abuts against the placement table 4, and the second thickened nut 11 abuts against the first thickened nut 10. There are two hydraulic cylinders 5, placement plates 9, first thickened nuts 10, second thickened nuts 11, thickened screws 12 and positioning holes 13. Rotate the first thickened nut 10 and the second thickened nut 11 below the low point to move the thickened screw 12 below the low point upward to jack up the low point, so as to achieve the effect of leveling.
[0032] Referring to Figure 1 and Figure 4 , in the above embodiment, there are multiple support columns 1. Cross beams 2 and brackets 3 are respectively connected between the multiple support columns 1. The cross section of the bracket 3 is in the shape of an "X". The placement table 4 is connected to the top of the support column 1. The composed support structure is installed on the ground to facilitate the support of the remaining structures. A hydraulic cylinder 5 is connected to the top of the placement plate 9. An electric sliding table 6 is installed on the top of the hydraulic cylinder 5. The output end of the electric sliding table 6 is connected with a cushion block 7. After the hydraulic cylinder 5 is started, it drives the electric sliding table 6 and the cushion block 7 to move upward, so that the cushion block 7 fits against the bottom of the steel box girder bridge and jacks up the steel box girder bridge. After the electric sliding table 6 is started, it drives the cushion block 7 to displace, so that the steel box girder bridge translates in the direction of its installation position.
[0033] Embodiment 2:
[0034] On the basis of the above Embodiment 1, in order to increase the placement stability of the hydraulic cylinder 5, the following settings are made now.
[0035] Referring to Figures 1 - 3 , in the above embodiment, retaining rings 14 are fixed on both sides of the top of the placement plate 9. The retaining rings 14 are in the shape of a hollow frustum of a cone, and are used for limiting to prevent the hydraulic cylinder 5 from slipping off the placement plate 9.
[0036] The implementation principle of the present utility model is as follows: First, the staff installs the support structure composed of the support column 1, the cross beam 2, the bracket 3 and the placement table 4 on the ground. Then, the staff inserts the two thickened screws 12 into the positioning holes 13 to position the placement position of the hydraulic cylinder 5. Then, the staff places the hydraulic cylinder 5 on the top of the placement plate 9. At this time, the retaining rings 14 are used for limiting to prevent the hydraulic cylinder 5 from slipping off the placement plate 9;
[0037] After the structure is assembled, the staff checks whether the electric slide table 6 is tilted through the spirit level 8. If the electric slide table 6 is in a tilted state, the staff rotates the first thickened nut 10 and the second thickened nut 11 under the low point, so that the thickened screw rod 12 under the low point moves upward to jack up the low point, so as to achieve the leveling effect. The screw rod is the thickened screw rod 12, and there are two thickened nuts. The contact area is increased to improve the support effect and prevent the leveling structure from being crushed.
[0038] After the staff assembles the steel box girder bridge, the staff starts the hydraulic cylinder 5 and the electric slide table 6. After the hydraulic cylinder 5 starts, it drives the electric slide table 6 and the cushion block 7 to move upward, so that the cushion block 7 fits against the bottom of the steel box girder bridge and jacks up the steel box girder bridge. After the electric slide table 6 starts, it drives the cushion block 7 to displace, so that the steel box girder bridge translates in the direction of its installation position. After translating a short distance, the hydraulic cylinder 5 is closed to make the electric slide table 6 and the cushion block 7 move downward. Then the electric slide table 6 drives the cushion block 7 to translate in the reverse direction to reset. Then the hydraulic cylinder 5 starts again to jack up the steel box girder bridge, and the operations of jacking up, translating, and falling are repeated to convey the steel box girder bridge to the installation position.
[0039] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention, and they are not limitations of the present invention. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations that do not make creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.
Claims
1. An integral girder dropping structure for a steel box girder bridge, comprising a support column (1), a placing table (4) and an electric sliding table (6), characterized in that: A spirit level (8) is installed on the outer surface of the electric slide table (6); a positioning hole (13) is formed at the top of the placement table (4), and a thickened screw rod (12) is arranged inside the positioning hole (13). The top end of the thickened screw rod (12) is fixed with a placement plate (9), and a first thickened nut (10) and a second thickened nut (11) are respectively sleeved outside the thickened screw rod (12).
2. The integral girder dropping structure of the steel box girder bridge according to claim 1, characterized in that: The first thickened nut (10) abuts against the placement table (4), and the second thickened nut (11) abuts against the first thickened nut (10).
3. The integral girder dropping structure of the steel box girder bridge according to claim 1, characterized in that: The thickened screw rod (12) is detachably connected to the positioning hole (13).
4. The integral girder dropping structure of the steel box girder bridge according to claim 1, wherein: A plurality of struts (1) are provided, and a cross beam (2) and a bracket (3) are respectively connected between the plurality of struts (1). The placement table (4) is connected to the top of the struts (1). A hydraulic cylinder (5) is connected to the top of the placement plate (9), an electric slide table (6) is installed on the top of the hydraulic cylinder (5), and a cushion block (7) is connected to the output end of the electric slide table (6).
5. The integral girder dropping structure of the steel box girder bridge according to claim 4, characterized in that: The diameter of the placement plate (9) is larger than the diameter of the hydraulic cylinder (5).
6. The integral girder dropping structure of the steel box girder bridge according to claim 5, characterized in that: Two hydraulic cylinders (5), placement plates (9), first thickened nuts (10), second thickened nuts (11), thickened screw rods (12) and positioning holes (13) are provided respectively.
7. The integral girder dropping structure of the steel box girder bridge according to claim 4, wherein: The cross section of the bracket (3) is in an "X" shape.
8. The integral girder dropping structure of the steel box girder bridge according to claim 1, characterized in that: Retaining rings (14) are fixed on both sides of the top of the placement plate (9), and the retaining rings (14) are in the shape of a hollow frustum of a cone.