Lower seat plate structure for cylindrical surface steel support

Abstract

The utility model relates to the technical field of cylindrical surface steel supports in bridge structures, in particular to a lower seat plate structure for a cylindrical surface steel support, which is provided with a bottom plate and two transverse baffles which are convexly formed on the top side of the bottom plate and are used for limiting on the left side and the right side in the sliding direction of a cylindrical surface, each transverse baffle is arranged along the sliding direction of the cylindrical surface; the bottom plate and the transverse baffles are of rolled steel plate structures and / or forged steel plate structures. The two transverse baffles are welded and fixed to the left side and the right side of the top side cylindrical surface of the bottom plate in the sliding direction. According to the lower seat plate, the rolled steel plate and / or the forged steel structure which are / is compact in internal organization structure, stable in mechanical property and large in bearable moment are / is adopted as base materials, and the manufactured lower seat plate has the technical advantages of being easy to form, stable in mechanical property, large in bearable moment and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of cylindrical steel supports in bridge structures, in particular to a lower seat plate structure used for the cylindrical steel supports. Background Art

[0002] In a suspension bridge structure, the cable saddle is an important supporting component used to support, deflect, and diverge the main cable. It needs to adapt to the changes in dynamic and static loads of the supported main cable and produce a certain swinging motion along the extension direction of the main cable on the base. The cylindrical steel support is a common structural form for assembling the cable saddle on the base.

[0003] like Figure 1 As shown, the cylindrical steel support for a loose cable saddle comprises an upper base plate 2 connected to the bottom of the saddle, a lower base plate 1 connected to the buttress, and a cylindrical guide plate 3 with a guiding cylindrical structure located between the lower and upper base plates 1 and 2. The saddle connected to the upper base plate 2 slides cylindrically on the lower base plate 1 via the cylindrical guide plate 3, transferring the gravity load to the buttress via the lower base plate 1. As can be seen, the lower base plate 1 is a key load-bearing component in the cylindrical steel support structure, and is required to withstand enormous vertical loads during service.

[0004] In the aforementioned cylindrical steel support structure, the lower seat plate 1 has two transverse baffles 12 protruding from its base plate 11 in the transverse direction of its width to withstand transverse forces. The area between the two transverse baffles 12 serves as the assembly space for the cylindrical guide plate 3, and the cylindrical sliding direction of the cylindrical guide plate 3 follows the length of the transverse baffles 12. To constrain the longitudinal displacement of the cylindrical guide plate 3 on the lower seat plate 1, longitudinal baffles 13 are protruding from the longitudinal ends of the base plate 11 of the lower seat plate 1. Each longitudinal baffle 13 is connected to an adjustable adjustment assembly 14 that abuts against the cylindrical guide plate 3.

[0005] For a long time, the lower seat plate 1 of the above-mentioned columnar steel support has been made of a cast structure, that is, a cast steel plate structure. Due to the different functions of the transverse baffle 12 and the longitudinal baffle 13 on the lower seat plate 1, the transverse baffle 12 and the bottom plate 11 of the lower seat plate 1 are usually cast as an integrated structure, and the longitudinal baffle 13 and the bottom plate 11 of the lower seat plate 1 are formed as a separate combined structure, such as Figure 2 and Figure 3 As shown in the Chinese patent document entitled "Double Cylindrical Steel Bearing for Bridges," publication number CN 2797429 Y, and publication date July 19, 2006, etc., however, cast steel structures always have uncontrollable casting defects. To reduce casting defects in the lower seat plate of cast steel structures, the industry generally adopts the following technical measures:

[0006] 1. During casting, a large transition fillet is designed between the bottom plate of the lower seat plate and the transverse baffle to leave sufficient margin for subsequent machining;

[0007] 2. Increase the casting thickness of the bottom plate of the lower seat plate to leave enough margin for subsequent machining.

[0008] The lower seat plate formed by these technical measures has the following technical problems:

[0009] 1. The large rounded corners between the base plate and the transverse baffle of the lower seat increase the amount of casting material used and the amount of subsequent machining work, leading to higher manufacturing costs.

[0010] 2. Increasing the thickness of the lower seat plate will increase the amount of casting material used and the amount of subsequent machining work, resulting in higher manufacturing costs;

[0011] 3. Even so, the casting defects can only be controlled and reduced as much as possible, but cannot be completely eliminated, resulting in poor mechanical properties of the molded lower seat plate. Utility Model Content

[0012] The technical purpose of the present invention is to provide a lower seat plate structure for a cylindrical steel support with stable mechanical properties, large load-bearing moment and easy forming, in view of the particularity of the cylindrical steel support used for the above-mentioned suspension bridge and the technical deficiencies of the existing lower seat plate.

[0013] The technical objectives of the present invention are achieved through the following technical solutions: a lower seat plate structure for a cylindrical steel support, the lower seat plate comprising a bottom plate and two transverse baffles formed on the top side of the bottom plate for limiting the position on the left and right sides of the cylindrical sliding direction, each transverse baffle being arranged along the cylindrical sliding direction;

[0014] The bottom plate and the transverse baffle are made of rolled steel plate structure and / or forged steel plate structure;

[0015] Two transverse baffles are welded and fixed on the left and right sides of the sliding direction of the top cylindrical surface of the bottom plate.

[0016] The molding structure of the aforementioned lower seat plate is designed specifically for the specific needs of cylindrical steel supports for loose cable saddles. It utilizes rolled steel plates and / or forged steel structures with dense internal structures, stable mechanical properties, and high torque capacity as the base material. These separate bottom plates and transverse baffles are welded together to form the lower seat plate adapted for the cylindrical steel supports. This welded steel plate lower seat plate offers the following technical advantages over integrally cast lower seats:

[0017] 1. It can be formed by cutting and welding finished steel plates, with less machining work and easy forming;

[0018] 2. The lower seat plate has a dense internal structure, stable mechanical properties, and can bear large torque;

[0019] 3. It reduces material waste and is easy to shape, which helps to reduce manufacturing costs.

[0020] As one of the preferred technical solutions, the top side of the bottom plate is used as an area for fixing the corresponding transverse baffle, and has an embedded groove with a concave structure. The contour structure of the embedded groove matches the bottom of the corresponding transverse baffle and can accommodate the bottom of the corresponding transverse baffle;

[0021] The bottom of the transverse baffle is embedded in the corresponding embedding groove on the top side of the bottom plate, and the embedding seam between the transverse baffle and the bottom plate is fixed by fillet welding.

[0022] Furthermore, the embedding groove on the bottom plate is a through-hole structure connecting the top and bottom sides of the bottom plate;

[0023] The bottom of the transverse baffle embedded in the corresponding embedding groove is flush with the bottom side of the bottom plate.

[0024] The matching structure between the above-mentioned base plate and the transverse baffle enables the transverse baffle to be fixed on the base plate by forming a stable embedded combination through the embedded groove, especially the embedded groove with a through-hole structure, and is strengthened by the easier-to-implement fillet weld, thereby making the transverse baffle firmly fixed to the base plate, with good stability and the ability to bear large torque.

[0025] Alternatively, as one of the possible alternative technical solutions, the top side of the base plate is used as an area for fixing the corresponding transverse baffle, and is a flat structure that is coplanar with the seating plane of the cylindrical guide plate on the base plate;

[0026] The transverse baffle is fixed to the corresponding area on the top side of the bottom plate by full penetration welding.

[0027] The above technical measures can also fix the transverse baffle to the base plate by full penetration welding, forming a connection and fixation of the transverse baffle of the steel plate structure on the base plate of the steel plate structure, but the full penetration welding method will increase the technical difficulty of welding and fixing the transverse baffle on the base plate.

[0028] As one of the preferred technical solutions, the thickness of the transverse baffle is 200-300 mm. The transverse baffle of this technical measure has a large connection surface on the bottom plate, a stable connection structure, and can bear a large moment.

[0029] As one of the preferred technical solutions, a plurality of adjustment screw holes are provided on the top of the transverse baffle;

[0030] An adjusting bolt capable of supporting the upper seat plate above the lower seat plate is connected in each adjusting screw hole.

[0031] Furthermore, the multiple adjustment screw holes on the top of the transverse baffle are divided into two groups, and the two groups of adjustment screw holes are arranged at the two ends of the top of the transverse baffle.

[0032] The above technical measures can form an adjustment structure on the transverse baffle that can fine-tune the height of the upper seat plate of the cylindrical steel support relative to the lower seat plate, which is conducive to installation and construction and subsequent fine-tuning of the cylindrical sliding, and has good flexibility.

[0033] As one of the preferred technical solutions, the thickness of the bottom plate is 80-100 mm. The bottom plate of this technical measure can meet the load-bearing performance while effectively avoiding the waste of materials caused by the bottom plate being too thick.

[0034] The lower seat plate is a lower seat plate of a cylindrical steel support for a loose cable saddle. The lower seat plate of this technical measure is designed for the cylindrical steel support of a loose cable saddle, can effectively adapt to the working environment of the loose cable saddle, and has strong pertinence.

[0035] The beneficial technical effect of the present invention is that the forming structure of the above-mentioned lower seat plate is designed according to the particularity of the cylindrical steel support for the loose cable saddle. It adopts rolled steel plates and / or forged steel structures with dense internal organizational structure, stable mechanical properties and large load-bearing torque as the base material to form a split bottom plate and a transverse baffle. The split bottom plate and the transverse baffle are fixed by welding to form a lower seat plate adapted to the cylindrical steel support, especially the connection structure of the embedded groove and the welding, so that the transverse baffle is stably and firmly fixed to the bottom plate.

[0036] The lower seat plate of the above technical measures has the following technical advantages:

[0037] 1. It can be formed by cutting and welding finished steel plates, with less machining work and easy forming;

[0038] 2. The lower seat plate has a dense internal structure, stable mechanical properties, and can bear large torque;

[0039] 3. It reduces material waste and is easy to shape, which helps to reduce manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic diagram of the structure of the existing cylindrical steel support used for loose cable saddles.

[0041] Figure 2 for Figure 1 Schematic diagram of the main structure of the lower seat plate.

[0042] Figure 3 for Figure 2 AA view in.

[0043] Figure 4 It is a structural diagram of the present utility model.

[0044] Figure 5 for Figure 4 BB view in .

[0045] Figure 6 for Figure 4 Schematic diagram of the base plate structure.

[0046] The meaning of the codes in the figure are: 1—lower seat plate; 11—bottom plate; 12—horizontal baffle; 13—longitudinal baffle; 14—adjustment component; 15—adjustment screw hole; 16—mounting slot; 2—upper seat plate; 3—cylindrical guide plate. DETAILED DESCRIPTION

[0047] The present invention relates to the technical field of columnar steel supports in bridge structures, specifically a lower seat plate structure for columnar steel supports. The following describes the main technical solutions of the present invention in detail with reference to a number of embodiments. Figure 4-6 The technical solution of the utility model is clearly and in detail explained.

[0048] It should be noted that the drawings of the present invention are schematic and have been simplified to clarify the technical objectives of the present invention, without necessarily obscuring the technical contribution of the present invention over the prior art. Furthermore, expressions such as "approximately" and "substantially" regarding quantities or fitting relationships below are intended to allow for reasonable assembly and processing errors within the industry, and do not literally represent absolute quantities or fitting relationships.

[0049] Example 1

[0050] See also Figure 4-Figure 6 As shown, the utility model is a lower seat plate structure of a cylindrical steel support for a suspension bridge loose cable saddle, which has a bottom plate 11 of a rolled steel plate structure and two transverse baffles 12 of a rolled steel plate structure.

[0051] Specifically, the thickness of the base plate 11 is approximately 90 mm. On either side of the base plate 11, near the edges in the transverse direction, mounting slots 16 are provided, connecting the top and bottom sides (i.e., mounting slots 16 are through-hole structures). The width and length of each mounting slot 16 correspond to the width and length of the designed transverse baffle 12. The top surface of the base plate 11 between the mounting slots 16 serves as the mounting area for the cylindrical guide plate, defining the cylindrical sliding direction. In other words, the length of each mounting slot 16 is shaped along the cylindrical sliding direction.

[0052] The thickness of each transverse baffle 12 is about 260 mm. The height of the transverse baffle 12 is greater than the thickness of the bottom plate 11.

[0053] The two transverse baffles 12 are fixed to the base plate 11, corresponding to the two mounting grooves 16 on the base plate 11. Once secured in place within the corresponding mounting grooves 16, the bottoms of the transverse baffles 12 are flush with the bottom surface of the base plate 11. The fixed transverse baffles 12 are secured with fillet welds at the mounting seams on the top surface of the base plate 11. Similarly, the mounting seams on the bottom surface of the base plate 11 are also secured with fillet welds, which, of course, need to be polished flush with the bottom surface of the base plate 11.

[0054] In this way, two transverse baffles 12 of the rolled steel plate structure are protruded on the top side of the bottom plate 11 of the rolled steel plate structure, and are used to form an installation space for the cylindrical guide plate on the top side of the bottom plate 11, forming a cylindrical sliding direction, and each transverse baffle 12 is arranged along the cylindrical sliding direction.

[0055] To accommodate fine-tuning of the upper seat plate of the cylindrical steel support, a plurality of adjustment screw holes 15 are provided at the top of each transverse baffle 12. These adjustment screw holes 15 are divided into two groups, spaced at equal distances from each end of the top of the transverse baffle 12. The adjustment screw holes 15 on the two transverse baffles 12 are positioned in a generally bilaterally symmetrical pattern. Each adjustment screw hole 15 is connected to an adjustment bolt that abuts against the upper seat plate above the lower seat plate 1.

[0056] Example 2

[0057] The utility model relates to a lower seat plate structure of a columnar steel support for a loose cable saddle of a suspension bridge. The lower seat plate structure comprises a bottom plate of a rolled steel plate structure and two transverse baffles of the rolled steel plate structure.

[0058] Specifically, the base plate is approximately 100mm thick. On either side of the base plate, near the edges along the transverse bridge, blind-hole mounting slots are provided, recessed from the top (i.e., they do not extend to the bottom of the base plate). The width and length of each mounting slot correspond to the width and length of the designed transverse baffle. The top surface of the base plate between the two mounting slots serves as the mounting area for the cylindrical guide plate, defining the cylindrical sliding direction. In other words, the length of each mounting slot is shaped along the cylindrical sliding direction.

[0059] The thickness of each transverse baffle is about 300 mm. The height of the transverse baffle is greater than the thickness of the above-mentioned base plate.

[0060] The two transverse baffles are fixed on the bottom plate in a manner corresponding to the two fixing grooves on the bottom plate. The fixed transverse baffles are fixed in place by fillet welding at the fixing seams on the top side surface of the bottom plate.

[0061] In this way, two horizontal baffles of the rolled steel plate structure are protruded on the top side of the bottom plate of the rolled steel plate structure, which are used to form the installation space of the cylindrical guide plate on the top side of the bottom plate, forming the sliding direction of the cylindrical surface, and each horizontal baffle is arranged along the sliding direction of the cylindrical surface.

[0062] To accommodate fine-tuning of the upper base plate of the cylindrical steel support, multiple adjustment screw holes are located at the top of each transverse baffle. These adjustment screw holes are divided into two groups, spaced at equal distances at each end of the baffle. The adjustment screw holes on the two baffles are positioned in a roughly bilaterally symmetrical pattern. Each adjustment screw hole is connected to an adjustment bolt that abuts the upper base plate above the lower base plate.

[0063] Example 3

[0064] The utility model relates to a lower seat plate structure of a columnar steel support for a loose cable saddle of a suspension bridge. The lower seat plate structure comprises a bottom plate of a rolled steel plate structure and two transverse baffles of the rolled steel plate structure.

[0065] Specifically, the base plate is approximately 80mm thick. Horizontal baffle connection areas are located on the top surface of the base plate near the edges on both sides of the transverse bridge. The area on the top surface of the base plate, used to secure the corresponding horizontal baffles, is flat and coplanar with the plane where the cylindrical guide plate rests on the base plate. The horizontal baffle connection areas on the top surface of the base plate are defined along the sliding direction of the cylindrical surface.

[0066] The thickness of each transverse baffle is approximately 200 mm.

[0067] The two transverse baffles correspond to the two transverse baffle connection areas delineated on the base plate, and are seated on the top surface of the base plate through the bottom. The arranged transverse baffles are seated on the top surface of the base plate and fixed by full penetration welding.

[0068] In this way, two horizontal baffles of the rolled steel plate structure are protruded on the top side of the bottom plate of the rolled steel plate structure, which are used to form the installation space of the cylindrical guide plate on the top side of the bottom plate, forming the sliding direction of the cylindrical surface, and each horizontal baffle is arranged along the sliding direction of the cylindrical surface.

[0069] To accommodate fine-tuning of the upper base plate of the cylindrical steel support, multiple adjustment screw holes are located at the top of each transverse baffle. These adjustment screw holes are divided into two groups, spaced at equal distances at each end of the baffle. The adjustment screw holes on the two baffles are positioned in a roughly bilaterally symmetrical pattern. Each adjustment screw hole is connected to an adjustment bolt that abuts the upper base plate above the lower base plate.

[0070] Example 4

[0071] The utility model relates to a lower seat plate structure of a columnar steel support for a loose cable saddle of a suspension bridge. The lower seat plate structure comprises a bottom plate of a rolled steel plate structure and two transverse baffles of the rolled steel plate structure.

[0072] Specifically, the base plate is approximately 85mm thick. On either side of the base plate, near the edges along the transverse bridge, mounting slots are provided, connecting the top and bottom sides (i.e., the mounting slots are through-hole structures). The width and length of each mounting slot correspond to the width and length of the designed transverse baffle. The top surface of the base plate between the two mounting slots serves as the mounting area for the cylindrical guide plate, defining the cylindrical sliding direction. In other words, the length of each mounting slot is shaped along the cylindrical sliding direction.

[0073] The thickness of each transverse baffle is about 230mm. The height of the transverse baffle is greater than the thickness of the above-mentioned base plate.

[0074] The two transverse baffles are fixed to the base plate, corresponding to the two mounting grooves on the base plate. Once fixed in place within the corresponding mounting grooves, the bottoms of the baffles are flush with the bottom surface of the base plate. The fixed transverse baffles are secured with fillet welds at the mounting seams on the top surface of the base plate. Similarly, the mounting seams on the bottom surface of the base plate are also fixed with fillet welds, which need to be polished flush with the bottom surface of the base plate.

[0075] In this way, two horizontal baffles of the rolled steel plate structure are protruded on the top side of the bottom plate of the rolled steel plate structure, which are used to form the installation space of the cylindrical guide plate on the top side of the bottom plate, forming the sliding direction of the cylindrical surface, and each horizontal baffle is arranged along the sliding direction of the cylindrical surface.

[0076] Example 5

[0077] The rest of this embodiment is the same as that of Embodiment 1, 2, 3 or 4, except that:

[0078] The bottom plate adopts forged steel plate structure;

[0079] The two horizontal baffles are also made of forged steel plate structure.

[0080] Example 6

[0081] The rest of this embodiment is the same as that of Embodiment 1, 2, 3 or 4, except that:

[0082] The two horizontal baffles are made of forged steel plates.

[0083] The above embodiments are only used to illustrate the present invention, rather than to limit it.

[0084] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the specific technical solutions of the above embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the present invention.

Claims

1. A lower seat plate structure for a cylindrical steel support, the lower seat plate (1) comprising a bottom plate (11) and two transverse baffles (12) protruding from the top side of the bottom plate (11) and used for limiting the position on the left and right sides of the cylindrical sliding direction, each transverse baffle (12) being arranged along the cylindrical sliding direction; Its characteristics are: The bottom plate (11) and the transverse baffle (12) are made of rolled steel plate structure and / or forged steel plate structure; Two transverse baffles (12) are welded and fixed on the left and right sides of the top cylindrical surface of the bottom plate (11) in the sliding direction.

2. The lower seat plate structure for a cylindrical steel support according to claim 1, characterized in that: The top side of the bottom plate (11) is used as an area for fixing the corresponding transverse baffle (12), and has an embedded groove (16) with an inward concave structure. The contour structure of the embedded groove (16) matches the bottom of the corresponding transverse baffle (12) and can accommodate the bottom of the corresponding transverse baffle (12); The bottom of the transverse baffle (12) is embedded in a corresponding embedding groove (16) on the top side of the bottom plate (11), and the embedding seam between the transverse baffle (12) and the bottom plate (11) is fixed by fillet welding.

3. The lower seat plate structure for a cylindrical steel support according to claim 2, characterized in that: The embedding groove (16) on the bottom plate (11) is a through-hole structure connecting the top and bottom sides of the bottom plate (11); The bottom of the transverse baffle (12) embedded in the corresponding embedding groove (16) is flush with the bottom side of the bottom plate (11).

4. The lower seat plate structure for a cylindrical steel support according to claim 1, characterized in that: The top side of the bottom plate (11) is used as an area for fixing the corresponding transverse baffle (12), and is a flat structure coplanar with the seating plane of the cylindrical guide plate (3) on the bottom plate (11); The transverse baffle (12) is fixed to a corresponding area on the top side of the bottom plate (11) by full penetration welding.

5. The lower base plate structure for a cylindrical steel support according to claim 1, 2, 3 or 4, characterized in that: The thickness of the transverse baffle (12) is 200-300 mm.

6. The lower seat plate structure for a cylindrical steel support according to claim 5, characterized in that: A plurality of adjustment screw holes (15) are provided on the top of the transverse baffle (12); An adjusting bolt capable of supporting the upper seat plate (2) above the lower seat plate (1) is connected to each adjusting screw hole (15).

7. The lower seat plate structure for a cylindrical steel support according to claim 6, characterized in that: The plurality of adjusting screw holes (15) on the top of the transverse baffle (12) are divided into two groups, and the two groups of adjusting screw holes (15) are spaced apart and arranged at both ends of the top of the transverse baffle (12).

8. The lower base plate structure for a cylindrical steel support according to claim 1, 2, 3 or 4, characterized in that: The thickness of the bottom plate (11) is 80-100 mm.

9. The lower seat plate structure for a cylindrical steel support according to claim 1, characterized in that: The lower seat plate (1) is a lower seat plate (1) of a cylindrical steel support for a loose cable saddle.

Images