Lightweight pendulum shaft type splay cable saddle

Abstract

The utility model relates to a splay cable saddle for a suspension bridge, and discloses a lightweight pendulum shaft type splay cable saddle which is provided with a saddle body of a welding structure. The saddle body comprises a bottom block and a plurality of rib plates which are arranged on the bottom block in a crossed mode in the bridge direction and the transverse bridge direction and used for supporting the saddle head. The saddle body is of a conical structure in the bridge direction, and the length of the top of the conical structure is larger than that of the bottom of the conical structure in the bridge direction. The rib plates forming the saddle body are steel plates and / or forged steel plates; the rib plate is of a splicing structure formed by welding up and down in the height direction and is provided with a rib plate body section on the upper side and a rib plate thickening section on the lower side, the thickness of the rib plate thickening section is larger than that of the rib plate body section, and the rib plate thickening section is used for being welded to the bottom block. The supporting performance is met, meanwhile, the stress concentration phenomenon at the joint of the rib plate and the bottom block of the saddle body can be effectively improved, and material waste can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the saddle of cable of suspension bridge, concretely, relates to a lightweight swing axle type saddle of cable of suspension bridge. BACKGROUND

[0002] The erection and fixation of the main cable of suspension bridge are through the corner and displacement of the saddle of cable, to realize the stress uniformity of each strand after the main cable is scattered, and further guarantee the reliability of the construction and safety of suspension bridge. As can be seen, the saddle of cable is an important load-bearing component in the suspension bridge engineering.

[0003] The common saddle of cable is swing axle type structure, can see the technology of Chinese patent literature publication name as "a swing axle type saddle of cable", the publication number is CN105220614A, the publication date is January 6, 2016. The saddle of cable in this technology is mainly composed of saddle body and base that are movably connected together, the saddle body is composed of saddle body and saddle head connected on the saddle body, the saddle body is composed of bottom block and multiple rib plates arranged on the bottom block in the cross direction and the cross direction of bridge, used as the support of saddle head. The saddle body in the above structure can swing forward and backward on the base along the extension direction of the main cable according to the stress condition of the main cable, which can adapt to the transformation and adjustment of the dynamic load of suspension bridge.

[0004] The traditional swing axle type saddle of cable structure is usually formed by casting structure. However, due to the complex structure and large wall thickness difference of the swing axle type saddle of cable, the casting technology is difficult, not to mention the inevitable casting defects of the casting, which makes the stress performance relatively limited. In order to ensure the stress performance, the structure size of the saddle of cable formed is large and heavy, which is not conducive to the compactness and lightness of the formed structure.

[0005] In view of this, in recent years, various saddle bodies formed by internal organization dense, excellent stress performance of forged steel plate or ordinary steel plate have been disclosed in the industry. Under the condition of meeting the support performance, the rib plates constituting the saddle body can be made thinner, and the formed saddle body structure is compact and relatively light. However, since the saddle body is in the form of a tapered structure with a longer top length than a bottom length in the cross direction of the bridge, and the load borne by the saddle of cable is transmitted from the saddle head to the base through the saddle body, which will cause the stress value at the junction of the rib plate and the bottom block of the saddle body to be high, that is, stress concentration phenomenon is easy to occur, which affects the long-term performance and stability of the saddle of cable. To solve this technical problem, the conventional method is to use thicker forged steel plate / ordinary steel plate to make rib plates to increase the bonding surface between the rib plates and the bottom block, that is, under the premise of meeting the support performance, a steel plate with larger thickness is still needed to make rib plates to solve the stress concentration phenomenon at the junction of the rib plates and the bottom block. Obviously, the rib plates made of steel plates with larger thickness, while meeting the support performance and reducing the stress at the junction with the bottom block, have a larger excess thickness setting, which causes material waste to some extent, and is also not conducive to the compactness and lightness of the formed saddle of cable structure. Utility model content

[0006] The technical purpose of the utility model lies in providing a light-weight swing axle type spreader according to the particularity of the swing axle type spreader and the deficiency of the prior art, which can effectively improve the stress concentration phenomenon of the rib plate and the bottom block of the saddle body and effectively reduce material waste while meeting the support performance.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] A light-weight swing axle type spreader has a saddle body with a welding structure; the saddle body includes a bottom block and a plurality of rib plates arranged in a cross direction of a bridge and a cross direction of a bridge on the bottom block and used for supporting a saddle head, and the saddle body is in a conical structure with a top longitudinal length greater than a bottom longitudinal length in the cross direction of the bridge; the rib plates constituting the saddle body are steel plates and / or forged steel plates;

[0009] The rib plate is in a splicing structure welded up and down in a height direction, has a rib plate main body segment on an upper side and a rib plate thickening segment on a lower side, the thickness of the rib plate thickening segment is greater than that of the rib plate main body segment, and the rib plate thickening segment is used for welding with the bottom block.

[0010] The above technical measures are aimed at the particularity of the swing axle type spreader, the rib plate is in a splicing structure welded up and down in a height direction, has a rib plate main body segment on an upper side and a rib plate thickening segment on a lower side, the thickness of the rib plate thickening segment is greater than that of the rib plate main body segment, and the rib plate thickening segment is used for welding with the bottom block, which can effectively improve the stress concentration phenomenon of the rib plate and the bottom block of the saddle body while meeting the support performance; the rib plate main body segment and the rib plate thickening segment can reduce the amount of material and effectively reduce material waste.

[0011] Further, the rib plate main body segment and the rib plate thickening segment of the rib plate are spliced as a whole in a full penetration welding seam structure.

[0012] In the above technical measures, the rib plate main body segment and the rib plate thickening segment of the rib plate are spliced as a whole in a full penetration welding seam structure, which can ensure the strength and sealing property of the welding seam and the connection stability of the rib plate main body segment and the rib plate thickening segment.

[0013] Further, the transition between the rib plate thickening segment and the rib plate main body segment is a smooth chamfer structure.

[0014] In the above technical measures, the transition between the rib plate thickening segment and the rib plate main body segment is a smooth chamfer structure, which can reduce stress concentration and is beneficial to prolong the service life.

[0015] Further, the maximum height of the rib plate thickening segment is 1 / 4 of the height of the rib plate.

[0016] The above technical measures can reduce the amount of material, effectively reduce material waste, and facilitate lightweight implementation while ensuring support performance by controlling the maximum height of the thickened section of the rib plate.

[0017] Further, the height of the thickened section of the rib plate is 1 / 5 of the height of the rib plate.

[0018] In the above technical measures, the height of the thickened section of the rib plate is 1 / 5 of the height of the rib plate, which reduces the amount of material, effectively reduces material waste, and facilitates lightweight implementation while ensuring support performance.

[0019] Further, the saddle body is arranged with four longitudinal rib plates at intervals in the transverse bridge direction.

[0020] Between adjacent longitudinal rib plates, at least three transverse rib plates are arranged at intervals in the longitudinal bridge direction.

[0021] The above technical measures facilitate improvement of the structural strength and stability of the saddle body, and effectively disperse loads by arranging longitudinal rib plates and transverse rib plates at intervals.

[0022] Further, the saddle body is conical in the transverse bridge direction, with the top transverse width being smaller than the bottom transverse width.

[0023] Further, the saddle head is a forged steel plate welded structure.

[0024] The above technical measures have the saddle head as a forged steel plate welded structure, which can improve the structural strength of the saddle head and facilitate reduction of the manufacturing difficulty of the saddle head.

[0025] The one or more technical solutions of the present application have at least the following technical effects or advantages:

[0026] The present application is directed to the particularity of the swing shaft type loose cable saddle, the rib plate is a spliced structure welded from top to bottom in the height direction, has a rib plate main section at the upper side and a thickened section of the rib plate at the lower side, the thickness of the thickened section of the rib plate is greater than that of the rib plate main section, and the thickened section of the rib plate is used for welding with the bottom block, while meeting the support performance, by setting the thickened section of the rib plate, the stress concentration phenomenon at the junction of the rib plate of the saddle body and the bottom block can be effectively improved; by setting the rib plate main section and the thickness of the thickened section of the rib plate being greater than that of the rib plate main section, the amount of material can be reduced, and material waste can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the embodiments of the present application, form a part of the present application, and do not constitute a limitation on the embodiments of the present application;

[0028] Fig. 1 is a structural schematic diagram of the present application;

[0029] Fig. 2 Figure 1 is a disassembled structural schematic diagram of the present application;

[0030] Fig. 3 Figure 2 is a structural schematic diagram of the joint of the main body section and the thickened section of the rib plate in the present application;

[0031] Wherein, 1 - saddle head; 2 - rib plate; 3 - main body section of rib plate, 4 - thickened section of rib plate; 5 - bottom block. DETAILED DESCRIPTION

[0032] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below in conjunction with the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0033] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from the scope described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0034] Embodiment 1

[0035] With reference to Figs. 1-3 , the embodiment provides a light weight swing axle type spreader saddle, a saddle body with a welded structure; the saddle body includes a bottom block 5 and a plurality of rib plates 2 arranged in a cross bridge direction and a transverse bridge direction on the bottom block 5 and used for supporting a saddle head 1, and the saddle body is in a conical structure with a top longitudinal length greater than a bottom longitudinal length in the cross bridge direction.

[0036] Among them, the saddle body is arranged at intervals in the transverse bridge direction with four longitudinal rib plates.

[0037] Among the adjacent longitudinal rib plates, three transverse rib plates are arranged at intervals in the cross bridge direction.

[0038] The saddle body is in a conical structure with a top transverse width less than a bottom transverse width in the transverse bridge direction.

[0039] The rib plate 2 constituting the saddle body is a steel plate; the saddle head 1 is a forged steel plate welded structure.

[0040] The rib plate 2 is a splicing structure welded up and down in the height direction, has a main body section 3 of the rib plate on the upper side and a thickened section 4 of the rib plate on the lower side, the thickness of the thickened section 4 of the rib plate is greater than that of the main body section 3 of the rib plate, and the thickened section 4 of the rib plate is used for welding with the bottom block 5.

[0041] The main body section 3 of the rib plate 2 and the thickened section 4 of the rib plate are spliced as a whole with a full penetration weld structure.

[0042] The transition between the thickened section 4 and the main section 3 of the rib plate is a smooth chamfer structure without edges.

[0043] The maximum height of the thickened section 4 of the rib plate is 1 / 4 of the height of the rib plate 2, and the height of the thickened section 4 of the rib plate is 1 / 5 of the height of the rib plate 2.

[0044] In application, the rib plate 2 is obtained by processing and forming the main section 3 and the thickened section 4 of the rib plate into a full penetration weld structure and splicing them into a whole, the saddle head 1 and the bottom block 5 are respectively processed and formed, and the rib plate 2, the saddle head 1 and the bottom block 5 are assembled according to actual requirements to form a whole structure.

[0045] Embodiment 2

[0046] The other contents of the embodiment are the same as those of Embodiment 1, except that:

[0047] The rib plate constituting the saddle body is a forged steel plate.

[0048] The saddle head is a steel plate welded structure.

[0049] The height of the thickened section of the rib plate is 1 / 6 of the height of the rib plate.

[0050] The saddle body is arranged with four longitudinal rib plates at intervals in the transverse bridge direction; and four transverse rib plates are arranged at intervals in the longitudinal bridge direction between adjacent longitudinal rib plates.

[0051] Embodiment 3

[0052] The other contents of the embodiment are the same as those of Embodiment 1, except that:

[0053] The rib plate constituting the saddle body is a forged steel plate and a steel plate.

[0054] The saddle head is a combined welded structure of a steel plate and a forged steel plate.

[0055] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all changes and modifications falling within the scope of the present application.

[0056] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A light swing axle fairlead with a saddle body of welded structure; The saddle body comprises a bottom block (5) and a plurality of rib plates (2) arranged in cross bridge direction and cross bridge direction on the bottom block (5) and used for supporting the saddle head (1), the saddle body is in the form of a tapered structure with a top length greater than a bottom length in the bridge direction; The rib plates (2) constituting the saddle body are steel plates and / or forged steel plates; Characterized in that: The rib plates (2) are in the form of a spliced structure welded from top to bottom, having a rib plate main section (3) on the upper side and a rib plate thickened section (4) on the lower side, the thickness of the rib plate thickened section (4) is greater than that of the rib plate main section (3), and the rib plate thickened section (4) is used for welding with the bottom block (5).

2. The light swing axle fairlead according to claim 1, characterized in that: The rib plate main section (3) and the rib plate thickened section (4) of the rib plate (2) are spliced into a whole in the form of a full penetration weld joint structure.

3. The light swing axle fairlead according to claim 1 or 2, characterized in that: The transition between the rib plate thickened section (4) and the rib plate main section (3) is in the form of a smooth chamfer structure.

4. The light swing axle fairlead according to claim 1 or 2, characterized in that: The maximum height of the rib plate thickened section (4) is 1 / 4 of the height of the rib plate (2).

5. The light swing axle fairlead according to claim 4, characterized in that: The height of the rib plate thickened section (4) is 1 / 5 of the height of the rib plate (2).

6. The light swing axle fairlead according to claim 1, characterized in that: The saddle body is arranged with four longitudinal rib plates in the cross bridge direction; At least three transverse rib plates are arranged in the bridge direction between adjacent longitudinal rib plates.

7. The light swing axle fairlead according to claim 1 or 6, characterized in that: The saddle body is in the form of a tapered structure with a top width less than a bottom width in the cross bridge direction.

8. The light swing axle fairlead according to claim 1, characterized in that: The saddle head (1) is in the form of a forged steel plate welded structure.

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