An offshore super-large cofferdam overall lowering and fine adjustment device

Abstract

The utility model provides a kind of offshore super-large cofferdam integral lowering fine adjustment device, including steel casing and fine adjustment mechanism, the one end of fine adjustment mechanism is connected with the inner wall of steel casing, and the other end is towards steel sleeve box cofferdam inner side;The inside of steel casing is provided with operating platform, and the fine adjustment mechanism is located on the operating platform;The fine adjustment mechanism includes reinforcing component, jack, top rod, the reinforcing component is fixed on the operating platform, one end of the jack is connected with the reinforcing component, and the other end is connected with the top rod, and the end of the top rod is provided with fine adjustment component.The fine adjustment component of the offshore super-large cofferdam integral lowering fine adjustment device can accurately and conveniently adjust the plane position of steel sleeve box cofferdam, ensure that steel sleeve box cofferdam is accurately lowered in place, so as to ensure the construction quality of bridge foundation, and is suitable for offshore large bridge foundation construction steel sleeve box cofferdam construction.

Description

Technical Field

[0001] This utility model belongs to the field of bridge construction, and in particular relates to a fine-tuning device for the overall lowering of a super-large marine cofferdam. Background Technology

[0002] In the construction of large-scale offshore bridges, steel cofferdams are commonly used for the construction of bridge pile foundation caps. After the pile group construction is completed, steel cofferdams are designed and lowered at the corresponding cap locations to provide working space for subsequent foundation cap construction. However, after the steel cofferdams are lowered, it cannot be guaranteed that the steel cofferdams will accurately reach the designed position, requiring subsequent fine-tuning. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a fine-tuning device for the overall lowering of a super-large marine cofferdam.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A fine-tuning device for the overall lowering of a super-large offshore cofferdam includes a steel casing and a fine-tuning mechanism. One end of the fine-tuning mechanism is connected to the inner wall of the steel casing, and the other end faces the inner side of the steel casing cofferdam.

[0006] An operating platform is provided on the inner side of the steel casing, and the fine-tuning mechanism is located on the operating platform;

[0007] The fine-tuning mechanism includes a reinforcement component, a jack, and a top rod. The reinforcement component is fixed to the operating platform. One end of the jack is connected to the reinforcement component, and the other end is connected to the top rod. The end of the top rod is provided with a fine-tuning component.

[0008] Furthermore, the fine-tuning assembly includes a top sleeve, a fixing frame, a limiting sleeve, and a limiting component. The fixing frame is connected to the top rod, and a connecting shaft is provided on the fixing frame. The top sleeve is fitted onto the outside of the connecting shaft, and a reinforcing groove is provided on one side of the top sleeve. The bottom of the limiting component is connected to the top rod, and a connecting rod is provided on the top of the limiting component. The limiting sleeve is fitted onto the outside of the connecting rod, and a nut is provided on the top of the connecting rod. The connecting shaft is mounted on the fixing frame and secured at both ends with nuts. The limiting component is placed within the reinforcing groove to synchronously limit the movement of the top sleeve.

[0009] Furthermore, a lower limiting groove is formed on the upper part of one side of the limiting member, and an upper limiting groove is formed on the lower part of one side of the limiting sleeve. The combination of the upper and lower limiting grooves cooperates with the connecting shaft. The upper and lower limiting grooves limit the connecting shaft, clamping it to prevent the top sleeve from loosening and smoothly achieving the fine-tuning function of the fine-tuning mechanism.

[0010] Furthermore, one side of the top sleeve has an arc-shaped structure.

[0011] Furthermore, the reinforcement component includes a reinforcement member and a support block. The reinforcement member is fixed to the operating platform and connected to the jack. The reinforcement member is provided with reinforcing ribs. One end of the support block is connected to the reinforcement member, and the other end is connected to the inner wall of the steel casing. The reinforcement component enables the steel casing and the operating platform to jointly provide support for the fine-tuning component, ensuring its stability.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] The overall lowering and fine-tuning device for ultra-large offshore cofferdams described in this utility model is equipped with a reinforcement component and a fine-tuning component. The reinforcement component provides stable support for the fine-tuning component, and the fine-tuning component can accurately and conveniently adjust the planar position of the steel cofferdam to ensure that the steel cofferdam is accurately lowered into place, thereby ensuring the construction quality of the bridge foundation. It is suitable for the construction of steel cofferdams for the foundation construction of large offshore bridges. Attached Figure Description

[0014] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0015] Figure 1 This is a schematic diagram of the steel cofferdam described in an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the fine-tuning mechanism described in an embodiment of the present utility model;

[0017] Figure 3 This is a top view of the fine-tuning component described in an embodiment of the present invention;

[0018] Figure 4 This is a side view of the connection shaft and the limiting member cooperating as described in an embodiment of this utility model;

[0019] Figure 5 This is a schematic diagram of the reinforcement component described in an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Steel casing cofferdam; 2. Steel casing; 3. Fine-tuning mechanism; 4. Reinforcing components; 5. Jack; 6. Top rod; 7. Fine-tuning components; 8. Operating platform; 41. Reinforcing parts; 42. Reinforcing ribs; 43. Support block; 71. Top sleeve; 72. Connecting shaft; 73. Fixing frame; 74. Reinforcing groove; 75. Nut; 76. Limiting sleeve; 77. Limiting component; 78. Connecting rod; 79. Lower limit groove; 710. Upper limit groove. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figure 1-5As shown, a fine-tuning device for the overall lowering of a super-large offshore cofferdam includes a steel casing 2 and a fine-tuning mechanism 3. One end of the fine-tuning mechanism 3 is connected to the inner wall of the steel casing 2, and the other end faces the inner side of the steel casing cofferdam 1. An operating platform 8 is provided on the inner side of the steel casing 2, and the fine-tuning mechanism 3 is located on the operating platform 8. The fine-tuning mechanism 3 includes a reinforcing component 4, a jack 5, and a jacking rod 6. The reinforcing component 4 is fixed to the operating platform 8. One end of the jack 5 is connected to the reinforcing component 4, and the other end is connected to the jacking rod 6. A fine-tuning component 7 is provided at the end of the jacking rod 6.

[0027] The fine-tuning assembly 7 includes a top sleeve 71, a fixing frame 73, a limiting sleeve 76, and a limiting member 77. The fixing frame 73 is connected to the top rod 6, and a connecting shaft 72 is provided on the fixing frame 73. The top sleeve 71 is fitted onto the outside of the connecting shaft 72, and a reinforcing groove 74 is provided on one side of the top sleeve 71. The bottom of the limiting member 77 is connected to the top rod 6, and a connecting rod 78 is provided on the top of the limiting member 77. The limiting sleeve 76 is fitted onto the outside of the connecting rod 78, and a nut 75 is provided on the top of the connecting rod 78. The limiting member 77 is placed in the reinforcing groove 74 to synchronously limit the movement of the top sleeve 71. The connecting shaft 72 is mounted on the fixing frame 73 and fixed at both ends with nuts 75.

[0028] The limiting member 77 has a lower limiting groove 79 on one upper side, and the limiting sleeve 76 has an upper limiting groove 710 on one lower side. The combination of the upper limiting groove 710 and the lower limiting groove 79 cooperates with the connecting shaft 72. The upper limiting groove 710 and the lower limiting groove 79 limit the connecting shaft 72, clamping it to prevent the top sleeve 71 from loosening and smoothly achieving the fine adjustment function of the fine adjustment mechanism 3. One side of the top sleeve 71 has an arc-shaped structure.

[0029] The reinforcement component 4 includes a reinforcement member 41 and a support block 43. The reinforcement member 41 is fixed to the operating platform 8 and connected to the jack 5. The reinforcement member 41 is provided with reinforcing ribs 42. One end of the support block 43 is connected to the reinforcement member 41, and the other end is connected to the inner wall of the steel casing 2. The reinforcement component 4 enables the steel casing 2 and the operating platform 8 to jointly provide support for the fine-tuning component 7, ensuring the stability of the fine-tuning component 7.

[0030] Before lowering the steel casing, install the reinforcing component 4 to fix the position of the jacks 5. Then, adjust the fine-tuning component 7 to adjust the positions of the limiting piece 77 and the limiting sleeve 76, so that the limiting piece 77 and the limiting sleeve 76 stably limit the connecting shaft 72. Then, tighten the nut 75 to fix the structure of the fine-tuning component 7. During the lowering of the steel casing, monitor its planar position for any deviation. If a deviation occurs, adjust the planar position of the steel casing by adjusting the extension and retraction of each jack 5. After the steel casing is lowered into place, re-measure its installation accuracy. If there is any deviation, adjust the steel casing again by adjusting the extension and retraction of each jack 5 until the steel casing achieves the required installation accuracy.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for fine-tuning the overall lowering of a super-large offshore cofferdam, characterized in that: It includes a steel casing and a fine-tuning mechanism, one end of which is connected to the inner wall of the steel casing, and the other end faces the inner side of the steel casing cofferdam. An operating platform is provided on the inner side of the steel casing, and the fine-tuning mechanism is located on the operating platform; The fine-tuning mechanism includes a reinforcement component, a jack, and a top rod. The reinforcement component is fixed to the operating platform. One end of the jack is connected to the reinforcement component, and the other end is connected to the top rod. The end of the top rod is provided with a fine-tuning component.

2. The overall lowering and fine-tuning device for ultra-large marine cofferdams according to claim 1, characterized in that: The fine-tuning assembly includes a top sleeve, a fixing frame, a limiting sleeve, and a limiting component. The fixing frame is connected to the top rod, and a connecting shaft is provided on the fixing frame. The top sleeve is fitted onto the outside of the connecting shaft, and a reinforcing groove is provided on one side of the top sleeve. The bottom of the limiting component is connected to the top rod, and a connecting rod is provided on the top of the limiting component. The limiting sleeve is fitted onto the outside of the connecting rod, and a nut is provided on the top of the connecting rod.

3. The overall lowering and fine-tuning device for ultra-large marine cofferdams according to claim 2, characterized in that: The limiting member has a lower limiting groove on one side of its upper part, and the limiting sleeve has an upper limiting groove on one side of its lower part. The combination of the upper limiting groove and the lower limiting groove cooperates with the connecting shaft.

4. The overall lowering and fine-tuning device for ultra-large marine cofferdams according to claim 3, characterized in that: One side of the top sleeve has an arc-shaped structure.

5. The overall lowering and fine-tuning device for ultra-large marine cofferdams according to claim 1, characterized in that: The reinforcement component includes a reinforcement member and a support block. The reinforcement member is fixed to the operating platform and connected to the jack. The reinforcement member is provided with reinforcing ribs. One end of the support block is connected to the reinforcement member, and the other end is connected to the inner wall of the steel casing.

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