Underwater non-welding hanging box cofferdam hoop type plugging device

Abstract

The utility model provides an underwater non-welding hanging box cofferdam hoop type plugging device, which relates to the field of cofferdam construction, is used for plugging a reserved gap between a steel casing and a cofferdam bottom plate, and comprises a plurality of groups of plugging mechanisms which are spliced and connected, each plugging mechanism comprises a plugging sector plate and a sliding assembly, the plugging sector plates slide towards the steel casing through the multiple sets of sliding assemblies until the plugging sector plates of the multiple sets of plugging mechanisms are spliced to form a plugging ring of a hollow circular structure, every two adjacent plugging sector plates are fixedly connected in a sealed mode through fastening bolts, the plugging ring plugs the reserved gap, underwater welding operation is not needed, the reserved gap can be rapidly plugged, and the plugging efficiency is improved. The construction period is shortened, the construction difficulty is reduced, underwater welding operation is avoided, the operation risk and the mechanical equipment cost are effectively reduced, the application range is wide, the economical efficiency and safety of the construction process are greatly improved, and good engineering use value is achieved.

Description

Technical Field

[0001] The utility model relates to the field of cofferdam construction, in particular to a hoop-type plugging device for a suspended cofferdam with underwater non-welding. Background Art

[0002] The suspended cofferdam is suitable for the situation where the bottom surface of the bearing platform is at a relatively high distance from the riverbed surface, or there is a relatively thick soft soil layer below the bearing platform. At present, the sizes of large bridge deep-water bearing platforms are relatively large. In order to realize dry construction of the bearing platform and use the suspended cofferdam for the construction of the bearing platform, there are more and more construction methods for deep-water bearing platforms in China, each with its own advantages. When using the suspended cofferdam for construction, it can be fabricated on the shore. In deep water, a hoisting ship or a jack is used to suspend the assembled integral suspended cofferdam with a crossbeam inside on the top of the positioning pile columns, and then underwater concrete is poured for bottom sealing. After pumping out the water, the bearing platform concrete is poured.

[0003] In order to ensure the hoisting construction of the suspended cofferdam, a certain safety gap needs to be reserved between the steel casing of the suspended cofferdam and the cofferdam bottom plate. After the hoisting is completed, it is necessary to specially arrange divers to complete the plugging of the reserved gap. At present, underwater welding is generally used in China to install the plugging plate. This method requires underwater welding, with a long construction time, high safety risks, great operation difficulty, inconvenient construction, and it is difficult to guarantee the construction quality and inconvenient for quality inspection. At present, there is less research on the underwater non-welding installation of the plugging plate for the suspended cofferdam of the deep-water high-pile bearing platform of large-span cross-sea bridges. However, with the rapid development of cross-sea bridges, it is a very necessary innovative work to invent a plugging plate for the suspended cofferdam with wide applicability and underwater non-welding installation. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies existing in the prior art and provide a hoop-type plugging device for a suspended cofferdam with underwater non-welding. This patent realizes the shortening of the construction period and the reduction of the construction difficulty, avoids underwater welding operations, effectively reduces the operation risks and mechanical equipment costs, has a wide application range, greatly improves the economy and safety of the construction process, and has good engineering application value.

[0005] The utility model is realized through the following technical solutions:

[0006] A hoop-type plugging device for a suspended cofferdam with underwater non-welding is used to plug the reserved gap between the steel casing and the cofferdam bottom plate. It includes multiple groups of spliced plugging mechanisms. The plugging mechanism includes a plugging fan plate and a sliding component. The plugging fan plate is slidably connected to the upper surface of the cofferdam bottom plate through multiple groups of sliding components. A reserved gap is provided between the inner side of the cofferdam bottom plate and the steel casing. The plugging fan plates of multiple groups of plugging mechanisms are spliced to form a plugging ring with a hollow circular structure. Two adjacent plugging fan plates are hermetically and fixedly connected through fastening bolts. The inner side of the plugging ring abuts against the outer wall of the steel casing, and the outer side of the plugging ring is fixed on the cofferdam bottom plate. The plugging ring plugs the reserved gap.

[0007] It can be seen that in the above technical solution, the staff pre-arranges the plugging fan plates on the cofferdam bottom plate, and at this time the plugging device is in an open state; when plugging the reserved gap, the plugging fan plates slide towards the steel casing through multiple sets of sliding components until the plugging fan plates of multiple sets of plugging mechanisms are spliced to form a plugging ring with a hollow circular structure, and the adjacent plugging fan plates are hermetically fixedly connected by fastening bolts. At this time, the inner side of the plugging ring abuts against the outer wall of the steel casing, and the outer side of the plugging ring is fixed on the cofferdam bottom plate. The plugging ring plugs the reserved gap, eliminating the need for underwater welding operations, and can quickly plug the reserved gap. This patent realizes the shortening of the construction period and the reduction of the construction difficulty, avoids underwater welding operations, effectively reduces the operation risk and the mechanical equipment cost, has a wide application range, greatly improves the economy and safety of the construction process, and has good engineering application value.

[0008] According to the above technical solution, preferably, the sliding component includes a strip-shaped slide rail fixed on the cofferdam bottom plate, and the lower surface of the plugging fan plate is provided with a strip-shaped chute adapted to the strip-shaped slide rail. The central axes of the strip-shaped slide rail and the strip-shaped chute are perpendicular to the central axis of the steel casing.

[0009] It can be seen that in the above technical solution, the central axes of the strip-shaped slide rail and the strip-shaped chute are perpendicular to the central axis of the steel casing, and the strip-shaped slide rail and the strip-shaped chute cooperate to enable the staff to quickly drive the heavy plugging fan plate to move in place.

[0010] According to the above technical solution, preferably, the longitudinal cross-sections of the strip-shaped slide rail and the strip-shaped chute are inverted T-shaped cross-sections.

[0011] It can be seen that in the above technical solution, since the longitudinal cross-sections of the strip-shaped slide rail and the strip-shaped chute are inverted T-shaped cross-sections, the strip-shaped slide rail can effectively support and limit the plugging fan plate.

[0012] According to the above technical solution, preferably, the plugging mechanism further includes an auxiliary closing component. The auxiliary closing component includes a push plate, a jack and a clamping plate. The push plate is fixedly connected to the back side of the plugging fan plate, the clamping plate is fixedly connected to the cofferdam bottom plate, and both ends of the jack abut against the clamping plate and the push plate.

[0013] It can be seen that in the above technical solution, the auxiliary closing component is used to push the heavy plugging fan plate to move in place, facilitating underwater operations and reducing the work difficulty of construction workers.

[0014] According to the above technical solution, preferably, the auxiliary closing component further includes a locking unit. The locking unit includes a strip-shaped toothed plate and a locking block. The locking block is hingedly connected to the side of the push plate. The strip-shaped toothed plate is fixedly connected to the cofferdam bottom plate. The central axis of the strip-shaped toothed plate is perpendicular to the central axis of the steel casing, and the lower end of the locking block abuts against the strip-shaped toothed plate.

[0015] It can be seen that in the above technical solution, after the plugging fan plate moves into place, the lower end of the locking block abuts against the strip-shaped toothed plate, thereby preventing the plugging fan plate from sliding and facilitating the staff to operate other plugging mechanisms.

[0016] According to the above technical solution, preferably, the locking unit further includes a tension spring disposed between the push plate and the locking block, and both ends of the tension spring are respectively connected to the push plate and the locking block.

[0017] According to the above technical solution, preferably, the jack is a scissor jack, and both ends of the scissor jack are detachably connected to the push plate and the clamping plate respectively.

[0018] According to the above technical solution, preferably, a sealing strip is provided on the inner side of the plugging fan plate.

[0019] The beneficial effects of the present utility model are:

[0020] (1) The staff pre-arranges the plugging fan plate on the cofferdam bottom plate, and at this time the plugging device is in an open state; when plugging the reserved gap, the plugging fan plate slides towards the steel casing through multiple sets of sliding components until the plugging fan plates of multiple sets of plugging mechanisms are spliced to form a plugging ring with a hollow circular structure, and two adjacent plugging fan plates are hermetically fixedly connected by fastening bolts. At this time, the inner side of the plugging ring abuts against the outer wall of the steel casing, and the outer side of the plugging ring is fixed on the cofferdam bottom plate, and the plugging ring plugs the reserved gap, eliminating the need for underwater welding operations and being able to quickly plug the reserved gap;

[0021] (2) This patent realizes shortening the construction period and reducing the construction difficulty, avoiding underwater welding operations, effectively reducing the operation risk and mechanical equipment cost, having a wide range of applications, greatly enhancing the economy and safety of the construction process, and having good engineering application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shows an isometric structural schematic diagram according to an embodiment of the present utility model;

[0023] Figure 2 Shows an isometric structural schematic diagram of the steel casing and the cofferdam bottom plate;

[0024] Figure 3 Shows Figure 1 The detailed structural schematic diagram of the local part A in

[0025] Figure 4 Shows a top view structural schematic diagram according to an embodiment of the present utility model;

[0026] Figure 5 Shows a front view structural schematic diagram according to an embodiment of the present utility model;

[0027] DESCRIPTION OF THE REFERENCE NUMERALS:

[0028] 1. Steel casing; 2. Cofferdam bottom plate; 3. Sealing mechanism; 4. Sealing fan plate; 5. Sliding assembly; 6. Reserved gap; 7. Sealing ring; 8. Fastening bolt; 9. Strip-shaped slide rail; 10. Auxiliary closing assembly; 11. Push plate; 12. Jack; 13. Clamping plate; 14. Locking unit; 15. Strip-shaped toothed plate; 16. Locking block. Detailed implementation manner

[0029] In order to enable those skilled in the art of the present technology to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and the best embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the utility model.

[0030] In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the utility model.

[0031] As shown in the figure, the present utility model provides an underwater non-welded suspension box cofferdam hoop-type sealing device for sealing the reserved gap 6 between the steel casing 1 and the cofferdam bottom plate 2. It includes multiple groups of spliced and connected sealing mechanisms 3, and the sealing mechanism 3 includes a sealing fan plate 4 and a sliding assembly 5. The sealing fan plate 4 is slidably connected to the upper surface of the cofferdam bottom plate 2 through multiple groups of sliding assemblies 5. A reserved gap 6 is provided between the inner side of the cofferdam bottom plate 2 and the steel casing 1. The sealing fan plates 4 of multiple groups of sealing mechanisms 3 are spliced to form a hollow circular sealing ring 7. The adjacent sealing fan plates 4 are hermetically and fixedly connected by fastening bolts 8. The inner side of the sealing ring 7 abuts against the outer wall of the steel casing 1, and the outer side of the sealing ring 7 is fixed on the cofferdam bottom plate 2. The sealing ring 7 seals the reserved gap 6. The sliding assembly 5 includes a strip-shaped slide rail 9 fixed on the cofferdam bottom plate 2. The lower surface of the sealing fan plate 4 is provided with a strip-shaped chute adapted to the strip-shaped slide rail 9. The central axes of the strip-shaped slide rail 9 and the strip-shaped chute are perpendicular to the central axis of the steel casing 1. The cooperation of the strip-shaped slide rail 9 and the strip-shaped chute enables the staff to quickly drive the heavy sealing fan plate 4 to move in place. The longitudinal sections of the strip-shaped slide rail 9 and the strip-shaped chute are inverted T-shaped sections, so that the strip-shaped slide rail 9 can effectively support and limit the sealing fan plate 4.

[0032] The staff pre - arranges the plugging fan plate 4 on the cofferdam bottom plate 2, and at this time the plugging device is in an open state; when plugging the reserved gap 6, the plugging fan plate 4 slides towards the steel casing 1 through multiple sets of sliding components 5 until the plugging fan plates 4 of multiple sets of plugging mechanisms 3 are spliced to form a plugging ring 7 with a hollow circular structure, and two adjacent plugging fan plates 4 are hermetically and fixedly connected by fastening bolts 8. At this time, the inner side of the plugging ring 7 abuts against the outer wall of the steel casing 1, the outer side of the plugging ring 7 is fixed on the cofferdam bottom plate 2, and the plugging ring 7 plugs the reserved gap 6. There is no need for underwater welding operation, and the reserved gap 6 can be quickly plugged. This patent realizes the shortening of the construction period and the reduction of the construction difficulty, avoids underwater welding operation, effectively reduces the operation risk and the mechanical equipment cost, has a wide application range, greatly improves the economy and safety of the construction process, and has good engineering application value.

[0033] Optionally, in a possible implementation manner, the plugging mechanism 3 further includes an auxiliary closing component 10. The auxiliary closing component 10 includes a push plate 11, a jack 12 and a clamping plate 13. The push plate 11 is fixedly connected to the back side of the plugging fan plate 4, the clamping plate 13 is fixedly connected to the cofferdam bottom plate 2, and both ends of the jack 12 abut against the clamping plate 13 and the push plate 11. The auxiliary closing component 10 is used to push the heavy plugging fan plate 4 into place, facilitating underwater operation and reducing the work difficulty of construction workers.

[0034] Optionally, in a possible implementation manner, the auxiliary closing component 10 further includes a locking unit 14. The locking unit 14 includes a strip - shaped toothed plate 15 and a lock block 16. The lock block 16 is hingedly connected to the side of the push plate 11, the strip - shaped toothed plate 15 is fixedly connected to the cofferdam bottom plate 2, the central axis of the strip - shaped toothed plate 15 is perpendicular to the central axis of the steel casing 1, and the lower end of the lock block 16 abuts against the strip - shaped toothed plate 15. When the plugging fan plate 4 moves into place, the lower end of the lock block 16 abuts against the strip - shaped toothed plate 15, thereby preventing the plugging fan plate 4 from sliding and facilitating the staff to operate other plugging mechanisms 3.

[0035] Optionally, in a possible implementation manner, the locking unit 14 further includes a tension spring. The tension spring is arranged between the push plate 11 and the lock block 16, and both ends of the tension spring are respectively connected to the push plate 11 and the lock block 16.

[0036] Optionally, in a possible implementation manner, the jack 12 is a scissor jack, and both ends of the scissor jack are detachably connected to the push plate 11 and the clamping plate 13 respectively.

[0037] Optionally, in a possible implementation manner, a sealing rubber strip is provided on the inner side of the plugging fan plate 4. The sealing rubber strip can effectively increase the friction between the plugging fan plate 4 and the steel casing 1 and enhance the sealing effect.

[0038] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or alterations derived therefrom still fall within the protection scope of the present invention.

Claims

1. An underwater non-welded hanging box cofferdam clamp type plugging device, used to plug the reserved gap between the steel casing and the cofferdam bottom plate, characterized in that: It comprises a plurality of groups of spliced ​​and connected sealing mechanisms, the sealing mechanisms comprising sealing fan plates and sliding components, the sealing fan plates being slidably connected to the upper surface of the cofferdam bottom plate through the plurality of groups of sliding components, a reserved gap being arranged between the inner side of the cofferdam bottom plate and the steel casing, the plurality of groups of sealing fan plates of the sealing mechanisms being spliced ​​together to form a sealing ring of a hollow circular structure, the two adjacent sealing fan plates being sealed and fixedly connected by fastening bolts, the inner side of the sealing ring being against the outer wall of the steel casing, the outer side of the sealing ring being fixed to the cofferdam bottom plate, the sealing ring sealing the reserved gap.

2. The underwater non-welded hanging box cofferdam clamp-type plugging device according to claim 1 is characterized in that: The sliding assembly includes a strip slide rail fixed on the cofferdam bottom plate, and the lower surface of the blocking fan plate is provided with a strip slide groove matched with the strip slide rail. The central axis of the strip slide rail and the strip slide groove is perpendicular to the central axis of the steel casing.

3. The underwater non-welded hanging box cofferdam clamp-type plugging device according to claim 2 is characterized in that: The longitudinal sections of the strip-shaped slide rail and the strip-shaped slide groove are inverted T-shaped sections.

4. The underwater non-welded hanging box cofferdam clamp-type plugging device according to claim 3 is characterized in that: The blocking mechanism also includes an auxiliary blocking component, which includes a push plate, a jack and a clamping plate. The push plate is fixedly connected to the back side of the blocking fan plate, the clamping plate is fixedly connected to the cofferdam bottom plate, and the two ends of the jack are against the clamping plate and the push plate.

5. The underwater non-welded hanging box cofferdam clamp-type plugging device according to claim 4 is characterized in that: The auxiliary sealing assembly also includes a locking unit, which includes a bar tooth plate and a locking block. The locking block is hingedly connected to the side of the push plate, and the bar tooth plate is fixedly connected to the cofferdam bottom plate. The central axis of the bar tooth plate is perpendicular to the central axis of the steel casing, and the lower end of the locking block is against the bar tooth plate.

6. The underwater non-welded hanging box cofferdam clamp-type plugging device according to claim 5 is characterized in that: The locking unit further comprises a tension spring, which is arranged between the push plate and the locking block, and two ends of the tension spring are respectively connected to the push plate and the locking block.

7. The underwater non-welded hanging box cofferdam clamp-type plugging device according to claim 4 is characterized in that: The jack is a scissor-type jack, and two ends of the scissor-type jack are detachably connected to the push plate and the clamping plate respectively.

8. The underwater non-welded hanging box cofferdam clamp-type plugging device according to claim 1 is characterized in that: A sealing strip is arranged on the inner side of the sealing fan plate.

Images