A sinking well steel form for deep water concrete cushion pouring

Abstract

The application discloses a sinking well steel formwork for deep water concrete cushion pouring, which comprises a module, a support assembly, a clamping assembly and a reset lug; a plurality of modules are arranged side by side in the width direction to enclose a concrete pouring space, and any two modules have a relative sliding freedom in the length direction; the support assembly is sleeved on the top of the module and extends downward on the inner and outer sides to embrace the upper half of the module and provide lateral constraint for the module; the clamping assembly is arranged on the outer side of the module and comprises a fixed clamping piece, a movable clamping piece and a linkage; one fixed clamping piece is arranged on the outer side of each module, and a plurality of groups of movable clamping pieces are arranged on the bottom of the support assembly and work in cooperation with the fixed clamping piece; when the movable clamping piece clamps the fixed clamping piece, the module is fixed at an initial position, and when the movable clamping piece is disengaged from the fixed clamping piece, the module slides downward under the action of gravity; the linkage enables two adjacent groups of movable clamping pieces to work in linkage cooperation; and one reset lug is arranged on the outer side of each module.

Description

Technical Field

[0001] This invention relates to the field of construction technology, and in particular to a steel formwork for caissons used in deep-water concrete block casting. Background Technology

[0002] When casting concrete blocks on uneven, deep-water soil and rock layers, the erection of formwork is a major challenge. Simply placing traditional casting formwork directly on the soil and rock layer fails to meet construction requirements in terms of verticality and sealing. Leveling the casting surface of the blocks beforehand using methods such as blasting or excavation requires significant manpower and resources and may be hampered by geological conditions, resulting in less than ideal leveling outcomes. Chinese patent CN1 16677188A discloses a prefabricated adaptive aluminum formwork for uneven ground, offering a new approach to casting concrete components on uneven surfaces. However, the formwork's construction is quite delicate and complex, unsuitable for underwater operations, and some components malfunction in aquatic environments, thus rendering it unsuitable for deep-water conditions. Summary of the Invention

[0003] The main technical problem to be solved by the present invention is to provide a template for casting deep-water concrete blocks, which can be erected on uneven deep-water rock and soil layers, providing a space that is closed at the bottom and sides for concrete casting, and can be reused.

[0004] To solve the above-mentioned technical problems, the present invention provides a caisson steel formwork for deep-water concrete pad block casting, including a module, a support assembly, a positioning assembly, and a reset ear;

[0005] Several modules are arranged side by side in the width direction to enclose a space for concrete casting; any two modules have a degree of freedom to slide relative to each other in the length direction.

[0006] The support assembly is sleeved on the top of the module and extends downward on both the inner and outer sides to embrace the upper half of the module, providing lateral constraint to the module.

[0007] The locking assembly is located on the outside of the module and includes a fixed locking member, a movable locking member, and a linkage member. A fixed locking member is located on the outside of each module segment, and several sets of movable locking members are located at the bottom of the support assembly, cooperating with the fixed locking members: when the movable locking member engages with the fixed locking member, the module is fixed in its initial position; when the movable locking member disengages from the fixed locking member, the module can slide down under gravity. The linkage member enables interlocking cooperation between adjacent sets of movable locking members.

[0008] A reset ear is provided on the outside of each segment of the module.

[0009] In a preferred embodiment, the bracket assembly includes an inner ring bracket, an outer ring bracket, and a bracket connector; the inner ring bracket is disposed on the inner side of the module; the outer ring bracket is disposed on the outer side of the module and extends downward to the height of the fixing clip; the inner ring bracket and the outer ring bracket are connected at the top by the bracket connector.

[0010] In a preferred embodiment, the bracket connector is a U-shaped steel plate, which is spaced apart and sleeved on the top of the inner ring bracket and the outer ring bracket. The two wings of the U-shaped steel plate are located on the inner side of the inner ring bracket and the outer side of the outer ring bracket, respectively.

[0011] In a preferred embodiment, a lug is provided at the top of the support assembly.

[0012] In a preferred embodiment, the movable latch includes a fixed frame, a movable block, a reset component, and a switch; the fixed frame is connected to the bracket assembly and is used to mount the movable block, the reset component, and the switch; the reset component causes the movable block to engage with the fixed latch in a limiting engagement; the switch allows the movable block to move, thereby releasing the limiting engagement between the movable block and the fixed latch.

[0013] In a preferred embodiment, a fixing frame is provided at the bottom of the outer ring bracket corresponding to the position of the fixing clip; a clearance channel is provided on the fixing frame, and the extension direction of the clearance channel is perpendicular to the module; the reset member is sleeved on the movable block and passes through the clearance channel together; the switch is a reversing mechanism, the input end is in a free state, the output end is connected to the movable block, and the reversing shaft passes through the fixing frame.

[0014] In a preferred embodiment, a pre-tightening reset member is provided in the clearance channel. One end of the reset member is connected to the movable block, and the other end abuts against or is fixed to the end of the clearance channel away from the module. The rebound force of the pre-tightening reset member causes the movable block to abut against the stop block or the module at the bottom of the stop block, thereby limiting the fixing member in the vertical direction.

[0015] In a preferred embodiment, the reversing shaft of the switch can convert the rotation of the input end to the horizontal movement of the output end, and the horizontal movement of the output end can cause the movable block to release the limiting engagement with the fixed card.

[0016] In a preferred embodiment, one end of the linkage is welded to the surface of the module, and the other end is located above the adjacent movable card; when the linkage moves downward, it can cause the adjacent movable card to disengage from the fixed card.

[0017] In a preferred embodiment, a guide wheel is provided on the outer side of each segment of the module along the length direction; the guide wheel is connected and mounted on the bracket assembly.

[0018] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0019] The caisson steel formwork provided by the present invention sets the side formwork as a segmented structure. By utilizing the adaptive sinking of the segmented side formwork, a casting space that is closed at the bottom and sides can still be set up on uneven deep water rock and soil layers.

[0020] The caisson steel formwork provided by this invention adopts a linkage switch, which allows construction personnel to lower the modules in batches by simply flipping a set of switches, thereby reducing the labor intensity of underwater construction and improving construction accuracy and efficiency.

[0021] The caisson steel formwork provided by this invention is easy to reset and reclaim after the concrete is poured, and can be reused. Attached Figure Description

[0022] Figure 1 This is a perspective view of the caisson steel formwork according to a preferred embodiment of the present invention;

[0023] Figure 2 This is a top view of the caisson steel formwork according to a preferred embodiment of the present invention;

[0024] Figure 3 This is a front view of the steel module after it has been lowered in a preferred embodiment of the present invention;

[0025] Figure 4 This is a three-dimensional schematic diagram of the card slot assembly in a preferred embodiment of the present invention.

[0026] The components in the diagram are labeled as follows: 1-steel module, 2-bracket assembly, 3-positioning assembly, 4-reset ear, 5-lifting ear, 6-wool guide wheel, 7-soil layer; 21-inner ring bracket, 22-outer ring bracket, 23-U-shaped steel plate, 31-stop block, 32-moving clip, 33-linkage rod; 321-fixed frame, 322-moving rod, 323-switch, 324-preload spring; In switch 323, 323-1 is the input terminal, 323-2 is the output terminal, and 323-3 is the reversing shaft. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0030] like Figure 1 As shown, this preferred embodiment provides a caisson steel formwork for deep-water concrete pad casting, including a steel module 1, a support assembly 2, a positioning assembly 3, and a reset lug 4. The support assembly 2 includes an inner ring support 21, an outer ring support 22, and a U-shaped steel plate 23. The positioning assembly 3 includes a movable locking element 32 and a stop block 31. In this preferred embodiment, a woolen guide wheel 6 is also provided on the surface of the steel module 1.

[0031] like Figure 1 and Figure 3 As shown, in this preferred embodiment, the steel module 1 consists of several steel plates of equal length. The steel modules 1 are arranged side-by-side in the width direction, enclosing a space for concrete pouring. The steel module 1 is 1000mm long and 100mm wide. Figure 3 As shown, during the operation of the template, after the vertical restraint is released, any segment of the steel module 1 slides down under the influence of gravity until it touches the bottom of the rock and soil layer 7. Since any two segments of the steel module 1 only overlap laterally, they still have relative sliding freedom in the length direction, thus allowing each segment of the steel module 1 to have different final displacements. Therefore, under the enveloping support of the support assembly 2, the steel modules 1 can form a casting space adapted to the uneven rock and soil layer 7 at the bottom of the water.

[0032] like Figure 1 and Figure 2As shown, in this preferred embodiment, both the outer ring support 22 and the inner ring support 21 are welded from several square steel pipes. The inner ring support 21 is located inside the steel module 1, and the outer ring support 22 is located outside the steel module 1, with its top flush with the top of the steel module 1. The vertical height of the inner ring support 21 is 500mm, while the bottom of the outer ring support 22 extends downward to the height of the stop block 31 and protrudes outward at a certain angle. U-shaped steel plates 23 are spaced and fitted onto the top of the outer ring support 22 and the inner ring support 21. The two wings of one U-shaped steel plate 23 are located on the inner side of the inner ring support 21 and the outer side of the outer ring support 22, respectively, so that the inner ring support 21 and the outer ring support 22 hug the upper part of the steel module 1. The inner ring support 21 and the outer ring support 22 only provide lateral restraint to the steel module 1 and do not fasten the steel module 1, so they do not affect the sliding of the steel module 1 under the action of gravity.

[0033] Several lifting lugs 5 are welded at intervals along the length of the top of the support assembly 2, facilitating the use of wire ropes to hoist the template during construction. In this preferred embodiment, the lifting lugs 5 are made of two sections of angle steel welded to the top of the inner ring support 21 and the outer ring support 22, and are provided with clearance holes for the passage of wire ropes.

[0034] like Figure 4 As shown, a stop block 31 is welded at the same height on each section of the steel module 1. The stop block 31 serves as the fixing clip of the positioning assembly 3. Several movable clips 32 are installed at the bottom of the outer ring bracket 22. The installation position of each movable clip 32 corresponds one-to-one with the position of the stop block 31 on the steel module 1. The movable clip 32 includes a fixing frame 321, a movable rod 322, a switch 323, and a preload spring 324. A clearance channel is provided in the fixing frame 321. The clearance channel is perpendicular to the plate surface of the steel module 1, and its horizontal projection on the steel module 1 is exactly located at the bottom of the stop block 31. A preload spring 324 is sleeved on the surface of the movable rod 322, and both pass through the clearance channel. One end of the preload spring 324 abuts against or is fixed to the end of the clearance channel away from the steel module 1; the other end is connected to the movable rod 322 and can move together with the movable rod 322. In other words, the movable end of the preload spring 324 is closer to the steel module 1 than the fixed end. Before the template enters the working state, the preload spring 324 generates a rebound force due to compression, pushing the movable rod 322 against the surface of the steel module 1 at the bottom of the stop block 31, thereby locking the stop block 31 and preventing it from sliding down.

[0035] The switch 323 is a reversing mechanism. One end is in a free state and serves as the operating surface of the switch 323, i.e., the input end 323-1. The other end, connected to the movable rod 322 via a clearance groove on the side of the fixed frame 321, serves as the output end 323-2 of the switch 323. The reversing shaft 323-3 in the middle is hinged to the fixed frame 321, allowing for the conversion between the rotation of the input end 323-1 and the horizontal movement of the output end 323-2. During construction, pressing down on the input end 323-1 of the switch 323 causes the output end 323-2 to move away from the steel module 1, driving the movable rod 322 back and eventually separating it from the stop block 31. The steel module 1 then slides down under gravity. After the external force acting on the input end 323-1 of the switch 323 is released, the accumulated rebound force of the preload spring 324 pushes the movable rod 322 to automatically reset, allowing the movable rod 322 to continue abutting against the steel module 1. Correspondingly, the reset of the movable rod 322 also resets the output terminals 323-2 and 323-1 of the switch 323. Since the gravitational force on the steel module 1 is much greater than the lateral force from the movable rod 322, the reset of the movable rod 322 does not affect the downward movement of the steel module 1.

[0036] As an equivalent alternative to this preferred embodiment, a clearance groove can be provided on the stop block 31. The axis of the clearance groove is aligned with the movable rod 322, and the inner diameter is larger than the cross-sectional size of the movable rod 322, so that the movable rod 322 can be partially embedded in the clearance groove, thereby restricting the steel module 1 from sliding down.

[0037] During deep-water construction, manually pressing down each switch 323 to slide the steel module 1 down is extremely time-consuming and labor-intensive. Therefore, the template positioning assembly 3 is also equipped with a linkage rod 33. In this preferred embodiment, the linkage rod 33 is a section of steel bar. Figure 2 and Figure 4As shown, a linkage rod 33 is welded to the surface of each steel module 1. The other end of the linkage rod 33 is bent and positioned above the adjacent movable clamp 32, specifically above the input end 323-11 of the adjacent switch 323. When the first steel module 1 slides down, the first set of linkage rods 33 welded to it moves down accordingly. The bent section of the first linkage rod 33 impacts and presses down on the input end 323-1 of the second set of switches 323. Correspondingly, the second set of movable rods 322 disengages from the stop block 31 on the second steel module 1, and the second steel module 1 also slides down. The second set of linkage rods 33 welded to the second steel module 1 then triggers the third set of switches 323, causing the third steel module 1 to slide down as well, and so on. Therefore, for any side of the template, the construction worker only needs to trigger the set of switches 323 located at the outermost edge to make all the steel modules 1 on that side automatically disengage from their limits and slide down.

[0038] The above component numbers are for ease of description and to further visualize the adjacent relationships between components, and are not intended to explicitly define any specific component in the steel formwork.

[0039] A reset ear 4 is welded to the surface of the steel module 1. For ease of construction, the reset ear 4 is positioned lower than the stop block 31. The reset ear 4 works in conjunction with a rope. The function of the reset ear 4 is further explained in conjunction with the construction process. Before the template is submerged in water, a rope is passed through all the reset ears 4 in sequence, and a movable knot is set. During the lowering process, the rope is taut under the weight of the template and the limiting effect of the reset ear 4, providing additional vertical limiting for the steel module 1 and preventing it from sliding down prematurely or even detaching from the support assembly 2 due to accidental triggering of the switch 323. When the template is in operation, the rope is slack to prevent the steel module 1 from experiencing excessive resistance during its descent. After the concrete pad is poured and reaches its strength, the free end of the rope is pulled, causing the section of rope passing through the reset ear 4 to gradually tighten and move the steel module 1 upwards to reset.

[0040] When the template is in operation, since each steel module 1 does not slide down synchronously and may have different final displacements, the lateral constraint between the two steel module 1 segments in the width direction is weakened. This results in the steel module 1 potentially shifting its sliding direction during descent. This shift not only hinders the descent of adjacent steel modules 1 but also affects the sealing of the template. Therefore, in this preferred embodiment, two sets of woolen guide wheels 6 are vertically spaced on the surface of each steel module 1 segment. The axles of the woolen guide wheels 6 are horizontally positioned, with both ends welded to the support assembly 2. The rolling direction of the woolen guide wheels 6 is vertical, resulting in rolling friction with the steel module 1 in the vertical direction, while there is significant friction in the horizontal direction. Therefore, the two sets of woolen guide wheels 6 assist the steel module 1 in sliding along the vertical direction, preventing the steel module 1 from shifting during descent.

[0041] When the steel module 1 slides down and finally abuts against the bottom soil layer 7, due to the uneven surface of the soil layer 7, there are height differences between the different sections of the steel module 1. Since the support assembly 2 needs to provide enveloping support for all the steel modules 1, the final height difference between the steel modules 1 must not exceed the vertical dimension of the support assembly 2; otherwise, the steel module 1 located at the lower position will detach from the support assembly 2, affecting the concrete pouring. The template provided in this preferred embodiment is only suitable for working conditions where the height difference between the bottom soil layer and the bottom soil layer is within 400mm.

[0042] The above description is merely a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention by those skilled in the art within the scope of the technology disclosed in the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A steel formwork for caissons used in deep-water concrete block casting, characterized in that: The system includes modules, a support assembly, a locking assembly, and a reset lug. Several modules are arranged side-by-side in the width direction, enclosing a space for concrete casting. Any two modules have relative sliding freedom in the length direction. The support assembly is fitted onto the top of the modules and extends downwards on both the inner and outer sides to embrace the upper half of the modules, providing lateral constraint. The locking assembly is located on the outer side of the modules and includes a fixed locking member, a movable locking member, and a linkage member. A fixed locking member is located on the outer side of each module segment, and several sets of movable locking members are located at the bottom of the support assembly, cooperating with the fixed locking members: when the movable locking member engages with the fixed locking member, the module is fixed in its initial position; when the movable locking member disengages from the fixed locking member, the module can slide down under gravity. The linkage member enables linkage between adjacent sets of movable locking members. A reset lug is located on the outer side of each module segment. The movable locking component includes a fixed frame, a movable block, a reset component, and a switch; the fixed frame is connected to the bracket assembly and is used to mount the movable block, the reset component, and the switch; the reset component limits the engagement between the movable block and the fixed locking component; the switch allows the movable block to move, releasing the limiting engagement between the movable block and the fixed locking component; a fixed frame is provided at the bottom of the outer ring bracket corresponding to the position of the fixed locking component; a clearance channel is provided on the fixed frame, and the extension direction of the clearance channel is perpendicular to the module; the reset component is sleeved on the movable block, and both are inserted into the clearance channel; The switch is a reversing mechanism. The input end is in a free state, and the output end is connected to the movable block. The reversing shaft passes through the fixed frame. A pre-tightened reset member is provided in the clearance channel. One end of the reset member is connected to the movable block, and the other end abuts against or is fixed to the end of the clearance channel away from the module. The rebound force of the pre-tightened reset member causes the movable block to abut against the stop block or the module at the bottom of the stop block, limiting the fixed clamp in the vertical direction. The reversing shaft of the switch can convert the rotation of the input end to the horizontal movement of the output end. The horizontal movement of the output end can cause the movable block to release the limiting engagement with the fixed clamp.

2. The steel formwork for caisson casting of deep-water concrete pad blocks according to claim 1, characterized in that: The bracket assembly includes an inner ring bracket, an outer ring bracket, and a bracket connector; the inner ring bracket is disposed on the inner side of the module; the outer ring bracket is disposed on the outer side of the module and extends downward to the height of the fixing clip; the inner ring bracket and the outer ring bracket are connected at the top by the bracket connector.

3. A steel formwork for caisson casting of deep-water concrete pad blocks according to claim 2, characterized in that: The bracket connector is a U-shaped steel plate, which is spaced and sleeved on the top of the inner ring bracket and the outer ring bracket. The two wings of the U-shaped steel plate are located on the inner side of the inner ring bracket and the outer side of the outer ring bracket, respectively.

4. A steel formwork for caisson casting of deep-water concrete pad blocks according to claim 1, characterized in that: A lifting lug is provided at the top of the support assembly.

5. A steel formwork for caisson casting of deep-water concrete pad blocks according to claim 1, characterized in that: One end of the linkage is welded to the surface of the module, and the other end is located above the adjacent movable card; when the linkage moves downward, it can cause the adjacent movable card to detach from the fixed card.

6. A steel formwork for caisson casting of deep-water concrete pad blocks according to claim 1, characterized in that: On the outer side of each module, a guide wheel is provided along the vertical direction; the guide wheel is connected and installed on the bracket assembly.

Images