Construction formwork support frame for large-span cantilever beam

Abstract

This invention discloses a formwork support for large-span cantilever beam construction, comprising a base, a connector for connecting to external cantilever columns, a construction plate for external construction personnel to stand on, a driving component for sliding the construction plate along the length of the external cantilever beam, a rotating plate stacked on the construction plate for secondary standing by external construction personnel, a rotating component for driving the rotating plate to rotate axially around one corner of the outer end of the construction plate, and a lifting component on the base to prevent the rotating plate from detaching from the construction plate after rotation. Both the construction plate and the rotating plate are reinforced with strengthening components to enhance their support strength. This invention solves the problem in the prior art of lacking a cantilever beam construction formwork support that is easy to assemble and disassemble and can be adjusted according to changes in the construction location.

Description

Technical Field

[0001] This invention relates to the field of formwork technology, specifically to a formwork support for the construction of large-span cantilever beams. Background Technology

[0002] In existing technologies, a large number of formwork supports need to be installed before construction at the junction between cantilever beams and cantilever columns. However, the height of the cantilever beams is relatively high, which means that the formwork supports need to be erected at higher elevations. The higher the formwork supports are erected, the worse their stability becomes, making them prone to safety accidents. Furthermore, the overall assembly and disassembly of the formwork supports is quite cumbersome and consumes a lot of physical strength for construction workers. At the same time, when the construction location changes, construction workers need to erect new formwork supports or dismantle and rebuild existing ones, which consumes a lot of construction time and physical strength. Moreover, in existing technologies, the formwork supports need to be dismantled after construction is completed, and the dismantled formwork supports are difficult to reuse, resulting in cost waste. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a formwork support for the construction of large-span cantilever beams, solving the problem of the lack of a formwork support for cantilever beams that is easy to assemble and disassemble and can be adjusted according to changes in the construction location.

[0004] To achieve the above objectives, the present invention provides a formwork support frame for the construction of a large-span cantilever beam, including a base, a connector for connecting to an external cantilever column, a construction plate for external construction personnel to stand on, a driving component for driving the construction plate to slide along the length of the external cantilever beam, a rotating plate for external construction personnel to stand on and work on, a rotating component for driving the rotating plate to rotate axially at one corner of the outer end of the construction plate, a hoisting component for preventing the rotating plate from detaching from the construction plate after rotation, and reinforcing components for strengthening the support of both the construction plate and the rotating plate.

[0005] The advantages of adopting the above technical solution are as follows: Before construction work begins at the junction of the cantilever beam and the cantilever column, the base is installed on the external cantilever column via connectors. The position of the construction plate is then adjusted according to the construction location. Specifically, when construction is required along the length of the cantilever beam, the construction plate is simply slid along the beam's length using a drive mechanism. Construction workers can then stand on the construction plate and work directly. When construction is required on one side of the cantilever beam, its bottom, or one side of the cantilever column, the operator can rotate the plate on the construction plate using a rotating mechanism. The rotating plate rotates axially around a corner of the outer end of the construction plate, either to the left or right, thus changing the fan-shaped angle of the plate relative to the construction plate. This allows construction workers to directly adjust the position according to construction needs. The above technical setup facilitates adjustments by construction workers based on the construction location. This technology allows for position adjustment, improving construction efficiency. Compared to existing technologies that require moving and disassembling formwork or installing numerous formwork supports, this technology is simple to operate and easy to reposition, thus significantly improving construction efficiency. It eliminates the need for formwork disassembly, saving labor costs and preventing disruptions to the construction process. The technology also reduces the need for numerous formwork supports, thereby decreasing construction costs and time. The lifting components ensure that the construction slab does not detach from the base after sliding, and also ensure that the rotating slab does not detach from the construction slab after rotation, preventing accidents to construction personnel. Safety ropes or protective nets can be installed on the outer ring of the rotating slab to enhance worker safety. The reinforcing components increase the support strength of the construction slab and rotating slab, preventing breakage during prolonged use.

[0006] The invention further comprises: two steel beams arranged opposite each other on the base; a slide rail groove is formed on the inner wall of each steel beam along its length; the two slide rail grooves are arranged opposite each other; the two sides of the construction plate are respectively located in the two slide rail grooves; toothed grooves are arranged on both sides of the construction plate along the length of the steel beams; the driving component includes two servo motors, which are respectively mounted on the two steel beams and their output ends are respectively inserted into their corresponding slide rail grooves; a gear shaft is provided on the output end of the servo motors, and the gear shaft is partially meshed with the toothed groove.

[0007] The advantages of adopting the above technical solution are as follows: When it is necessary to move the construction plate according to the construction position, the operator starts the servo motor. The servo motor starts and its output end rotates axially, which drives the gear shaft to rotate axially. Because the gear shaft meshes with the tooth groove, the gear shaft drives the construction plate to move back and forth along the length of the steel beam, thereby driving the construction personnel to move along the length of the steel beam. This facilitates the construction personnel to carry out construction, improves construction efficiency, and shortens construction time. In the above technology, the movement of the construction plate is achieved by the meshing of the gear shaft and the tooth groove. At the same time, the meshing of the gear shaft and the tooth groove can also improve the connection strength between the construction plate and the steel beam, thereby improving the stability of the construction plate on the steel beam.

[0008] The present invention further comprises: two limiting blocks are respectively arranged opposite to each other on both sides of the construction plate, the limiting blocks are arranged in the slide rail groove, and the radial cross section of the limiting blocks and the radial cross section of the slide rail groove are both trapezoidal.

[0009] The advantages of adopting the above technical solution are: the two limiting blocks are arranged opposite each other and the toothed groove is located between the two limiting blocks, so that when the toothed shaft moves on the toothed groove to the beginning or end of the toothed groove, the limiting block will abut against the inner wall of the slide rail groove, thereby ensuring that the construction plate will not slide excessively and detach from the steel beam, thus avoiding the construction plate from separating from the steel beam and causing an accident. The setting of the limiting block improves the stability and safety of the construction plate on the steel beam.

[0010] The invention further comprises: the rotating component includes two drive motors, which are respectively located at the bottom of the two corners of the outer end of the construction plate; each corner of the outer end of the rotating plate has a through hole corresponding to the position of the two drive motors for the adjacent and corresponding output shafts of the drive motors to pass through; the diameter of the output shaft of the drive motor is smaller than the diameter of the through hole; each through hole has a mating sleeve; the mating sleeve has a mating hole through which the output shaft of the drive motor passes; the outer peripheral wall of the output shaft of the drive motor has a first mating tooth pattern arranged along the height direction of the output shaft; the mating hole has a second mating tooth pattern for engaging with the first mating tooth pattern; the outer peripheral wall of the mating sleeve has a third mating tooth pattern along its height direction; and the through hole has a fourth mating tooth pattern for engaging with the third mating tooth pattern.

[0011] The advantages of adopting the above technical solution are as follows: When construction is required on one side of the cantilever beam, the bottom of the cantilever beam, or one side of the cantilever column, the operator only needs to start the drive motor to rotate the rotating plate on the construction plate. The operator removes one of the two mating sleeves according to the swing direction of the rotating plate. That is, when the rotating plate needs to swing to the left relative to the construction plate, the operator removes the mating sleeve on the right side of the outer end of the construction plate from the through hole. The distance between the arc-shaped notch and the through hole is matched with the diameter of the drive motor output shaft. This allows the drive motor output shaft on the right side of the outer end of the construction plate to pass through the arc-shaped notch on the right side of the rotating plate when the rotating plate swings to the left relative to the construction plate and the mating sleeve no longer restricts the drive motor output shaft. This prevents interference during the rotation of the rotating plate, thereby achieving a fan-shaped angle change between the rotating plate and the construction plate, allowing the operator to directly adjust the rotation according to construction needs. The position can be adjusted accordingly. The above-mentioned technology allows for changing the position of the rotating plate based on construction needs, facilitating construction without requiring the rebuilding or dismantling of existing formwork, thus improving construction efficiency. The drive motor can also be positioned at the bottom center of the construction plate, its position adjustable according to the actual size of the rotating plate. This requires only the creation of through holes and matching teeth at the corresponding locations. The drive motor output is divided into a disassembly end and a connection end, connected by a threaded connection. The disassembly end is located within the through hole and corresponding mating hole, while the connection end, connected to the drive motor, is not placed within the through hole and corresponding mating hole, preventing the rotating plate from being affected by unidirectional swing. The outer wall of the drive motor is fixed to the bottom of the construction plate using bolts or welding. Alternatively, a cover can be installed around the drive motor, fixed to the bottom of the construction plate, to prevent the drive motor from detaching from the construction plate.

[0012] The invention further includes the following features: a column is provided on the base, and a slot is provided on the column along its height direction. An electric reel is provided in the slot. The lifting component includes a lifting rope for winding around the electric reel. One end of the lifting rope is wound around the take-up end of the electric reel, and the other end passes through the slot and is connected to the outer end face of the rotating plate.

[0013] The advantages of adopting the above technical solution are: when the rotating plate swings, the electric reel is in an unwound state; when the rotating plate is adjusted, the electric reel immediately retracts the rope, keeping the hoisting rope taut. This improves the connection strength between the rotating plate and the column, as well as the stability of the rotating plate on the base, and also enhances the safety of construction personnel. In this technology, the hoisting rope can be divided into several strands and connected to the rotating plate or the construction plate separately, thereby improving the stability of the rotating plate and the construction plate on the base. The electric reel is existing technology, so its structure and function will not be elaborated further. The connection between the hoisting rope and the rotating plate... The connection structure is also existing technology, so the specific connection methods such as hinges or hooks will not be elaborated further. In the above technology, the column can be connected to the external cantilever column through connection methods such as tie rods, and then the connection between the external cantilever column and the rotating plate can be indirectly achieved through the hoisting rope, thereby realizing the force of the external cantilever column. In the above technology, hooking steel parts for hooking and cooperating with the hoisting rope can be set on the end face of the rotating plate near the four sides, so that the hoisting position of the hoisting rope on the rotating plate can be changed after the rotating plate rotates, thereby changing the force transmission direction of the rotating plate on the hoisting rope, thereby improving the connection between the rotating plate and the base.

[0014] The invention further includes the following features: the hoisting rope is made of several strands of steel wire wound together, and a limiting groove is provided at the opening of the slot to limit the deviation or displacement of the hoisting rope.

[0015] The advantages of adopting the above technical solution are: the hoisting rope in the above technology is made of several strands of steel wire wound together, thereby improving the overall strength and rigidity of the hoisting rope, thereby improving the connection strength between the column and the rotating plate and the stability of the rotating plate on the base, thereby improving the safety of construction personnel. The setting of the limiting groove in the above technology ensures that the direction of the hoisting rope tension will not change, thereby avoiding the swinging or displacement of the hoisting rope that would cause the rotating plate to shake or swing.

[0016] The present invention further includes: a connecting plate on the base, and a plurality of tie rods on the connecting plate for threaded engagement with pre-embedded holes on external cantilever columns, wherein the tie rods are connecting components.

[0017] The advantages of adopting the above technical solution are: in the existing technology, pre-embedded holes are usually opened on the cantilever column, and the pre-embedded holes are covered for bolt connection. The setting of tie rods allows the cantilever column and the connecting plate to be connected, thereby realizing the fixation of the base on the cantilever column. The above technical setting improves the connection strength between the base and the cantilever column, and at the same time, the position of the base on the cantilever column can be disassembled and assembled according to the construction height and construction position, thereby improving construction efficiency.

[0018] The present invention further provides that: the bottom of both the construction plate and the rotating plate are provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are embedded in the construction plate and the rotating plate, and the plurality of reinforcing ribs are reinforcing members.

[0019] The advantages of adopting the above technical solution are: the addition of reinforcing ribs in the above technology improves the support strength and rigidity of the construction plate and the rotating plate, thereby improving the safety of construction personnel and the service life of the construction plate and the rotating plate. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the present invention;

[0021] Figure 2 for Figure 1 A three-dimensional view of the rotating plate after it has rotated.

[0022] Figure 3 This is a three-dimensional view of the present invention after removing the cantilever beams and cantilever columns;

[0023] Figure 4 for Figure 3 A three-dimensional view of the rotating plate after it has rotated.

[0024] Figure 5 for Figure 4 A perspective 3D view;

[0025] Figure 6 This is a three-dimensional view of the present invention after removing the cantilever beams and cantilever columns. Detailed Implementation

[0026] This invention provides a formwork support frame for the construction of a large-span cantilever beam, including a base 1. The base 1 is equipped with a connector for connecting to an external cantilever column. A construction plate 2 is mounted on the base 1 for external construction workers to stand on. A driving component is mounted on the base 1 to drive the construction plate 2 to slide along the length of the external cantilever beam. A rotating plate 3 is stacked on the construction plate 2 for external construction workers to stand on for secondary construction. A rotating component is mounted on the construction plate 2 to drive the rotating plate 3 to rotate axially around one corner of its outer end. A lifting component is mounted on the base 1 to prevent the rotating plate 3 from detaching from the construction plate 2 after rotation. Both the construction plate 2 and the rotating plate 3 are equipped with reinforcing components to strengthen their support. Two steel beams 11 are arranged opposite each other on the upper part of the construction plate 2. Slide rail grooves 12 are formed on the inner wall of each steel beam 11 along its length. The two slide rail grooves 12 are arranged opposite each other. The two sides of the construction plate 2 are respectively positioned within the two slide rail grooves 12. Toothed grooves 21 are arranged on both sides of the construction plate 2 along the length of the steel beams 11. The driving component includes two servo motors 13, which are respectively mounted on the two steel beams 11, with their output ends passing through their respective slide rail grooves 12. Gear shafts 131 are provided on the output ends of the servo motors 13, and the gear shafts 131 partially mesh with the toothed grooves 21. Two limiting blocks 22 are arranged opposite each other on both sides of the construction plate 2. The limiting block 22 and the slide rail groove 12 are both trapezoidal in radial cross-section. The rotating component includes two drive motors 4, which are respectively located at the bottom of the two outer corners of the construction plate 2. At the two outer corners of the rotating plate 3, corresponding to the positions of the two drive motors 4, there are through holes 31 for the output shafts of adjacent and corresponding drive motors 4 to pass through. The diameter of the output shaft of the drive motor 4 is smaller than the diameter of the through hole 31. Each through hole 31 contains a mating sleeve 33, and the mating sleeve 33 has a mating hole 331 through which the output shaft of the drive motor 4 passes. The outer peripheral wall of the output shaft of the drive motor 4 has first mating teeth 41 arranged along the height direction of the output shaft. The hole 331 is provided with a second mating tooth 332 for engaging with the first mating tooth 41. The outer peripheral wall of the mating sleeve 33 is provided with a third mating tooth 34 along its height direction. The through hole 31 is provided with a fourth mating tooth 311 for engaging with the third mating tooth 34. The base 1 is provided with a column 14. The column 14 is provided with a slot 141 along its height direction. The slot 141 is provided with an electric reel 15. The lifting component includes a lifting rope 16 for winding on the electric reel 15. One end of the lifting rope 16 is wound on the take-up end of the electric reel 15, and the other end passes through the slot 141 and is connected to the outer end face of the rotating plate 3. The lifting rope 16 is made of several strands of steel wire wound together.The opening of the slot 141 is provided with a limiting slot 142 to restrict the offset or displacement of the hoisting rope 16. A connecting plate 5 is provided on the base 1, and the connecting plate 5 is provided with several tie rods 51 for threaded engagement with pre-embedded holes on the external cantilever column. The tie rods 51 are the connecting components. Several reinforcing ribs 6 are provided at the bottom of both the construction plate 2 and the rotating plate 3, and these reinforcing ribs 6 are embedded in the construction plate 2 and the rotating plate 3, serving as reinforcing components.

[0027] The accompanying drawings in the above-mentioned technical specifications are only simplified views of this technology. The actual product dimensions can be produced and adjusted according to specific construction needs. Furthermore, the structural views of the cantilever beams and cantilever columns in the accompanying drawings are also simplified versions. That is, the actual dimensions of the cantilever beams and cantilever columns are not consistent with those in the accompanying drawings and are only for illustrative purposes. The connection relationship between the hoisting rope and the rotating plate in the above-mentioned technology is a simplified view. This connection relationship is existing technology and therefore will not be shown in detail.

[0028] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A formwork support for the construction of a large-span cantilever beam, characterized in that: The system includes a base, on which a connector is provided for connecting to an external cantilever column. The base also includes a construction plate for external construction workers to stand and work on. The base is equipped with a driving component for sliding the construction plate along the length of the external cantilever beam. A rotating plate is stacked on the construction plate for external construction workers to stand and work on. The construction plate is equipped with a rotating component for driving the rotating plate to rotate axially around one corner of its outer end. The base is equipped with a lifting component to prevent the rotating plate from detaching from the construction plate after it rotates. Both the construction plate and the rotating plate are equipped with reinforcing components to strengthen their support. Two steel beams are arranged opposite each other on the base. A slide rail groove is formed on the inner wall of the steel beam along its length. The two slide rail grooves are arranged opposite each other. The two sides of the construction plate are respectively located in the two slide rail grooves. Toothed grooves are arranged on both sides of the construction plate along the length of the steel beam. The driving component includes two servo motors. The two servo motors are respectively set on the two steel beams and the output ends of the two servo motors are respectively inserted into their respective slide rail grooves. A gear shaft is provided on the output end of the servo motor. The gear shaft is partially meshed with the toothed groove. The rotating component includes two drive motors, which are respectively located at the bottom of the two corners of the outer end of the construction plate. At the two corners of the outer end of the rotating plate, corresponding to the positions of the two drive motors, there are through holes for the output shafts of adjacent and corresponding drive motors to pass through. The diameter of the output shaft of the drive motor is smaller than the diameter of the through hole. Each of the two through holes is provided with a mating sleeve. The mating sleeve has a mating hole through which the output shaft of the drive motor passes. The outer peripheral wall of the output shaft of the drive motor has a first mating tooth pattern arranged along the height direction of the output shaft of the drive motor. The mating hole is provided with a second mating tooth pattern for meshing with the first mating tooth pattern. The outer peripheral wall of the mating sleeve has a third mating tooth pattern along its height direction. The through hole is provided with a fourth mating tooth pattern for meshing with the third mating tooth pattern. The base is provided with a column, and the column has a slot along its height direction. An electric reel is provided in the slot. The lifting component includes a lifting rope for winding on the electric reel. One end of the lifting rope is wound on the take-up end of the electric reel, and the other end passes through the slot and is connected to the outer end face of the rotating plate. The base is provided with a connecting plate, and the connecting plate is provided with a number of tie rods for threaded engagement with the pre-embedded holes on the external cantilever column. The tie rods are the connecting parts.

2. The formwork support for a large-span cantilever beam as described in claim 1, characterized in that: Two limiting blocks are respectively arranged opposite each other on both sides of the construction slab. The limiting blocks are located in the slide rail groove. The radial cross section of the limiting blocks and the radial cross section of the slide rail groove are both trapezoidal.

3. The formwork support for a large-span cantilever beam as described in claim 1, characterized in that: The hoisting rope is made of several strands of steel wire wound together, and the opening of the slot is provided with a limiting groove to restrict the hoisting rope from deviating or shifting.

4. The formwork support for a large-span cantilever beam according to claim 1, characterized in that: The bottom of both the construction plate and the rotating plate is provided with a number of reinforcing ribs, which are embedded in the construction plate and the rotating plate, and the number of reinforcing ribs are the reinforcing members.

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