Precast tensioning fixtures and tensioning methods

Abstract

This invention relates to the field of offshore wind power construction technology, specifically disclosing a precast component tensioning fixture and method. The fixture, used for tensioning precast components, includes a fixture body, a pressure block, and a tensioning assembly. The fixture body includes a base frame and a suspension frame; the upper surface of the base frame is fixedly connected to the bottom end of the suspension frame via a connecting frame. The pressure block can press against the upper surface of the base frame. The tensioning assembly includes several tensioning bodies, each suspended from the suspension frame by a hand-operated hoist. Each tensioning body includes a suspension plate and several evenly spaced spreader beams along the length of the suspension plate. The spreader beams are fixed to the suspension plate and detachably connected to the end face of the precast component. Each spreader beam is equipped with a jack, one end of which is fixed to the spreader beam, and the other end presses against the end face of the precast component. The jack can apply a force perpendicular to the end face of the precast component. This fixture simplifies the precast component tensioning process, improves the tensioning effect, increases tensioning efficiency, and shortens the manufacturing cycle.

Description

Technical Field

[0001] This invention relates to the field of offshore wind power construction technology, and in particular to precast component tensioning fixtures and tensioning methods. Background Technology

[0002] The foundation of offshore wind turbines consists of three precast concrete boom segments. Each boom segment is assembled from multiple standard precast components, and tension is required between the precast components to achieve contact surface compression.

[0003] Currently, the conventional tensioning method involves placing a tensioning trolley on the non-contact side of the precast component, with jacks, spreader beams, and other auxiliary tensioning equipment suspended on the trolley. This tensioning method has low construction efficiency, high labor costs, and is not conducive to improving the tensioning efficiency of the precast concrete boom, making it difficult to shorten the construction cycle of offshore wind power equipment.

[0004] Therefore, there is an urgent need for a precast tensioning fixture to improve the tensioning efficiency of precast components and shorten the manufacturing cycle of precast components. Summary of the Invention

[0005] The purpose of this invention is to provide a preform tensioning fixture and tensioning method to improve the tensioning efficiency of preforms and shorten the manufacturing cycle of preforms.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A precast component tensioning fixture, used for tensioning precast components, includes a fixture body, a pressure block, and a tensioning assembly. The fixture body includes a base frame and a suspension frame, with the upper surface of the base frame and the bottom end of the suspension frame fixedly connected via a connecting frame. The pressure block can press against the upper surface of the base frame. The tensioning assembly includes several tensioning bodies, each of which is suspended from the suspension frame by a hand-operated hoist. Each tensioning body includes a suspension plate and several evenly spaced spreader beams along the length of the suspension plate. The spreader beams are fixedly connected to the suspension plate and detachably connected to the end face of the precast component. Each spreader beam is equipped with at least one jack, one end of which is fixedly connected to the spreader beam, and the other end presses against the end face of the precast component. The jack can apply a force perpendicular to the end face of the precast component.

[0008] As a preferred technical solution for the precast component tensioning fixture, the fixture body further includes reinforcing ribs, which are connected between the upper surface of the base frame and the connecting frame.

[0009] As a preferred technical solution for the precast component tensioning fixture, the bottom end of the suspension is fixedly connected to a lifting lug plate, and the lifting lug plate has a through hole. The number of the through holes is the same as the number of the hand chain hoists. Each hand chain hoist is connected to a traction rope, and each traction rope passes through one of the through holes.

[0010] As a preferred technical solution for precast component tensioning fixtures, the plane where the suspension is located is parallel to the plane where the base frame is located, and the length direction of the connecting frame is perpendicular to the plane where the base frame is located.

[0011] As a preferred technical solution for precast component tensioning fixtures, the plane where the suspension is located is higher than the plane where the base frame is located.

[0012] As a preferred technical solution for the tensioning fixture of precast components, the spreader beam has several through holes, and the locking bolts can pass through the through holes and be locked to the end face of the precast component.

[0013] As a preferred technical solution for the precast component tensioning fixture, the spreader beam is provided with two beam through holes, which are located at both ends of the spreader beam respectively; the length direction of the spreader beam is perpendicular to the length direction of the suspension plate.

[0014] As a preferred technical solution for the precast component tensioning fixture, the main body of the fixture is formed by welding I-beams.

[0015] As a preferred technical solution for precast component tensioning fixtures, the pressure block is a rectangular iron block.

[0016] The precast component tensioning method, applied to the aforementioned precast component tensioning fixture, includes the following steps:

[0017] S10: Hoist the main body of the tooling and place it on the top edge of the precast component, and press the base frame down with the pressure block;

[0018] S20: Suspend all of the tensioning components on the suspension;

[0019] S30: Connect all the spreader beams to the end face of the precast component;

[0020] S40: Apply force perpendicularly to the end face of the precast component using all the jacks to perform the tensioning operation;

[0021] S50: After the tensioning operation is completed, first control all the jacks to stop applying force, then remove all the spreader beams from the end face of the precast component, then remove all the tensioning components from the suspension, and finally remove the pressure block and the main body of the tooling.

[0022] The beneficial effects of this invention are:

[0023] This precast component tensioning fixture achieves the purpose of suspending the tensioning component by setting up a fixture body and pressure blocks. The design, combined with a hand-operated hoist for raising and lowering the tensioning body, allows for positional adjustment of the tensioning body relative to the end face of the precast component, enabling the spreader beams to be smoothly assembled into place on the end face of the precast component. The design of the pressure block pressing down on the base frame is simple, reliable, and easy to implement, serving to position the fixture body and reducing the risk of positional displacement due to accidents, thus ensuring the suspension capability of the tensioning component. Specifically, the base frame is pressed down by the pressure blocks, and the suspension frame suspends the tensioning component. The design of connecting these two components through a connecting frame helps improve the stress distribution of the fixture body, enhances its suspension capacity, and improves its structural layout. The evenly distributed spreader beams on the suspension plate allow the jacks connected to the spreader beams to perform uniform tensioning operations at various points on the end face of the precast component, thereby ensuring the tensioning effect of the precast component tensioning fixture on the precast component. The above structural improvements are simple in design and have a wide range of applications, making the tensioning operation more flexible. This helps to simplify the tensioning process of precast components, improve the tensioning effect of precast components, increase the tensioning efficiency of precast components, reduce construction costs, and shorten the manufacturing cycle of precast components.

[0024] The implementation plan of this precast tensioning method is clear and the process is simple. It simplifies the process of tensioning precast components, optimizes the steps of tensioning precast components, and improves the tensioning effect of precast components. The above method has a wide range of applications and has good promotional significance. Attached Figure Description

[0025] Figure 1 This is a side view of the precast tensioning fixture provided in an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 Cross-sectional view of plane AA;

[0027] Figure 3 This is a front view of the precast tensioning fixture provided in an embodiment of the present invention;

[0028] Figure 4 This is a side view of the prefabricated component, tooling body, and tensioning assembly provided in the embodiments of the present invention;

[0029] Figure 5 This is a side view of the precast tensioning fixture and the precast component provided in the embodiments of the present invention;

[0030] Figure 6 This is a front view of the preform tensioning fixture and the preform provided in the embodiments of the present invention.

[0031] In the picture:

[0032] 100. Tooling body; 110. Base frame; 120. Suspension frame; 130. Connecting frame; 140. Reinforcing rib; 150. Lifting lug plate; 151. Lifting lug through hole;

[0033] 200. Tensioning assembly; 210. Jack; 220. Suspension plate; 230. Spreader beam; 231. Beam through hole; 240. Hand chain hoist;

[0034] 300. Pressed block;

[0035] 900. Precast components. Detailed Implementation

[0036] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] like Figures 1 to 6 As shown, this embodiment provides a precast component tensioning fixture for tensioning precast components 900. The precast component tensioning fixture includes a fixture body 100, a pressure block 300, and a tensioning assembly 200. The fixture body 100 includes a base frame 110 and a suspension 120. The upper surface of the base frame 110 is fixedly connected to the bottom end of the suspension 120 via a connecting frame 130. The pressure block 300 can press against the upper surface of the base frame 110. The tensioning assembly 200 includes several tensioning bodies, each of which is suspended from the suspension by a hand-operated hoist 240. On the frame 120, the tensioning body includes a suspension plate 220 and several spreader beams 230 evenly distributed along the length of the suspension plate 220. The spreader beams 230 are fixed to the suspension plate 220 and can be detachably connected to the end face of the precast component 900. Each spreader beam 230 is provided with at least one jack 210. One end of the jack 210 is fixed to the spreader beam 230, and the other end presses against the end face of the precast component 900. The jack 210 can apply a force perpendicular to the end face of the precast component 900 to the precast component 900.

[0041] This precast component tensioning fixture, by setting up a fixture body 100 and a pressure block 300, achieves the purpose of suspending the tensioning component 200. Combined with the design of a hand-operated hoist 240 for raising and lowering the tensioning body, the position of the tensioning body relative to the end face of the precast component 900 can be adjusted, allowing the spreader beam 230 to be smoothly assembled into place on the end face of the precast component 900. The design of the pressure block 300 pressing down on the base frame 110 is simple, reliable, and easy to implement. It serves to position the fixture body 100, reducing the risk of accidental positional displacement and ensuring the suspension capability of the tensioning component 200. Specifically, the base frame 110 is pressed down by the pressure block 300, the suspension 120 is used to suspend the tensioning component 200, and the connection between the two via the connecting frame 130 helps improve the stress distribution of the fixture body 100, enhances its suspension capability, and improves its structural layout. The evenly spaced spreader beams 230 on the suspension plate 220 enable the jacks 210 connected to the spreader beams 230 to perform uniform tensioning operations at various points on the end face of the precast component 900, thereby ensuring the tensioning effect of the precast component tensioning fixture on the precast component 900. The above structural improvement design is simple, widely applicable, and makes the tensioning operation flexible, helping to simplify the tensioning process of the precast component 900, improve the tensioning effect of the precast component 900, increase the tensioning efficiency of the precast component 900, reduce construction costs, and shorten the manufacturing cycle of the precast component 900.

[0042] In this embodiment, the precast component 900 is a precast concrete boom segment, which is used to construct offshore wind power equipment. Utilizing the aforementioned precast component tensioning fixture, continuous and rapid tensioning of the precast concrete boom segment can be achieved, helping to shorten the construction cycle of offshore wind power equipment.

[0043] For example, the dimensions of the tooling body 100 are designed based on the magnitude of the predetermined tension force, the distribution of tension holes on the side of the precast component 900, and the dimensions and weight of the jack 210. The specific dimensions of the tooling body 100 are determined by those skilled in the art based on the actual engineering situation, and the determination method is a conventional technical means in the art, which will not be elaborated here.

[0044] In this embodiment, the fixture body 100 also includes a reinforcing rib 140, which is connected between the upper surface of the base frame 110 and the connecting frame 130. The reinforcing rib 140 improves the structural stability of the fixture body 100, ensures the structural strength of the fixture body 100, reduces the risk of deformation under stress, improves the suspension capacity of the fixture body 100 for the tensioning assembly 200, and ensures the long-term stable operation of the precast component tensioning fixture.

[0045] For example, a lug plate 150 is fixedly connected to the bottom end of the suspension 120. A lug through hole 151 is provided on the lug plate 150. The number of lug through holes 151 is the same as that of the hand chain hoists 240. Each hand chain hoist 240 is connected to a traction rope, and each traction rope passes through a lug through hole 151.

[0046] With the above settings, the range of motion of the tensioning component 200 is limited, avoiding positional deviation of the tensioning component 200 in the horizontal plane, ensuring the smooth suspension of the tensioning component 200 by the fixture body 100, and ensuring the smooth operation of the precast component tensioning fixture.

[0047] Furthermore, the plane containing the suspension 120 is parallel to the plane containing the base frame 110, and the length direction of the connecting frame 130 is perpendicular to the plane containing the base frame 110. This structural design optimizes the specific structure of the tooling body 100, improves the stress distribution at various points on the tooling body 100, helps simplify the structure of the tooling body 100, and reduces the space it occupies.

[0048] Furthermore, the plane where the suspension 120 is located is higher than the plane where the base frame 110 is located. The above structural design limits the structure of the tooling body 100 to a Z-shape, which is simple and reasonable. This further optimizes the stress on various parts of the tooling body 100, helps to further improve the suspension capability of the tensioning component 200, and can reduce the manufacturing cost of the tooling body 100.

[0049] In this embodiment, the spreader beam 230 has several through holes 231, through which locking bolts can pass and be locked to the end face of the precast component 900. Specifically, the number of through holes 231 is the same as the number of tensioning holes, and they correspond one-to-one. Each locking bolt is locked to one tensioning hole. With the above design, the spreader beam 230 can be detachably connected to the end face of the precast component 900, thereby ensuring that the position of the tensioning body relative to the precast component 900 can be determined, thus ensuring the smooth completion of the tensioning operation.

[0050] Furthermore, the spreader beam 230 is provided with two beam through holes 231, which are located at both ends of the spreader beam 230; the length direction of the spreader beam 230 is perpendicular to the length direction of the suspension plate 220. The reliability of the above layout design not only ensures the connection stability between the spreader beam 230 and the end face of the precast component 900, but also improves the stress condition on the spreader beam 230, thereby ensuring the stable operation of the jack 210 and further guaranteeing the smooth completion of the tensioning operation.

[0051] In this embodiment, the fixture body 100 is formed by welding I-beams. This design reduces the processing difficulty of the fixture body 100, reduces the production cost of the fixture body 100, and helps to improve the manufacturing efficiency of the precast tensioning fixture.

[0052] For example, the pressure block 300 is a cuboid pressure iron. Specifically, the pressure block 300 is 20 meters long and 7.8 meters high. The cuboid pressure iron can effectively clamp the base frame 110 between the pressure block 300 and the precast component 900, with a low risk of positional displacement and small space occupation, which helps to ensure the downward pressure effect of the pressure block 300.

[0053] In this embodiment, the tensioning component 200 weighs 3 tons; the pressure block 300 is a 10-ton iron block; and the tooling body 100 weighs 1.9 tons. The pressure block 300 and the tooling body 100 together weigh 11.9 tons. The top surface of the preform 900 has a polyurea coating, and the coefficient of friction of polyurea is 1.2. At this time, the surface friction between the pressure block 300 and the tooling body 100 on the top surface of the preform 900 is 11.9 × 1000 × 9.8 × 1.2 = 140 kN.

[0054] This embodiment also provides a precast tensioning method, applied to the aforementioned precast tensioning fixture, including the following steps:

[0055] Step 1: Hoist the main tooling body 100 and place it on the top edge of the precast part 900, and press the base frame 110 down with the pressure block 300.

[0056] Step 2: Suspend all tensioning components 200 on suspension 120.

[0057] Step 3: Connect all the spreader beams 230 to the end face of the precast component 900.

[0058] Step 4: Apply vertical force to the end face of the precast component 900 with all jacks 210 to perform the tensioning operation.

[0059] Step 5: After the tensioning operation is completed, first control all the jacks 210 to stop applying force, then remove all the spreader beams 230 from the end face of the precast component 900, then remove all the tensioning components 200 from the suspension 120, and finally remove the pressure block 300 and the tooling body 100.

[0060] The implementation plan of the precast tensioning method is clear and the process is simple. It simplifies the process of tensioning the precast 900, optimizes the steps of tensioning the precast 900, and improves the tensioning effect of the precast 900. The above method has a wide range of applications and has good promotion significance.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A precast tensioning fixture for tensioning precast components (900), characterized in that, include: The tooling body (100) includes a base frame (110) and a suspension (120), the upper surface of the base frame (110) and the bottom end of the suspension (120) are fixedly connected by a connecting frame (130); The pressure block (300) can be pressed onto the upper surface of the base frame (110); The tensioning assembly (200) includes several tensioning bodies, each of which is suspended from the suspension frame (120) by a hand-operated hoist (240). Each tensioning body includes a suspension plate (220) and several spreader beams (230) evenly distributed along the length of the suspension plate (220). The spreader beams (230) are fixed to the suspension plate (220) and detachably connected to the end face of the precast component (900). Each spreader beam (230) is provided with at least one jack (210). One end of the jack (210) is fixed to the spreader beam (230), and the other end presses against the end face of the precast component (900). The jack (210) can apply a force perpendicular to the end face of the precast component (900) to the precast component (900). The bottom end of the suspension (120) is fixedly connected to a lug plate (150), and a lug through hole (151) is provided on the lug plate (150). The number of lug through holes (151) is the same as that of the hand chain hoists (240). Each hand chain hoist (240) is connected to a traction rope, and each traction rope passes through one of the lug through holes (151). The spreader beam (230) has several beam through holes (231) through it, and the locking bolt can pass through the beam through holes (231) and be locked to the end face of the precast part (900); The spreader beam (230) is provided with two beam through holes (231), which are located at both ends of the spreader beam (230); the length direction of the spreader beam (230) is perpendicular to the length direction of the suspension plate (220).

2. The precast component tensioning fixture according to claim 1, characterized in that, The tooling body (100) also includes a reinforcing rib (140), which is connected between the upper surface of the base frame (110) and the connecting frame (130).

3. The precast component tensioning fixture according to claim 1, characterized in that, The plane of the suspension (120) is parallel to the plane of the base frame (110), and the length direction of the connecting frame (130) is perpendicular to the plane of the base frame (110).

4. The precast component tensioning fixture according to claim 3, characterized in that, The plane where the suspension (120) is located is higher than the plane where the base frame (110) is located.

5. The precast component tensioning fixture according to claim 1, characterized in that, The tooling body (100) is formed by welding I-beams.

6. The precast tensioning fixture according to any one of claims 1-5, characterized in that, The pressure block (300) is a rectangular iron block.

7. A precast component tensioning method, applied to the precast component tensioning fixture described in any one of claims 1-6, characterized in that, Includes the following steps: S10: The tooling body (100) is hoisted and placed on the top edge of the precast part (900), and the base frame (110) is pressed down by the pressure block (300). S20: Suspend all the tensioning components (200) on the suspension (120); S30: Connect all the spreader beams (230) to the end face of the precast component (900); S40: Apply vertical force to the end face of the precast component (900) with all the jacks (210) to perform tensioning operation; S50: After the tensioning operation is completed, first control all the jacks (210) to stop applying force, then remove all the spreader beams (230) from the end face of the precast component (900), then remove all the tensioning components (200) from the suspension (120), and finally remove the pressure block (300) and the tooling body (100).

Images