Prestressed portal steel frame structure

Abstract

This utility model belongs to the field of steel frame structures and discloses a prestressed portal steel frame structure, including vertical beams, horizontal beams, roof beams, tensioning structures, and an anti-detachment mechanism. The anti-detachment mechanism includes a slide, a rotating plate, a limiting plate, a first limiting component, and a second limiting component. The rotating plate is rotatably mounted at both ends of the slide, and the rotating plate can abut against the inner wall of the roof beam. The limiting plate is fixed to the top of the slide. The first limiting component limits the position of the slide relative to the roof beam, and the second limiting component limits the position of the rotating plate relative to the slide. By setting up the anti-detachment mechanism, the purlins, after being placed on the roof beam, can be positioned using the anti-detachment mechanism, preventing them from slipping off the roof beam due to their own weight. This eliminates the need for additional manual control of the purlin position, saving manpower. Manual operation is simpler and more convenient, as only the purlins need to be connected and fixed to the roof beam. Furthermore, the anti-detachment mechanism enhances the safety of the installation process.

Description

Technical Field

[0001] This utility model belongs to the field of steel frame structure technology, specifically relating to a prestressed portal steel frame structure. Background Technology

[0002] Portal frame structures are a traditional structural system, widely used in buildings such as factories and warehouses due to their simple geometry, large span, and high load-bearing capacity. Applying a reverse initial stress (prestress) to the portal frame structure through methods such as cable tensioning can effectively improve the load-bearing performance of the steel structure system.

[0003] Existing factory buildings typically use portal steel frame structures with an inclined roof beam to increase the height of the roof. Purlins are installed between the roof beams to install the roof panels. However, due to the inclined design of the roof beams, the purlins tend to slip after being placed on them. As a result, multiple workers are required to position and fix the purlins during installation, which is a huge waste of manpower and has low operational safety. Utility Model Content

[0004] The present invention aims to provide a prestressed portal steel frame structure to solve the problem of slippage risk during the installation of purlins and roof beams mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a prestressed portal steel frame structure, comprising... There are two vertical beams facing each other, and a horizontal beam is fixed between the two vertical beams; The roof beam consists of two beams, each fixed to the top of one of the two vertical beams. The ends of the two roof beams are fixed to each other, and the cross-section of the roof beam is in the shape of an "I". Tensioning structure, used to apply prestress to the crossbeam; The anti-detachment mechanism includes a slide, a rotating plate, a limiting plate, a first limiting component, and a second limiting component. The slide is slidably installed on the roof beam. Rotating plates are rotatably installed at both ends of the slide. The rotating plates can abut against the inner wall of the roof beam. The limiting plate is fixed to the top of the slide. The first limiting component is used to limit the position of the slide relative to the roof beam, and the second limiting component is used to limit the position of the rotating plate relative to the slide.

[0006] The principle and effects of this technical solution: 1. By setting up an anti-slip mechanism, the purlins can be positioned on the roof beams, preventing them from slipping off the beams due to their own weight. This eliminates the need for manual control of the purlins' position, saving manpower. The operator only needs to connect and fix the purlins to the roof beams, making the operation simpler and more convenient. Furthermore, the anti-slip mechanism enhances the safety of the installation process.

[0007] 2. By configuring the carriage, rotating plate, and second limiting component, the rotating plate can abut against the inner side of the roof beam under the limitation of the second limiting component. At this time, the carriage cannot detach from the roof beam. By releasing the second limiting component from limiting the rotating plate, the rotating plate will move away from the roof beam, allowing the carriage to detach from the roof beam. Therefore, the anti-detachment mechanism can be removed and recycled for reuse after use without interfering with the laying of the roof slab. 3. By setting the first limiting component, the position of the carriage relative to the roof beam can be limited by the first limiting component, so that the carriage and the limiting plate as a whole can stably limit the position of the purlin, and the position of the carriage can be adjusted by releasing the restriction of the first limiting component, making it more flexible to use.

[0008] The present invention is further configured such that: the first limiting component includes a first limiting bolt, the first limiting bolt is threadedly inserted into the top of the slide, and the end of the first limiting bolt abuts against the top surface of the roof beam.

[0009] The principle and effect of this technical solution: By rotating the first limiting bolt to press against the roof beam, the position of the slide relative to the roof beam can be limited by friction.

[0010] The present invention is further configured such that: the second limiting component includes a vertical plate and a second limiting bolt, the outer wall of the slide is fixed with a vertical plate, the second limiting bolt is threadedly inserted into the vertical plate, and the second limiting bolt can abut against the outer wall of the rotating plate.

[0011] The principle and effect of this technical solution: By extending the position of the second limiting bolt through the vertical plate, the second limiting bolt can be aligned with the side of the rotating plate. Then, by rotating the second limiting bolt, the end of the second limiting bolt can be made to abut against the rotating plate until the rotating plate abuts against the top of the inner side of the roof beam. Since the bolt has self-locking properties, the rotating plate cannot automatically reset under its own weight without human control. Thus, the rotating plate can limit the position of the carriage relative to the roof beam by wrapping it. Furthermore, by releasing the restriction of the second limiting bolt, the wrapping of the rotating plate on the roof beam can be released, thereby allowing the carriage to be disassembled relative to the roof beam.

[0012] The present invention is further configured such that: the tensioning structure includes a support rod, a steel strand and an anchor assembly, the steel strand is threaded through the two vertical beams, and the anchor assembly is fitted and fixed at both ends of the steel strand, the anchor assembly abuts against the outer wall of the vertical beam, the support rod is installed at the bottom of the horizontal beam, and the bottom of the support rod is connected to the steel strand.

[0013] The principle and effect of this technical solution: By installing steel strands on two vertical beams and limiting the steel strands through the anchor assembly, when the steel strands are tensioned outward, the support rods installed on the steel strands will provide upward prestress to the support rods. This prestress will then act on the crossbeams, thereby improving the load-bearing capacity of the crossbeams.

[0014] The present invention is further configured such that: the tensioning structure also includes a rotating roller, the rotating roller is installed at the bottom of the support rod, and multiple sets of the support rod and rotating roller are provided together and spaced apart along the length of the crossbeam.

[0015] The principle and effect of this technical solution: By setting up the rotating roller, the angle between the steel strand and the rotating roller can be changed by winding around the rotating roller. That is, by making the steel strand and the support rod have a certain inclination angle, the prestress and traction force on the steel strand can be better transferred to the support rod, thereby increasing the magnitude of the prestress.

[0016] The present invention is further configured such that: a vertical rod is fixed on the crossbeam, and the top of the vertical rod is connected to the roof beam.

[0017] The principle and effect of this technical solution: The vertical rods can better fix the position of the roof beams.

[0018] The present invention is further configured such that: a diagonal brace is fixed to the side wall of the vertical beam, and the top of the diagonal brace is connected to the bottom of the horizontal beam.

[0019] The principle and effect of this technical solution: By setting up diagonal braces, the crossbeam can be provided with auxiliary support. Attached Figure Description

[0020] Figure 1 This is the front view of the present invention; Figure 2 for Figure 1 Enlarged view of point A; Figure 3 for Figure 2 Enlarged view of the anti-hair loss mechanism; Figure 4 for Figure 3 Side view structural diagram. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: The reference numerals in the accompanying drawings include: 110. Vertical beam; 210. Crossbeam; 310. Roof beams; 410. Carriage; 420. Rotating plate; 430. Limiting plate; 440. First limiting bolt; 450. Vertical plate; 460. Second limiting bolt; 510. Support rod; 520. Steel stranded rope; 530. Anchor structure; 550. Rotating roller; 610. Vertical pole; 710. Diagonal brace.

[0022] Example: As attached Figure 1-4 As shown, this utility model discloses a prestressed portal steel frame structure, including vertical beams 110, horizontal beams 210, roof beams 310, a tensioning structure, and an anti-derailment mechanism. Two vertical beams 110 are arranged opposite each other, and a horizontal beam 210 is fixed between the two vertical beams 110. Two roof beams 310 are provided and fixed to the tops of the two vertical beams 110 respectively, with the ends of the two roof beams 310 fixed to each other. The cross-section of the roof beams 310 is I-shaped. The roof beams 310 are I-beams, while the vertical beams 110 and horizontal beams 210 can be channel steel or I-beams, adjusted according to the actual load strength requirements. Vertical rods 610 are fixed to the horizontal beams 210, and the tops of the vertical rods 610 are connected to the roof beams 310. Diagonal braces 710 are fixed to the side walls of the vertical beams 110, and the tops of the diagonal braces 710 are connected to the bottoms of the horizontal beams 210.

[0023] The tensioning structure includes a support rod 510, a steel strand 520, and an anchor assembly 530. The steel strand 520 passes through two vertical beams 110, and both ends of the steel strand 520 are fitted with anchor assemblies 530. The anchor assemblies 530 abut against the outer wall of the vertical beams 110. Each anchor assembly 530 includes a pad and an anchor seat. A wedge-shaped clamp is provided inside the anchor seat. This clamp allows the steel strand 520 to move to one side, and when it moves to the other side, it is clamped by the wedge-shaped clamp. The steel strand 520 passes through the pad and is held by the wedge-shaped clamp inside the anchor seat. A hydraulic jack can pull its end away from the anchor assembly 530. After the hydraulic jack is removed, the steel strand 520 is held by the wedge-shaped clamp, thus stabilizing the prestress applied to the steel strand. The support rod 510 is installed at the bottom of the crossbeam 210, and the bottom of the support rod 510 is connected to the steel strand 520. The tensioning structure also includes a rotating roller 550, which is installed at the bottom of the support rod 510. Multiple sets of support rods 510 and rotating rollers 550 are provided and spaced apart along the length of the crossbeam 210. In this embodiment, taking three support rods 510 positioned at three equal points on the crossbeam 210 as an example, the steel strand 520 is as shown in the attached diagram. Figure 1 , Figure 2As shown, the steel strand 520 has an inclined section and a horizontal section. The horizontal section is located at the bottom of the three rotating rollers 550. The two sides of the horizontal section are transitioned through the inclined section. Then the inclined section passes through the crossbeam 210 and the vertical beam 110 and is fixed to the outside of the crossbeam 210. Through this inclined setting, the prestress of the steel strand 520 can be transferred to the crossbeam 210 through the support rod 510.

[0024] The anti-detachment mechanism includes a slide 410, a rotating plate 420, a limiting plate 430, a first limiting assembly, and a second limiting assembly. The slide 410 is slidably mounted on a roof beam 310. The rotating plate 420 is rotatably mounted at both ends of the slide 410, and the rotating plate 420 can abut against the inner wall of the roof beam 310. The limiting plate 430 is fixed to the top of the slide 410. The first limiting assembly is used to limit the position of the slide 410 relative to the roof beam 310, and the second limiting assembly is used to limit the position of the rotating plate 420 relative to the slide 410. The first limiting assembly includes a first limiting bolt 440, which is threaded into the top of the slide 410, and its end abuts against the top surface of the roof beam 310. The second limiting component includes a vertical plate 450 and a second limiting bolt 460. The vertical plate 450 is fixed to the outer wall of the slide 410, and the second limiting bolt 460 is threaded onto the vertical plate 450. The second limiting bolt 460 can abut against the outer wall of the rotating plate 420.

[0025] When in use, the anti-detachment mechanism can be pre-installed on the roof beam 310 on the ground according to the installation position of the purlin, and then hoisted to the vertical beam 110 by means of hoisting. That is, when working at height, workers only need to disassemble the anti-detachment mechanism and install it on the ground, which is more convenient and quick to use.

[0026] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0027] Among them, insert and sliding insert are mating bodies with holes, the cross section of the shaft or rod matches the hole, and the shaft or rod can slide relative to the hole. Threaded insert is a hole with threads, the shaft or rod is threaded, and the shaft or rod is connected to the mating body by screwing. Detachable installation can be by bolt thread connection or bolt and nut connection, etc., depending on what can be actually achieved.

[0028] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A prestressed portal steel frame structure, characterized in that: include Two vertical beams are provided opposite to each other, and a horizontal beam is fixed between the two vertical beams; The roof beam consists of two beams, each fixed to the top of one of the two vertical beams. The ends of the two roof beams are fixed to each other. The cross-section of the roof beam is in the shape of an "I". Tensioning structure for applying prestress to the crossbeam; The anti-detachment mechanism includes a slide, a rotating plate, a limiting plate, a first limiting component, and a second limiting component. The slide is slidably installed on the roof beam. Rotating plates are rotatably installed at both ends of the slide. The rotating plates can abut against the inner wall of the roof beam. The limiting plate is fixed to the top of the slide. The first limiting component is used to limit the position of the slide relative to the roof beam, and the second limiting component is used to limit the position of the rotating plate relative to the slide.

2. The prestressed portal steel frame structure as described in claim 1, characterized in that: The first limiting component includes a first limiting bolt, which is threaded into the top of the carriage, and the end of the first limiting bolt abuts against the top surface of the roof beam.

3. The prestressed portal steel frame structure as described in claim 1, characterized in that: The second limiting component includes a vertical plate and a second limiting bolt. The vertical plate is fixed to the outer wall of the slide, and the second limiting bolt is threaded onto the vertical plate. The second limiting bolt can abut against the outer wall of the rotating plate.

4. A prestressed portal steel frame structure as described in claim 1, characterized in that: The tensioning structure includes a support rod, a steel strand, and an anchor assembly. The steel strand passes through two vertical beams, and both ends of the steel strand are fitted with anchor assemblies. The anchor assemblies abut against the outer wall of the vertical beams. The support rod is installed at the bottom of the horizontal beam, and the bottom of the support rod is connected to the steel strand.

5. A prestressed portal steel frame structure as described in claim 4, characterized in that: The tensioning structure also includes a rotating roller, which is installed at the bottom of the support rod. Multiple sets of the support rod and rotating roller are provided together and spaced apart along the length of the crossbeam.

6. A prestressed portal steel frame structure as described in claim 1, characterized in that: A vertical rod is fixed to the crossbeam, and the top of the vertical rod is connected to the roof beam.

7. A prestressed portal steel frame structure as described in claim 1, characterized in that: The vertical beam has diagonal bracing members fixed to its side wall, and the top of the diagonal bracing members is connected to the bottom of the horizontal beam.

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