L-shaped tool-type membrane frame for truss assembly

Abstract

This invention provides an L-shaped tool-type membrane frame for assembling tubular trusses, belonging to the technical field of auxiliary equipment for steel structure construction. It includes: a horizontally positioned horizontal support rod; a vertical support column positioned vertically at the rear end of the horizontal support rod; left and right diagonal supports respectively positioned on both sides of the vertical support column for reinforcement and fixation; a front platform base and a rear platform base positioned at the lower parts of the front and rear ends of the horizontal support rod; casters positioned at the lower parts of the front and rear platform bases; a limiting baffle positioned at the front end of the horizontal support rod for fixing the upper chord of the truss; and a corbel support platform that can slide vertically inside the vertical support column and is fixed after height adjustment for supporting the lower chord of the truss. This invention solves the problems of high height, poor stability, difficult precision control, and high cost of existing membrane frames.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary equipment for steel structure construction, and specifically relates to an L-shaped tool-type formwork frame for assembling pipe trusses. Background Technology

[0002] In large-span steel structure buildings such as airport terminals, high-speed rail stations, stadiums, convention centers, and logistics warehouses, inverted triangular trusses are widely used due to their simple structure, light weight, and high strength. However, the traditional construction method of splicing has the following problems: (1) the prefabricated frame is erected at a high height, making the operation difficult; (2) the prefabricated frame has poor stability and is prone to tipping over; (3) the splicing accuracy is difficult to control, affecting the quality of truss forming; (4) full-span scaffolding needs to be erected, resulting in high labor and machinery costs and a long construction period.

[0003] Therefore, there is an urgent need for a large-span inverted triangular truss assembly device that can achieve high efficiency, high precision, low cost, and safety and reliability. Utility Model Content

[0004] The technical problem solved by this utility model is to provide an L-shaped tool-type membrane frame for assembling tubular trusses. The purpose of this utility model is to solve the problems of high height, poor stability, difficult precision control, and high cost of existing membrane frames.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: L-shaped tool-type membrane frame for assembling tubular trusses includes: The horizontal support rod is set horizontally. A vertical support column is vertically installed at the rear end of the horizontal support rod; Left and right diagonal supports are respectively installed on both sides of the vertical support column to reinforce and fix it; The front platform base and the rear platform base are located at the lower parts of the front and rear ends of the horizontal support rod; The casters are located at the lower part of the front platform base and the rear platform base; A limiting baffle is provided at the front end of the horizontal support rod to fix the upper chord of the truss; The corbel support platform is slidably mounted on the inside of the vertical support column and is fixed after height adjustment, used to support the lower chord of the truss.

[0006] As a further limitation of the above scheme, the horizontal support rod is a telescopic rod structure.

[0007] Further defining the above scheme, the horizontal support rod consists of two fitted horizontal support square tubes, which are fixed by set screws.

[0008] Further defining the above solution, the limiting baffle is connected to the horizontal support rod by fixing screws, and its angle can be adjusted by rotation. It is provided with an arc-shaped buckle.

[0009] As a further limitation of the above scheme, the corbel support platform is provided with a support groove adapted to the lower chord of the truss.

[0010] Further defining the above solution, the lower part of the bracket support platform is provided with a bracket lower support plate, which is connected to the vertical support column by a snap-fit ​​assembly to achieve height adjustment and fixation.

[0011] Further defining the above solution, the lower part of the bracket support platform is connected to an electric push rod, which is vertically arranged, with its lower end fixed to a horizontal support rod and its upper end connected to the bracket support platform.

[0012] As a further limitation of the above scheme, the vertical support column is provided with a height scale on its side for adjusting the height of the bracket support platform.

[0013] Further defining the above scheme, the upper part of the vertical support column is provided with a corbel upper baffle for limiting the lower chord of the truss. The upper and lower positions of the corbel upper baffle are adjustable and fixed by screws.

[0014] Further specifying the above scheme, the vertical support column is made of 20# channel steel double-welded together; the caster wheel has a locking function.

[0015] Advantages of this utility model compared to the prior art: 1. This solution adopts an L-shaped tool-type membrane frame, which can be adapted to the structure after the tubular truss is laid on its side, providing strong stability and effectively preventing rollover; 2. In this scheme, the height of the corbel support platform is adjustable. The height of the corbel support platform on the vertical support column can be adjusted according to the different planar positions of the lower chord circular tube. The height can be adjusted to 1 / 2 the elevation of the width of the inverted triangle truss. With the help of scale markings, it is ensured that the horizontal line of the lower chord of the truss is located at the normal line of the vertical plane of the upper chord truss. This facilitates the precision control of the lower chord curvature adjustment and achieves high-precision assembly. 3. The caster wheel design in this solution facilitates the movement and positioning of the L-shaped tool-type membrane frame, improving construction efficiency; 4. The rotatable design of the limiting baffle in this solution can accommodate the fixing of the upper chord at different angles; 5. This solution has a simple structure, is easy to assemble and disassemble, can be reused, reduces costs, and is suitable for the rapid assembly of large-span, hyperbolic, and variable-diameter inverted triangular truss structures. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the usage state of this utility model. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0019] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0020] Please see Figure 1-3 The embodiments of this utility model are described in detail below.

[0021] Example: See Figure 1 As shown, the L-shaped tool-type membrane frame used for assembling tubular trusses includes a horizontally arranged horizontal support rod 1; a vertical support column 2 is vertically arranged at the rear end of the horizontal support rod 1; a left diagonal support 3 and a right diagonal support 4 are respectively arranged on both sides of the vertical support column 2 to strengthen and fix it, thereby enhancing the overall stability; a front platform base 5 and a rear platform base 6 are arranged at the lower parts of the front and rear ends of the horizontal support rod 1; and casters 7 are arranged at the lower parts of the front platform base 5 and the rear platform base 6, with a locking function to facilitate movement and fixation.

[0022] In this embodiment, the horizontal support rod 1 is a telescopic rod structure. Specifically, the horizontal support rod 1 consists of two fitted horizontal support square tubes 1-1, which are fixed by set screws 14 to achieve length adjustment.

[0023] In this embodiment, a limiting baffle 8 is provided at the front end of the horizontal support rod 1. The limiting baffle 8 is connected to the horizontal support rod 1 by fixing screws 15. The position can be adjusted by rotating according to the angle of the upper chord of the truss, which is used to fix the upper chord of the truss and improve the assembly stability.

[0024] Preferably, the limiting baffle 8 is provided with an arc-shaped buckle 8-1 for matching the shape of the upper chord of the truss.

[0025] In this embodiment, the corbel support platform 9 is slidably mounted inside the vertical support column 2 via a sliding structure, and is fixed after height adjustment, for supporting the lower chord of the truss. The corbel support platform 9 is provided with a support groove 9-1 adapted to the lower chord of the truss to improve support stability.

[0026] This embodiment illustrates two types of limiting support structures at the lower part of the corbel support platform 9: First type: See reference Figure 1 As shown, the lower part of the bracket support platform 9 is provided with a bracket lower support plate 11. The bracket lower support plate 11 is connected to the vertical support column 2 through a buckle assembly 12 to achieve height adjustment and fixation.

[0027] First type: See reference Figure 2 As shown, the lower part of the bracket support platform 9 is connected to an electric push rod 16. The electric push rod 16 is set vertically, with its lower end fixed to the horizontal support rod 1 and its upper end connected to the bracket support platform 9.

[0028] The height of the bracket support platform can be adjusted and fixed by snap-fit ​​or electric push rod. The vertical support column has height scale on the side for easy and precise control of elevation.

[0029] In this embodiment, the upper part of the vertical support column 2 is provided with a corbel upper baffle 10, which is used to limit the lower chord of the truss and further enhance stability. The upper baffle 10 is adjustable in height and is fixed with screws.

[0030] Preferably, the vertical support column 2 is made of 20# channel steel double-welded together, which makes the structure sturdy.

[0031] In use: The truss is first hoisted in sections according to the stress conditions, each section being assembled from several truss segment unit columns. Each segment of the truss is supported at both ends by an L-shaped tool-type formwork frame. This method involves assembling the truss by rotating it 90° on the ground and laying it sideways. The hyperbolic arc-shaped variable-diameter inverted triangular truss is laid sideways on the L-shaped tool-type formwork frame, and the entire truss is assembled on the ground through vertical projection positioning, ground layout, segment splicing, and ground assembly.

[0032] When using an L-shaped tool-type membrane support, refer to... Figure 3 As shown, first, adjust the height of the corbel support platform 9 according to the truss design drawings, positioning it at half the elevation of the inverted triangular truss width, and fix it using snap fasteners 12 or electric push rods 16. Move each membrane frame to the ground positioning and layout point, and lock the casters 7. Lay the segmented truss at a 90° angle on the L-shaped membrane frame, placing its lower chord in the support groove 9-1 of the corbel support platform 9, and limiting it with the upper baffle 10 of the corbel. Place the upper chord on the horizontal support rod 1, adjust the angle of the limiting baffle 8 so that its arc-shaped snap fastener 8-1 fits against the upper chord, and fix it with fixing screws 15. After each L-shaped membrane frame is supported, the truss can be positioned, assembled, and welded.

[0033] This utility model achieves the advantages of adjustable height, movable position, stable support, and simple operation of the membrane frame, and is suitable for side-lying assembly of inverted triangular tube trusses with different spans and curvatures.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An L-shaped tool-type membrane frame for assembling tubular trusses, characterized in that: include: Horizontal support rod (1), which is set horizontally; A vertical support column (2) is vertically installed at the rear end of the horizontal support rod (1); Left diagonal support (3) and right diagonal support (4) are respectively provided on both sides of the vertical support column (2) to strengthen and fix it; The front platform base (5) and the rear platform base (6) are located at the lower parts of the front and rear ends of the horizontal support rod (1); The casters (7) are located at the lower part of the front platform base (5) and the rear platform base (6); A limiting baffle (8) is provided at the front end of the horizontal support rod (1) to fix the upper chord of the truss; The corbel support platform (9) is slidably disposed inside the vertical support column (2) and fixed after height adjustment, and is used to support the lower chord of the truss.

2. The L-shaped tool-type membrane frame for assembling tubular trusses according to claim 1, characterized in that: The horizontal support rod (1) is a telescopic rod structure.

3. The L-shaped tool-type membrane frame for assembling tubular trusses according to claim 2, characterized in that: The horizontal support rod (1) consists of two fitted horizontal support square tubes (1-1) and is fixed by a set screw (14).

4. The L-shaped tool-type membrane frame for assembling tubular trusses according to claim 1, characterized in that: The limiting baffle (8) is connected to the horizontal support rod (1) by fixing screws (15), and the angle can be adjusted by rotation. It is provided with an arc-shaped buckle (8-1).

5. The L-shaped tool-type membrane frame for assembling tubular trusses according to claim 1, characterized in that: The corbel support platform (9) is provided with a support groove (9-1) that is adapted to the lower chord of the truss.

6. The L-shaped tool-type membrane frame for assembling tubular trusses according to claim 1, characterized in that: The lower part of the cow leg support platform (9) is provided with a cow leg lower support plate (11). The cow leg lower support plate (11) is connected to the vertical support column (2) through a buckle assembly (12) to achieve height adjustment and fixation.

7. The L-shaped tool-type membrane frame for assembling tubular trusses according to claim 1, characterized in that: The lower part of the cow leg support platform (9) is connected to an electric push rod (16). The electric push rod (16) is set vertically, with its lower end fixed to the horizontal support rod (1) and its upper end connected to the cow leg support platform (9).

8. The L-shaped tool-type membrane frame for assembling tubular trusses according to claim 1, characterized in that: The vertical support column (2) has a height scale (13) on its side for adjusting the height of the bracket support platform (9).

9. The L-shaped tool-type membrane frame for assembling tubular trusses according to claim 1, characterized in that: The upper part of the vertical support column (2) is provided with a bracket upper baffle (10) for limiting the lower chord of the truss. The upper and lower positions of the bracket upper baffle (10) are adjustable and fixed by screws.

10. The L-shaped tool-type membrane frame for assembling tubular trusses according to claim 1, characterized in that: The vertical support column (2) is made of 20# channel steel double-welded; the caster wheel (7) has a locking function.

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