Fabricated formwork opposite-pulling structure for precast concrete unit

Abstract

The utility model relates to an assembly type template opposite-pulling structure for precast concrete members, which comprises opposite-pulling components and a plurality of hoisting sleeves, at least two groups of opposite-pulling components are uniformly arranged on a template along the length direction, each opposite-pulling component comprises a threaded rod, a steel wire and a locking piece, the two threaded rods are respectively arranged on the templates on the two sides in a penetrating manner, and the steel wire and the locking piece are arranged on the opposite-pulling components. The steel wire is located between the formworks on the two sides, the two ends of the steel wire are fixedly connected with the opposite ends of the two threaded rods respectively, the locking pieces are arranged on the sides, located on the opposite sides of the formworks on the two sides, of the two threaded rods, and the locking pieces abut against the outer side walls of the formworks and are fixedly connected with the threaded rods in a threaded mode. And a plurality of hoisting sleeves are arranged at cross points of the steel wires of the opposite-pulling assemblies in the front-back and left-right directions and are fixedly connected with the steel wires. The steel wire is detachably connected with the threaded rod, so that the threaded rod after foundation forming can be recycled, the hoisting sleeve is positioned while the opposite-pulling assembly is tensioned, the cost is reduced, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation formwork, in particular to an assembled formwork tensioning structure for prefabricated concrete components. Background Art

[0002] As the State Grid's demand for prefabricated components for assembled ring network cabinets increases, it involves a variety of power infrastructure products such as ring network cabinet foundations, box transformer foundations, cable manholes, etc., and the structure, size, opening position, etc. of the foundation components of each product are very different. Traditional power foundation prefabricated parts usually use steel formwork to support the steel bars and then cast concrete to prefabricate. The steel formwork is heavy and difficult to demould during construction. It is not easy to modify and has low plasticity. The overall cost is high and cannot meet the diverse needs of customers.

[0003] At present, thermoplastic plastic formwork has become another new generation product after wooden formwork, combined steel formwork and all-steel large formwork due to its excellent plasticity, easy transformation and low cost. However, when this kind of assembled plastic formwork is used for the prefabrication of power infrastructure components, it is difficult to use it directly in component production because the plastic formwork does not have the lifting sleeve positioning device and tensioning and tightening device provided on the steel formwork. It is necessary to manually position and tighten the plastic formwork and then manually position the lifting sleeve and then weld and fix it.

[0004] The tensioning and fastening device can ensure the tightness between the templates on both sides of the foundation. The existing tensioning and fastening device usually passes a whole tension rod between the templates on both sides for tensioning. The tension rod is finally cast as one with the foundation. After the foundation is formed, the redundant tension rod needs to be cut off, which is time-consuming, labor-intensive, and costly and cannot be reused. Four lifting sleeves are usually set. During prefabrication and fixing, it is necessary to ensure that the four sleeves are vertically symmetrically distributed. However, manual positioning often leads to uneven distribution of the four sleeves due to inaccurate positioning, resulting in problems such as skewness during lifting. Utility Model Content

[0005] The utility model aims at the deficiencies of the prior art and provides a novel pulling structure for positioning and fixing a sleeve while fixing a plastic template, thereby solving the problems in the background art.

[0006] The utility model is realized by the following technical scheme: an assembled formwork tensioning structure for precast concrete components, comprising a tensioning assembly, at least two groups of tensioning assemblies are evenly arranged on the formwork along the length direction, the tensioning assembly comprises a threaded rod, a steel wire and a locking piece, two threaded rods are provided and respectively penetrate the formworks on both sides, the steel wire is located between the formworks on both sides and the two ends of the steel wire are respectively fixedly connected to the opposite ends of the two threaded rods, the two threaded rods are located on the opposite sides of the formworks on both sides and are provided with the locking piece, the locking piece abuts against the outer wall of the formwork and is screwed and fixed to the threaded rod;

[0007] It also includes a plurality of lifting sleeves, which are evenly distributed in a frame surrounded by templates on all sides. The lifting sleeves are arranged at the intersection of the steel wires of the front-to-back direction tensioning assembly and the left-to-right direction tensioning assembly and are fixedly connected to the steel wires.

[0008] This solution uses locking parts to lock the threaded rods on the two side templates to achieve clamping and locking of the two side templates. The two threaded rods are connected by steel wire, which is low-cost and easy to pass through and use in the tied steel bars. At the same time, the threaded rods and steel wires are easy to separate after the foundation is formed. The lifting sleeves are positioned by the front and back, left and right pulling components so that the four sleeves are evenly distributed and no manual repositioning is required.

[0009] As an optimization, the locking member includes a block sleeved on the threaded rod and a fastening nut screwed to the threaded rod, the block abuts against the outer wall of the template, and the fastening nut is located on the side of the block away from the template and abuts against the outer wall of the block. The locking member of this optimization solution abuts against the outer wall of the template through the block, and the threaded rod is locked by rotating the fastening nut.

[0010] As an optimization, the clamp block is a mountain-shaped clamp, and a long tube is adapted to be clamped in the two clamping grooves of the mountain-shaped clamp, and the long tube abuts against the outer wall of the template. This optimization solution abuts the long tube against the template, and the force application range is wider, so that the tension of multiple groups of tension components on the template can be evenly distributed.

[0011] As an optimization, a sealing gasket is sleeved on the threaded rod to seal against the inner wall of the template. This optimization solution seals the perforation of the threaded rod on the template through the sealing gasket to prevent leakage of slurry.

[0012] As an optimization, the opposite ends of the two threaded rods are screwed with first nuts, the first nuts are fixed with fixing rings, and the steel wire is fixed with the fixing rings. In this optimization scheme, the threaded rods and the first nuts are screwed, and the first nuts are cast on the foundation after forming, and the threaded rods can be removed for recycling.

[0013] As an optimization, four pull rings are evenly distributed and fixed on the outer wall of the lifting sleeve along the circumferential direction, and the steel wire of the tension assembly is fixed to the pull ring. The pull rings around the lifting sleeve of this optimization solution are fixedly stretched with the circumferential steel wire, which is convenient for fixing the lifting sleeve.

[0014] The beneficial effects of the utility model are as follows: within the frame composed of the templates, the front and rear and left and right templates are clamped and fastened by the tensioning components, and the tensioning components connect the templates on both sides by steel wires, which saves costs and is convenient for installation and connection compared to the whole tension rod; the tensioning components are evenly distributed on the templates, and multiple lifting sleeves are fixed at the intersections formed by the steel wires, so as to achieve evenly symmetrical distribution and positioning, without the need for manual re-positioning, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a top view of the formwork support status;

[0016] Figure 2 It is a schematic diagram of the tension component structure;

[0017] Figure 3 It is a schematic diagram of the lifting sleeve structure;

[0018] Figure 4 Provide schematic diagram for installation of tie components and formwork;

[0019] Figure 5 It is a schematic diagram of the structure of template 1;

[0020] Figure 6 Schematic diagram of the structure of template 2;

[0021] As shown in the figure:

[0022] 1. Template, 2. Threaded rod, 3. Steel wire, 4. First nut, 5. Mountain-shaped buckle, 6. Fastening nut, 7. Fixing ring, 8. Sealing gasket, 9. Lifting sleeve, 10. Pull ring, 11. Long tube. DETAILED DESCRIPTION

[0023] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0024] like Figures 1 to 4 As shown, an assembled formwork tensioning structure for precast concrete components includes a tensioning assembly and a plurality of lifting sleeves 9. At least two groups of tensioning assemblies are evenly arranged on the formwork 1 along the length direction. In this embodiment, two groups of tensioning assemblies are arranged on the formwork 1. The tensioning assemblies are evenly distributed on the formwork 1 to facilitate the positioning of the lifting sleeves, so that the plurality of lifting sleeves are evenly distributed.

[0025] like Figure 1 , 2 As shown, the tensioning assembly includes a threaded rod 2, a steel wire 3 and a locking member. The threaded rod 2 is provided with two and respectively penetrates the templates 1 on both sides. The steel wire 3 is located between the templates 1 on both sides and the two ends of the steel wire 3 are respectively fixed to the opposite ends of the two threaded rods 2. In this embodiment, the opposite ends of the two threaded rods 2 are screwed with a first nut 4, and the first nut 4 is fixed with a fixing ring 7. The steel wire 3 is fixed to the fixing ring 7, and the threaded rod 2 is screwed with the first nut 4. After molding, the first nut 4 is cast on the foundation, and the threaded rod can be removed for recycling, which further reduces the cost.

[0026] The threaded rod 2 is sleeved with a sealing gasket 8 which is in close contact with the inner wall of the template 1 and seals the perforations of the threaded rod on the template 1 through the sealing gasket 8 to prevent leakage of slurry.

[0027] like Figure 1 , 4As shown, the two threaded rods 2 are located on the opposite sides of the templates 1 and are provided with the locking member, the locking member abuts against the outer wall of the template 1 and is screwed and fixed with the threaded rod 2. The locking member includes a clamping block sleeved on the threaded rod 2 and a fastening nut 6 screwed with the threaded rod 2, the clamping block abuts against the outer wall of the template 1, and the fastening nut 6 is located on the side of the clamping block away from the template 1 and abuts against the outer wall of the clamping block.

[0028] The clamping block of this embodiment is a mountain-shaped buckle 5, and a long tube 11 is adapted to be clamped in the two clamping grooves of the mountain-shaped buckle, and the long tube abuts against the outer wall of the template 1. Through the abutment of the long tube 11 and the template 1, the force application range is wider, so that the tension of multiple groups of tension components on the template 1 can be evenly distributed. The long tube 11 of this embodiment is a steel tube, and the length of the long tube 11 is 4 to 6 cm greater than the length of the template 1, so that the long tube 1 can abut against both ends of the template 1, ensuring uniform force distribution, and at the same time can tighten the entire template to enhance the fastening effect between the templates.

[0029] like Figure 1 , 3 As shown, the present embodiment is provided with four lifting sleeves 9, and the four lifting sleeves 9 are evenly distributed in the frame surrounded by the templates 1 on all sides. The lifting sleeves 9 are arranged at the intersections of the steel wires 3 of the front-to-back pulling components and the left-to-right pulling components and are fixedly connected to the steel wires 3. Since the front-to-back and left-to-right pulling components are evenly distributed, the intersections of the steel wires 3 of the pulling components are naturally evenly and symmetrically distributed. Therefore, the lifting sleeves 9 are positioned through the intersections of the steel wires 3, and the four lifting sleeves 9 are evenly and symmetrically distributed, and no manual re-positioning is required, which greatly saves positioning time.

[0030] In this embodiment, four pull rings 10 are evenly distributed and fixedly connected to the outer wall of the lifting sleeve 9 in the circumferential direction, and the steel wire 3 of the tensioning assembly is fixedly connected to the pull rings 10 .

[0031] After the two threaded rods 2 in this embodiment are connected by the steel wire 3, a fastening gap is left between the first nut 4 at the end of the threaded rod 2 and the inner wall of the template 1 so that the fastening nut 6 can be adjusted to lock the threaded rod 2. The pull ring 10 around the lifting sleeve 9 and the circumferential steel wire 3 are tied and fixed with fine steel wire. While locking the threaded rod 2, the lifting sleeve 9 can be tightened to keep it in a vertical state. The operation is convenient and no welding and fixing are required, which saves time and effort.

[0032] How to use: Figure 5 The template shown is used for the formwork of the top plate and base components of the prefabricated power foundation. The formwork is supported by assembling four templates with bolts according to the required top plate or base structure, such as Figure 6The template 2 shown is used for the formwork of the wall components of the prefabricated power foundation. The formwork is supported by the template 2 and the template 1 bolted together according to the required wall structure. This is the existing technology for plastic formwork support and will not be elaborated here. After the template 1 is assembled, the threaded rod 2 and the first nut 4 of the tension component are screwed and fixed. The two threaded rods 2 of the tension component are respectively passed through the through holes of the templates 1 on both sides from the inside to the outside. The ends of the threaded rods 2 are successively passed through the template 1 and the mountain-shaped buckle 5 and then screwed with the fastening nut 6. The fixing rings 7 at the ends of the two threaded rods 2 and the two ends of the steel wire 3 are tied and connected. The long tube 11 is engaged in the slot of the mountain-shaped buckle 5. The fastening nut 6 is tightened so that the two threaded rods 2 tighten the steel wire 3 to a taut state, thereby locking the templates on both sides. 1. Place four lifting sleeves 9 vertically on the four intersections formed by the steel wires 3 distributed front and back and left and right, and tie and fix the pull ring 10 of the lifting sleeve 9 and the steel wire 3 with fine steel wires. The positioning and fixing of the lifting sleeve 9 is completed. The operation is simple, time-saving and labor-saving. After completion, concrete can be cast. After the concrete is formed, loosen the fastening nut 6, remove the template 1, and remove the screw-connected threaded rod 2. The prefabrication of the power foundation component is completed, and there is no need to cut the threaded rod 2, which further improves the efficiency.

[0033] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. An assembled formwork tension structure for precast concrete components, comprising a tension assembly, characterized in that: At least two groups of tensioning components are evenly arranged on the template (1) along the length direction, and the tensioning components include threaded rods (2), steel wires (3) and locking parts. The threaded rods (2) are provided with two and are respectively passed through the templates (1) on both sides. The steel wires (3) are located between the templates (1) on both sides, and the two ends of the steel wires (3) are respectively fixed to the opposite ends of the two threaded rods (2). The two threaded rods (2) are located on the opposite sides of the templates on both sides and are provided with the locking parts. The locking parts abut against the outer wall of the template (1) and are screwed and fixed to the threaded rods (2); It also includes a plurality of lifting sleeves (9), which are evenly distributed in a frame surrounded by the templates on all sides, and the lifting sleeves (9) are arranged at the intersection of the steel wires (3) of the front-to-back direction tensioning assembly and the left-to-right direction tensioning assembly and are fixedly connected to the steel wires (3).

2. The prefabricated formwork tension structure for precast concrete components according to claim 1, characterized in that: The locking member comprises a clamping block sleeved on the threaded rod (2) and a fastening nut (6) threadedly connected to the threaded rod, the clamping block abuts against the outer wall of the template, and the fastening nut (6) is located on a side of the clamping block away from the template (1) and abuts against the outer wall of the clamping block.

3. The assembled formwork tension structure for precast concrete components according to claim 2, characterized in that: The clamping block is a mountain-shaped clamping buckle (5), and a long tube (11) is adapted to be clamped in two clamping grooves of the mountain-shaped clamping buckle, and the long tube abuts against the outer side wall of the template (1).

4. The assembled formwork tension structure for precast concrete components according to claim 1, characterized in that: The threaded rod (2) is sleeved with a sealing gasket (8) which is in close contact with the inner wall of the template (1) for sealing.

5. The assembled formwork tension structure for precast concrete components according to claim 1, characterized in that: The opposite ends of the two threaded rods (2) are threadedly connected with first nuts (4), the first nuts are fixedly connected with a fixing ring (7), and the steel wire (3) and the fixing ring (7) are fixedly connected.

6. The assembled formwork tension structure for precast concrete components according to claim 1, characterized in that: Four pull rings (10) are evenly distributed and fixedly connected to the outer wall of the lifting sleeve (9) in the circumferential direction, and are used to fix the steel wire (3) of the tensioning assembly and the pull rings (10).

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