Length-adjustable slip form with flexible template

Abstract

The utility model discloses a length-adjustable slip form with a flexible template, which comprises a lifting guide device and a slip form device, the flexible template is arranged on one side of the slip form device, and a side form is arranged on the other side of the slip form device. Practical application shows that the problems that in the prior art, the width and thickness of a flat toe plate are complex and variable, and the flat toe plate is difficult to be tightly attached to an excavation slope for pouring are well solved, good contact between a slip form and the excavation slope is achieved, concrete is continuously formed, pouring quality is improved, a large number of formworks and manpower resources are saved, and construction cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of toe board construction and relates to a sliding formwork with a flexible formwork and adjustable length. Background Art

[0002] Concrete face plate, perimeter toe plate and grouting system are the main anti-seepage structures of face rockfill dam, which are required to have sufficient strength, durability and the ability to adapt to deformation. The toe plate and concrete face plate are connected by the perimeter seam with water stop, together forming the anti-seepage body above the dam foundation. At the same time, the toe plate is connected as a whole with the stable bedrock after consolidation grouting and curtain grouting, closing the seepage channel below the ground and forming a complete anti-seepage system.

[0003] In order to speed up the construction progress of the toe board and improve the construction quality of the toe board, the slipform construction process was adopted for concrete pouring. The left and right bank toe boards of the existing engineering concrete panel gravel dam are connected by the top of the high toe pier (elevation 1510m) to the bottom of the wave wall (elevation 1703.2m), and are connected by the high toe pier in the middle. The left bank concrete toe board adopts the flat toe board form, with variable width and thickness design along the elevation. The width varies along the elevation of 5m, 6m, 8m, 9m, 13m, 15m, and 20m, and the thickness varies from 0.5 to 1.17m. After actual application, it was found that the toe board has the problem of variable width and thickness, and it is difficult to pour close to the excavated slope. Therefore, in view of the above-mentioned actual working conditions and construction requirements, a variable length flexible formwork was designed and produced. After actual application, it was found that it can well solve the problem of variable width and thickness of the toe board. Utility Model Content

[0004] The utility model aims to provide a sliding form with a flexible formwork and adjustable length, which solves the problem in the prior art that the width and thickness of the flat toe plate are complex and changeable, and it is difficult to cast close to the excavated slope.

[0005] The technical scheme adopted by the utility model is a sliding form with a flexible template and adjustable length, comprising a sliding form device, a flexible template is arranged on one side of the sliding form device, and a side form is arranged on the other side of the sliding form device.

[0006] The utility model is also characterized in that:

[0007] The sliding formwork device comprises a first sliding formwork and a second sliding formwork. A flexible template is arranged on one side of the first sliding formwork, a connecting device is arranged between the first sliding formwork and the second sliding formwork, a side template is arranged on the other side of the second sliding formwork, and a working platform and a plastering platform are arranged on both the first sliding formwork and the second sliding formwork.

[0008] The first sliding formwork and the second sliding formwork are both rectangular frame structures, which are made of 32b national standard I-beams and channel steels welded together. The internal reinforcement of the rectangular frame structure is made of No. channel steel. The second sliding formwork is designed and manufactured according to the actual toe board width.

[0009] The plastering platform includes a first plastering platform and a second plastering platform. The first plastering platform is arranged on the rear side of the first sliding formwork, and the second plastering platform is arranged on the rear side of the second sliding formwork. The first plastering platform and the second plastering platform both include multiple hollow square steels and a frame platform. Each hollow square steel is formed by butt-welding two short hollow square steels with an included angle of 148°. Connecting lugs are arranged on the rear side of the first sliding formwork and the second sliding formwork. The multiple hollow square steels are connected to the lugs by bolts and welding. A rectangular frame platform with a mesh is set on the multiple hollow square steels.

[0010] The working platform includes a first working platform and a second working platform; the first working platform is located directly above the first sliding formwork, and the second working platform is located directly above the second sliding formwork. The first working platform and the second working platform both include a plurality of brackets welded from hollow square steels, the brackets are in the shape of a "door", a rectangular frame is welded above the brackets, and a steel plate is welded above the rectangular frame; chutes are respectively arranged on the steel plates of the first working platform and the second working platform.

[0011] The first guardrail is welded to the rear edge of the first plastering platform, the third guardrail is welded to the rear edge of the second plastering platform, the second guardrail is welded to the rear edge of the first working platform, and the fourth guardrail is welded to the rear edge of the second working platform. The first guardrail, the second guardrail, the third guardrail and the fourth guardrail are all formed by welding multiple circular steel pipes arranged vertically and horizontally.

[0012] The flexible formwork includes a belt and a pressure roller. The first sliding formwork is fixedly connected to a plurality of pressure rollers at equal intervals by bolts, and the belts are tightly wrapped around the outer sides of the plurality of pressure rollers. The side formwork adopts a conventional formwork.

[0013] The connecting device includes two load-bearing steel plates, which are respectively welded to the opposite end faces of the first sliding mold and the second sliding mold. Two rows of bolt holes are opened opposite to each other in the two load-bearing steel plates. The two rows of bolt holes are fixedly connected by bolts, and two anti-slip bolts are installed at the bottom ends of the two load-bearing steel plates.

[0014] The lifting guide mechanism includes two winches arranged in parallel, a wire rope is led out from the winch drum, a fixed pulley is fixed on the winch, the wire rope is wound on the fixed pulley, two traction lifting eyes are welded on the first slide and the second slide respectively, and the lower end hook of the wire rope is hung in the circular hole of the traction lifting eye; 8mm thick steel plates are welded to the bottom of the first slide and the second slide as slide plates, and hollow square steel slide rails are arranged on the slide plates, and two lifting lifting eyes are welded on the front and rear sides of the first slide and the second slide respectively.

[0015] The first safety device and the second safety device are welded on the first working platform and the second working platform respectively; the first safety device and the second safety device have the same structure, and both include a channel steel frame chassis, a safety rope reel, a locking assembly and a turntable. Taking the first sliding form as an example, the channel steel frame chassis is fixedly arranged on the first sliding form, the safety rope reel is fixedly arranged on the channel steel frame chassis, the turntable is arranged on the safety rope reel, and the safety rope drawn out from the safety rope reel has a locking assembly arranged at the end of the safety rope reel.

[0016] The beneficial effects of the utility model are as follows: the utility model has a slipform with a flexible template and adjustable length, which can adapt to the situation where the structural characteristics of the flat toe plate on the inclined surface are complex, realize the pouring of the toe plate concrete close to the slope, realize rapid and continuous forming of the concrete, and ensure good contact between the slipform and the excavated slope, so that the concrete is continuously formed and the pouring quality is improved, saving a lot of templates and human resources, reducing construction costs, and effectively accelerating construction progress and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the sliding formwork with a flexible template and adjustable length of the utility model;

[0018] Figure 2 It is a top view of the sliding formwork with a flexible formwork and adjustable length of the utility model;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the flexible template of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the connection device of the utility model with adjustable length sliding form;

[0021] In the figure, 1. fixed pulley, 2. steel wire rope, 3. chute, 4. hollow square steel slide rail, 5. steel bar, 6. bank slope bedrock, 7. flexible formwork, 8. cable drum, 9. first safety device, 10. first sliding formwork, 11. first plastering platform, 12. first protective railing, 13. first working platform, 14. distribution box, 15. second protective railing, 16. connecting device, 17. second sliding formwork, 18. second plastering platform, 19. third protective railing, 20. fourth protective railing, 21. second working platform, 22. second safety device, 23. lifting eye, 24. traction eye, 25. side formwork. DETAILED DESCRIPTION

[0022] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0023] Example 1

[0024] The utility model has a sliding formwork with a flexible formwork and an adjustable length, and the structure is as follows Figure 1 and Figure 2 As shown, it includes a slipform device, a flexible formwork 7 is arranged on one side of the slipform device, the flexible formwork 7 abuts against the bedrock 6 of the slope, and a side formwork 25 is arranged on the other side of the slipform device. The slipform device moves as a whole along the slope direction of the toe board through the lifting guide device. After the slipform device slides, the plastering personnel perform manual finishing.

[0025] Example 2

[0026] The slipform device includes a first slipform 10 and a second slipform 17. A flexible formwork 7 is provided on one side of the first slipform 10. A connecting device 16 is provided between the first slipform 10 and the second slipform 17. A side form 25 is provided on the other side of the second slipform 17. A working platform for dismantling the flip formwork and a plastering platform for plastering concrete are provided on both the first slipform 10 and the second slipform 17. A cable drum 8 is provided on the first slipform 10, and a distribution box 14 is provided on the plastering platform. The cable drum 8 winds up the power transmission line connected to the distribution box 14 to prevent the redundant wires from interfering with the construction when the slipform rises.

[0027] The first sliding form 10 and the second sliding form 17 are both rectangular frame structures, which are made of 32b national standard I-beams and channel steels welded together. The internal reinforcement of the rectangular frame structure is made of No. 10 channel steel. The second sliding form 17 is designed and manufactured according to the actual toe board width.

[0028] The plastering platform includes a first plastering platform 11 and a second plastering platform 18. The first plastering platform 11 is arranged on the rear side of the first sliding form 10, and the second plastering platform 18 is arranged on the rear side of the second sliding form 17. The first plastering platform 11 and the second plastering platform 18 both include multiple hollow square steels and a frame platform. Each hollow square steel is formed by butt-welding two short hollow square steels with an angle of 148°. Connecting lugs are arranged on the rear side of the first sliding form 10 and the second sliding form 17. The multiple hollow square steels are connected to the lugs by bolts and welding. A rectangular frame platform with a mesh is set on the multiple hollow square steels.

[0029] The working platform includes a first working platform 13 and a second working platform 21; the first working platform 13 is located directly above the first sliding form 10, and the second working platform 21 is located directly above the second sliding form 17. The first working platform 13 and the second working platform 21 both include a plurality of brackets welded from hollow square steels, the brackets are "door" shaped brackets, a rectangular frame is welded above the brackets, and a steel plate is welded above the rectangular frame. Chutes 3 are respectively arranged on the steel plates of the first working platform 13 and the second working platform 21.

[0030] The first guardrail 12 is welded to the rear edge of the first plastering platform 11, the third guardrail 19 is welded to the rear edge of the second plastering platform 18, the second guardrail 15 is welded to the rear edge of the first working platform 13, and the fourth guardrail 20 is welded to the rear edge of the second working platform 21. The first guardrail 12, the second guardrail 15, the third guardrail 19, and the fourth guardrail 20 are all formed by welding a plurality of circular steel pipes arranged vertically and horizontally to ensure the safety of the construction workers.

[0031] like Figure 3 As shown, the flexible template 7 includes a belt 71 and a pressure roller 72. The first sliding form 10 is fixedly connected to a plurality of pressure rollers 72 at equal intervals by bolts. The pressure rollers 72 are similar to bearings. The outer sides of the plurality of pressure rollers 72 are tightly wrapped around the belt 71, and rotate under pressure, driving the belt 71 to move forward during the lifting process of the sliding form. The side form 25 adopts a conventional template.

[0032] like Figure 4 As shown, the connecting device 16 includes two load-bearing steel plates, which are respectively welded to the opposite end faces of the first sliding form 10 and the second sliding form 17. Two rows of bolt holes are relatively opened in the two load-bearing steel plates, and the two rows of bolt holes are fixedly connected by bolts. Two anti-slip bolts are installed at the bottom ends of the two load-bearing steel plates to prevent misalignment at the connection when the first sliding form 10 and the second sliding form 17 are pulled up.

[0033] Example 3

[0034] The lifting guide mechanism includes two winches arranged in parallel, a steel wire rope 2 is led out from the winch drum, a fixed pulley 1 is fixed on the winch, the steel wire rope 2 is wound on the fixed pulley 1, two traction ears 24 are welded on the first slide 10 and the second slide 17 respectively, and the lower end hook of the steel wire rope 2 is hung in the circular hole of the traction ear 24; 8mm thick steel plates are welded on the bottom of the first slide 10 and the second slide 17 as slide plates, and hollow square steel slide rails 4 are arranged on the slide plates as the moving tracks of the first slide 10 and the second slide 17 for easy sliding; in order to facilitate slide consignment, two lifting ears 23 are welded on the front and rear sides of the first slide 10 and the second slide 17 respectively.

[0035] In order to avoid the loss of control caused by the sudden breaking of the wire rope 2, the first safety device 9 and the second safety device 22 are welded on the first working platform 13 and the second working platform 21 respectively; the first safety device 9 and the second safety device 22 have the same structure, both of which include a channel steel frame chassis, a safety rope drum, a locking assembly and a turntable. Taking the first sliding form 10 as an example, the channel steel frame chassis is fixedly arranged on the first sliding form 10, and a safety rope drum is fixedly arranged on the channel steel frame chassis. A turntable is arranged on the safety rope drum, and a safety rope drawn out from the safety rope drum is provided with a locking assembly at the end of the safety rope drum. The safety rope of the safety rope drum is locked and fixed by the locking assembly, and the safety rope is extended and shortened by rotating the coaxial safety rope drum by the turntable. The safety rope is connected to the toe plate steel mesh, and the locking assembly adopts a latch locking member.

[0036] The working process of the slipform with flexible formwork and adjustable length of the utility model includes a preparation stage and a construction stage, which is specifically implemented according to the following steps:

[0037] Preparation stage:

[0038] (1) Install the winch: Place two winches in parallel on the working platform and press them down with large concrete blocks. At the same time, fix the chassis of the winch to the working platform with steel piles to prevent sliding or overturning.

[0039] (2) Setting up the slide rails: placing steel bars 5 and water stops in the toe board warehouse surface, setting up hollow square steel slide rails 4 on the top steel bars 5, and arranging two hollow square steel slide rails 4 under the first slide form 10 and the second slide form 17 respectively, as the moving tracks of the first slide form 10 and the second slide form 17.

[0040] (3) Installing the pulley: According to the height characteristics of the hollow square steel slide rail 4 and the traction lug 24, ensure that the top height of the wheel groove of the fixed pulley 1 is reasonable so that the wire rope 2 can be parallel to the slope direction of the toe board.

[0041] (4) Sliding form assembly: The first sliding form 10 and the second sliding form 17 are connected by bolts on the connecting device 16, and the flexible formwork 7 is connected to the first sliding form 10 by bolts.

[0042] (5) Lowering the slipform: The crane wire rope hook is hooked into the circular holes of the lifting lugs 23 of the first slipform 10 and the second slipform 17 respectively. After hoisting to the predetermined initial position, the hook of the wire rope 2 is hooked into the circular hole of the traction lug 24, and the connecting hook between the crane wire rope and the lifting lug 23 is removed; at the same time, the two winches are turned on and adjusted synchronously, and the slipform slides downward under the action of its own weight. When it is transported to the predetermined construction position, the reducer or brake is turned on to achieve accurate and stable stopping; the safety ropes on the first safety device 9 and the second safety device 22 are tied to the toe plate reinforcement.

[0043] (6) Supporting the side formwork 25: A conventional formwork is set up on the side of the second sliding formwork 17 to ensure that the formwork has an accurate shape, an accurate supporting position, and a firm support.

[0044] (7) Setting up chute 3: Use chute 3 to transport concrete to the designated pouring position. A rotatable movable chute is set at the lower end of the chute to ensure uniform distribution of concrete into the warehouse.

[0045] (8) Acceptance of warehouse surface: Use high-pressure air to remove debris from the pouring location to ensure that it is clean and free of debris, water accumulation, and scum. After the construction management personnel and supervisors have accepted all preparations, concrete pouring can begin.

[0046] Construction phase:

[0047] (1) Concrete production and transportation: Concrete is produced at the mixing plant and transported to the top platform of the toe plate by a mixer. The concrete is transported to the designated pouring location by chute 3. The end movable chute is rotated when the concrete enters the warehouse, and manual spreading is also used.

[0048] (2) Concrete vibration: Concrete should be vibrated immediately after entering the warehouse, and the vibrator should stand on the working platform of the slipform to carry out the construction. The vibrator should be inserted evenly, with a spacing of no more than 40 cm, and the insertion depth should reach 5 cm below the bottom of the newly poured concrete layer. The vibration time should be controlled between 20 and 30 seconds, and the concrete should not sink significantly, no bubbles should appear, and the slurry should begin to overflow.

[0049] (3) Lifting of the slipform: Before lifting the slipform, clear the overfilled concrete at the front of the formwork to reduce the resistance to sliding. During the sliding process, the lifting of both ends should be smooth, uniform and synchronous to prevent the cast panels from being damaged. After each layer of concrete is poured, the sliding should be performed once, and the sliding distance should not exceed the pouring width of the concrete. The slipform must be pulled once within 30 minutes to prevent the sliding plate of the slipform from bonding with the concrete surface. Strictly control the sliding speed. If the sliding speed is too fast, the slipform may be lifted, the vibration may not be dense, and the concrete surface may be wavy, which will bring difficulties to the finishing. If the sliding speed is too slow, the formwork may stick and the concrete may crack.

[0050] (4) Concrete finishing: The concrete surface is smoothed by using the first finishing platform 11 and the second finishing platform 18. After the initial setting of the concrete, secondary smoothing and calendering are performed to ensure that the concrete surface is flat, free of cracks, fine channels, etc.

[0051] (6) Concrete maintenance: After the surface is completed, cover it with a composite geomembrane and sprinkle water to keep the concrete surface moist.

[0052] The utility model has a slipform with a flexible formwork and adjustable length, which can adapt to the situation where the flat toe plate structure on the slope has complex characteristics, realizes the pouring of toe plate concrete close to the bank slope, and realizes rapid and continuous concrete forming. The construction on the slipform is safe and reliable; it saves a lot of formwork and human resources, reduces construction costs, simplifies construction technology, and effectively speeds up construction progress and efficiency.

Claims

1. A sliding form with a flexible formwork and adjustable length, characterized in that: It comprises a sliding form device, a flexible template (7) is arranged on one side of the sliding form device, and a side mold (25) is arranged on the other side of the sliding form device; The sliding formwork device comprises a first sliding formwork (10) and a second sliding formwork (17); a flexible template (7) is arranged on one side of the first sliding formwork (10); a connecting device (16) is arranged between the first sliding formwork (10) and the second sliding formwork (17); a side formwork (25) is arranged on the other side of the second sliding formwork (17); and a working platform and a plastering platform are arranged on both the first sliding formwork (10) and the second sliding formwork (17); The flexible template (7) comprises a belt (71) and a pressure roller (72); the first sliding template (10) is fixedly connected to a plurality of pressure rollers (72) at equal intervals by bolts; the belt (71) is tightly wound around the outer sides of the plurality of pressure rollers (72).

2. The sliding form with a flexible formwork and adjustable length according to claim 1, characterized in that: The first sliding form (10) and the second sliding form (17) are both rectangular frame structures, which are made of 32b national standard I-beams and channel steels welded together. The internal reinforcement of the rectangular frame structure is made of (10) channel steel. The second sliding form (17) is designed and manufactured according to the actual toe plate width.

3. The sliding form with a flexible formwork and adjustable length according to claim 1, characterized in that: The plastering platform comprises a first plastering platform (11) and a second plastering platform (18), wherein the first plastering platform (11) is arranged at the rear side of the first sliding form (10), and the second plastering platform (18) is arranged at the rear side of the second sliding form (17), and the first plastering platform (11) and the second plastering platform (18) both comprise a plurality of hollow square steels and a frame platform, wherein each hollow square steel is formed by butt-welding two short hollow square steels at an angle of 148 degrees, and connecting lugs are arranged at the rear sides of the first sliding form (10) and the second sliding form (17), and the plurality of hollow square steels are connected to the lugs by bolts and welding, and a rectangular frame platform with a mesh is set on the plurality of hollow square steels.

4. The sliding form with a flexible formwork and adjustable length according to claim 3, characterized in that: The working platform comprises a first working platform (13) and a second working platform (21); the first working platform (13) is located directly above the first sliding form (10), and the second working platform (21) is located directly above the second sliding form (17); the first working platform (13) and the second working platform (21) both comprise a plurality of brackets welded from hollow square steels, the brackets being in the shape of a "door", a rectangular frame being welded above the brackets, and a steel plate being welded above the rectangular frame; chutes (3) are respectively arranged on the steel plates of the first working platform (13) and the second working platform (21).

5. The sliding form with a flexible formwork and adjustable length according to claim 4, characterized in that: A first guardrail (12) is welded to the rear edge of the first plastering platform (11), a third guardrail (19) is welded to the rear edge of the second plastering platform (18), a second guardrail (15) is welded to the rear edge of the first working platform (13), and a fourth guardrail (20) is welded to the rear edge of the second working platform (21); the first guardrail (12), the second guardrail (15), the third guardrail (19), and the fourth guardrail (20) are all formed by welding a plurality of circular steel pipes arranged vertically and horizontally to each other.

6. The sliding form with a flexible formwork and adjustable length according to claim 1, characterized in that: The connecting device (16) comprises two load-bearing steel plates, which are respectively welded to opposite end surfaces of the first sliding mold (10) and the second sliding mold (17), and the two load-bearing steel plates are provided with two rows of bolt holes opposite to each other, the two rows of bolt holes are fixedly connected by bolts, and two anti-slip bolts are installed at the bottom ends of the two load-bearing steel plates.

7. The sliding form with a flexible formwork and adjustable length according to claim 1, characterized in that: Two traction lifting eyes (24) are welded to the first sliding form (10) and the second sliding form (17), respectively, and are hung in the circular holes of the traction lifting eyes (24) through the steel wire rope (2) hook; an 8 mm thick steel plate is welded to the bottom of the first sliding form (10) and the second sliding form (17) as a slide plate, a hollow square steel slide rail (4) is arranged on the slide plate, and two lifting lifting eyes (23) are welded to the front and rear sides of the first sliding form (10) and the second sliding form (17), respectively.

8. The sliding form with a flexible formwork and adjustable length according to claim 4, characterized in that: The first working platform (13) and the second working platform (21) are respectively welded with a first safety device (9) and a second safety device (22); the first safety device (9) and the second safety device (22) have the same structure, and both include a channel steel frame chassis, a safety rope drum, a locking assembly and a turntable. Taking the first sliding mold (10) as an example, the channel steel frame chassis is fixedly arranged on the first sliding mold (10), the safety rope drum is fixedly arranged on the channel steel frame chassis, the turntable is arranged on the safety rope drum, and the safety rope drawn from the safety rope drum is provided with a locking assembly at the end of the safety rope drum.

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