Mud leakage preventing device for locking bottom opening of creeping formwork

Abstract

The utility model provides a creeping formwork bottom opening locking anti-slurry-leakage device which comprises a plurality of fore shaft brackets, a locking rod mechanism and a fore shaft mold pressing beam, the multiple fore shaft brackets are evenly distributed on the concrete outer wall of a pouring section and detachably connected with the concrete outer wall of the pouring section through the locking rod mechanism, and the fore shaft mold pressing beam is connected with the fore shaft brackets through the locking rod mechanism. The locking opening die pressing beam is connected with a creeping formwork bottom opening, the creeping formwork bottom opening is connected with the pouring section concrete, and the creeping formwork bottom opening and the outer wall of the pouring section concrete are pressed and fixed through the locking opening bracket through the locking rod mechanism. And the side, facing the pouring section concrete, of the top of the locking bracket presses and fixes the locking mold pressing beam, and the bottom opening of the creeping formwork is conveniently pressed and fixed through the arranged locking rod mechanism and the locking bracket, so that the sealing degree of the bottom opening of the creeping formwork is increased, and slurry leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a leak-proof slurry device for locking the bottom opening of a climbing formwork. Background Technique

[0002] During the construction of bridge pier concrete, common construction techniques include slip form construction and climbing formwork construction. In slip form construction, only the top base form is retained, and the formwork below the base form is removed and installed on the base form for the construction of the next section. Since there is a base form in this process, the formwork to be poured is connected to the base form by bolts, and the joint surface fits tightly, effectively solving the problems of slurry leakage and offset. In climbing formwork construction, the formwork of the already poured section is detached as a whole and climbs to the next section together with the climbing frame. Since there is no base form in this process, the bottom of the formwork needs to be wrapped around the already poured section by 10 - 15 cm. How to ensure that the bottom opening of the formwork fits tightly with the already poured section and solve the problems of slurry leakage and offset is a key difficult problem.

[0003] The purpose of the utility model is to provide a leak-proof slurry device for locking the bottom opening of a climbing formwork to solve the problems mentioned in the above background technique. Content of the Utility Model

[0004] To achieve the above purpose, the utility model provides a leak-proof slurry device for locking the bottom opening of a climbing formwork, which includes a plurality of locking brackets, a locking rod mechanism, and a locking die beam. The plurality of locking brackets are evenly distributed on the outer wall of the concrete of the pouring section. The plurality of locking brackets are detachably connected to the outer wall of the concrete of the pouring section through the locking rod mechanism. The locking die beam is connected to the bottom opening of the climbing formwork. The bottom opening of the climbing formwork is connected to the concrete of the pouring section, and through the locking rod mechanism, the locking brackets tightly press and fix the outer wall of the bottom opening of the climbing formwork and the concrete of the pouring section. One side of the top of the locking bracket facing the concrete of the pouring section tightly presses and fixes the locking die beam;

[0005] The locking rod mechanism includes a pull rod, a pull rod backing plate, a nut, a straight sleeve, and an anchor bar. A locking through groove is opened on the outer wall of the concrete of the pouring section. One end of the straight sleeve is installed in the locking through groove, and the other end extends outside the concrete of the pouring section. The anchor bar extends into the straight sleeve, and one end extends into the concrete of the pouring section, and the other end is located inside the straight sleeve. One end of the pull rod is fixedly connected to the straight sleeve extending outside the outer wall of the concrete of the pouring section, and the other end passes through the locking bracket and is fixedly connected to it through a backing plate and a nut.

[0006] As a further improvement of the present utility model, the locking corbel includes a locking beam and a support leg. One end of the support leg is fixedly welded to the outer wall of one end of the locking beam. The support leg is perpendicular to the locking beam. The other end of the support leg is tightly fixed against the outer wall of the concrete of the casting section. One end of the locking beam away from the support leg is tightly fixed against the locking die beam.

[0007] As a further improvement of the present utility model, the locking beam is composed of two double-channel steel bars and a connecting plate arranged between the two double-channel steel bars. The two ends of the connecting plate are welded to the outer walls of the opposite sides of the two double-channel steel bars. Through holes for the tie rod to pass through are provided on the two double-channel steel bars. The support leg is fixedly welded to one side of the bottom end of the double-channel steel bar. A base plate is welded to the end of the support leg that is in tight contact with the concrete of the casting section. The diameter of the base plate is larger than that of the support leg and is in tight contact with the concrete of the casting section.

[0008] As a further improvement of the present utility model, stiffening rib plates are welded at the included angles between the support leg and the two double-channel steel bars. The stiffening rib plates, the support leg and the double-channel steel bars form a triangle.

[0009] As a further improvement of the present utility model, the bottom opening of the climbing formwork includes a climbing formwork panel and a plurality of backing purlins. The climbing formwork panel is fixedly connected to the outer wall of the top end of the casting section. The plurality of backing purlins are evenly distributed on the climbing formwork panel. The locking die beam is horizontally and fixedly installed on the surfaces of the plurality of backing purlins.

[0010] As a further improvement of the present utility model, a layer of adhesive is provided on the bottom side of the climbing formwork panel facing the outer wall of the concrete of the casting section. It is adhesively fixed to the outer wall of the concrete of the casting section through the adhesive. The locking die beam is arranged near the bottom end of the backing purlin.

[0011] As a further improvement of the present utility model, a threaded wall is provided inside the straight sleeve. A spiral external thread matching the threaded wall is provided on the outer wall of the anchor bar. The anchor bar is screwed into the inside of the straight sleeve through the spiral external thread until one end extends out of the straight sleeve and is screwed and fixed to the inner wall of the concrete of the casting section. One end of the tie rod is screwed into the straight sleeve and fits with the anchor bar. The tie rod is fixedly welded to the end of the straight sleeve.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] The utility model is provided with a locking bar mechanism. During embedding, the surface of the straight sleeve is wrapped with tape to reduce the friction between the straight sleeve and the concrete, facilitating subsequent removal. One end of the anchor bar is buried inside the concrete, and the other end is threadedly connected to one end of the straight sleeve inside the concrete, facilitating the subsequent removal of the straight sleeve and the pull rod. Moreover, after the pull rod and the straight sleeve are removed, the anchor bar does not expose the concrete surface. The locking bar mechanism can serve as the climbing form top opening pull rod for the concrete of the pouring section. The locking bar mechanism presses the locking mouth bracket against the outer wall of the concrete of the pouring section. At the same time, the locking mouth bracket presses and fixes the climbing form bottom opening connected to the locking mouth pressing beam. There is an adhesive between the climbing form bottom opening and the outer wall of the concrete of the pouring section. Under the action of the locking bar mechanism and the locking mouth bracket, the climbing form bottom opening can be further compacted and adhered, thereby improving the stability of the fixation of the climbing form bottom opening. Further, when the locking bar mechanism facilitates pressing the locking mouth bracket against the climbing form bottom opening, it is also beneficial for removing the locking mouth bracket after the subsequent pouring project is completed. The entire mechanism is simple to operate, and the staff can complete the operation faster, reducing unnecessary operation steps, thereby saving time and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic side structure view of the utility model;

[0015] Figure 2 is a front view of the utility model;

[0016] Figure 3 is a side view of the locking mouth bracket of the utility model;

[0017] Figure 4 is a front view of the locking mouth bracket of the utility model;

[0018] Figure 5 is a schematic connection structure view of the locking bar mechanism and the concrete of the pouring section of the utility model;

[0019] Figure 6 is a schematic connection view of the anchor bar and the concrete of the pouring section after the locking bar mechanism of the utility model is removed.

[0020] In the figure: 1. Locking mouth bracket; 101. Support leg; 102. Stiffening rib plate; 103. Connection plate; 104. Locking mouth pressing beam;

[0021] 2. Locking bar mechanism; 201. Straight sleeve; 202. Base plate; 203. Nut; 204. Pull rod; 3. Locking mouth pressing beam; 4. Climbing form template; 5. Back purlin; 6. Adhesive; 7. Anchor bar; 8. Base plate; 9. Concrete of the pouring section. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] The following further describes the present utility model in detail with reference to the drawings.

[0026] Embodiment 1:

[0027] Please refer to Figure 1-6 , the present utility model provides a device for preventing slurry leakage by locking the bottom opening of a climbing formwork, which includes a plurality of locking brackets 1, a locking rod mechanism 2, and a locking die beam 3. The plurality of locking brackets 1 are evenly distributed on the outer wall of the concrete 9 in the pouring section. The plurality of locking brackets 1 are detachably connected to the outer wall of the concrete 9 in the pouring section through the locking rod mechanism 2. The locking die beam 3 is connected to the bottom opening of the climbing formwork. The bottom opening of the climbing formwork is connected to the concrete 9 in the pouring section, and the locking rod mechanism 2 is used to tightly fix the locking brackets 1 to the outer walls of the bottom opening of the climbing formwork and the concrete 9 in the pouring section. The side of the top of the locking bracket 1 facing the concrete 9 in the pouring section tightly fixes the locking die beam 3;

[0028] The lock bar mechanism 2 includes a pull rod 204, a pull rod 204 backing plate 202, a nut 203, a straight sleeve 201, and an anchor bar 7. A lock port through groove is provided on the outer wall of the concrete 9 of the pouring section. One end of the straight sleeve 201 is installed in the lock port through groove, and the other end extends outside the concrete 9 of the pouring section. The anchor bar 7 extends into the straight sleeve 201, with one end extending into the concrete 9 of the pouring section and the other end located inside the straight sleeve 201. One end of the pull rod 204 is fixedly connected to the straight sleeve 201 extending outside the outer wall of the concrete 9 of the pouring section, and the other end passes through the lock port corbel 1 and is fixedly connected thereto through the backing plate 202 and the nut 203.

[0029] The lock port corbel 1 includes a lock port compression beam 104 and a support leg 101. One end of the support leg 101 is fixedly welded to the outer wall of one end of the lock port compression beam 104. The support leg 101 and the lock port compression beam 104 are perpendicular to each other. The other end of the support leg 101 is tightly fixed against the outer wall of the concrete 9 of the pouring section. The end of the lock port compression beam 104 away from the support leg 101 is tightly fixed against the lock port pressing die beam 3.

[0030] The climbing form bottom opening includes a climbing form template 4 and a plurality of backing ribs 5. The climbing form template 4 is fixedly connected to the outer wall at the top of the pouring section. The plurality of backing ribs 5 are evenly distributed on the climbing form template 4. The lock port pressing die beam 3 is horizontally and fixedly installed on the surfaces of the plurality of backing ribs 5.

[0031] The inner part of the straight sleeve 201 is provided with a threaded wall, and the outer wall of the anchor bar 7 is provided with a spiral external thread matching the threaded wall. The anchor bar 7 is screwed into the inner part of the straight sleeve 201 through the spiral external thread until one end extends out of the straight sleeve 201 and is screwed and fixed with the inner wall of the concrete 9 of the pouring section. One end of the pull rod 204 is screwed into the straight sleeve 201 and fits with the anchor bar 7. The pull rod 204 is fixedly welded to the end of the straight sleeve 201. Fixing the end of the pull rod 204 and the straight sleeve 201 by welding facilitates the subsequent disassembly of the two from the inside of the concrete.

[0032] During use, the straight sleeve 201 in the lock rod mechanism 2 is pre-embedded before the casting section concrete 9 is cast. The pre-embedding height is about 15 cm from the top surface of the concrete, and about 5 cm lower than the bottom opening of the climbing formwork. During pre-embedding, the surface of the straight sleeve 201 is wrapped with tape to reduce the friction between the straight sleeve 201 and the concrete, facilitating later removal. One end of the anchor bar 7 is buried inside the concrete, and the other end is threadedly connected to one end of the straight sleeve 201 inside the concrete, facilitating the later removal of the straight sleeve 201 and the tie rod 204, and ensuring that the anchor bar 7 does not expose the concrete surface after the tie rod 204 and the straight sleeve 201 are removed. The lock rod mechanism 2 can be used as the climbing formwork top opening tie rod 204 for the casting section concrete 9. After the casting section concrete 9 is cast, the tie rod 204 and the straight sleeve 201 are removed, and the lock port through groove is not blocked temporarily. The lock port pressing beam 3 is located at the bottom opening of the climbing formwork and is horizontally arranged outside the back purlin 5. The lock port bracket 1 is installed according to the designed spacing. The lock port pressing beam 104 and the support leg 101 of the lock port bracket 1 are respectively pressed on the lock port pressing beam 3 and the outer wall of the casting section concrete 9. The tie rod 204 and the straight sleeve 201 are passed through the through hole on the lock port pressing beam 104 and re-screwed into the lock port through groove to connect with the anchor bar 7. The tie rod 204 passes through the lock port pressing beam 104 of the lock catch bracket. The tie rod 204 backing plate 202 is installed, and the nut 203 is tightened to form pressure on the bottom opening of the climbing formwork, ensuring that the bottom opening fits tightly with the concrete surface, playing a role in preventing slurry leakage and offset. After the section concrete is cast, the nut 203 is unscrewed, the lock port bracket 1 is removed, the tie rod 204 and the straight sleeve 201 are unscrewed, and the lock port through groove is sealed with mortar of the same strength.

[0033] Embodiment 2:

[0034] Please refer to Figure 2-4 , the lock port pressing beam 104 is composed of two double-channel steels and a connecting plate 103 arranged between the two double-channel steels. The two ends of the connecting plate 103 are welded to the outer walls of the opposite sides of the two double-channel steels. Through holes for the tie rod 204 to pass through are provided on the two double-channel steels. The support leg 101 is fixedly welded to one side of the bottom end of the double-channel steel. A base plate 8 is welded to the end of the support leg 101 that abuts against the casting section concrete 9. The diameter of the base plate 8 is larger than the diameter of the support leg 101 and abuts against the casting section concrete 9.

[0035] Stiffening rib plates 102 are welded at the angles between the support leg 101 and the two double-channel steels. The stiffening rib plates 102, the support leg 101, and the double-channel steel form a triangle.

[0036] One layer of adhesive 6 is provided on the bottom of the climbing formwork form 4 facing the outer wall of the casting section concrete 9, and it is adhesively fixed to the outer wall of the casting section concrete 9 through the adhesive 6. The lock port pressing beam 3 is arranged near the bottom end of the back purlin 5.

[0037] In this embodiment, two stiffening rib plates 102 are provided at the included angle between the support leg 101 and the double-channel steel. The stiffening rib plates 102 and the support leg 101 and the double-channel steel form a triangle, thereby increasing the overall stiffness of the locking corbel 1. A base plate 8 is welded to the end of the support leg 101 to increase the contact area with the concrete surface and avoid damaging the concrete surface. A layer of adhesive 6 is applied to the side of the climbing formwork 4 facing the concrete 9 in the pouring section. The locking press beam 3 is located at the bottom opening of the climbing formwork and is horizontally arranged outside the vertical purlins of the formwork. Before installation, the adhesive 6 needs to be pasted around the bottom opening of the climbing formwork to increase the sealing performance with the outer wall of the concrete, thereby playing a role in preventing slurry leakage.

[0038] The above exemplary description of the present invention is made in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A device for locking and preventing slurry leakage at the bottom of a climbing formwork, characterized in that: It comprises a plurality of locking brackets (1), a locking rod mechanism (2), and a locking die beam (3), wherein the plurality of locking brackets (1) are evenly distributed on the outer wall of the casting section concrete (9), the plurality of locking brackets (1) are detachably connected to the outer wall of the casting section concrete (9) through the locking rod mechanism (2), the locking die beam (3) is connected to a climbing form bottom, the climbing form bottom is connected to the casting section concrete (9), and the locking rod mechanism (2) enables the locking bracket (1) to press and fix the climbing form bottom and the outer wall of the casting section concrete (9), and the top of the locking bracket (1) faces the side of the casting section concrete (9) to press and fix the locking die beam (3); The locking rod mechanism (2) comprises a pull rod (204), a pull rod (204) pad (202), a nut (203), a straight sleeve (201), and an anchor bar (7). A locking groove is provided on the outer wall of the casting section concrete (9). One end of the straight sleeve (201) is installed in the locking groove, and the other end extends out of the casting section concrete (9). The anchor bar (7) extends into the straight sleeve (201), and one end extends to the casting section concrete (9), and the other end is located in the straight sleeve (201). One end of the pull rod (204) is connected and fixed to the straight sleeve (201) extending out of the outer wall of the casting section concrete (9), and the other end passes through the locking bracket (1) and is connected and fixed thereto through the pad (202) and the nut (203).

2. The device for locking and preventing slurry leakage at the bottom of a climbing formwork according to claim 1, characterized in that: The locking bracket (1) comprises a locking pressure beam (104) and a supporting leg (101); one end of the supporting leg (101) is welded and fixed to the outer wall of one end of the locking pressure beam (104); the supporting leg (101) and the locking pressure beam (104) are perpendicular to each other; the other end of the supporting leg (101) is tightly fixed to the outer wall of the casting section concrete (9); and one end of the locking pressure beam (104) away from the supporting leg (101) is tightly fixed to the locking die-casting beam (3).

3. The device for locking and preventing slurry leakage at the bottom of a climbing formwork according to claim 2, characterized in that: The locking pressure beam (104) is composed of two double-jointed channel steels and a connecting plate (103) arranged between the two double-jointed channel steels. The two ends of the connecting plate (103) are welded to the outer wall of the opposite side of the two double-jointed channel steels. The two double-jointed channel steels are provided with through holes for the pull rod (204) to pass through. The support leg (101) is welded and fixed to one side of the bottom end of the double-jointed channel steel. A base plate (8) is welded to the end of the support leg (101) that is tightly against the casting section concrete (9). The diameter of the base plate (8) is larger than the diameter of the support leg (101) and is tightly against the casting section concrete (9).

4. The device for locking and preventing slurry leakage at the bottom of a climbing formwork according to claim 3 is characterized in that: A stiffening rib plate (102) is welded at the angle between the support leg (101) and the two double-jointed channel steels, and the stiffening rib plate (102), the support leg (101) and the double-jointed channel steel form a triangle.

5. The device for locking and preventing slurry leakage at the bottom of a climbing formwork according to claim 1, characterized in that: The bottom of the climbing formwork comprises a climbing formwork template (4) and a plurality of back purlins (5); the climbing formwork template (4) is fixedly connected to the outer wall at the top end of the casting section; the plurality of back purlins (5) are evenly distributed on the climbing formwork template (4); and the locking die beam (3) is transversely fixedly mounted on the surface of the plurality of back purlins (5).

6. The device for locking and preventing slurry leakage at the bottom of a climbing formwork according to claim 5, characterized in that: A layer of adhesive (6) is provided at the bottom of the climbing formwork (4) facing the outer wall of the casting section concrete (9), and is bonded and fixed to the outer wall of the casting section concrete (9) by the adhesive (6). The locking die beam (3) is arranged near the bottom end of the back purlin (5).

7. The device for locking and preventing slurry leakage at the bottom of a climbing formwork according to claim 1, characterized in that: The straight sleeve (201) is provided with a threaded wall inside, and the outer wall of the anchor bar (7) is provided with a spiral external thread matching the threaded wall. The anchor bar (7) is screwed into the straight sleeve (201) through the spiral external thread until one end extends out of the straight sleeve (201) and is screwed and fixed to the inner wall of the casting section concrete (9). One end of the pull rod (204) is screwed into the straight sleeve (201) and fits with the anchor bar (7). The pull rod (204) is welded and fixed to the end of the straight sleeve (201).

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