A movable cast-in-place box beam formwork

Abstract

The utility model relates to the technical field of bridge construction, specifically a movable cast-in-place box beam formwork, comprising a base, a bottom formwork is arranged on the base, a group of side formworks are respectively arranged on both sides of the bottom formwork, an inner formwork is arranged between the two groups of side formworks, a group of brackets are respectively arranged on both sides of the base, a top plate abutting against the side formworks is arranged on one side of the bracket, a mounting frame is arranged at the bottom of the bracket, rollers are arranged on both sides of the mounting frame, sub-holes are arranged at intervals on both sides of the inner formwork, mother holes aligned with the sub-holes are arranged on the side formworks, tension screws are passed between each group of sub-holes and mother holes, and a limiting mechanism is arranged on the inner formwork. In this device, when the box beam is cast and formed, the staff takes out the sleeve on the insertion rod. In this device, when the box beam is cast and formed, the staff adjusts the tension screws to cancel the connection between the inner formwork and the side formworks, thereby driving the side formworks to move, which is convenient for continuous casting operations and improves construction efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of bridge construction, and in particular to a movable cast-in-place box girder formwork. Background Art

[0002] Box girder is a commonly used bridge structure, usually formed by pouring concrete in a box girder formwork. Its main feature is that the cross-section of the beam is rectangular or approximately rectangular, with flanges on both sides of the upper part.

[0003] A Chinese utility model patent with publication number CN221021548U discloses a hydraulic box girder steel formwork structure, including a base, support plates are fixedly connected to both sides of the top of the base, push plates are provided on the sides where the two support plates are close to each other, a plurality of first hydraulic cylinders are fixedly installed between the support plates and the push plates, the push plates are slidably arranged on the base, side formwork frames are slidably provided on the sides where the two push plates are close to each other, mounting plates are provided above the two side formwork frames, both ends of the mounting plates are screwed to the support plates, a second hydraulic cylinder is fixedly installed in the middle of the bottom end of the mounting plate, the output end of the second hydraulic cylinder is fixedly connected to the lifting plate, the bottom of the lifting plate is fixedly connected to the inner formwork frame through a connecting plate, the inner formwork frame is arranged between the two side formwork frames, it can realize the adjustment of the spacing between the side formwork frames, meet the manufacturing requirements of different box girder sizes, improve the accuracy of the box girder structure, and at the same time facilitate the control of the wall thickness of the box girder and improve the convenience of construction operation.

[0004] The device is provided with a base, and support plates are fixedly connected to both sides of the top of the base, and a push plate is provided on one side of the support plate. When the box beam is cast, the staff starts the first hydraulic cylinder and the second hydraulic cylinder to adjust the position of the side formwork on the two push plates and the position of the inner formwork. However, the support plates on the base are fixed. After a group of box beams are cast and formed, the staff needs to move the box beams out of the base before they can carry out subsequent casting operations, and the construction efficiency is not high. Utility Model Content

[0005] Aiming at the problem of low construction efficiency in the prior art, the utility model provides a movable cast-in-place box beam formwork.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] The utility model provides a movable cast-in-place box beam formwork, comprising a base, a bottom formwork is arranged on the base, a group of side formworks are arranged on both sides of the bottom formwork, an inner formwork is arranged between the two groups of side formworks, a group of brackets are arranged on both sides of the base, a top plate abutting against the side formworks is arranged on one side of the bracket, a mounting frame is arranged at the bottom of the bracket, rollers are arranged on both sides of the mounting frame, guide rails matched with the rollers are arranged on the base, sub-holes are arranged at intervals on both sides of the inner formwork, and mother holes aligned with the sub-holes are arranged on the side formwork, and a tension screw is passed between each group of sub-holes and the mother hole;

[0008] It also includes a limiting mechanism, which is arranged on the inner template.

[0009] Preferably, the limiting mechanism includes a fixing frame, a hydraulic cylinder three and a support plate, the fixing frame is fixedly arranged on the inner template, the hydraulic cylinder three is fixedly arranged on the fixing frame, the output shaft of the hydraulic cylinder three is fixedly arranged with the support plate, the bottom of the inner template is provided with a countersunk hole, and the support plate is embedded in the countersunk hole. When placing the inner template, the staff starts the hydraulic cylinder three on the inner template, so that the output shaft of the hydraulic cylinder three drives the support plate to descend, and when it descends to a suitable position, the staff can place the inner template on the bottom template, at this time, the support plate abuts against the bottom template to realize the limitation of the inner template, and after the inner template is limited by the insertion rod and the side template, the support plate can be recovered into the countersunk hole of the inner template, which is convenient for subsequent pouring operations.

[0010] Preferably, a fixing rod is fixedly provided on the side of the bracket away from the top plate, and the top of the fixing rod is detachably connected to the top plate. A group of hydraulic cylinders are respectively provided at the base below the fixing rod and the top plate, and the output shafts of the two groups of hydraulic cylinders are respectively abutted against the fixing rod and the bottom of the top plate, and threaded holes are provided on the fixing rod and the top plate, and the two groups of threaded holes are respectively threadedly connected to one end of the connecting rod. The staff can disassemble the fixing rod from the top plate by turning the connecting rod, and the height of the bracket and the top plate can be adjusted by starting the hydraulic cylinder, thereby realizing the adjustment of the abutment state of the top plate and the side template, and the operation is convenient.

[0011] Preferably, the mounting frame is provided with a slot, the bracket is embedded in the slot, a group of fixing bars are fixedly provided at both ends of the bottom of the bracket, and a group of hydraulic cylinders are provided on both sides of the mounting frame, and the output shafts of the two groups of hydraulic cylinders are respectively abutted against a group of fixing bars. The staff can start the two groups of hydraulic cylinders on the mounting frame to achieve the abutment of the fixing bars at the bottom of the bracket, thereby limiting the position between the mounting frame and the bracket, which is convenient for subsequent loading and unloading of the bracket on the mounting frame.

[0012] Preferably, a sealing gasket is provided at one end of the side formwork close to the bottom formwork, and the sealing gasket is provided to avoid concrete leakage during concrete pouring operations, thereby ensuring the pouring quality.

[0013] Preferably, an operating table is provided on the outer side of the side formwork, and a climbing frame connected to the operating table is provided on the base, so that the operating table and the climbing frame are provided to facilitate workers to move to the top position of the side formwork for pouring to assist the operation.

[0014] Preferably, ventilation holes are provided on the side formwork, ventilation pipes are inserted into the ventilation holes, and one end of the ventilation pipe away from the side formwork abuts against the inner formwork. Ventilation after concrete pouring and molding is facilitated by providing ventilation holes and ventilation pipes.

[0015] The advantages of adopting the above technical solution are:

[0016] The utility model is provided with a base, a bottom template is provided on the base, a group of side templates are respectively provided on both sides of the bottom template, an inner template is provided between the two groups of side templates, a group of brackets are respectively provided on both sides of the base, a top plate abutting against the side templates is provided on one side of the bracket, a mounting frame is provided at the bottom of the bracket, rollers are provided on both sides of the mounting frame, guide rails matched with the rollers are provided on the base, sub-holes are provided at intervals on both sides of the inner template, mother holes aligned with the sub-holes are provided on the side template, tension screws are passed between each group of sub-holes and mother holes, and a limiting mechanism is provided on the inner template. In this device, when the box girder is cast and formed, the staff adjusts the tension screws to cancel the connection between the inner template and the side template, and then the mounting frame and the bracket can be driven to move by the rollers, and then the side template can be driven to move, which is convenient for continuous casting operations and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The structure diagram of the utility model is shown;

[0019] Figure 2 A cross-sectional view of the utility model along the AA direction is shown;

[0020] Figure 3 A partial enlarged view of the utility model at A is shown;

[0021] Figure 4 A partial enlarged view of B of the utility model is shown.

[0022] Among them: base 1, guide rail 101, bottom template 2, side template 3, sealing gasket 301, ventilation hole 302, inner template 4, tension screw 410, ventilation pipe 401, hydraulic cylinder three 403, support plate 404, bracket 5, top plate 501, fixing rod 502, fixing bar 503, mounting frame 6, roller 601, hydraulic cylinder two 602, hydraulic cylinder one 7, operating table 8, climbing frame 9. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] like Figure 1-4 As shown, an embodiment of the utility model discloses a movable cast-in-place box girder formwork, including a base 1 and a limiting mechanism, a bottom formwork 2 is arranged on the base 1, a group of side formworks 3 are respectively arranged on both sides of the bottom formwork 2, an inner formwork 4 is arranged between the two groups of side formworks 3, a group of brackets 5 are respectively arranged on both sides of the base 1, a top plate 501 abutting against the side formwork 3 is arranged on one side of the bracket 5, a mounting frame 6 is arranged at the bottom of the bracket 5, rollers 601 are arranged on both sides of the mounting frame 6, a guide rail 101 matched with the roller 601 is arranged on the base 1, sub-holes are arranged at intervals on both sides of the inner formwork 4, a mother hole aligned with the sub-holes is arranged on the side formwork 3, a tension screw 410 is passed between each group of sub-holes and the mother hole, and the limiting mechanism is arranged on the inner formwork 4.

[0025] In at least one embodiment, the limiting mechanism includes a fixed frame, a hydraulic cylinder three 403 and a support plate 404. The fixed frame is fixedly arranged on the inner template 4, the hydraulic cylinder three 403 is fixedly arranged on the fixed frame, the output shaft of the hydraulic cylinder three 403 is fixedly arranged with the support plate 404, the bottom of the inner template 4 is provided with a countersunk hole, and the support plate 404 is embedded in the countersunk hole. When placing the inner template 4, the staff starts the hydraulic cylinder three 403 on the inner template 4, so that the output shaft of the hydraulic cylinder three 403 drives the support plate 404 to descend. After it descends to a suitable position, the staff can place the inner template 4 on the bottom template 2. At this time, the support plate 404 abuts against the bottom template 2 to achieve the limitation of the inner template 4. After the inner template 4 is limited by the insertion rod and the side template 3, the support plate 404 can be recovered to the countersunk hole of the inner template 4 to facilitate subsequent pouring operations.

[0026] In at least one embodiment, a fixing rod 502 is fixedly provided on one side of the bracket 5 away from the top plate 501, and the top of the fixing rod 502 is detachably connected to the top plate 501. A group of hydraulic cylinders 7 are respectively provided on the base 1 below the fixing rod 502 and the top plate 501, and the output shafts of the two groups of hydraulic cylinders 7 are respectively abutted against the bottom of the fixing rod 502 and the top plate 501, and threaded holes are provided on the fixing rod 502 and the top plate 501, and the two groups of threaded holes are respectively threadedly connected to one end of the connecting rod. The staff can disassemble the fixing rod 502 and the top plate 501 by rotating the connecting rod, and the height of the bracket 5 and the top plate 501 can be adjusted by starting the hydraulic cylinder 7, so as to realize the adjustment of the abutment state of the top plate 501 and the side template 3, and the operation is convenient.

[0027] In at least one embodiment, a slot is provided on the mounting frame 6, and the bracket 5 is embedded in the slot. A group of fixing bars 503 are fixedly provided at both ends of the bottom of the bracket 5, and a group of hydraulic cylinders 602 are provided on both sides of the mounting frame 6. The output shafts of the two groups of hydraulic cylinders 602 are respectively abutted against a group of fixing bars 503. The staff can start the two groups of hydraulic cylinders 602 on the mounting frame 6 to achieve the abutment of the fixing bars 503 at the bottom of the bracket 5, thereby limiting the mounting frame 6 and the bracket 5, which is convenient for the subsequent loading and unloading of the bracket 5 on the mounting frame 6.

[0028] In at least one embodiment, a sealing gasket 301 is provided at one end of the side formwork 3 close to the bottom formwork 2. The sealing gasket 301 is provided to avoid concrete leakage during concrete pouring operations, thereby ensuring the pouring quality.

[0029] In at least one embodiment, an operating platform 8 is provided on the outer side of the side formwork 3, and a climbing frame 9 connected to the operating platform 8 is provided on the base 1. The operating platform 8 and the climbing frame 9 facilitate the workers to move to the top position of the side formwork 3 for pouring to assist the operation.

[0030] In at least one embodiment, a ventilation hole 302 is provided on the side formwork 3, a ventilation pipe 401 is inserted into the ventilation hole 302, and the end of the ventilation pipe 401 away from the side formwork 3 is abutted against the inner formwork 4. The ventilation holes 302 and the ventilation pipe 401 are provided to facilitate ventilation after concrete pouring.

[0031] When pouring the box beam, the worker places the bottom formwork 2 at the location to be poured, and then places the inner formwork 4 on the bottom formwork 2. During the placement process, the spacing between the inner formwork 4 and the bottom formwork 2 is adjusted and controlled by the limiting mechanism on the inner formwork 4 according to the box beam specifications. Then, the two sides of the bottom formwork 2 are respectively connected and fixed to a group of side formworks 3 by bolts. When the side formworks 3 are connected to the bottom formwork 2, multiple groups of tension screws 410 are respectively inserted into the sub-holes on the inner formwork 4 and the mother holes on the side formwork 3 to achieve the connection limit of the inner formwork 4 and the side formwork 3, and the inner formwork 4 and the side formwork are adjusted. 3, to ensure the accuracy of pouring. After the template assembly is completed, the top plates 501 on the brackets 5 on both sides of the base 1 are used to abut the side templates 3 to further ensure the stability of the template group during pouring. After the concrete in the template group is cast, the staff cancels the connection limit between the bottom template 2 and the side template 3 by the tension screw 410, and then moves along the track on the base 1 through the roller 601, driving the mounting frame 6 and the bracket 5 to move, and driving the side template 3 to move synchronously through the top plate 501 on the bracket 5, so as to move to the next box girder casting location. The operation is convenient and the construction efficiency is improved.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A movable cast-in-place box beam formwork, characterized in that: include A base, a bottom template is arranged on the base, a group of side templates are arranged on both sides of the bottom template, an inner template is arranged between the two groups of side templates, a group of brackets are arranged on both sides of the base, a top plate abutting against the side templates is arranged on one side of the bracket, a mounting frame is arranged at the bottom of the bracket, rollers are arranged on both sides of the mounting frame, a guide rail matched with the rollers is arranged on the base, sub-holes are arranged at intervals on both sides of the inner template, and a mother hole aligned with the sub-holes is arranged on the side template, and a tension screw is passed between each group of sub-holes and mother holes; It also includes a limiting mechanism, which is arranged on the inner template.

2. The movable cast-in-place box beam formwork according to claim 1, characterized in that: The limiting mechanism includes a fixing frame, a hydraulic cylinder three and a support plate. The fixing frame is fixedly arranged on the inner template, the hydraulic cylinder three is fixedly arranged on the fixing frame, the output shaft of the hydraulic cylinder three is fixedly arranged with the support plate, a countersunk hole is arranged at the bottom of the inner template, and the support plate is embedded in the countersunk hole.

3. The movable cast-in-place box beam formwork according to claim 1, characterized in that: A fixing rod is fixedly arranged on one side of the bracket away from the top plate, and the top of the fixing rod is detachably connected to the top plate. A group of hydraulic cylinders are respectively arranged on the base below the fixing rod and the top plate, and the output shafts of the two groups of hydraulic cylinders are respectively in contact with the fixing rod and the bottom of the top plate.

4. The movable cast-in-place box beam formwork according to claim 1, characterized in that: The mounting frame is provided with a slot, the bracket is embedded in the slot, a group of fixing bars are fixedly provided at both ends of the bottom of the bracket, a group of hydraulic cylinders 2 are provided on both sides of the mounting frame, and the output shafts of the two groups of hydraulic cylinders 2 are respectively abutted against a group of fixing bars.

5. The movable cast-in-place box beam formwork according to claim 1, characterized in that: A sealing gasket is arranged at one end of the side template close to the bottom template.

6. The movable cast-in-place box beam formwork according to claim 1, characterized in that: An operating platform is arranged on the outer side of the side formwork, and a climbing frame connected with the operating platform is arranged on the base.

7. The movable cast-in-place box beam formwork according to claim 1, characterized in that: The side template is provided with a ventilation hole, a ventilation pipe is inserted into the ventilation hole, and one end of the ventilation pipe away from the side template is in contact with the inner template.

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