Construction device for cast-in-place concrete variable cross-section continuous box girder

Abstract

The utility model provides a construction device for a cast-in-place concrete variable cross-section continuous box girder, which relates to the technical field of concrete construction equipment and comprises a main frame body, a middle vibrating piece and side auxiliary fixing pieces, the middle of the main frame body is connected with the middle vibrating piece in a sliding manner, and the side auxiliary fixing pieces are arranged on two sides of the middle vibrating piece. A vibration motor is fixedly arranged at the top of the middle vibration piece, first connecting sliding columns are fixedly arranged on the two sides of the top of the middle vibration piece, and first supporting springs are fixed to the upper ends of the first connecting sliding columns. The middle vibration piece vibrates concrete on the inner side of the formwork from the outer side of the formwork, external vibration is matched with the insertion type vibrator, the vibration efficiency of the concrete around the formwork is improved, and the problems that a vibrator is difficult to go deep into the periphery of the formwork, in order to reduce air around the formwork, the needed vibration time is longer, and the construction time is prolonged are solved.

Description

Technical Field

[0001] This utility model relates to the field of concrete construction equipment technology, and in particular to a construction device for cast-in-place concrete variable cross-section continuous box girder. Background Technology

[0002] Cast-in-place concrete variable cross-section continuous box girder is the main structure of continuous bridge. The construction of cast-in-place concrete variable cross-section continuous box girder is achieved by segmented casting.

[0003] In the construction of variable cross-section continuous box girder, the variable cross-section continuous box girder structure is formed by assembling formwork, and then concrete is poured inside the formwork. During the concrete pouring process, an immersion vibrator is also needed to vibrate the concrete. Because the variable cross-section continuous box girder is a structure that is wider at the top and narrower at the bottom, and the height of the variable cross-section continuous box girder is relatively high, the depth that personnel can penetrate into the concrete from above with the immersion vibrator is also longer. In addition, the obstruction of the reinforcing steel makes it difficult for the vibrator to penetrate into the area around the formwork. In order to reduce the air around the formwork, a longer vibration time is required, which prolongs the construction time. Summary of the Invention

[0004] This disclosure relates to a construction device for cast-in-place concrete variable cross-section continuous box girder. The central vibrator is attached to the outside of the formwork, and the central vibrator vibrates the concrete inside the formwork from the outside of the formwork. The combination of external vibration and immersion vibrator improves the vibration of the concrete around the formwork, improves the vibration effect of the concrete in the variable cross-section continuous box girder with a wider top and narrower bottom, shortens the concrete vibration time, and speeds up the construction efficiency of vibration.

[0005] In a first aspect, this disclosure provides a construction device for cast-in-place concrete variable cross-section continuous box girder, specifically comprising: a main frame, a central vibrator, and side auxiliary fixing components. The central vibrator is slidably connected to the middle of the main frame, and side auxiliary fixing components are provided on both sides of the central vibrator. Side rollers are rotatably provided on both the front and rear sides of the main frame, and central connecting crossbars are fixedly provided on the upper parts of both sides of the main frame. The central part of the main frame and the first end of the central support control rod are rotatably connected.

[0006] In at least some embodiments, a vibration motor is fixedly installed on the top of the medium vibrating component, and first connecting slide columns are fixedly installed on both sides of the top of the medium vibrating component. A first supporting spring is fixed at the upper end of the first connecting slide column. The medium vibrating component is attached to the outside of the template. When the vibration motor is started, it drives the medium vibrating component to vibrate. The medium vibrating component performs vibration operation on the concrete inside the template from the outside of the template.

[0007] In at least some embodiments, the first connecting slide column and the middle connecting crossbar are axially slidably connected, the lower end of the first support spring is fixedly connected to the top of the middle connecting crossbar, the first support spring supports the first connecting slide column to move upward, and the first connecting slide column and the middle vibrator move upward away from the template.

[0008] In at least some embodiments, the lower part of the side auxiliary fixing member has a connected lower suction pipe at intervals, an inner guide plate is arranged vertically inside the side auxiliary fixing member, and an upper connecting pipe is connected to the top of the side auxiliary fixing member, which is connected to the pump through a hose.

[0009] In at least some embodiments, the side auxiliary fixing member is provided with an inner guide plate below the upper connecting pipe, and the side auxiliary fixing member is provided with an inner guide plate at the interval between the lower suction pipes, the inner guide plate guiding the airflow inside the side auxiliary fixing member.

[0010] In at least some embodiments, a second connecting slide post is fixedly provided on both sides of the side auxiliary fixing member, and the upper end of the second connecting slide post is fixedly connected to the upper end of the second support spring.

[0011] In at least some embodiments, the second connecting slide and the middle vibrator are axially slidably connected, the lower end of the second support spring is fixedly connected to the middle vibrator, and the second support spring supports the movement of the second connecting slide and the side auxiliary fixing member.

[0012] This utility model provides a construction device for cast-in-place concrete variable cross-section continuous box girder, which has the following beneficial effects:

[0013] The medium vibrator is attached to the outside of the formwork. The medium vibrator vibrates the concrete inside the formwork from the outside of the formwork. The combination of external vibration and immersion vibrator improves the vibration of the concrete around the formwork, improves the vibration effect of concrete in the variable cross-section continuous box girder structure that is wider at the top and narrower at the bottom, shortens the concrete vibration time, and speeds up the work efficiency.

[0014] The side auxiliary fixing component adheres to the template through the lower suction pipe. The side auxiliary fixing component keeps the middle vibrator and the vertical template in close contact, reducing the auxiliary support burden on the main frame and the middle vibrator. The inner guide plate guides the airflow inside the side auxiliary fixing component to ensure uniform suction force of the lower suction pipe. The spacing of the lower suction pipe also facilitates the passage of template fixing bolts or reinforcing fixing rods. The lower suction pipe and the template plane are in close contact to ensure the adsorption and fixing force between the lower suction pipe and the template. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0019] Figure 2 A schematic diagram of the main frame structure of this application is shown;

[0020] Figure 3 A schematic diagram of the lower suction tube structure of this application is shown;

[0021] Figure 4 A schematic diagram of the side auxiliary fixing structure of this application is shown;

[0022] Figure 5 A structural schematic diagram of the cross-section of the side auxiliary fastener of this application is shown;

[0023] Figure 6 A schematic diagram of the structure in the split state of this application is shown;

[0024] List of reference numerals

[0025] 1. Main frame; 101. Side rollers; 102. Central connecting crossbar; 103. Central support control rod;

[0026] 2. Medium vibrating element; 201. Vibrating motor; 202. First connecting slide; 203. First supporting spring;

[0027] 3. Side auxiliary fixing parts; 301. Lower suction pipe; 302. Inner guide plate; 303. Upper connecting pipe; 304. Pump; 305. Second connecting slide; 306. Second support spring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Example 1: Please refer to Figures 1 to 6 :

[0030] This utility model proposes a construction device for cast-in-place concrete variable cross-section continuous box girder, including: a main frame 1, a central vibrator 2, and side auxiliary fixing components 3. Side rollers 101 are rotatably installed on both the front and rear sides of the main frame 1. A central connecting crossbar 102 is fixedly installed on the upper part of both sides of the main frame 1. The middle part of the main frame 1 and the first end of the central support control rod 103 are rotatably connected. The central vibrator 2 is slidably connected to the middle part of the main frame 1. A first connecting sliding column 202 and the central connecting crossbar 102 are axially slidably connected. The lower end of a first support spring 203 is fixedly connected to the top of the central connecting crossbar 102. The first support spring 203 supports the first connecting sliding column 202 to move upwards. The first connecting sliding column 202 and the central vibrator 2 move upwards away from the formwork. When the side auxiliary fixing components 3 adhere to the formwork, the central vibrator 2 moves synchronously along the first connecting sliding column 202 to fit against the formwork. Each side is provided with a side auxiliary fixing member 3. The lower part of the side auxiliary fixing member 3 is arranged with interconnected lower suction pipes 301 at intervals. The interior of the side auxiliary fixing member 3 is provided with an inner guide plate 302 in a vertical direction. The top of the side auxiliary fixing member 3 is connected to an upper connecting pipe 303. The upper connecting pipe 303 is connected to the pump 304 through a hose. The side auxiliary fixing member 3 is provided with an inner guide plate 302 below the upper connecting pipe 303. The side auxiliary fixing member 3 is provided with an inner guide plate 302 at the interval between the lower suction pipes 301. The inner guide plate 302 guides the airflow inside the side auxiliary fixing member 3. The guided airflow connects to the three lower suction pipes 301. The suction force of the lower suction pipes 301 flows evenly to the upper connecting pipe 303. The side auxiliary fixing member 3 is fixedly provided with a second connecting slide column 305 on both sides. The upper end of the second connecting slide column 305 is fixedly connected to the upper end of the second support spring 306.

[0031] In this embodiment, a vibration motor 201 is fixedly installed on the top of the middle vibrating component 2, and a first connecting slide column 202 is fixedly installed on both sides of the top of the middle vibrating component 2. A first supporting spring 203 is fixed at the upper end of the first connecting slide column 202. The middle vibrating component 2 is attached to the outside of the template. When the vibration motor 201 is started, it drives the middle vibrating component 2 to vibrate. The middle vibrating component 2 performs vibration operation on the concrete inside the template from the outside of the template. The external vibration of the middle vibrating component 2 and the cooperation of the immersion vibrator improve the vibration efficiency of the concrete around the template.

[0032] In this embodiment, the second connecting slide column 305 and the middle vibrator 2 are axially slidably connected, the lower end of the second support spring 306 is fixedly connected to the middle vibrator 2, and the second support spring 306 supports the second connecting slide column 305 and the side auxiliary fixing member 3 to move and adjust their positions, so that the side auxiliary fixing member 3 can bypass the reinforcing rod and other components outside the template.

[0033] In Example 2, based on Example 1, the side rollers 101 are equipped with motor-driven rotation. The main frame 1 is attached to the vertical template by the suction force generated by the side auxiliary fixing parts 3. The side rollers 101 drive the main frame 1 to move and adjust the position that needs to be vibrated. This reduces the need for personnel to control the center support control rod 103 of the main frame 1 by hand, reduces the physical burden on personnel, and can even eliminate the need for personnel to support the center support control rod 103. The side rollers 101 can be moved by remote control.

[0034] The working principle of this embodiment is as follows: After the variable cross-section continuous box girder formwork is assembled, concrete is poured into the formwork. After the concrete is poured, vibration is performed to remove air from the concrete. Personnel use the central support control rod 103 to manually lift the main frame 1, bringing the main frame 1 into contact with the vertical formwork. The side rollers 101 of the main frame 1 are in contact with the formwork. The ground pump 304 is started and connected to the upper connecting pipe 303 for air intake. The upper connecting pipe 303 is connected to the side auxiliary fixing component 3. The side auxiliary fixing component 3 uses the lower suction pipe 301 to adhere to the formwork. The lower suction pipe 301 adheres to the formwork and moves closer to it. At the same time, the side auxiliary fixing component 3 moves closer to the formwork. The fixing component 3 compresses the second support spring 306 through the second connecting slide column 305. The second support spring 306 synchronously presses the side auxiliary fixing component 3 and the template to achieve fit. The middle vibrator 2 fits on the outside of the template. The vibration motor 201 starts and drives the middle vibrator 2 to vibrate. The middle vibrator 2 fits on the template and vibrates. The middle vibrator 2 vibrates the concrete inside the template from the outside of the template. The external vibration of the middle vibrator 2 and the cooperation of the immersion vibrator improve the vibration of the concrete around the template, improve the vibration operation effect of the concrete of the variable cross-section continuous box girder with a wider top and narrower bottom, shorten the concrete vibration time, speed up the construction efficiency, and reduce the concrete loss caused by insufficient vibration.

[0035] The side auxiliary fixing component 3 maintains contact with the template through suction, achieving contact between the middle vibrator 2 and the vertical template. This reduces the downward pressure on the side auxiliary fixing component 3, the main frame 1, and the middle vibrator 2, and reduces the auxiliary support burden on the main frame 1 and the middle vibrator 2. When the suction of the pump 304 is sufficiently strong, the side auxiliary fixing component 3 can be directly adsorbed onto the template through the lower suction pipe 301 without the need for personnel support. The inner guide plate 302 guides the airflow inside the side auxiliary fixing component 3, ensuring airflow connectivity. Three lower suction pipes 301 ensure uniform suction force. The spacing of the lower suction pipes 301 also facilitates the passage or bypass of template fixing bolts or reinforcing fixing rods. The lower suction pipes 301 are aligned with the template plane to ensure the adsorption and fixing force between the lower suction pipes 301 and the template. By reducing the suction force of the pump 304, the main frame 1 can move along the template via the side rollers 101 to adjust the vibration position, reducing the support force on the main frame 1 during personnel movement and reducing the workload of personnel.

[0036] The following points should be noted in this article:

[0037] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0038] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0039] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A construction device for cast-in-place concrete variable cross-section continuous box girder, comprising: The main frame (1), the central vibrator (2) and the side auxiliary fixing parts (3) are characterized in that the central vibrator (2) is slidably connected in the middle of the main frame (1), the side auxiliary fixing parts (3) are provided on both sides of the central vibrator (2), the top of the central vibrator (2) is fixedly provided with a vibration motor (201), the top two sides of the central vibrator (2) are fixedly provided with a first connecting slide column (202), and the upper end of the first connecting slide column (202) is fixedly provided with a first support spring (203).

2. The construction device for cast-in-place concrete variable cross-section continuous box girder according to claim 1, characterized in that, The main frame (1) is equipped with side rollers (101) on both the front and rear sides, and the upper part of both sides of the main frame (1) is fixedly equipped with a central connecting crossbar (102). The middle part of the main frame (1) and the first end of the central support control rod (103) are rotatably connected.

3. The construction device for cast-in-place concrete variable cross-section continuous box girder according to claim 2, characterized in that, The first connecting slide bar (202) and the middle connecting crossbar (102) are axially connected through a sliding connection, and the lower end of the first support spring (203) and the top of the middle connecting crossbar (102) are fixedly connected.

4. The construction device for cast-in-place concrete variable cross-section continuous box girder according to claim 1, characterized in that, The lower part of the side auxiliary fixing member (3) is spaced apart and has a connected lower suction pipe (301). The side auxiliary fixing member (3) is vertically arranged with an inner guide plate (302). The top of the side auxiliary fixing member (3) is connected with an upper connecting pipe (303). The upper connecting pipe (303) is connected to the pump (304) through a hose.

5. The construction device for cast-in-place concrete variable cross-section continuous box girder according to claim 4, characterized in that, The side auxiliary fixing member (3) is provided with an inner guide plate (302) below the upper connecting pipe (303), and the side auxiliary fixing member (3) is provided with an inner guide plate (302) at the interval between the lower suction pipes (301).

6. The construction device for cast-in-place concrete variable cross-section continuous box girder according to claim 5, characterized in that, The side auxiliary fixing member (3) is fixedly provided with a second connecting slide (305) on both sides, and the upper end of the second connecting slide (305) and the upper end of the second support spring (306) are fixedly connected.

7. The construction device for cast-in-place concrete variable cross-section continuous box girder according to claim 6, characterized in that, The second connecting slide (305) and the middle vibrator (2) are axially slidably connected, and the lower end of the second support spring (306) is fixedly connected to the middle vibrator (2).

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