Concrete box girder bottom plate vibrating device

Abstract

The utility model discloses a concrete box girder bottom plate vibrating device. Comprising travelling cranes which are arranged on the two sides of a mold used for producing the concrete box girder and can walk transversely, a vibrating unit which is arranged in an inner mold plate of the mold and used for vibrating a bottom plate of the box girder, and a driving unit which is arranged between the two travelling cranes and used for driving the vibrating unit to move longitudinally. And the vibrating unit comprises a connecting body, a guide frame, a second electric cylinder and a vibrating rod. Under the driving of the travelling crane and the driving unit, the vibrating unit moves longitudinally and transversely in the channel, and the second electric cylinder drives the vibrating rod to move up and down, so that concrete at the bottom plate of the box girder can be vibrated. Due to the fact that an operator does not need to enter the inner formwork, safety is achieved, labor intensity is reduced, and the working environment is improved. In addition, manual vibration is replaced by mechanical vibration, the vibration efficiency can be improved, and the vibration effect can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete box girder production machinery, in particular to a vibrating device for the bottom plate of a concrete box girder. Background Technique

[0002] A concrete box girder is a common component of a concrete bridge, and its bottom is the bottom plate of the concrete box girder.

[0003] The concrete box girder is cast in a mold. The mold includes an outer mold and an inner formwork. The cavity between the outer mold and the inner formwork is in the shape of the box girder, and there is a steel cage in the cavity. When pouring concrete, due to the presence of many voids and bubbles in the concrete, these voids and bubbles will make the density and strength of the concrete unable to be guaranteed, which will affect the service life and safety of the box girder. Therefore, it is necessary to use a vibrating rod for vibration. Vibration can discharge the air in the concrete, make the cement slurry densely fill the voids of the aggregate, and improve the compaction degree and strength of the concrete.

[0004] The bottom of the inner formwork is open, and the opening position corresponds to the bottom plate of the concrete box girder. When pouring the concrete box girder, first pour the concrete into the cavity and pour the bottom plate of the concrete box girder. When pouring, it is necessary for the operator to enter the inside of the inner formwork and hold the vibrating rod to vibrate the concrete to ensure the product quality. After reaching the time specified by the concrete box girder pouring process, then pour other parts of the concrete box girder.

[0005] Since the vibrating rod is very heavy and the vibrating head needs to be moved during vibration so that the concrete in the cavity can be vibrated evenly, due to the large volume and long length of the concrete box girder, the labor intensity is very high, the working environment is extremely harsh, the vibration efficiency is very low, it is easy to be dangerous, and at the same time, the vibration effect is not easy to guarantee. Especially when mass-producing precast box girders, the production efficiency of the box girder will be greatly reduced. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a vibrating device for the bottom plate of a concrete box girder, which is used to solve the problems that at present, when pouring the bottom plate of a concrete box girder, it is necessary for the operator to enter the inside of the inner formwork and hold the vibrating rod to vibrate the concrete, with high labor intensity, harsh working environment, very low vibration efficiency, and not easy to guarantee the vibration effect.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A vibrating device for the bottom plate of a concrete box girder, comprising traveling cranes that can move horizontally and are respectively arranged on both sides of a mold for producing a concrete box girder, a vibrating unit arranged inside the inner formwork of the mold for vibrating the bottom plate of the box girder, and a driving unit arranged between the two traveling cranes for driving the longitudinal movement of the vibrating unit.

[0009] Further, the vibrating unit includes a connecting body, a guiding frame, and a vertical vibrating rod connected in sequence from top to bottom. The vibrating rod is slidably connected to the guiding frame. A second electric cylinder for driving the vibrating rod to move up and down is arranged inside the guiding frame. After the vibrating rod moves down, it is inserted into the concrete of the bottom plate of the box girder. After the vibrating rod moves up, it is withdrawn from the concrete of the bottom plate of the box girder. The connecting body is fixedly connected to the driving unit.

[0010] Further, the bottom of the connecting body is rotatably connected to the top of the guiding frame, and a first electric cylinder for driving the guiding frame to swing is arranged on the connecting body.

[0011] Further, a flexible connecting piece is arranged between the second electric cylinder and the vibrating rod, and both ends of the connecting piece are respectively fixedly connected to the second electric cylinder and the vibrating rod.

[0012] Further, the material of the connecting piece is rubber or silica gel.

[0013] Further, horizontal tracks are respectively arranged on both sides of the mold, and the traveling cranes respectively travel synchronously along the corresponding tracks.

[0014] Further, support columns are arranged on each traveling crane. The driving unit includes pulleys respectively rotatably connected to the two support columns and a longitudinal steel wire rope wound around the two pulleys. The vibrating unit is fixedly connected to the steel wire rope. A reduction motor for driving the corresponding pulley to rotate is arranged on one of the support columns.

[0015] Further, support columns are arranged on each traveling crane. The driving unit includes sprockets respectively rotatably connected to the two support columns and a longitudinal chain wound around the two sprockets. The vibrating unit is fixedly connected to the chain. A reduction motor for driving the corresponding sprocket to rotate is arranged on one of the support columns.

[0016] Further, a visual recognition camera for detecting the position of the steel bars of the bottom plate of the box girder at the bottom of the mold is arranged at the bottom of the vibrating unit.

[0017] The positive effects of the present utility model are:

[0018] 1. The utility model includes a traveling crane that can travel horizontally, a vibrating unit arranged in the channel of the inner template of the mold, and a driving unit arranged between two traveling cranes for driving the vibrating unit to move longitudinally. The vibrating unit includes a connecting body, a guiding frame, a second electric cylinder, and a vibrating rod. Driven by the traveling crane and the driving unit, the vibrating unit moves longitudinally and horizontally in the channel, and the second electric cylinder drives the vibrating rod to move up and down, so as to vibrate the concrete at the bottom plate of the box girder. Since there is no need for operators to enter the inner template, it is safer, reduces labor intensity, and improves the working environment. In addition, mechanical vibration instead of manual vibration can improve the vibration efficiency and ensure the vibration effect.

[0019] 2. The guiding frame can swing under the drive of the first electric cylinder arranged between the guiding frame and the connecting body, so that the vibrating rod is inserted into the concrete at the bottom plate of the box girder at the edge of the column and the bottom of the inner template along an inclined direction, so as to vibrate the parts near both ends and near the middle of the bottom plate of the box girder, thereby increasing the vibration range, reducing the vibration dead angle, and improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the utility model when it is working;

[0021] Figure 2 is a side view of the utility model when it is working;

[0022] Figure 3 is Figure 2 the left view of

[0023] Figure 4 is Figure 2 the top view of

[0024] Figure 5 is a perspective view of the utility model;

[0025] Figure 6 is a perspective view of the vibrating unit;

[0026] Figure 7 is a side view of the vibrating unit;

[0027] Figure 8 is a schematic diagram of the utility model when the guiding frame swings and is working;

[0028] In the figure:

[0029] 1. Outer mold; 2. Concrete box girder; 3. Inner template; 4. Support rod; 5. Track; 6. Support column; 7. Vibrating unit; 8. Column; 9. Traveling crane; 10. Steel wire rope; 11. Connecting body; 12. First electric cylinder; 13. Guiding frame; 14. Second electric cylinder; 15. Vibrating rod; 16. Bottom plate of box girder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] For the convenience of description, in the following description, the direction consistent with the track 5 is the transverse direction, and the direction consistent with the wire rope 10 is the longitudinal direction.

[0031] Embodiment 1

[0032] As Figure 1 and Figure 2 shown, the current mold for producing the concrete box girder 2 is composed of an outer mold 1 and a U-shaped inner formwork 3 with an opening at the bottom. The cavity is formed between the outer mold 1 and the inner formwork 3. Concrete is poured into the cavity and solidifies to form the concrete box girder 2. A support is provided inside the inner formwork 3 to support the inner formwork 3 and prevent it from deforming under the extrusion of the concrete. The support includes support rods 4 connected to the top and both sides of the inner formwork 3 and columns 8 at the lower part. A passage 17 is provided between the columns 8 and the support rods 4 inside the inner formwork 3, and the two passages 17 facilitate the passage of operators.

[0033] As Figures 1 to 5 shown, a vibrating device for the bottom slab of a concrete box girder includes two groups of transverse tracks 5 respectively laid on both sides of the outer mold 1. Each group of tracks 5 includes two parallel tracks 5. A traveling crane 9 is provided on each group of tracks 5, and the structure of the traveling crane 9 is the same as that of the commonly used electric flat car in the workshop, and its specific structure will not be described in detail here. The two traveling cranes 9 walk synchronously and in the same direction respectively under the drive of motors.

[0034] A vibrating unit 7 is provided in each passage 17, and a driving unit for driving the vibrating unit 7 to move longitudinally in the passage 17 is provided between the two traveling cranes 9.

[0035] Combined with Figure 6 and Figure 7 shown, each vibrating unit 7 includes a connecting body 11, a guiding frame 13 and a vertical vibrating rod 15 connected in sequence from top to bottom. The connecting body 11 is an inverted triangle, and the guiding frame 13 is a square frame. The vibrating rod 15 is vertically arranged, and the vibrating rod 15 is slidably connected through the center of the bottom of the guiding frame 13. A second electric cylinder 14 is provided inside the guiding frame 13, and the cylinder rod of the second electric cylinder 14 faces downward. The top of the cylinder body of the second electric cylinder 14 is fixedly connected to the top of the guiding frame 13, and the bottom of the push rod of the second electric cylinder 14 is connected to the vibrating rod 15 through a flexible rubber rod. After the vibrating rod 15 moves downward, it is inserted into the concrete of the bottom slab 16 of the box girder, and after the vibrating rod 15 moves upward, it is withdrawn from the concrete of the bottom slab 16 of the box girder. The connecting body 11 is fixedly connected to the driving unit.

[0036] On each side close to the outer side of the traveling crane 9, two support columns 6 are fixedly connected. The driving unit includes pulleys respectively rotatably connected to the support columns 6 and longitudinal steel wire ropes 10. There are two pulleys on each support column 6, and the steel wire ropes 10 of each driving unit are two parallel ones. The lower parts of the two steel wire ropes 10 are on the same horizontal plane. The two steel wire ropes 10 are respectively wound around the pulleys on one support column 6 and the corresponding pulleys on the other support column 6. The top of the connecting body 11 is fixedly connected to the corresponding two steel wire ropes 10 respectively. A reduction motor is provided on one support column 6 and is in transmission connection with the corresponding two pulleys. When the reduction motor rotates, it drives the two steel wire ropes 10 to move through the pulleys, and further drives the vibrating unit 7 to move longitudinally.

[0037] In addition, the steel wire ropes 10 can be replaced with chains, and the pulleys can be replaced with sprocket wheels, so that the chains are connected to the connecting body 11.

[0038] Driven by the traveling crane 9 and the driving unit, the vibrating unit 7 moves longitudinally and transversely in the channel 17. The second electric cylinder 14 drives the vibrating rod 15 to move up and down, so as to vibrate the concrete at the bottom plate 16 of the box girder. Since there is no need for operators to enter the inner formwork 3, the labor intensity is reduced and the working environment is improved. At the same time, mechanical vibration instead of manual vibration can improve the vibration efficiency and ensure the vibration effect.

[0039] Embodiment 2

[0040] Combined with Figures 6 to 7 As shown, the bottom of the connecting body 11 is rotatably connected to the top of the guiding frame 13. The two sides of the connecting body 11 are both provided with first electric cylinders 12. The push rods of the first electric cylinders 12 face downward. The upper ends of the cylinders of the two first electric cylinders 12 are respectively hinged to the two ends of the upper part of the connecting body 11, and the lower ends of the push rods of the two electric cylinders 12 are respectively hinged to the top of the guiding frame 13.

[0041] Combined with Figure 8 As shown, when one of the two first electric cylinders 12 extends and the other contracts, it can drive the guiding frame 13 to swing. When the vibrating rod 15 extends, the vibrating rod 15 can be inserted obliquely below the two corners at the bottom of the inner formwork 3 and between the two longitudinally arranged columns 8, so as to vibrate the parts of the bottom plate 16 of the box girder close to both ends and close to the middle, thereby increasing the vibration range, reducing the vibration dead angle, and improving the product quality.

[0042] Embodiment 3

[0043] The difference between this embodiment and Embodiment 2 is that:

[0044] A visual recognition camera for detecting the steel bars at the position of the bottom plate 16 of the box girder at the bottom of the mold is provided at the bottom of the guiding frame 13.

[0045] The visual recognition camera is used to collect the position and state of the real steel bar mesh holes, provide data for the control system, and can track the position of the vibrating rod 15 on the bottom slab 16 of the box girder in real time, so that the vibrating rod 15 can be accurately inserted into the steel bar cage at the bottom slab 16 of the box girder, and record the accurate data during the pouring and vibrating manufacturing process of the entire bottom slab 16 of the box girder. The data includes but is not limited to the vibration frequency, time, etc. at each position point.

[0046] The above-described embodiments are described in more detail and specifically, expressing the preferred embodiments of the present invention. They are only used to illustrate the technical ideas and features of the present invention. The purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, it is not limited to the present invention only. The patent scope of the present invention cannot be limited only by this embodiment. That is, any equivalent changes or modifications made in accordance with the spirit disclosed by the present invention, for researchers or technicians in the field, within the structure of the present invention, local improvements within the system and changes and transformations between subsystems are still within the patent scope of the present invention.

Claims

1. A concrete box beam bottom plate vibrating device, characterized in that: The invention comprises a trolley (9) which is arranged on both sides of a mold for producing a concrete box beam (2) and can move laterally, a vibrating unit (7) which is arranged in an inner mold plate (3) of the mold and is used to vibrate a bottom plate (16) of the box beam, and a driving unit which is arranged between the two trolleys (9) and is used to drive the vibrating unit (7) to move longitudinally.

2. A concrete box beam bottom plate vibrating device according to claim 1, characterized in that: The vibrating unit (7) comprises a connecting body (11), a guide frame (13) and a vertical vibrating rod (15) which are connected in sequence from top to bottom. The vibrating rod (15) is slidably connected to the guide frame (13). A second electric cylinder (14) is provided inside the guide frame (13) for driving the vibrating rod (15) to move up and down. After the vibrating rod (15) moves down, it is inserted into the concrete of the box beam bottom plate (16). After the vibrating rod (15) moves up, it is pulled out from the concrete of the box beam bottom plate (16). The connecting body (11) is fixedly connected to the driving unit.

3. A concrete box beam bottom plate vibrating device according to claim 2, characterized in that: The bottom of the connecting body (11) is rotatably connected to the top of the guide frame (13), and the connecting body (11) is provided with a first electric cylinder (12) for driving the guide frame (13) to swing.

4. A concrete box beam bottom plate vibrating device according to claim 2, characterized in that: A flexible connecting piece is provided between the second electric cylinder (14) and the vibrating rod (15), and two ends of the connecting piece are fixedly connected to the second electric cylinder (14) and the vibrating rod (15) respectively.

5. A concrete box beam bottom plate vibrating device according to claim 4, characterized in that: The connecting piece is made of rubber or silicone.

6. A concrete box beam bottom plate vibrating device according to claim 1, characterized in that: Transverse tracks (5) are respectively arranged on both sides of the mold, and the cranes (9) move synchronously along the corresponding tracks (5).

7. A concrete box beam bottom plate vibrating device according to claim 1, characterized in that: Each traveling crane (9) is provided with a support column (6), the driving unit comprises pulleys rotatably connected to the two support columns (6) and longitudinal steel wire ropes (10) wound around the two pulleys, the vibrating unit (7) is fixedly connected to the steel wire ropes (10), and one of the support columns (6) is provided with a reduction motor for driving the corresponding pulley to rotate.

8. The concrete box beam bottom plate vibrating device according to claim 1, characterized in that: Each traveling crane (9) is provided with a support column (6), the driving unit comprises sprockets rotatably connected to the two support columns (6) and longitudinal chains wound around the two sprockets, the vibrating unit (7) is fixedly connected to the chain, and a reduction motor for driving the corresponding sprocket to rotate is provided on one of the support columns (6).

9. A concrete box beam bottom plate vibrating device according to claim 1, characterized in that: The bottom of the vibrating unit (7) is provided with a visual recognition camera for detecting the steel bars at the position of the box beam bottom plate (16) at the bottom of the mold.

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