JPH0133286Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a formwork vibrator equipped with a device capable of fixing a formwork.

As is well known, when manufacturing reinforced concrete products such as U-shaped grooves and freeums, it is necessary to pack the concrete into the specified formwork in a single time without leaving any gaps.
The formwork is placed on a vibrator and vibrated. However, in the conventional method, since there is no device for fixing the formwork to the vibrator, the vibration amplitude of the vibrator is not directly transmitted to the formwork, resulting in a weak amplitude, which reduces the packing effect and increases the working time. moreover,
Since there is a difference between the vibration frequency of the vibrator and the vibration frequency of the formwork, a metallic sound is generated at the contact point between the vibrator and the formwork, causing noise. Furthermore, there is a drawback that the position of the formwork shifts back and forth and left and right due to the vibration of the vibrator.

This invention was made in view of the above circumstances, and aims to eliminate the drawbacks of the above-mentioned prior art by fixing the formwork placed on the vibrator.

An embodiment of this invention will be described below based on the drawings.

The formwork vibrator 1 of this invention consists of two sets of anti-vibration members 3a and 3b, each of which is supported at both ends, and is made of a vibration-absorbing material such as hard rubber and is fixed on an underframe 2. Vibrating members 4a, 4b, vibration sources 5a, 5b consisting of motors etc. fixed below the vibrating members 4a, 4b, the two vibrating members 4
Bearings 6 provided on opposite sides of a and 4b
a, 6b, square prism-shaped shafts 7a, 7b rotatably fixed at both ends; fixed arms 9a, 9b fixed to the shafts 7a, 7b and having rotatable rollers 8a, 8b fixed to their tips; Arms 9a, 9b
A drive source 10 fixed on an underframe 2 capable of rotationally urging two vibrating members 4a and 4b to opposite sides.
It consists of a and 10b. Sprockets 11a, 11b, 12a, 12b are fixed to the shafts 7a, 7b and the rotating shafts of the drive sources 10a, 10b, respectively, and these sprockets 11a, 11b, 1
Rotation transmitting members 13 and 14 made of chains or the like are wound around 2a and 12b. The formwork 15 includes a formwork main body 15a, a formwork stand 15b, and a reinforcing member 15c.
The form body 15a is fixed above the form base 15b, and concrete can be poured into the hollow part 15d to obtain a desired reinforced concrete product. Below the form frame base 15b, two pressed members 16a and 16b made of angle members are fixed in parallel in a square shape with an appropriate interval between them.

Next, an example will be described in which the operation of using this invention having the above configuration is automated.

When the formwork 15 transported by the roller conveyor A from the previous process reaches a predetermined position above the vibrating members 4a and 4b, the rotational drive of the roller conveyor A is stopped by a sensing device, a control device, etc. (not shown). do. Then, the roller conveyor a near the vibrating members 4a and 4b is lowered, and the formwork table 15b is moved to the vibrating member 4.
Drive sources 10a and 10b placed on the underframes 2a and 4b and fixed on the underframe 2 at the same time rotate and drive the shafts 7a and 7 via the rotation transmission members 13 and 14.
As the fixed arms 9a and 9b rotate, the ends of the fixed arms 9a and 9b are also rotated in the direction opposite to the two vibrating members 4a and 4b, so that the roller 8 at the end thereof rotates.
a and 8b press the inclined surfaces of pressed members 16a and 16b provided below the formwork base 15b. These two fixed arms 9a and 9b are rotationally driven with approximately the same force to prevent the formwork stand 15b from moving in the left-right direction (in the figure) and to prevent the mounting position of the formwork stand 15b from shifting in the left-right direction. or when the vibration members 4a, 4b
If the fixed arm 9 shifts due to vibration,
a and 9b so that it can be corrected to a certain extent and returned to the predetermined position. In this way, the formwork base 15b is fixed on the vibrating members 4a, 4b, and at the same time, the vibration source 5 fixed on the vibrating members 4a, 4b is
The power switches of a and 5b are turned on and vibration starts. Concrete is then poured into the hollow portion 15d of the form body 15a using a device not shown. Then, once the specified amount of concrete has been poured,
By operating a switch (not shown), the power switches of the vibration sources 5a and 5b are turned off, and at the same time, the drive source 1
Fixed arm 9 is fixed by operating switches 0a and 10b.
a, 9b rotate to the sides opposite to each other of the vibrating members 4a, 4b, and the rollers 8a, 8b at their tips are separated from the pressed members 16a, 16b, and the formwork base 15
b and fixed arms 9a and 9b are released. Next, after the roller conveyor a near the vibrating members 4a and 4b that has been lowered rises, the formwork 15 is conveyed to the next process as the roller conveyor A rotates, and after a predetermined period of time has elapsed, the concrete has hardened. Formwork 1
5 to obtain the desired concrete product. By repeating such operations, it becomes possible to automatically and continuously pour concrete into the hollow portion 15d of the formwork 15.

According to the formwork vibrator of this invention as described above,
Various effects as described below can be expected. First, in order to firmly fix the vibrating members 4a, 4b and the formwork base 15b with the fixed arms 9a, 9b, the amplitude of the vibration of the vibrating members 4a, 4b is directly transmitted to the formwork 15, so that the formwork 15 becomes large, and the concrete poured into the hollow part 15d of the formwork 15 is packed without any gaps, making it possible to obtain a high-quality product. In addition, since the vibrating members 4a, 4b and the formwork stand 15b are firmly fixed, the vibrating members 4a, 4b and the formwork stand 15b during vibration.
No metallic sound is generated at the contact point between the two, making it possible to prevent noise. Furthermore, formwork stand 1
Since the screw conveyor 5b does not shift in position due to the vibrations of the vibrating members 4a and 4b, the position of the screw conveyor used for pouring concrete can remain constant, and work efficiency can be significantly improved. Note that the fixed arms 9a and 9b are connected to one shaft 7.
When fixed to both ends of a and 7b,
By contacting the inner surface of the formwork base 15b, it is possible to prevent the formwork base 15b from shifting in the front-rear direction (in the figure). Furthermore, since the vibration isolation members 3a and 3b are interposed between the vibration members 4a and 4b and the underframe 2,
The vibrations of the drive sources 10a and 4b are hardly transmitted to the underframe 2, and the vibrations of the drive sources 10a and 10b are accordingly reduced, so that the durability of the drive sources 10a and 10b is improved. Furthermore, when a rotary actuator driven by hydraulic pressure converted from air pressure by an air-hydro unit is used as the drive source 10a, 10b, the problem of escape due to the compressibility of air is eliminated, and the vibration members 4a, 4b are It has the advantage that the more it vibrates, the more the fixing effect increases. This effect is further improved when chains are used as the rotation transmission members 13 and 14 to obtain strong tension.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted explanatory diagram showing the fixed state of the formwork and the vibrating member, Fig. 2 is a cross-sectional view of the main part of this invention,
FIG. 3 is a sectional view taken along the line -- in FIG. 2, and FIGS. 4 and 5 are explanatory views of movement of the formwork. 1... Form vibrator, 2... Underframe, 3a, 3b...
...Vibration isolation member, 4a, 4b...Vibration member, 5a, 5
b...Vibration source, 8a, 8b...Roller, 9a, 9
b... Fixed arm, 10a, 10b... Drive source,
13, 14... Rotation transmission member, 16a, 16b...
...Pressed member.

Claims (1)

[Claims for Utility Model Registration] 1. A formwork vibrator that fixes a formwork on a vibrating member by bringing a fixed arm into contact with the slope of a pressed member provided on the formwork, through a vibration isolating member. A biasing force is applied from a drive source fixed on the underframe to the opposing inner sides of two vibrating members each having a vibration source fixed on the underframe by a rotation transmission member in opposite directions of the vibrating members. 1. A formwork vibrator, characterized in that a fixing arm is provided, which rotates when receiving the formwork, and fixes the formwork by causing the circumferential surface of a roller provided at its tip to come into contact with the slope of the pressed member. 2. The formwork vibrator according to claim 1, wherein two fixed arms are provided on each vibrating member. 3. The form vibrator according to claim 1 or 2, wherein the drive source is a rotary actuator driven by hydraulic pressure converted from air pressure by an air-hydraulic unit. 4. The form vibrator according to claims 1 to 3, wherein the rotation transmission member is a chain.