JPH0454268Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention is aimed at compacting concrete placed in a formwork and removing air bubbles that occur on the surface of the poured concrete in contact with the inner surface of the formwork. This relates to a vibrator with multiple functions.

(Prior Art) As shown in FIGS. 4 to 6, conventional vibrators of this type include a vibrating cylinder b of a rod-shaped vibrator a.
In addition, a vibrator in which a diaphragm f having a large number of through holes e is fixed via a mounting member d fixed by a clamp c was proposed in Japanese Utility Model Application Publication No. 58-3564. There is.

In the figure, g is a motor, h is a vibration isolator, i is a tightening screw for a clamp c, and j is a bolt that fixes a diaphragm f to a mounting member d.

(Problems to be Solved by the Invention) However, the vibrator is a ready-made rod-shaped vibrator with a vibrating plate attached to the vibrating part, and has a weak vibrating force and has a drawback in its concrete compaction function.

In addition, the concrete cover thickness of reinforced concrete structures is generally about 25 to 50 mm, and this is the distance between the inner surface of the formwork and the reinforcing bars. Since the diaphragm is attached to the formwork, it is difficult to insert the diaphragm into the narrow space between the inner surface of the formwork and the reinforcing steel, and when the purpose is to remove air bubbles,
There are practical difficulties.

(Means for solving the problem) The present invention was proposed to solve the above problem. A vibrating thin plate with a large number of through holes is sandwiched between a pair of mounting pieces, and is removably attached via bolts, and horizontally extending handles are attached to both ends of the joint hardware. This relates to concrete compaction and bubble removal vibrators.

(Function) Since the vibrator according to the present invention is configured as described above, the vibration motor is sandwiched between a pair of mounting pieces hanging from a horizontal joint metal fitting connected via bolts to the pedestal of the vibration motor. The vibrating thin plate, which is removably attached via bolts, is gripped by the horizontally extending handle and inserted into the concrete while being vibrated by the motor between it and the reinforcing bars of the formwork, and slowly inserted into the concrete. By repeating the pulling operation, vibrations are imparted to the concrete and it is compacted. Since the vibrating thin plate is directly connected to the vibrating motor, a large vibrating force can be imparted to the concrete.

At the same time, as the vibrating thin plate vibrates, the volume between the vibrating plate and the formwork changes, creating a type of pumping action, thereby sucking out and removing air bubbles in the concrete through the holes in the vibrating thin plate. It is something to do.

(Example) The present invention will be described below with reference to the illustrated embodiments.

1 is a vibration motor, and the pedestal 1a of the motor 1
A horizontal joint metal fitting 2 is removably connected to the joint metal fitting 2 via bolts 3, and a vibrating thin plate 5 having a large number of through holes 4 is sandwiched between a pair of mounting pieces 2a hanging vertically from the joint metal fitting 2. It is removably attached with bolts 6.

The vibrating thin plate 5 is made of a rigid material such as a steel plate or Bakelite, and has a length and width depending on the location where it is used.The vibrating thin plate 5 is attached to the horizontal joint metal fitting 2.

Handles 7 are attached to both ends of the joint hardware 2 via anti-vibration rubber 8 to prevent direct vibrations from being transmitted to the user's hands and facilitate operation.

Since the illustrated embodiment has the structure described above, the vibrating thin plate 5 is moved into the formwork 9 by grasping the handle 7.
By repeating the process of inserting the concrete 11 into the concrete 11 placed in the same formwork 9 while vibrating it between the concrete 11 and the reinforcing bar 10, and slowly pulling it out, the concrete 11 is given vibration and compacted, and at the same time, Air bubbles in the concrete 11 are sucked out from the through holes 4 by a type of pumping action that occurs when the volume between the vibrating thin plate 5 and the formwork 9 changes as the vibrating thin plate 5 vibrates. It is to be removed.

Thereafter, the above-mentioned operations are sequentially repeated on adjacent parts to compact the poured concrete 11 in the formwork 9 and to remove air bubbles in the concrete 11.

(Effects of the invention) According to the invention, by attaching the vibrating thin plate having a large number of through holes to the vibrating motor, the concrete in the formwork can be compacted, and
This removes air bubbles within the concrete.
At this time, the vibration thin plate is sandwiched between a pair of mounting pieces hanging vertically from a horizontal joint metal fitting connected to the pedestal of the vibration motor via bolts, and is attached via bolts to the formwork. The compaction effect can be improved by imparting a large vibration force to the inner concrete, and the vibrating thin plate can be inserted into a narrow space between the formwork and the reinforcing bars.

Further, since the vibrating thin plate is removably connected between the pair of mounting pieces, various vibrating thin plates having different widths and heights can be used depending on the application.

Furthermore, according to the present invention, since horizontally extending handles are attached to both ends of the joint hardware, the vibrating thin plate can be used in a state suspended from the vibrating motor by grasping the handles with both hands. As a result, the vibrator can be moved vertically into and out of the narrow space between the formwork and the reinforcing bars, making it easier to handle the vibrator.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the concrete compaction and bubble removal vibrator according to the present invention, Fig. 2 is a side view thereof, Fig. 3 is a slope view showing its usage condition, and Fig. 4 is a conventional one. FIG. 5 is a side view of the vibrator, and FIG. 6 is a view taken along the arrow in FIG. 1... Vibration motor, 1a... Pedestal, 2... Joint hardware, 2a... Mounting piece, 3... Bolt,
4... Through hole, 5... Vibrating thin plate, 6... Bolt, 7
...Handle, 8...Vibration-proof rubber, 9...Formwork, 10...
...Reinforced steel, 11...Concrete.

Claims (1)

[Scope of utility model registration request] A vibrating thin plate with numerous through holes is sandwiched between a pair of mounting pieces hanging vertically from a horizontal joint metal fitting connected to the pedestal of the vibration motor via bolts, and can be attached and detached via bolts. installed in
A vibrating machine for concrete compaction and bubble removal, characterized in that horizontally extending handles are attached to both ends of the joint hardware.