JP2002096309A - Method and apparatus for vibrating form-fixing table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration apparatus for vibrating a form-fixing table wherein an air bubble in a concrete can be effectively extracted and it can be made low noise typed. SOLUTION: A form-fixing table 11; a driving mechanism 21 wherein after gradually raising the form-fixing table 11 in a horizontal state, that in the horizontal state is suddenly dropped; a guiding mechanism 41 for guiding a vertical motion of the form-fixing table 11; and a stopper mechanism 51 for catching the descending form-fixing table, are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of applying a shock and a vibration to a form fixing table to spread concrete to be filled into the form to every corner in the form.
The present invention relates to a method and an apparatus for exciting a form-fixing table for extracting air bubbles and effectively compacting concrete.

[0002]

2. Description of the Related Art When a concrete secondary product is formed by filling concrete into a formwork, the concrete is spread to every corner in the formwork by applying vibration to the formwork, and bubbles are extracted to remove the concrete. Effective compaction is performed. When vibration is applied to the formwork in this way, the imbalance weights disposed on the plurality of parallel rotating shafts attached to the formwork fixing table are moved in the circumferential direction of the rotating shaft to rotate the plurality of rotating shafts. For example, Japanese Unexamined Patent Publication No. Hei 9-141202 discloses an apparatus which applies vibration to a mold via a mold fixing table.

[0003]

The conventional form-fixing table vibrating device is configured to apply high-frequency vibration to effectively compact concrete, and therefore has the disadvantage of generating a large amount of noise. Therefore, if a low-noise type is used in which noise is suppressed, low-frequency vibration occurs, and the vibration is weakened. Therefore, bubbles in concrete cannot be effectively extracted, and bubble marks are generated on the surface of the secondary concrete product.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned disadvantages, and more specifically, it is possible to effectively extract air bubbles in concrete and to excite a form-fixing table which can be a low noise type. A method and a vibration device are provided.

[0005]

According to a method of exciting a form-fixing table according to the present invention, the form-fixing table is repeatedly lowered by rapidly lowering the form-fixing table which has been gradually raised to abut against the stopper. This is a method of giving a shock or vibration to an object. The form-fixing table is gradually raised in the horizontal state and rapidly lowered in the horizontal state, or the form-fixing table which is gradually raised and inclined is abruptly inclined in the opposite direction to the above-mentioned inclination. It may be lowered.

Further, a form-fixing table vibrating apparatus according to the present invention comprises a form-fixing table, a drive mechanism for gradually raising the form-fixing table and then rapidly lowering the form-fixing table. It has a guide mechanism for guiding up and down movement, and a stopper mechanism for receiving the descending formwork fixing table. The drive mechanism may be configured to gradually raise the form-fixing table in the horizontal state and then rapidly lower in the horizontal state, or to incline the form-fixing table and gradually raise the table in the opposite direction to the inclination. May be suddenly lowered by the inclination of, and the formwork fixing table may be swung.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a form fixing table vibrating apparatus according to a first embodiment of the present invention, and FIG.
3 is an explanatory view showing an arrangement of cams and the like of the form fixed table vibrating apparatus shown in FIGS. 1 and 2, and FIGS. 4 and 5 are operations. FIG. In FIGS. 1 and 2, the right half is broken, and some components are not shown.

In these figures, reference numeral 1 denotes a form fixing table vibrating device, and a form fixing table 11 having a rectangular shape in a plan view.
A drive mechanism 21 for vertically moving the form-fixing table 11, a guide mechanism 41 for guiding the form-fixing table 11 up and down, a stopper mechanism 51 for receiving the descending form-fixing table 11, and each mechanism 21 , 41, 51 are attached to the base 61.

In the above-mentioned form fixing table 11, the form M is detachably fixed to the upper side by a clamp mechanism (not shown), and an abutment member 12L extending in the front-rear direction is provided at the left end of the lower surface. At the same time, an abutment member 12R extending in the front-rear direction is attached to the right end of the lower surface.

The driving mechanism 21 is attached to the front, rear, left and right so as to be rotatable inwardly from the lower four corners of the formwork fixing table 11 so as to be positioned at the top of the rectangle.
Rollers 22LF, 22LB, 22RF, 22RB
And these rollers 22LF, 22LB, 22RF, 22R
Rollers 22LF, 22LB, 22RF, and 22R each having a cam surface 23a for gradually lifting and rapidly lowering B.
B, 23 LB, 23 LB, 2
3RF, 23RB and front left and rear left cams 23LF, 23
A shaft 24L having LBs attached to both ends thereof and rotatably attached to the upper surface of the base 61 and right and front right and rear right cams 23RF and 23RB are attached to both ends and are rotatably attached to the upper surface of the base 61. Shaft 24
R, a sprocket 25L attached to the rear end of the shaft 24L, a sprocket 25R attached to the rear end of the shaft 24R, and an idler attached to the base 61 so as to be located between the sprocket 25L and the sprocket 25R. The sprocket 26, the idle sprocket 27 attached to the base 61 so as to be located at the lower right side of the sprocket 25L, and the base 61 so as to be located at the upper right side of the idle sprocket 27
A geared motor 28 attached to the upper surface of the gearwheel, and a sprocket 25 from the sprocket 28a attached to the geared motor 28 to the lower side of the idle sprocket 27
L, upper side of idle sprocket 26, sprocket 2
After passing through the lower side of 5R, the chain 29 returns to the sprocket 28. The rollers 22LF,
The diameter of 22LB, 22RF, 22RB is the cam surface 23a.
(See FIG. 4).

Next, the guide mechanism 41 has four L-shaped (angled) plan-viewed covers attached to the lower four corners of the form-fixing table 11 so as to open inward and extend downward. Guide members 42LF, 42LB, 42RF, 42R
B and the guided members 42LF, 42LB, 42R
F, 42RB, and is disposed above the base 61 so as to extend upward, and the corresponding guided member 42LF,
It comprises guide members 43LF, 43LB, 43RF, 43RB for guiding the vertical movement of 42LB, 42RF, 42RB. The guide members 43LF, 43LB,
43RF and 43RB are the corresponding guided members 42L.
F, 42LB, 42RF, and 42RB are located at L-shaped open portions.

Further, the stopper mechanism 51 is provided between the front left and rear left guide members 43LF and 43LB.
L, that is, a stopper base 52L that extends back and forth at the upper left end portion of the base 61 and is attached to the base 61 so as to be adjustable in height, and is disposed on the stopper base 52L at predetermined intervals in the front and rear direction. Between the stopper 53L made of rubber and having a cushioning function with which the abutment member 12L abuts, and the right front and right rear guide members 43RF and 43RB.
R, that is, a stopper base 52R that extends back and forth on the upper right side of the base 61 and is attached at an adjustable height, and is disposed on the stopper base 52R at predetermined intervals in the front and rear direction. And a rubber stopper 53R having a cushioning function with which the abutment member 12R abuts.

The rollers 22RF, the cams 23RF, the guided members 42RB, and the guide members 43RB are not shown in FIGS. 1 and 2.

Next, the operation will be described. First, FIG.
As shown in the figure, the cam 23LF and the cam 23LB are in phase, the cam 23RF and the cam 23RB are in phase,
Further, the cam 23LF, the cam 23LB and the cam 23RF,
When the geared motor 28 is driven to rotate the cams 23LF and 23LB in the clockwise direction and the cams 23RF and 23RB are rotated in the counterclockwise direction while the 23RB and the 23RB are in the same phase, a step h occurs on the cam surface 23a. The form-fixing table 11 is guided by the guide mechanism 41 by this step h and descends sharply in a horizontal state.
R abuts against the stoppers 53L and 53R. Even if the form-fixing table 11 is suddenly lowered in the horizontal state or the inclined state, the step h of the cam surface 23a is reduced by the rollers 22LF, 22F.
Since the diameter is shorter than the diameters of LB, 22RF, and 22RB, the form-fixing table 11 is provided with cams 23LF, 23L.
B, 23RF and 23RB do not collide.

As described above, when the form-fixing table 11 suddenly descends in the horizontal state and the abutment members 12L, 12R abut against the stoppers 53L, 53R, the gravitational force of the form-fixing table 11 and the form M is directed downward. Acts, and the form fixing table 11 and the form M slightly vibrate by abutting against the stoppers 53L and 53R. When the cams 23LF, 23LB are further rotated clockwise and the cams 23RF, 23RB are further rotated counterclockwise, the rollers 22LF, 22LB, 22RF,
Cams 23LF, 23LB, 23R corresponding to 22RB
Since it is pushed up by the cam surface 23a of F, 23RB, the form fixing table 11 is guided by the guide mechanism 41, gradually rises in a horizontal state, and returns to the state of FIG. After that,
The same operation is repeated.

Next, as shown in FIG.
Although LF and cam 23LB are in phase, and cam 23RF and cam 23RB are in phase, cams 23LF and 2LB
The state in which the phase of 3LB is advanced, for example, by 45 degrees from the phase of the cams 23RF and 23RB (the form fixing table 11).
And the mold M is tilted slightly upward to the left), the geared motor 28 is driven to rotate the cams 23LF and 23LB clockwise, and the cams 23RF and 23RB are rotated.
Is rotated counterclockwise, the cams 23LF, 23LB
Of the cam surface 23a of the cam 23RF, 23R
Since the cam surface 23a of B pushes up the rollers 22RF and 22RB, the left end of the form-fixing table 11 is guided by the guide mechanism 41 by the step h and rapidly descends, so that the abutting member 12L abuts against the stopper 53L. Then, the right end of the formwork fixing table 11 further rises. Therefore,
As shown in FIG. 5B, the form fixing table 11 and the form M are inclined upward to the right and swing.

As described above, when the left end of the form-fixing table 11 suddenly descends and the abutment member 12L abuts against the stopper 53L, the downward gravity is applied to the left end of the form-fixing table 11 and the left end of the form M. Works and stops 5
By abutting against 3L, the left end of the form fixing table 11 and the left end of the form M slightly vibrate. And FIG.
From the state shown in (b), the cams 23LF and 23LB are further rotated clockwise, and the cams 23RF and 23LB are rotated.
When the RB is further rotated counterclockwise, the cam 23L
Since each surface 23a of F, 23LB, 23RF, and 23RB pushes up the rollers 22LF, 22LB, 22RF, and 22RB, the roller mold fixing table 11 and the mold M rise while maintaining the state of being inclined to the right as shown in FIG. c)
The state shown in is shown.

From the state shown in FIG.
While further rotating F, 23LB clockwise,
When the cams 23RF and 23RB are further rotated counterclockwise, a step h is formed on the cam surface 23a of the cams 23RF and 23RB.
Occurs, and the cam surfaces 23a of the cams 23LF, 23LB push up the rollers 22LF, 22LB, so that the right end of the formwork fixing table 11 is guided by the guide mechanism 41 by the step h and rapidly descends, so that the abutting member 12R Abuts against the stopper 53R, and the left end of the formwork fixing table 11 further rises. Therefore, as shown in FIG.
The form-fixing table 11 is in a state of slightly inclining to the left and swings.

As described above, when the right end of the form fixing table 11 suddenly descends and the abutment member 12R abuts on the stopper 53R, the downward gravity is applied to the right end of the form fixing table 11 and the right end of the form M. Works and stops 5
The right end of the form fixing table 11 and the right end of the form M vibrate slightly by abutting against 3R. And FIG.
From the state shown in (d), the cams 23LF and 23LB are further rotated clockwise and the cams 23RF and 23LB are rotated.
When the RB is further rotated counterclockwise, the cam 23L
Since each surface 23a of F, 23LB, 23RF, and 23RB pushes up the rollers 22LF, 22LB, 22RF, and 22RB, the form-fixing table 11 and the form M rise while maintaining a state of slightly rising to the left. (A)
It returns to the state shown in. Thereafter, the same operation is repeated.

In FIG. 5, the form fixing table 11 and the form M are swung right and left by making the phases of the cams 23LF, 23LB and the cams 23RF, 23RB different, but the cam 23LF and the cam 23RF are the same. Phase and cam 23L
B and the cam 23RB have the same phase, and the cams 23LF and 23R
If the phase of F and the phase of the cams 23LB, 23RB are different, the operation description will be omitted, but the form fixing table 11 and the form M can be swung back and forth.

As described above, according to the first embodiment of the present invention, the mold fixing table 11 which has been gradually raised is rapidly lowered and abutted against the stoppers 53L, 53R, thereby repeatedly forming the mold. Since it is possible to apply shock and vibration to the frame M, it is possible to spread concrete to all corners of the form M, and to extract air bubbles to effectively compact the concrete. Can be molded. And the formwork M
, A large impact can be given to the device, so that low-frequency vibration can be achieved and noise can be suppressed. Further, since the geared motor 28 having a small power can be used, the cost can be reduced and the power saving type can be achieved.

The form-fixing table 11 can be raised in a horizontal state and lowered in a horizontal state, or it can be tilted and raised, and lowered and tilted in a direction opposite to the raised tilt. May be moved. When the form-fixing table 11 is moved up and down in a horizontal state as described above, the form M does not shake when a high-concrete concrete secondary product is formed. It will be easier. In addition, when the form fixing table 11 is swung, a surface pressure can be applied to the side surface of the form M, so that a concrete secondary product having a more beautiful surface can be formed. Then, the cams 23LF, 23LB, 23RF, 23
The rotation speed of the RB is, for example, 1 rps to 2 rps, and the moving stroke of the fixed form table 11 can be freely adjusted. The movement stroke of the form-fixing table 11 can be determined by adjusting the step h of the cam surface 23a or the height of the stopper mechanism 51.

FIG. 6 is a front view showing a form fixed table vibrating apparatus according to a second embodiment of the present invention, FIG. 7 is a right side view of the form fixed table vibrating apparatus shown in FIG. 6, and FIG. FIG. 8 is an explanatory view showing the arrangement of motors and cams of the form fixed table vibrating device shown in FIGS. 6 and 7, and the same or corresponding parts as in FIGS. 6 and 7, a part of the right half is broken,
Illustration of some components is omitted.

In these figures, reference numeral 2 denotes a form fixing table vibrating device, and a form fixing table 11 having a rectangular shape in a plan view.
A drive mechanism 31 for vertically moving the form-fixing table 11, a guide mechanism 41 for guiding the up-and-down movement of the form-fixing table 11, a stopper device 51 for receiving the descending form-fixing table 11, and various mechanisms. It comprises a base 61 to which 31, 41 and 51 are attached.

The above-mentioned driving mechanism 31 is attached to the front, rear, left and right so as to be rotatable inwardly from the lower four corners of the formwork fixing table 11 so as to be positioned at the top of a rectangle.
Rollers 32LF, 32LB, 32RF, 32RB
And these rollers 32LF, 32LB, 32RF, 32R
Rollers 32LF, 32LB, 32RF, 32R each having a cam surface 33a for gradually lifting and rapidly lowering B.
Cams 33LF, 33LB, 3 arranged corresponding to B
3RF, 33RB, a left front cam 33LF is mounted, a shaft 34LF rotatably mounted on the upper surface of the base 61, and a left rear cam 33LB are mounted,
A shaft 34LB rotatably attached to the upper surface of the base 61, and a shaft 34 to which the right front cam 33RF is attached and which is rotatably attached to the upper surface of the base 61.
RF and the right rear cam 33RB are attached.
Shaft 34RB rotatably mounted on the upper surface of 1
And a gear 35 attached to the front end of the shaft 34LF.
LF, a gear 35LB attached to a rear end of the shaft 34LB, a gear 35RF attached to a front end of the shaft 34RF, a gear 35RB attached to a rear end of the shaft 34RB, and a cam 33LF corresponding to the cam 33LF. A geared motor 36LF disposed on the upper surface, a geared motor 36LB disposed on the upper surface of the base 61 corresponding to the cam 33LB, a geared motor 36RF disposed on the upper surface of the base 61 corresponding to the cam 33RF, and a cam 33RB. The geared motor 36RB disposed on the upper surface of the base 61 in correspondence with the above, a gear 37LF attached to the geared motor 36LF and meshing with the gear 35LF, a gear 37LB attached to the geared motor 36LB and meshing with the gear 35LB, and a geared motor 36RF Mounted, gear 35 A gear 37RF to F meshes attached to geared motor 36RF, is composed of a gear 37RF to gear 35RF meshes.

The rollers 32LF, 32LB, 32R
The diameter of F, 32RB is set larger than the step h of the cam surface 33a (see FIG. 6). Therefore, even if the form-fixing table 11 suddenly descends in the horizontal state or the inclined state, the step h of the cam surface 33a is reduced by the rollers 32LF, 32L.
B, 32RF, and 32RB are smaller than the diameters, so that the form-fixing table 11 has the cams 33LF, 33LB,
There is no collision with 33RF, 33RB. The roller 32RF, the cam 33RF, the shaft 34RF, the gear 35RF, the geared motor 36RF, the gear 37RF, the guided member 42RB, and the guide member 43RB are shown in FIG.
In FIG. 7 and FIG. 7, illustration is omitted.

In the case of the second embodiment, since the operation is the same as that of the first embodiment, the description is omitted, but the same effect as that of the first embodiment can be obtained. And this second
In the case of the embodiment, the cams 33LF, 33LB, 33RF,
33RB and geared motors 36LF, 36LB, 36R
F and 36RB correspond one-to-one, so when the form-fixing table 11 is swung right and left or back and forth, the rotation speeds of the cams 33LF and 33LB and the cams 33RF and 33RB may be different, or the cams 33LF and 33RB may be different. 33RF and cam 33
By making the number of rotations different from LB and 33RB, the form-fixing table 11 can be swung by complicated movement, and the intended purpose can be achieved, and the concrete secondary surface having a more beautiful surface can be achieved. Products can be molded.

[0028]

As described above, according to the present invention, by repeatedly lowering the form-fixing table that has been gradually raised and abutting it against the stopper mechanism (stopper), the impact on the form is repeated. Because it can give vibration
The concrete can be spread to every corner of the formwork, and the bubbles can be extracted to effectively compact the concrete, thereby forming a concrete secondary product having a clean surface. And since a big impact can be given to a formwork, it becomes possible to make it a low frequency vibration and noise can be suppressed. Further, since the driving mechanism can be constituted by a motor having a small power, the cost can be reduced and the power saving type can be achieved.

Further, since the form-fixing table is moved up and down in a horizontal state, when a high-concrete secondary product is formed, the form does not shake and the concrete can be easily put into and filled into the form. . In addition, the form-fixing table is raised by tilting, and lowered and rocked in the opposite direction to the raised tilt, so that surface pressure can be applied to the side surfaces of the form, which makes it more beautiful. It is possible to mold a concrete secondary product with a smooth surface.

[Brief description of the drawings]

FIG. 1 is a front view showing a form-fixing table vibrating device according to a first embodiment of the present invention.

FIG. 2 is a right side view of the form fixed table vibrating apparatus shown in FIG.

FIG. 3 is an explanatory diagram showing an arrangement of cams and the like of the form-fixing table vibrating device shown in FIGS. 1 and 2;

FIG. 4 is an operation explanatory diagram.

FIG. 5 is an operation explanatory diagram.

FIG. 6 is a front view showing a form-fixing table vibrating device according to a second embodiment of the present invention.

FIG. 7 is a right side view of the form fixed table vibrating device shown in FIG. 6;

8 is an explanatory view showing the arrangement of motors and cams of the form-fixed table vibrating device shown in FIGS. 6 and 7. FIG.

DESCRIPTION OF SYMBOLS 1, 2 Form fixed table vibrating device 11 Form fixed table 12L, 12R abutment member 21 Drive mechanism 22LF, 22LB roller 22RF, 22RB roller 23LF, 23LB cam 23RF, 23RB cam 23a Cam surface 24L, 24R shaft 25L, 25R sprocket 26, 27 idle sprocket 28 geared motor 28a sprocket 29 chain 31 drive mechanism 32LF, 32LB roller 32RF, 32RB roller 33LF, 33LB cam 33RF, 33RB cam 33a cam surface 34LF, 34LB, 34LB, 34LB Gear 35RF, 35RB Gear 36LF, 36LB Geared motor 36RF, 36RB Geared motor 37LF, 37LB Gear 37RF 37RB gear 41 guide mechanism 42LF, 42LB guided member 42RF, 42RB guided member 43LF, 43LB guide member 43RF, 43RB guide member 51 stopper mechanism 52L, 52R stopper base 53L, 53R stopper 61 base M formwork h step

Claims (6)

[Claims] 1. A method for vibrating a fixed formwork table, comprising repeating the step of rapidly lowering the fixed formwork table, which has been gradually raised, to abut against a stopper. 2. A vibrating method for a fixed form table, comprising repeating the step of rapidly lowering the fixed form table which has been gradually raised in the horizontal state and abutting the stopper with the stopper in the horizontal state. 3. By repeatedly lowering the form-fixing table, which has been tilted and gradually raised, to a stopper by abruptly lowering the table in a direction opposite to the tilt,
A method for exciting a fixed form table, comprising: swinging the fixed form table. 4. A form fixing table, a drive mechanism for gradually raising the form fixing table, and then rapidly lowering the table, a guide mechanism for guiding the up and down movement of the form fixing table, And a stopper mechanism for receiving the form-fixing table. 5. The form-fixing table vibrating device according to claim 4, wherein the driving mechanism gradually raises the form-fixing table in a horizontal state and then rapidly lowers the form-fixing table in a horizontal state. A formwork fixed table vibrating device. 6. The form-fixing table vibrating device according to claim 4, wherein the drive mechanism tilts the form-fixing table and gradually raises the table, and thereafter, at an inclination in a direction opposite to the inclination. A vibrating device for fixed form table, wherein the vibrating device is lowered rapidly to swing the fixed form table.