JP2978133B2 - Formwork drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a form driving apparatus used in a step of putting ready-mixed concrete into a form.

[0002]

2. Description of the Related Art Conventionally, in the production of a concrete product in which ready-mixed concrete is poured into a formwork and then cured and demolded to obtain a concrete product, in the ready-mixed concrete charging process, from the initial stage of charging of ready-mixed concrete, immediately after the completion of charging. For example, an operation of vertically vibrating the form by a table vibrator is performed. This work is carried out for compacting the ready-mixed concrete by spreading the ready-mixed concrete to every corner of the formwork and eliminating the large voids in the ready-mixed concrete created by the incorporation of air when the ready-mixed concrete is charged.

[0003]

By the way, in the work of vibrating the formwork by the vibration of the conventional table vibrator or the like, although the ready-mixed concrete can be compacted, the surface of the concrete product obtained after demolding can be compacted. Had many large and small depressions. This is because large and small air bubbles that existed before being put into the ready-mixed concrete also appeared on the surface of the ready-mixed concrete that was in contact with the inner wall surface of the formwork and solidified as they were, so that the bubbles turned into depressions on the surface of the concrete product What remains. Many large and small depressions on this surface are undesirable because they impair the appearance of the concrete product.

Therefore, in order to eliminate the depression on the surface of the concrete product, it has been practiced to continuously apply an excessive amount of vibration to the formwork more than the vibration required for compacting the fresh concrete. However, according to this method, at the same time as the large and small bubbles on the surface of the ready-mixed concrete in contact with the inner wall surface of the formwork, even the required bubbles before being put into the ready-mixed concrete are scattered into the air above. became. This means
The result is that the amount of air inside the concrete required for preventing the freezing of the concrete product is reduced, which is not preferable. Excessive vibration caused by a table vibrator or the like generates a loud noise, which is a serious problem in terms of occupational safety measures or noise environment with nearby residents.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and an object of the present invention is to provide a concrete vibrator that does not generate a loud noise due to the vibration applied by a table vibrator. An object of the present invention is to provide a formwork driving device used in a step of putting ready-mixed concrete into a formwork, in which the product surface is smoothened without significantly reducing the amount of air inside the product.

[0006]

According to the present invention, a mold driving apparatus used in a step of charging ready-mixed concrete into a mold has the following configuration to achieve the above object.
That is, the invention according to claim 1 is a formwork driving device used in a step of pouring ready-mixed concrete into the formwork, the drive comprising a connecting member for converting the rotation of the drive shaft into a reciprocating motion. Means, a cradle fixed to the connecting member,
The axial direction is made parallel to the axial direction of the drive shaft,
A supporting portion rotatably mounted at a predetermined position, the receiving portion being mounted on the supporting portion, the form being mounted on the receiving portion, and the connecting member being rotated by rotation of the drive shaft. The pedestal is reciprocated by being moved on the support portion while being swung up and down about the support portion via the support.

[0007] As a result, the mold is reciprocated in the horizontal direction while swinging up and down through the receiving stand, and acceleration is given to the mold. Moves relative to the formwork according to the law of inertia. As a result, the ready-mixed concrete in the formwork
It is compacted. When the ready-mixed concrete moves relative to each other in the formwork, the force acting on the ready-mixed concrete includes not only the inertial force but also the component force of gravity, so that the relative movement of the ready-mixed concrete put into the formwork can be performed smoothly. Will be Also, the poured ready-mixed concrete is wavy during the reciprocating motion, and a mortar layer is formed on the inner wall surface of the formwork that is visible and hidden when the charged ready-mixed concrete is waving. That is, only the mortar other than the coarse aggregate in the ready-mixed concrete adheres to the inner wall surface of the form that appears when the upper surface of the ready-mixed concrete descends. As a result, a mortar layer is formed so as to adhere to the inner wall surface of the formwork that is visible and hidden by the waving of the ready-mixed concrete, and the mortar layer is sequentially upwardly from below the inner wall surface of the formwork as the ready-mixed concrete is charged. And, it covers the entire surface of the ready-mixed concrete in contact with the inner wall surface of the formwork. The concrete product covered with the mortar layer thus formed has a smooth surface with few air bubbles appearing on the surface. Furthermore, it does not generate a loud noise as would occur when an excessive amount of vibration is applied to the formwork by a table vibrator or the like. I will not let you.

[0008] The invention according to claim 2 also provides
A driving device for a formwork used in a step of pouring ready-mixed concrete into the formwork, comprising a support shaft reciprocatingly rotating at a predetermined angle and a connecting member transmitting a reciprocating rotation of the support shaft; and And a receiving base fixed to the connecting member of the driving means, the form is attached to the receiving base, and the reciprocating rotation of the support shaft causes the receiving base to pass through the connecting member. , Reciprocating at a predetermined angle.

Thus, the mold is reciprocated at a predetermined angle via the cradle and acceleration is given to the mold. The ready-mixed concrete put into the mold is subjected to the law of inertia. And move relative to the formwork. As a result, the ready-mixed concrete in the formwork is compacted.
And when the ready-mixed concrete moves relatively within the formwork,
The force acting on the ready-mixed concrete includes a component force of gravity in addition to the inertial force, so that the relative movement of the ready-mixed concrete put into the formwork is performed smoothly. Further, since the receiving base attached to the support shaft can be directly guided in the reciprocating rotation direction by the connecting member, the driving device for the formwork can be simplified.

Further, as in the third aspect of the present invention, it is preferable that the pedestal is reciprocated below the drive shaft.

Further, as in the invention according to claim 4, the pedestal may be reciprocally rotated above the drive shaft.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment according to the present invention will be described below with reference to the conceptual diagrams of FIGS.

Reference numeral 2 in the figure denotes a mold driving device for use in a step of putting ready-mixed concrete into the mold 1. The driving device 2 for the form 1 includes a receiving table 3 on which the form 1 is mounted, a supporting roller 4 as a support for mounting the receiving table 3, and a driving unit 5 for reciprocating the receiving table 3. Consists of

The driving means 5 converts the rotational motion of a drive output shaft such as a motor into a reciprocating motion by, for example, a crank mechanism or other appropriate means. The drive means 5 includes a motor (not shown) in which the axial direction of the drive shaft 5a is horizontal, a crank plate 5b fixed to the drive shaft 5a, and one end 5d rotatable on the crank plate 5b. And the attached connecting member 5c.
The other end 5e of the connecting member 5c has a pedestal 3
Is, for example, detachably fixed. Further, the support 3 is placed on the support roller 4.
The support roller 4 has its axial direction parallel to the axial direction of the drive shaft 5a. Further, the supporting roller 4 is provided so that when the one end 5d of the connecting member 5c reaches the left end or the right end, the connecting member 5c and the cradle 3 are in the horizontal direction (the horizontal direction in FIG. 1). It is mounted rotatably in position. On the upper surface 3a of the receiving base 3, a mold 1 that is opened upward is attached so as to be detachably fixed, for example.

Therefore, in the driving device 2 of the mold 1, when a motor (not shown) of the driving means 5 is operated, the crank plate 5b attached to the driving shaft 5a of the motor or the like rotates. Then, the rotational motion of the crank plate 5b is converted into a reciprocating motion by the connecting member 5c. As a result, the cradle 3 reciprocates via the connecting member 5c. At this time, in the illustrated embodiment, the receiving base 3 is supported by a supporting roller 4 serving as a supporting portion.
Is reciprocated so as to reciprocate in the horizontal direction on the support roller 4 while swinging up and down with the contact portion 4a between the lower surface of the support roller 4 and the support roller 4 as a fulcrum (see FIGS. 1 to 8).

Next, the step of putting ready-mixed concrete will be briefly described. When the driving means 5 operates and the cradle 3 reciprocates, the mold 1 attached to the cradle 3 also reciprocates similarly. Then, simultaneously with the start of the reciprocating movement of the mold 1, the loading machine 6 positioned above the mold 1
Then, the injection of ready-mixed concrete into the formwork 1 opening upward is started. Thus, the mold 1 is reciprocated by the driving device 2 including the receiving base 3, the support roller 4 and the driving means 5 so that the put ready-mixed concrete 7 is shaken and waved. Further, the reciprocating motion of the mold 1 may be performed after the charging of the ready-mixed concrete is temporarily stopped.

Next, the operation of the driving device 2 for the mold 1 having the above-described structure will be described in order. 1 to 8
It is an example showing one cycle of the reciprocating motion of the mold 1 by the driving device 2, and shows a state when ready-mixed concrete is poured in about half of a predetermined amount. In the drawing, reference symbol A indicates acceleration, F indicates inertial force, W indicates component force of gravity, and arrows drawn from those codes indicate directions in which those forces act. Further, the rotation direction of the drive shaft 5a of the drive means 5 is assumed to rotate in a counterclockwise direction. In FIGS. 1 to 8, the reinforcing bars arranged in the mold 1 are omitted.

FIG. 1 shows a state in which the driving means 5 is operated and the connecting member 5c reaches the left end of the reciprocating motion and is horizontal. The mold 1 also reaches the left end and becomes horizontal. When the mold 1 starts to move from the left end, the value of the acceleration A reaches the maximum value, and the acceleration A is given to the mold 1. Therefore, the acceleration A is thrown into the mold 1 according to the law of inertia. An inertia force F is generated in the fresh concrete 7. As a result, the ready-mixed concrete 7 placed in the form 1 moves leftward with respect to the form 1 and the vicinity of the left end of the ready-mixed concrete 7 rises upward (see FIG. 1). At this time, the inertia force F also reaches the maximum value. Similarly, FIG. 2 shows a state in which the one end 5d of the connecting member 5c has rotated 45 degrees counterclockwise from the state of FIG. Here, the ready-mixed concrete 7 put into the form 1 is moved to the left with respect to the form 1 due to the inertial force F, but the component W of gravity is applied to the ready-mixed concrete 7. Since it works in the direction opposite to the inertial force F, the next time the ready-mixed concrete 7 turns from left to right, it is performed smoothly. FIG. 3 shows a state in which the one end 5d of the connecting member 5c has rotated further 45 degrees in the counterclockwise direction from the state of FIG. 2 and the one end 5d of the connecting member 5c has reached the lower end. Is shown.
Here, the ready-mixed concrete 7 put into the form 1 includes
The acceleration A and the inertial force F do not work, and only the gravity component W works, so that the ready-mixed concrete 7 is almost in a horizontal state. FIG. 4 shows a state where the one end 5d of the connecting member 5c is further rotated by 45 degrees from the state shown in FIG. Here, form 1
The ready-mixed concrete 7 which has been put into the container is smoothly moved to the right relative to the form 1 by the action of the inertia force F and the component force W of gravity, and the vicinity of the right end of the ready-mixed concrete 7 rises upward. It rises (see FIG. 4). FIG. 5 shows a state in which one end 5d of the connecting member 5c is further rotated 45 degrees from the state of FIG. 4, and shows a state in which the connecting member 5c reaches the right end of the reciprocating motion and is horizontal. ing. At this time,
Inertial force F acting on ready-mixed concrete 7 placed in form 1
Works in the reverse direction of FIG. 1, and the magnitude of the inertial force F reaches the maximum value as in FIG. Therefore, the vicinity of the right end of the ready-mixed concrete 7 rises further upward than the state of FIG. 4 (see FIG. 5). FIGS. 6, 7, and 8 show a state in which the one end 5d of the connecting member 5c is further rotated by 45 degrees, respectively, as shown in FIGS. 2, 3, and 4 described above. Compared to the state shown, the magnitudes of the inertial force F and the gravity component W acting on the ready-mixed concrete 7 are the same, but the directions in which those forces act are opposite.

As can be seen from FIGS. 1 to 8, the mold 1 mounted on the pedestal 3 is
In conjunction with the movement of, it moves so as to reciprocate laterally while swinging up and down. When the ready-mixed concrete 7 placed in the form 1 relatively moves in the form 1, the force acting on the ready-mixed concrete 7 placed in the form 1 is not only the inertial force F but also the gravity. Since the force W is also applied, the relative movement is performed smoothly. Furthermore, the ready-mixed concrete 7
Since the gravitational component W acts, the power for reciprocating the form 1, that is, the power for applying acceleration to the form 1 can be reduced.

Next, the form 1 used in the step of charging the ready-mixed concrete into the form 1 shown in the first embodiment will be described.
The operation and effect of the driving device 2 will be described. The ready-mixed concrete 7 put into the form 1 is relatively moved and shaken by the inertia force F and the component W of gravity in the form 1 reciprocating in the lateral direction while being rocked up and down. As a result, the ready-mixed concrete 7 in the form 1 is compacted. further,
A mortar layer is formed on the inner wall surfaces 1a and 1b of the formwork 1 that is visible when the ready-mixed concrete 7 is wavy. That is, only the mortar portion except the coarse aggregate in the ready-mixed concrete 7 is provided on the inner wall surfaces 1a and 1b of the formwork 1 which appear when the upper surface of the ready-mixed concrete 7 descends due to the waving of the ready-mixed concrete 7. But, for example, 2
It adheres with a thickness of about 3 mm. As a result, a mortar layer is formed so as to adhere to the inner wall surfaces 1a and 1b of the form 1 which are visible and hidden by the waving of the ready-mixed concrete 7, and the mortar layer is formed on the inner wall surface of the form 1 as the ready-mixed concrete is charged. It covers the entire surface of the ready-mixed concrete 7 in contact with 1a, 1b. The concrete product covered with the mortar layer thus formed has a smooth surface with few air bubbles. Further, unlike the case where excessive vibration is applied to the form 1 by a table vibrator or the like, the compacting is performed without giving an impact to the form 1, so that necessary air bubbles in the ready-mixed concrete 7 are reduced. It does not disappear. Therefore, the surface of the concrete product can be made smooth without significantly reducing the amount of air inside the concrete for preventing freezing of the product. Further, vibration is given by a table vibrator or the like, or the
As compared with the case where the moving direction of the concrete is changed, the noise generated when the ready-mixed concrete is tightened or the like can be significantly reduced, and the formwork 1 is not damaged.

FIG. 9 is a conceptual diagram showing a second embodiment of a mold driving device. The second embodiment is a driving device for the formwork 1 used in the step of putting ready-mixed concrete into the formwork 1 as in the first embodiment. The driving device 8 includes a support shaft 10 that reciprocates at a predetermined angle and coupling members 11 and 11 that transmit the reciprocating rotation of the support shaft 10.
And a receiving table 12 fixed to a lower portion of the connecting members 11 of the driving means 9,
The formwork 1 is attached to the cradle 12.

The driving means 9 makes the axial direction of the support shaft 10 provided in the driving means 9 horizontal, and
Is reciprocated to a predetermined angle by a gear mechanism (not shown) or the like, for example. Then, connecting members 11, 11 for transmitting the reciprocating rotation of the support shaft 10 to the support shaft 10.
Is attached so as to extend below the support shaft 10. Further, a receiving table 1 is provided below the connecting members 11 and 11.
2 is fixed, and the formwork 1 is attached to the upper surface 12a of the receiving base 12 so as to be detachably fixed, for example.

Thus, when the gear mechanism of the driving means 9 is operated, the driving device 8 of the mold 1 reciprocates the support shaft 10 of the driving means at a predetermined angle, and the connecting members 11, 1
1, the cradle 12 is reciprocated below the support shaft 10 and at a predetermined angle. The two-dot chain line in the figure is
FIG. 9 shows a state in which the cradle 12 reciprocates clockwise and counterclockwise (see FIG. 9).

The operation and effect of the driving device 8 of the formwork 1 used in the step of loading into the ready-mixed concrete formwork 1 according to the second embodiment are substantially the same as those of the first embodiment. That is, the ready-mixed concrete 7 put into the form 1
Is reciprocally moved by the inertial force F and the component force W of gravity in the reciprocating form 1 and is swung like a wave. Therefore, similarly to the first embodiment, for example, a case where vibration is applied by a table vibrator or the like, or a case where the moving direction of the mold 1 is changed by colliding the mold 1 with a wall. In comparison, noise generated during compaction of ready-mixed concrete can be significantly reduced, and the formwork 1 is not damaged. Further, since the cradle 12 is fixed and supported by the connecting members 11 for transmitting the reciprocating rotation of the support shaft 10, a trolley for guiding the cradle 12 in the reciprocating motion direction, There is no need to provide a guide rail or the like for mounting the cradle. Therefore, the driving device 8 of the mold 1 can be simplified.

FIG. 10 is a conceptual view showing a third embodiment of a mold driving device. The third embodiment is a driving device for the formwork 1 used in the step of putting ready-mixed concrete into the formwork 1 as in the second embodiment. The difference between the third embodiment and the second embodiment is that the driving means 15 of the driving device 14 of the form 1 is different from the driving means 9 of the driving device 8 of the form 1. . That is, the driving means 15 of the driving device 14 of the mold 1 transmits the rotational motion of the driving shaft 15 a such as a motor (not shown) via the link mechanism 17, so that the support shaft 16 of the driving means 15 is provided. Is reciprocated at a predetermined angle.

Therefore, when the link mechanism 17 of the drive means 15 is operated, the drive device 14 of the mold 1 reciprocates the support shaft 16 of the drive means 15 at a predetermined angle, and the connection members 11, 11 , The receiving table 12 is reciprocated below the support shaft 10 and at a predetermined angle. Note that the two-dot chain line in the figure shows a state in which the cradle 12 reciprocates clockwise and counterclockwise as in FIG. 9 (see FIG. 10).

In the third embodiment, the operation and effect of the driving device 14 of the mold 1 used in the step of putting the mold into the ready-mixed concrete mold 1 are almost the same as those of the second embodiment. .

FIG. 11 is a conceptual diagram showing a fourth embodiment of a mold driving device. The fourth embodiment is a driving device for the formwork 1 used in the step of putting ready-mixed concrete into the formwork 1 as in the second embodiment. The difference between the fourth embodiment and the second embodiment is that the position of the cradle 12 of the driving device 18 of the mold 1 is It is different from the position of the arrangement. That is, the driving means 9 of the form 1 driving device 18
The connecting members 11, 11 are attached to the support shaft 10a provided in a so as to extend above the support shaft 10a. A receiving base 12 is fixed to the upper part of the connecting members 11, 11.
Are attached, for example, so as to be detachably fixed.

Therefore, in the driving device 18 of the mold 1, the receiving base 12 is reciprocated at a predetermined angle above the support shaft 10a. Note that the two-dot chain line in the figure indicates a state where the cradle 12 has reciprocated clockwise and counterclockwise (see FIG. 11).

In the fourth embodiment, the operation and effect of the driving device 18 of the formwork 1 used in the step of putting it into the ready-mixed concrete formwork 1 are substantially the same as those of the second embodiment. .

Note that the present invention is not limited to the above-described embodiment, and various other modifications are possible. For example, in the third embodiment shown in FIG. 10, the connecting members 11, 11 for transmitting the reciprocating rotation of the support shaft 16 are provided.
Is extended above the support shaft 16 and the connecting member 11
The pedestal 12 to which the mold 1 is attached may be fixed to the upper part of the base. Further, the driving means 5, 9, 9a, 15
May not be driven by a motor, but may be driven by hydraulic pressure, pneumatic pressure, or the like. Also,
The driving means 9, 9a, 15 are provided with support shafts 10, 10a, 16
May be directly reciprocated at a predetermined angle.

Further, a cylinder device or the like for fixing the mold 1 is attached to the receiving bases 3 and 12, for example,
The form 1 flowing from the production line may be fixed by the cylinder device or the like.

[0033]

As will be apparent from the above description, the mold driving apparatus according to the present invention has the following effects.

According to the form driving apparatus of the first aspect, there is no large noise generated due to the vibration applied by the table vibrator or the like, and the amount of air inside the concrete product is not significantly reduced. The surface of the product can be smoothed. Further, the relative movement of the ready-mixed concrete put into the formwork can be performed smoothly.

According to the form driving apparatus described in claims 2 to 4, in addition to the effect of claim 1, the form driving apparatus can be simplified.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a mold driving device according to a first embodiment of the present invention.

FIG. 2 is a view showing a state in which a drive shaft has rotated 45 degrees in a counterclockwise direction from the state shown in FIG. 1;

FIG. 3 is a view showing a state in which a drive shaft has rotated 45 degrees in a counterclockwise direction from the state shown in FIG. 2;

FIG. 4 is a diagram showing a state in which the drive shaft has rotated 45 degrees in a counterclockwise direction from the state shown in FIG. 3;

FIG. 5 is a view showing a state in which the drive shaft has been rotated 45 degrees counterclockwise from the state shown in FIG. 4;

FIG. 6 is a view showing a state in which the drive shaft has rotated 45 degrees counterclockwise from the state shown in FIG. 5;

FIG. 7 is a view showing a state in which the drive shaft has been rotated 45 degrees counterclockwise from the state shown in FIG. 6;

FIG. 8 is a view showing a state in which the drive shaft has been rotated 45 degrees counterclockwise from the state shown in FIG. 7;

FIG. 9 is a conceptual diagram of a mold driving device according to a second embodiment of the present invention.

FIG. 10 is a conceptual diagram of a mold driving device according to a third embodiment of the present invention.

FIG. 11 is a conceptual diagram of a mold driving device according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Formwork 2, 8, 14, 18 Driving device 3, 12 Receiving stand 4 Support roller (support part) 5, 9, 9a, 15 Driving means 5c, 11 Connection member 10, 10a, 16 Support shaft

Claims (4)

(57) [Claims] 1. A driving device for a formwork used in a step of pouring ready-mixed concrete into a formwork, comprising: a driving means having a connecting member for converting the rotation of a drive shaft into a reciprocating motion; and the connecting member. And a support portion whose axial direction is parallel to the axial direction of the drive shaft and is rotatably mounted at a predetermined position, and the support portion is mounted on the support portion. The form is attached to the support, and the support is rotated up and down about the support by the rotation of the drive shaft via the connecting member, while the support is on the support. A form-driving device, which is moved and reciprocated. 2. A formwork driving device used in a step of putting ready-mixed concrete into a formwork, comprising: a support shaft reciprocatingly rotating at a predetermined angle; and a connecting member for transmitting reciprocal rotation of the support shaft. And a receiving stand fixed to the connecting member of the driving means, the form is attached to the receiving stand, and the reciprocating rotation of the support shaft causes the connecting member to pass through the connecting member. Wherein the receiving base reciprocates at a predetermined angle. 3. The apparatus according to claim 2, wherein the receiving base reciprocates below the support shaft. 4. The apparatus according to claim 2, wherein the receiving table reciprocates above the support shaft.