JPH0444809A - Apparatus for secondary casting of concrete in manufacturing of precast concrete sheet - Google Patents

Abstract

PURPOSE:To make supplementary casting smooth by providing a discharging path of a bucket and a vibration motor providing vibration to a damper and linking a damper-opening and closing means with a damper-opening and closing mechanism under a bucket-holding condition. CONSTITUTION:A vibration motor 4 is set on a discharging path 3 at an approxi mately central part on the bottom face of a bucket 2 so as to provide vibration through a supporting sheet 4a and a damper 5 opening and closing a discharging hole of the discharging path 3 is provided. When a hydraulic cylinder 39 for opening and closing the damper is actuated to shrink a rod 39a, a rod 7 is moved upward to pull up the damper 5. As the damper 5 is obliquely moved through damper arms 6 and 6 under a pulled-up condition to open the discharg ing hole of the bottom face sheet 3, supplementary casting is performed from the discharging path 3a through a shooter part 3b. As the vibration motor 4 set on the bottom face sheet 3 is connected (short circuit) with connectors 13 and 37 in its electric source circuit, the vibrational movement is provided to the bottom face sheet 3 to make flow-out condition of concrete in the dis charging path 3a smooth.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a secondary concrete pouring device installed in a production line for precast concrete plates.

(Prior art and its problems) Now, in the production of this type of precast concrete plate, etc., a formwork is surrounded by a surface plate that is transferred on a production line, and concrete is poured into this formwork. The manufacturing process was designed to finish the surface of the poured concrete. However, the above-mentioned concrete pouring alone cannot be used, for example, when the amount of concrete placed at a corner part of the formwork is insufficient, or when obtaining a precast concrete plate with protrusions on the surface. However, the need for a secondary concrete pouring system was inevitable.

Therefore, in view of the above-mentioned conventional problems, the present invention has been developed in cases where an insufficient amount of concrete is placed at corner portions within a formwork, or when obtaining a precast concrete plate with protrusions on the surface. It is an object of the present invention to provide a secondary concrete pouring device that can smoothly replenish concrete in the required area.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention is a secondary concrete pouring device installed in a precast concrete board production line, etc. The bucket arranged and filled with concrete is provided with a concrete discharge passage, a damper for the discharge passage, and a vibration motor that applies vibration to at least the discharge passage, and is arranged above the surface plate of the line. The bucket lifting means is provided with a pair of gripping arms that grip the bucket at opposing parts, and a damper opening/closing means at a part substantially orthogonal to the gripping arms, and the gripping arm has one side in which the bucket is gripped. A connector for short-circuiting the power supply circuit of the vibration motor is provided, and the damper opening/closing means is configured to cooperate with the damper opening/closing mechanism when the bucket is gripped.

(Function) In the above device, the bucket arranged along the production line is grasped and lifted by the grasping arm of the bucket lifting means, and the power supply circuit of the vibration motor is short-circuited in the grasped state. At the same time, by cooperating with the damper opening/closing means and the R-closing mechanism of the damper, the damper is opened without imparting vibration to the discharge path in the bucket, and concrete is poured in the area where supplementary concrete pouring is required. It is to be established.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
In the figure, in the manufacturing line for precast concrete plates (hereinafter simply referred to as PC plates) of this example, a large number of flat plate-shaped surface plates T are sequentially transferred at a predetermined speed. On this surface plate T, the P to be manufactured is
A formwork W framed so as to correspond to the C plate is mounted and fixed, and reinforcing bars and the like are positioned within this formwork W, and desired concrete is poured.

At the secondary concrete pouring site on this production line, a trolley 1 is installed parallel to the production line and carries in and out a bucket, which will be described later.

The bucket 2 is formed in the shape of a rectangular box with an opening at the top, and its bottom plate 3 is tilted downward to form a discharge path 3a for the concrete filled inside, and the bottom surface has a discharge path 3a at the center thereof. A vibration motor 4 is installed via a support plate 4a so as to apply vibration to the discharge passage 3, and an opening for opening and closing the discharge port of the discharge passage 3 is provided at the corner between the lower end of the discharge passage 3a and one side plate 2a. A damper 5 is installed, and both ends of the damper 5 are along the side plates 2b, 2b of the bucket 2, and one end of the damper arm 6.6 is supported on the side plate so as to be tiltable in the vertical direction.
is fixed to. Thereby, the damper 5 opens and closes the discharge port of the discharge passage 3 by vertically tilting the damper arm 6.6.

A rod 7 is supported by a guide WI8 so as to be vertically movable at approximately the center of one side plate 2a of the bucket 2, and an engagement pin 7a is attached to the upper end of the rod 7 in a lateral direction.
A bifurcated bracket 7 that is protruded and formed at the lower end.
b is a bracket 9 protruding from approximately the center of the damper 5;
and is connected via a link 10 and a support pin 10a.

Also, the other opposing side plate 2b of the bucket 2.

At the top of 2b, there is a pair of engagement 111 with two downward notches.
The engagement plate 12.12 with f11-11 is bulged out, -
A downward connector 13 on the motor side in the power circuit of the vibration motor 4 is attached to the bracket of the side plate 2b on the blade side. Incidentally, shooter parts 3b, 3b are attached to the front end of the bucket 2 3a for guiding the discharge of concrete.

A frame 14 is installed above the fixed position of the bucket 2 and the surface plate to be transferred to the site at the secondary concrete pouring site, and a frame 14 is installed on the frame 14 in a direction perpendicular to the transfer direction of the surface plate. Rails 14a are laid.

The base 15 of the secondary concrete pouring device is framed in a rectangular shape, and is placed on the rail 14a so that it can run along the rail 14a via wheels 16 provided at the lower part of both side edges thereof. On the upper surface, a rail 15a on which a trolley (to be described later) is mounted so as to be able to run is laid in the same direction as the transport direction of the surface plate, and a first driving motor 17 for driving the wheels 16 is mounted. ing.

A trolley 18 is placed on the rail 15a of the base 15 so as to be able to run on its own in the same direction as the transfer direction of the constant IT by driving a second drive motor 19 via wheels 18a, and is framed in a rectangular shape. Almost in the center is a large-diameter rotating outer cylinder 20.
is supported in a hanging manner so as to be able to rotate, and an elevating inner cylinder body 21 is suspended within this rotary outer cylinder body 20 so as to be movable in the vertical direction. A rectangular bucket lifting frame 22 is provided at the lower end of the cylindrical body 21.
are integrally formed in an overhanging manner. In addition, the rotating outer cylinder body 2
A drive motor 23 is installed at the upper end of the rotating outer cylindrical body 20 to wind up and unwind a connecting chain to be described later onto a drum 23a via a sprocket. 24 is fitted, and this worm wheel 24 is meshed with a worm 26 to a turning drive motor 25 installed on the truck 18. Thus, the rotating outer cylinder 20 is driven by the rotating drive motor 25 with respect to the cart 18, and the worm 26 and the worm wheel 2 are rotated.
It can be rotated as desired through engagement with 4.

A connecting chain 27 is wound around the drum 23a of the drive motor 23, and the connecting chain 27 is suspended within the rotary outer cylindrical body 20 and the elevating inner cylindrical body 21 via an upper sprocket 28. Its lower end is engaged with the bracket 29 of the bucket lifting frame 22 via a hook 30. Thus, the lifting inner cylinder body 21 together with the bucket lifting frame 22 is moved up and down via the connecting chain 27 by the hoisting or feeding operation of the drum 23a as the drive motor 23 is driven.

A support shaft 31 is rotatably supported approximately at the center of both sides of the bucket lifting frame 22, and two gripping arms 32 and 32 are integrally vertically disposed approximately at both ends of the support shaft 31. , on the inside of each of these gripping arms 32.32 is an engagement groove 1 in the engagement plate 12.12 of the bucket.
1 to 11 are provided with engaging pins 33 to 33 that protrude laterally and can be engaged from below. Also, a bracket 34 is located approximately at the center of the support shaft 31. ．． 34 is integrally protruded, and this bracket 34. ．． 34 is the bucket lifting frame 2
The ends of the rods 35a, 35a of the first and second gripping hydraulic cylinders 35, 35, which are disposed substantially horizontally on the holder 2, are connected to each other via a support pin. A connecting arm 36 with a side face shaped like a square is integrally installed on the above-mentioned support shaft 31, and a downward horizontal part of this connecting arm 36 is connected to the downward connector 13 on the side of the bucket 2. An upward connector 37 on the power supply side of the power supply circuit of the vibration motor 4 that can be short-circuited is attached.

Further, a plate-shaped bracket 38 is erected on one side end surface of the bucket lifting frame 22, and a hydraulic cylinder 39 for opening and closing the bumper is vertically installed on the bracket 38 so as to be tiltable. An engaging portion 41 is attached to which an engaging groove 40 that can be engaged with the engaging pin 7a of the rod 7 is formed laterally, and the hydraulic cylinder 39 for opening and closing the bumper is provided with an engaging portion 41. An auxiliary hydraulic cylinder 42 for tilting is provided.

The secondary concrete pouring device of this embodiment is constructed as described above, and its operation will be explained.

Now, the desired concrete is poured into the formwork W.
1T is placed on the production line (in the secondary pouring area of concrete, replenishment of concrete is placed on the protruding parts of the corners and surfaces where the amount of concrete placed in the formwork W is insufficient). It is something to do.

The bucket 2 filled with concrete is waited at a predetermined position by the trolley 1 arranged parallel to the production line, and the drive motor 23 is driven while the frame 22 for lifting the bucket is positioned above the trolley 1. When the connecting chain 27 is fed out by the drum 23a, the elevating inner cylinder body 21 is lowered relative to the rotating outer cylinder body 20 as the connecting chain 27 is fed out, and the bucket lifting frame 22 is also lowered at the same time. and is placed oppositely above the bucket 2.

When the gripping fluid pressure cylinder 35.35 is actuated to extend the rods 35a, 35a, the support shaft 31.31 is rotated clockwise and counterclockwise via the bracket 35.35. together with the gripping arm 32.
32 are tilted in the same direction to bring their respective engaging pins 33-33 into alignment with their respective engaging grooves 11 of both engaging plates 12,12 of the bucket 2.

In this case, the connecting arm 36 on the one support shaft 31 side is also tilted in the same direction so that its upward connector 37 faces the downward connector 13 on the bucket 2 side.

Then, the drive motor 23 is driven in the opposite direction to that described above, and the drum 23a slightly winds up the connecting chain 27, thereby raising the elevating inner cylinder 21 together with the bucket lifting frame 22 slightly. When the gripping arms 32, 32 each engaging bin 33-33 is
The connector 3 is inserted into each of the engagement grooves 11 of the engagement plates 12 and 12 of the connector arm 36, and
7 and the downward connector 13 on the bucket 2 side are matched and connected (short-circuited), and the lifting operation of the bucket 2 is started.

In synchronization with this, the hydraulic cylinder 39 for opening and closing the damper is slightly tilted by the operation of the auxiliary hydraulic cylinder 42, and the engaging groove 40 of the engaging portion 41 and the engaging pin 7a of the rod 7 on the bucket 2 side are connected. The engagement is made, and the hydraulic cylinder 39 for opening and closing the damper and the rod 7 serving as the damper opening and closing mechanism are connected.

Thus, the drive motor 23 is driven to drive the drum 23a.
The connecting chain 27 is wound up and the lifting inner station 2 is moved.
The bucket 2 is lifted from the trolley 1 to a predetermined position by the bucket lifting frame 22 that rises with the bucket lifting frame 22, and then the entire base 15 is moved relative to the frame 14 by driving the first drive motor 17 to move the bucket 2 in the transport direction of the surface plate T. The cart 18 is moved in a direction perpendicular to the base 15, and the entire cart 18 is moved to the second
Drive the drive motor 19 and keep it at 1! By traveling in the same direction as the transport direction of T and a combination of both traveling operations, the bucket 2 in the lifted state is moved to the replenishment concrete placement site.

Therefore, when the hydraulic cylinder 39 for opening and closing the damper is operated to retract the rod 39a, the rod 7 connected thereto moves upward and moves the damper 5 in an arched manner via the link 10, the support pin 10a, and the bracket 9. It works. As a result, the damper 5 is tilted by the lifting aid via the damper arm 6.6 to open the discharge port of the lower plate 3 in the bucket 2, so that the concrete in the bucket 2 is removed from the discharge path 3a of the lower plate 3. From there, additional casting is performed at the relevant site via the shooter portion 3b.

In this case, since both connectors 13 and 37 in the power supply circuit of the vibration motor 4 installed on the bottom plate 3 are connected (short-circuited) as described above, the vibration motor 4 is applied to the bottom plate 3. C, which smoothes the flow of concrete in the discharge path 3a of the lower plate 3 and prevents the concrete in the bucket 2 from solidifying.
be.

Thereafter, when the above-mentioned supplementary casting operation is completed, the fluid pressure cylinder 39 for opening and closing the damper is operated in the opposite manner to the above, and the rod 39a is extended to push down the damper 5, and the damper 5 moves the bottom plate. This is to close the discharge port 3, and the next replenishment is performed by moving the bucket 2 as described above.
When all the replenishment is completed, the bucket 2 is moved onto the original cart 1, the lifting inner cylinder 21 is lowered again, and both gripping arms 32, 32 are operated in the opposite manner to the above, to remove the bucket 2. Furthermore, the connection between the upward connector 37 of the connecting arm 36 and the downward connector 13 on the bucket 2 side is released, and the hydraulic cylinder 39 for opening and closing the damper and the rod 7 as the damper opening and closing mechanism are released. is what breaks the connection.

In addition, when changing the direction of the outlet of bucket 2,
The rotating outer cylindrical body 2 is driven by a rotating drive motor 25 through a worm 26 and a worm wheel 24 that meshes with the worm 26.
0 relative to the truck 18, the elevating inner cylinder 21 and the bucket lifting frame 22 are rotated integrally with the rotating outer cylinder 20. At the same time, the bucket 2, which is in a suspended state while being gripped by the gripping arms 32, 32 of the bucket lifting frame 22, is rotated to change the direction of the outlet of the discharge path 3a so as to arbitrarily correspond to the part to be refilled. It is.

(Effects of the Invention) As described above, the present invention is a secondary concrete pouring device installed in a precast concrete board manufacturing line, etc., which is installed along the manufacturing line and filled with concrete. The bucket is equipped with a concrete discharge path, a damper for the concrete discharge path, and a vibration motor that applies vibration to at least the discharge path, and the bucket lifting means disposed above the surface plate of the line is provided with the bucket. A pair of gripping arms gripping at opposing positions and a damper opening/closing means at a portion substantially perpendicular to the gripping arms, the gripping arm having a connector on one side that short-circuits the power supply circuit of the vibration motor when the bucket is gripped. The damper opening/closing means is configured to cooperate with the damper opening/closing mechanism when the bucket is gripped.
The buckets arranged along the production line are gripped and lifted by the gripping arms of the bucket lifting means, and in the gripped state, the power supply circuit of the vibration motor is short-circuited, and the damper opening/closing means and the damper opening/closing mechanism are By working together, it is possible to apply vibration to the discharge path in the bucket while opening the damper and pouring concrete into the area that requires supplementary concrete pouring.

This means that if the amount of concrete placed at a corner part in the formwork is insufficient, or if a precast concrete plate with protrusions on the surface is obtained, replenishment of concrete to the necessary part is necessary. Pouring can be carried out smoothly and easily.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, and FIG.
3 is a longitudinal sectional view showing the main body of the device, 4 is an enlarged front view showing the bucket in a lifted state, 5 is an enlarged side view, and 6 is a connector. FIG. 2...Bucket 4...Vibration motor 5...Damper 13...Connector 15...Base 18...Dolly 20...Rotating outer cylinder 21...Elevating inner cylinder 22 ...Bucket lifting frame 32...Gripping arm 35...Fluid pressure cylinder 37...Connector 39...Fluid pressure cylinder

Claims (1)

[Claims] A secondary concrete placing device installed on a precast concrete board production line, etc., which is installed along the production line and has a concrete-filled bucket with a concrete discharge path and a concrete discharge path. The bucket lifting means is equipped with a damper and a vibration motor that applies vibration to at least the discharge path, and the bucket lifting means is arranged above the surface plate of the line, and includes a pair of gripping arms that grip the bucket at opposing portions. A damper opening/closing means is provided at a portion substantially orthogonal to the arm, and the gripping arm is provided with a connector on one side to short-circuit the power circuit of the vibration motor when the bucket is gripped, and the damper opening/closing means is installed when the bucket is gripped. A secondary concrete pouring device for manufacturing a precast concrete board, characterized in that it is configured to cooperate with the opening/closing mechanism of the damper.