JPH0781400B2 - Automatic concrete spraying equipment for deep foundation works - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic concrete spraying device for deep foundation work which is a foundation work for constructing a foundation for constructing a steel tower, for example.

[0002]

2. Description of the Related Art Conventionally, in the case of deep foundation work, a worker has entered the deep foundation to spray concrete.

[0003]

However, in the prior art in which the worker enters deeply into the foundation, the worker is physically and physically
There was a problem of giving mental distress, a problem with danger, and a problem that work efficiency did not increase.

The present invention has been made in view of the above circumstances, and an object of the present invention is to perform concrete spraying work in the deep foundation mechanically and efficiently by operation on the ground. It is intended to provide an automatic concrete spraying device for construction work and the like.

[0005]

In order to achieve the above-mentioned object, the present invention secures a support base substantially horizontally in a deep foundation,
At least an elevating mechanism for a concrete spray nozzle and a swivel mechanism are attached to the support base, and the concrete spray nozzle is provided so as to be able to ascend and descend within a deep foundation through the elevating mechanism and swivel mechanism.

[0006]

In the present invention, when the apparatus is used, the support base is fixed to the upper part in the deep foundation substantially horizontally. Then,
A concrete spray nozzle provided on the support base through at least an elevating mechanism and a turning mechanism is connected to a fresh concrete supply source such as a concrete mixer through a hose. In addition, the support base is a shoe that extends the telescopic arm.
Since it is pressed against the inner wall and fixed, it is securely fixed.

Then, fresh concrete is supplied to the concrete spraying nozzle from the fresh concrete supply source, and the fresh concrete is sprayed from the concrete spraying nozzle toward the deep foundation side wall, and the concrete spraying nozzle is swung through the swivel mechanism, and is also moved up and down. The concrete spray nozzle is moved up and down through the mechanism.

Thus, it is not necessary for a worker to enter the deep foundation, and the concrete can be sprayed mechanically and efficiently in the deep foundation by operation on the ground.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a first embodiment of the present invention in use, and FIG. 2 is a plan view of FIG.

In the first embodiment shown in these figures, an upper support base 1 which is a support base for various members is provided. The upper support base 1 is provided with a telescopic arm 2 and a lifting guide mast 5.

In this embodiment, as shown in FIG. 2, four telescopic arms 2 are provided in a cross shape at intervals of 90 ° in the circumferential direction. A shoe 3 that is in contact with the deep side wall A is attached to the end of each telescopic arm 2. Each telescopic arm 2 is connected to a first fluid pressure cylinder 4, and when the telescopic arm 2 is telescopically operated by the first fluid pressure cylinder 4 and extends, the shoe 3 is pressed against the deep foundation side wall A to support the upper portion. It is designed to support the gantry 1.

The elevating guide mast 5 is provided substantially vertically at the center of the upper support frame 1. A centering device 6 is attached to the lower end portion of the elevating guide mast 5, and by inserting the centering device 6 into the deep foundation bottom wall B, the entire concrete automatic spraying device is placed at the center of the deep foundation. It can be installed. The elevating guide mast 5 is provided with a swivel frame 7 and a concrete spray nozzle support stand 12.

The turning frame 7 is connected to a turning mechanism. This turning mechanism has a motor 8 attached to the upper support frame 1, a pinion 9 attached to a rotating shaft of the motor 8, and a gear 10 attached to the turning frame 7 and meshed with the pinion 9. The pinion 9 is driven by driving the motor 8.
Further, the revolving frame 7 is revolved around the elevating guide mast 5 via the gear 10.

A second fluid pressure cylinder 11, which is a lifting mechanism, is supported on the revolving frame 7. A plurality of the second fluid pressure cylinders 11, such as two cylinders, are provided at equal intervals in the circumferential direction. A concrete spray nozzle support stand 12 is connected to the tip of the piston rod fitted into the second fluid pressure cylinder 11.

Support stand 1 for the concrete spray nozzle
2 is rotated together with the revolving frame 7 and is vertically moved along the vertical guide mast 5 by the second fluid pressure cylinder 11 which is a vertical moving mechanism. The concrete spray nozzle support frame 12 is provided with third and fourth fluid pressure cylinders 14 and 15 for the concrete spray nozzles. A concrete spray nozzle 16 is attached to the tip of the piston rod fitted into the third fluid pressure cylinder 14.

The third fluid pressure cylinder 14 is connected to a bracket 13 suspended from a concrete spray nozzle support base 12 so as to be tiltable by a pin. The third fluid pressure cylinder 14 is provided with a concrete spray nozzle 16
By advancing and retracting in the horizontal direction, the distance of the concrete spray nozzle 16 to the deep foundation side wall A is adjusted.

The fourth fluid pressure cylinder 15 tilts the third fluid pressure cylinder 14 to adjust the spraying angle of the concrete spraying nozzle 16 with respect to the deep foundation side wall A via the third fluid pressure cylinder 14. It has become.

The concrete spray nozzle 16 is connected to a swivel joint 18 via a hose 17. The swivel joint 18 is connected to a fresh concrete supply source (not shown) such as a concrete mixer via a hose (not shown).

A current collector 19 for supplying electric power to each driving device is attached to the lower part of the upper support frame 1, and a suspension bracket 20 is attached to the upper part of the upper support frame 1.

Further, a control panel (not shown) for controlling each part of the automatic concrete spraying device is installed on the ground.

The automatic concrete spraying device of the first embodiment is suspended by a construction machine such as a crane via a suspension bracket 20 and carried into a deep foundation.

Next, the centering device 6 attached to the lower end portion of the elevating guide mast 5 is arranged at substantially the center of the deep foundation,
This is inserted into the deep foundation bottom wall B, and the whole concrete automatic spraying device is installed at almost the center of the deep foundation.

Next, the telescopic arm 2 is extended by the first fluid pressure cylinder 4, the shoe 3 provided on the telescopic arm 2 is pressed against the deep foundation side wall A, and the upper support base 1 is fixed in the deep foundation.

A raw concrete supply source such as a concrete mixer is connected to a swivel joint 18 with a hose (not shown), and the raw concrete supply source and the concrete spray nozzle 16 are connected via the hose, the swivel joint 18 and the hose 17. Connect.

Further, in the initial stage, the second lifting mechanism is used.
The concrete spray nozzle 16 is raised by the fluid pressure cylinder 11 via the concrete spray nozzle support base 12. Further, by the third fluid pressure cylinder 14,
The concrete spray nozzle 16 is adjusted to an appropriate distance with respect to the deep foundation side wall A. In a normal state, the fourth fluid pressure cylinder 15 adjusts the concrete spray nozzle 16 so that it can spray horizontally.

As described above, the concrete spray nozzle 1
After adjusting 6, the hose from the fresh concrete supply source,
The concrete 8 is supplied to the concrete spray nozzle 16 through the swivel joint 18 and the hose 17, and the concrete spray nozzle 16 blows the fresh concrete toward the deep side wall A to rotate the motor 8 of the rotating mechanism.
Is driven to rotate the revolving frame 7 around the elevating guide mast 5 via the pinion 9 and the gear 10, and the revolving frame 7, the second fluid pressure cylinder 11, the concrete spray nozzle support frame 12, the bracket 13 and The concrete spray nozzle 16 is swung through the third fluid pressure cylinder 14 to spray fresh concrete C onto the deep side wall A as shown in FIG.

After rotating the concrete spray nozzle 16 and spraying the fresh concrete C on the deep foundation side wall A to a predetermined thickness, while spraying the fresh concrete from the concrete spray nozzle 16, a second fluid pressure cylinder which is an elevating mechanism. 11 is operated to the descending side, the concrete spray nozzle support stand 12 is lowered by one pitch along the elevating guide mast 5, and the concrete spray nozzle support stand 12, the bracket 13 and the third fluid pressure cylinder 14 are used to convey the concrete. The spray nozzle 16 is lowered, and fresh concrete C is sprayed onto the deep foundation side wall A in the same manner as described above.

By the above operation, it is not necessary for a worker to enter the deep foundation, and it is possible to spray the ready-mixed concrete C onto the deep foundation side wall A mechanically and efficiently by the operation on the ground.

Next, for example, the concrete spray nozzle 16
When the concrete is not sprayed onto the lower end of the deep foundation side wall A even if the concrete spraying nozzle 16 horizontally sprays it in a state where it is lowered to the lower limit position, the fourth fluid pressure cylinder 15 is used. Operate, Figure 1
As indicated by a phantom line, the third fluid pressure cylinder 14 is tilted, and the concrete spray nozzle 16 is tilted downward and swung to spray fresh concrete. Also, with the concrete spray nozzle 16 raised to the upper limit position,
When the fresh concrete is sprayed on the deep foundation side wall A above the horizontal surface, the concrete spray nozzle 16 is tilted upward and swung by the fourth fluid pressure cylinder 15.

As a result, the concrete spray nozzle 16
It is possible to spray fresh concrete to a place that cannot be reached by simply spraying it horizontally, and the spraying range can be expanded.

When the automatic concrete spraying device is removed after the spraying of the fresh concrete C onto the deep foundation side wall A is finished,
The hose between the raw concrete source and the swivel joint 18 is removed, and it is provided to a construction machine such as a crane via a suspension bracket 20, and then the first fluid pressure cylinder 4 is operated to the reduction side, and the telescopic arm 2 is reduced. After that, it is hoisted by the construction machine and lifted from inside the deep foundation.

Next, FIG. 3 is a front view of the second embodiment of the present invention in use. In the second embodiment, a first arm 21 for a concrete spray nozzle, which is formed in a substantially dogleg shape, is pin-connected to the lower portion of the gear 10 of the turning mechanism. A second arm 22 for a concrete spray nozzle is pin-coupled to the lower end of the first arm 21 so that the second arm 22 can move in a lever manner. A concrete spray nozzle 16 is provided at the tip of the second arm 22.

A piston rod of a fluid pressure cylinder 23 attached to the lower portion of the gear 10 is connected to the first arm 21. Further, the second arm 22 has a fluid pressure cylinder 24 attached to the first arm 21.
The piston rod of is connected.

The fluid pressure cylinder 23 operates the first arm 21 in the direction of arrow a or b, and the fluid pressure cylinder 24 operates the second arm 22 in the direction of arrow c or d. The vertical position, the distance to the deep foundation side wall A, and the spray angle are adjusted.

The other structure and operation of the second embodiment are the same as those of the first embodiment.

Next, FIG. 4 is a partially cutaway front view showing a third embodiment of the present invention, and FIG. 5 is a perspective view of a part of the casing of the embodiment shown in FIG. In the third embodiment, the elevating mechanism for the concrete spray nozzle is constructed as follows.

That is, in the lower part of the gear 10 of the turning mechanism,
A cylindrical casing 30 is attached. Inside the casing 30, a screw rod 31 is rotatably supported by a bearing 32. As shown in FIG. 5, the casing 30 has a long groove 3 which is long in the axial direction.
6 is formed. The screw rod 31 is connected to a reversible motor 33. A nut 34 is screwed onto the screw rod 31. This nut 3
An elevating plate 35 for the concrete spray nozzle is attached to 4. The elevating plate 35 is projected to the outside of the casing 30 through the long groove 36. The concrete spray nozzle 16 is attached to the protruding end of the lift plate 35.
Is installed.

In the third embodiment, when the reversible motor 33 is rotated in the forward direction, for example, the screw rod 31 and the nut 34 cause the elevating plate 35 to descend along the long groove 36 and the concrete spray nozzle 16 to descend. Let
Further, when the reversible motor 33 is rotated in the opposite direction, the elevating plate 35 rises along the long groove 36 by the screw action of the screw rod 31 and the nut 34, and the concrete spray nozzle 16 is raised.

In the third embodiment, the third and fourth fluid pressure cylinders 14 and 15 as shown in the first embodiment are attached to the elevating plate 35 for the concrete spray nozzle.
The distance and the spray angle of the concrete spray nozzle 16 with respect to the deep side wall A may be adjustable.

The other structure and operation of the third embodiment are the same as those of the first embodiment.

FIG. 6 is a front view of the fourth embodiment of the present invention in use. In the fourth embodiment, the elevating mechanism for the concrete spray nozzle is constructed as follows.

That is, in the lower part of the gear 10 of the turning mechanism,
A screw rod drive device 40 with a built-in reversible motor is attached. A horizontally long screw rod 41 is rotatably supported by the screw rod drive device 40. A right-hand thread is formed on one half of the axial direction of the screw rod 41, and a left-hand thread is formed on the other half. On the screw rod 41, a pantograph-type link mechanism in which X-shaped first and second links 42 and 43 are combined is suspended. The first link 4
Nuts 44a and 44b are provided on the upper end of the screw rod 2, and these nuts 44a and 44b are screwed to one half and the other half of the screw rod 41. The first
The lower end of the link 42 and the upper end of the second link 43 are pin-connected. At the lower end of the second link 43,
Sliders 45a and 45b are provided, and a support bar 46 for a concrete spray nozzle is laid across both sliders 45a and 45b. The concrete spray nozzle 16 is attached to one end of the support bar 46.

In the fourth embodiment, when the reversible motor in the screw rod drive device 40 is rotated in the forward direction, for example, the screw rod 41 is rotated in the forward direction, and a right-hand screw of one half of the screw rod 41 and other The nuts 44a and 44b move in a direction in which they approach each other in the axial direction due to the screw action of the left half screw and the nuts 44a and 44b screwed together. As a result, the first and second links 42, 43 extend downward as shown by phantom lines in FIG. 6, and the support bar 46 descends accordingly, causing the concrete spray nozzle 16 to descend. Further, when the reversible motor is rotated in the reverse direction, the screw rod 41 rotates in the reverse direction, and the screw thread of the one half portion of the screw rod 41 and the left screw of the other half portion and the screw action of the nuts 44a and 44b. , The nuts 44a, 44b move in the axial direction away from each other, whereby the first and second links 4
2, 43 contract upward, the support bar 46 rises, and the concrete spray nozzle 16 rises.

In the fourth embodiment, similarly to the first embodiment shown in FIG. 1, the third and fourth fluid pressure cylinders 14 and 15 are attached to the support bar 46 and the concrete spray nozzle 16 for the deep foundation side wall A is provided. The distance and the spray angle may be adjustable.

The other structure and operation of the fourth embodiment are the same as those of the first embodiment.

Further, in each of the above-described embodiments of the present invention, a climbing device may be attached to the upper support base 1 and the entire device may be moved in the vertical direction.

In the present invention, the elevating mechanism and the turning mechanism of the concrete spray nozzle 16 are not limited to those in the above-mentioned embodiment, but may be any structure capable of performing a desired operation.

[0048]

As described above, according to the present invention, the supporting base is fixed substantially horizontally in the deep foundation, and the elevating mechanism and the turning mechanism for at least the concrete spray nozzle are attached to the supporting base. Since the concrete spray nozzle can be raised and lowered and swung in the deep foundation via the swivel mechanism, there is no need for a worker to enter the deep foundation, and the spraying of fresh concrete to the deep sidewall can be operated on the ground. This has the effect that it can be performed mechanically and efficiently. In addition, the support base extends the telescopic arm to attach the shoe to the inner wall.
Since it is pressed and fixed, it is fixed securely
can do.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention and is a front view of a usage state.

FIG. 2 is a plan view of FIG.

FIG. 3 is a front view of a second embodiment of the present invention in a use state.

FIG. 4 is a front view of a third embodiment of the present invention in a use state.

5 is a perspective view of a part of the casing in the embodiment shown in FIG.

FIG. 6 is a front view of a fourth embodiment of the present invention in a use state.

[Explanation of symbols]

A Deep foundation side wall C Raw concrete 1 Upper support cradle 2 Telescopic arm 5 Elevating guide mast 7 Revolving frame 8 Motor of revolving mechanism 9 Pinion of revolving mechanism 10 Gear of revolving mechanism 11 Second fluid pressure cylinder 12 concrete as lifting mechanism Support base for spray nozzle 14 Third fluid pressure cylinder for adjusting distance of concrete spray nozzle 15 Fourth fluid cylinder for adjusting spray angle of concrete spray nozzle 16 Concrete spray nozzle 21 First arm for adjusting position of concrete spray nozzle 22 Second Arm for Position Adjustment of Concrete Spraying Nozzle 23 Fluid Cylinder for Operating 1st Arm 24 Fluid Cylinder for Operating 2nd Arm 30 Casing for Lifting Mechanism of Concrete Spraying Nozzle 31 Screw Rod of Lifting Mechanism 33 Lifting Mechanism Reversible motor 3 Nut for lifting mechanism 35 Lifting plate for concrete spraying nozzle 40 Screw rod driving device for lifting mechanism for concrete spraying nozzle 41 Screw rod for lifting mechanism 42 First link for lifting mechanism 43 Second link for lifting mechanism 44a Nut for lifting mechanism 44b Lifting Mechanism nut 46 Support bar for concrete spray nozzle

Front Page Continuation (72) Inventor Hideo Imamura 1-24-4 Shinkawa, Chuo-ku, Tokyo Within Otoyo Construction Co., Ltd. (56) Reference JP-A-61-257578 (JP, A) (JP, U)

Claims (1)

[Claims] 1. A shoe is attached to an end of the deep foundation .
The support frame is fixed almost horizontally via an extendable telescopic arm, and at least an elevating mechanism for the concrete spray nozzle and a swivel mechanism are attached to this support frame, and the concrete spray nozzle is deepened through the elevator mechanism and swivel mechanism. An automatic concrete spraying device for deep foundation work, etc., which is installed so that it can be raised and lowered and turned inside the foundation.