JP5466527B2 - Concrete placement equipment - Google Patents

Description

  The present invention relates to a concrete placing apparatus.

In the construction of fill dams, slip forms may be used when placing concrete on the slopes of structures.
According to this method, since the concrete can be compacted simultaneously with the progress of the machine, the installation and removal work of the mold can be omitted.

  Pavement of concrete on the slope using slip foam is tightened by supplying concrete to the slip foam by a chute arranged along the slope from the shoulder and moving the slip foam from the shoulder to the shoulder. It is common to perform compacting.

  Further, Patent Document 1 includes a distributor capable of discharging over the entire width of the slip foam, and supplies the concrete pumped by the concrete pump by the distributor, and also by the slip foam moving from the butt to the shoulder. A concrete placement device that performs compaction molding is disclosed.

JP 2000-120046 A

  However, when a chute arranged from the shoulder is used, the concrete may be separated due to abrupt drop of the concrete over a long distance in the chute.

  In addition, when concrete is pumped by a concrete pump through a distributor, there are cases in which it takes time to perform the construction by operating the distributor.

  Therefore, this invention makes it a subject to propose the concrete placement apparatus which enabled construction to be performed easily.

In order to solve the above-mentioned problems, a concrete placing apparatus according to the present invention includes a pair of rails, a slip foam horizontally mounted on the pair of rails, and a belt disposed in a lateral direction along the slip foam. A conveyor, a scraper movable in the conveying direction of the belt conveyor, a concrete pump, a hopper disposed above one end of the belt conveyor, and disposed between the concrete pump and the hopper The hopper receives the concrete pumped by the concrete pump through the extension pipe and puts it on the belt conveyor, and the extension pipe is connected to the slip foam. extending with the progress of the belt conveyor is installed above the front side of the slip-form The concrete placed on the upper surface is conveyed along the slip foam, and the scraper is arranged so as to intersect with the belt conveyor, and a chute provided on the front side of the guide unit. And the guide part guides the concrete transported by the belt conveyor to the chute part, and the chute part drops the concrete fed through the guide part before the slip foam. It is characterized by that.

According to such a concrete placing device, the concrete can be transported to an arbitrary position before the slip foam by the belt conveyor and the scraper, so that the construction can be easily performed.
Moreover, since it is not necessary to drop concrete over a long distance when conveying concrete, the effort which suppresses separation of concrete can also be skipped.

Further , it is not necessary to perform the extension pipe connection work accompanying the movement of the slip form, and the workability is excellent.

  The extending pipe is formed by connecting a plurality of straight pipes having bent pipes connected to both ends thereof, so that the bent pipe at the end of one straight pipe and the bent pipe at the end of the other straight pipe can be rotated. It is good to comprise in the pipe line which continued in the wave shape in the state before extending | stretching. In this case, it is preferable that wheels that travel on the rail are rotatably installed on the bent pipe. If it does in this way, since a transportation pipe (extension piping) moves along a rail and is automatically extended with progress of slip form, it is excellent in workability.

  In addition, the belt conveyor of the concrete placing device includes an endless belt, and the belt is fed from an upper conveyance portion and the other end portion that are sent from one end portion toward the other end portion. In the case of including a lower return portion that is returned in the direction of one end, a belt conveyor cleaning means for cleaning the lower return portion may be provided below the belt conveyor. If it does in this way, since the deposit | attachment to a belt conveyor is washed away automatically, high quality construction can be performed simply.

  In addition, if the slip foam is provided with a stopper that can be locked to the rail, the slip foam is fixed when the work is performed with the slip foam stopped, or when the slip foam is reversely moved when the work is performed on a slope. Can be prevented.

  In addition, the concrete placing device may include a work scaffold disposed along the front surface of the slip foam, or may include a finish scaffold disposed along the rear surface of the slip foam. Good.

  According to the concrete placing apparatus of the present invention, it is possible to easily perform the construction of a continuous concrete structure.

It is a perspective view showing typically a concrete placement device concerning an embodiment of the invention. It is a side view of the concrete placement apparatus. It is a top view of a concrete placement apparatus. It is a figure which shows the wheel and stopper of a slip form, Comprising: (a) is a top view, (b) is a side view. It is a figure which shows a belt conveyor washing | cleaning means. It is a figure which shows a scraper, Comprising: (a) is a top view, (b) is a side view. It is a figure which shows extending | stretching piping, Comprising: (a) is a side view, (b) is a front view.

In the present embodiment, a case where concrete is continuously placed on a slope using the concrete placing apparatus 1 will be described.
In the description, “front / rear” refers to the front side of the slip form in the direction of travel (the shoulder side) as “front” and the rear side in the direction of travel (the back side) as “back”.

  As shown in FIG. 1, the concrete placing device 1 includes a pair of rails 10, 10, a slip foam 20, a belt conveyor 30, a scraper 40, a concrete pump 50, and an extending pipe 60.

The rail 10 is laid on the slope to be constructed so that the longitudinal direction is the vertical direction (inclination direction).
The pair of rails 10 and 10 are laid in parallel at positions corresponding to both ends of the slip foam 20 and function as a travel path when the slip foam 20 moves.

  In this embodiment, although the rail 10 is fixed to the upper part of the formwork 11 with respect to the side surface of a concrete structure, the installation location of the rail 10 is not limited, For example, you may lay directly on the slope.

The rail 10 includes two vertical members 12 and 12 disposed along the traveling direction of the slip foam 20 (the slope direction of the slope), and a plurality of rails horizontally mounted on the two vertical members 12 and 12. It is formed in a ladder shape by the horizontal members 13, 13,.
The lateral member 13 of the present embodiment is configured such that a stopper 23 described later can be locked, and the attachment position is set according to the stop use of the slip form 20.

  In this embodiment, although the vertical member 12 and the horizontal member 13 are comprised by the steel pipe of a cross-sectional rectangular shape, the material which comprises the vertical member 12 and the horizontal member 13 is not limited. Further, the rail 10 does not necessarily have a ladder shape.

  The slip form 20 is laid on a pair of rails 10 and 10 laid on the slope, travels on the rails 10 and 10, and rises along the slope. Further, by using a scaffold 90 (see FIG. 2) provided on the slip form 20, it is possible to perform compaction molding and surface finishing of the concrete thrown into the front side in the traveling direction.

  As shown in FIG. 2, a skin plate 21 is installed on the lower surface of the slip foam 20. When the slip foam 20 passes over the concrete dropped on the front surface of the slip foam 20, the skin plate 21 becomes concrete. It is constructed so that the surface of the surface is flattened.

  As shown in FIG. 3, the slip foam 20 moves up the slope by winding a wire 24 a passed through a sheave 24 disposed at both ends of the slip foam 20 with a winch (not shown). In addition, the installation location of the winch may be either the shoulder or the buttocks, and the installation location is not limited.

  The slip form 20 includes wheels 22 for traveling on the rail 10 at both ends.

  As shown in FIG. 4 (a), a groove 22a corresponding to the width of the vertical member 12 of the rail 10 is formed in the wheel 22, and when the vertical member 12 is inserted into the groove 22a, the vehicle travels. Derailment is prevented. In addition, the shape, installation location, and number of wheels 22 are not limited and can be set as appropriate.

  As shown in FIGS. 4A and 4B, the slip form 20 includes a stopper 23 that can be locked to the lateral member 13 of the rail 10 in the vicinity of the wheel 22.

  The stopper 23 has an inclined surface 23a at the front end portion (front side in the traveling direction of the slip foam), and a hook-shaped locking portion 23b is formed at the rear end portion of the inclined surface 23a. Further, the stopper 23 is pivotally supported at the rear end portion so as to be rotatable in the vertical and horizontal directions.

  When the inclined surface 23 a comes into contact with the cross member 13 as the slip form 20 rises, the stopper 23 rises as the inclined surface 23 a slides along the cross member 13. When the inclined surface 23a passes the horizontal member 13, the stopper 20 falls and the locking portion 23b can be locked to the horizontal member 13.

The slip form 20 is prevented from being lowered (reversely fed) by the stopper 23 being locked to the lateral member 13 (preventing falling in an emergency). Note that when the slip form 20 is lowered after completion of concrete placement or repair, the stopper 23 is raised.
In addition, since the stopper 23 is configured to be capable of rotating left and right, even when the stopper 23 is inclined with respect to the lateral member 13, such as when the left and right heights of the slip form are different, it is possible to cope. It is configured to be able to.

The belt conveyor 30 is arrange | positioned along the slip foam 20, as shown in FIGS. That is, the belt conveyor 30 is disposed in the lateral direction of the slope (horizontal direction).
In the present embodiment, install the belt conveyor 30 above the front side of the slipform 20.

  As shown in FIG. 2, the belt conveyor 30 includes an endless belt. The upper side of the belt is an upper conveyance unit 31 that is sent from one end to the other end, and the lower side of the belt is the lower return unit that is sent back from the other end to the one end. 32.

  As shown in FIG. 1, a hopper 70 is installed above one end of the belt conveyor 20, and a belt conveyor cleaning means 80 is installed below the other end.

  The hopper 70 is a member that receives the concrete pressure-fed by the concrete pump 50 and inputs the concrete onto the upper conveyance unit 31 of the belt conveyor 30.

  The hopper 70 is a cylindrical member whose upper and lower surfaces are open, and is formed so that the lower cross-sectional area is smaller than the upper cross-sectional area, as shown in FIG. The lower opening is formed to have a width smaller than the width of the upper transport unit 31.

  The concrete pumped by the concrete pump 50 is thrown onto the belt conveyor 30 via the hopper 70, thereby preventing the concrete from being scattered around.

  As shown in FIG. 5, the belt conveyor cleaning means 80 has a water spray pipe 81 having a plurality of water spray holes 81a, 81a,..., And a wash for receiving the wash water sprayed from the water holes 81a, 81a,. A water receiver 82.

  The water sprinkling pipe 81 is installed so as to intersect the belt traveling direction of the belt conveyor 30, and the washing water w can be sprayed to the entire width direction of the lower return portion 32 of the belt conveyor 30. It is configured.

  The washing water receiver 82 is a quadrangular pyramid shaped member whose upper side (belt conveyor side) is open, and a drain pipe (not shown) is connected to the lower end. The width of the opening at the upper end is longer than the width of the watering range of the watering pipe 81 (the area where the watering holes 81a are formed), and is configured to collect all the wash water w sprayed from the watering pipe 81 Has been.

By spraying the cleaning water w from the sprinkling pipe 81 to the lower return portion 32, the concrete (mortar) and the like attached to the belt of the belt conveyor 30 is washed away.
Further, the cleaning water w used for cleaning the lower return portion 32 is collected through the cleaning water receiver 82 and drained by a drain pipe connected to the lower end of the cleaning water receiver 82.

  The sprinkling pipe 81 and the washing water receiver 82 are fixed to the belt conveyor 30 via a fixing member 83 fixed to the conveyor frame 33. In addition, the structure of the fixing member 83 and the fixing method of the belt conveyor washing | cleaning means 80 are not limited, What is necessary is just to perform suitably.

  The scraper 40 is a member that drops the concrete conveyed by the belt conveyor 30 onto the slope in front of the slip form 20.

  The scraper 40 is disposed on the upper surface of the belt conveyor 30 so that the scraper 40 can move along the conveying direction of the concrete by the belt conveyor 30.

  As shown in FIGS. 6A and 6B, the scraper 40 of the present embodiment includes a guide part 41 disposed so as to intersect with the upper transport part 31 of the belt conveyor 30, and a front side of the guide part 41 ( And a chute portion 42 disposed on the right side in FIG.

  The guide part 41 is a member that guides the concrete transported by the belt conveyor 30 to the chute part 42, and is disposed obliquely with respect to the belt conveyor 30 (upper transport part 31).

  The guide portion 41 is supported by the holding member 43. The holding member 43 is a member configured to be able to travel on the conveyor frame 33 that supports the belt of the belt conveyor 30, and includes wheels 44.

In this embodiment, a rope-like member (not shown) such as a chain or a wire is passed through the roller 33a installed on the conveyor frame 33 and the roller 43a installed on the holding member 43, and this rope-shaped member is operated. Thus, the scraper 40 is moved along the belt conveyor 30.
The configuration of the holding member 43 is not limited and can be appropriately configured.

  The chute part 42 is a groove-shaped or cylindrical member, and drops the concrete guided and fed by the guide part 41 onto the front surface of the slip form 20.

The chute portion 42 is installed across the work scaffold 91, and is configured to be able to drop concrete onto the front side of the work scaffold 91. In the present embodiment, the chute portion 42 is formed in two forks so that the concrete can be dropped also on the rear side of the work scaffold 91 as necessary.
In addition, the structure of the chute | shoot part 42 is not limited and can be set suitably.

The concrete pump 50 is a device that pumps concrete placed on the slope to the belt conveyor 30 via the extension pipe 60. In this embodiment, as shown in FIG. 1, the concrete pump 50 is arranged on a flat ground below the slope. Has been.
In addition, although the installation location of the concrete pump 50 is not limited, when placing the concrete conveyed by the mixer truck etc., it is desirable to arrange | position facing the work road. Further, the pumping capacity of the concrete pump 50 is not limited, and may be set as appropriate.

  As shown in FIG. 1, the extending pipe 60 is disposed between the concrete pump 50 and the hopper 70, and transports the concrete pumped by the concrete pump 50 to the belt conveyor 30 (the hopper 70).

  The extension pipe 60 is a transport pipe configured to extend as the slip foam 20 progresses.

  As shown in FIGS. 7A and 7B, the extending pipe 60 includes a plurality of straight pipes 61. Bent tubes 62 and 62 are connected to both ends of the straight tube 61. The extending pipe 60 is a continuous pipe having a wave shape in the state before stretching by rotatably connecting a bent pipe 62 at the end of one straight pipe 61 and a bent pipe 62 at the end of another straight pipe 61. It is configured on the road.

  The extending pipe 60 is configured to extend as the slip foam 20 progresses. That is, when the slip form 20 rises, the connecting portion between the bent pipes 62 rotates, and the internal angle α between the straight pipes 61 when the drawing pipe 60 is viewed from the side is extended. The extended pipe 60 has an inner angle α of 180 ° on the rail 10, is linear in a side view, and is arranged along the rail 10.

  A wheel 63 traveling on the rail 10 is rotatably installed on the bent pipe 62. Therefore, in the extending pipe 60, the straight pipe 61 and the bent pipe 62 travel on the rail 10 as the slip form 20 advances, and the extending pipe 60 is automatically piped on the slope.

  In addition, the extending | stretching piping 60 before extending | stretching is hold | maintained by the temporary placement frame 64 arrange | positioned on the flat ground under a slope. A rail 64 a is formed at the bottom of the temporary placement frame 64 and is configured to be able to travel by the wheels 63. The configuration of the temporary placement frame 64 is not limited.

  As shown in FIGS. 2 and 3, the concrete placement apparatus 1 is provided with a work scaffold 91 disposed along the front surface of the slip foam 20 and a rear surface of the slip foam 20 as a scaffold 90. And a finishing scaffold 92 and a management scaffold 93 disposed along the belt conveyor 30.

  The work scaffold 91 functions as a work space for compacting the concrete thrown into the front surface of the slip form 20 or moving the scraper 40 to a predetermined position.

  The finishing scaffold 92 is a scaffold for an operator to perform finishing processing (equalizing work) on the concrete surface formed into a predetermined shape by the slip form 20.

  The management scaffold 93 is a scaffold for managing the belt conveyor 30 and the like, and is arranged on the rear side (the buttock side) of the belt conveyor 30 in this embodiment.

  The concrete structure construction method using the concrete placing device 1 is a method in which the concrete pumped by the concrete pump 50 to the hopper 70 through the extension pipe 60 is used to convey the front surface of the slip foam 20 using the belt conveyor 30 and the scraper 40. And is compacted on the slope using the scaffold 90 of the slip form 20 or the like. In addition, reinforcing bars are arranged on the slope as needed.

  The concrete pressure-fed through the extending pipe 60 is transported along the slip foam 20 by the belt conveyor 30 and then dropped by the scraper 40 to an arbitrary position between the molds 11 (rails 10) at both ends.

  The concrete dropped on the front surface of the slip form 20 is roughly molded by the skin plate 21 after an operator on the work scaffold 91 is compacted by a rod-like vibrator or the like.

  The concrete surface after the slip foam 20 has passed is finished by a worker performing a finishing operation on the finishing scaffold 92.

  As mentioned above, according to the concrete placement apparatus 1 of this embodiment, when constructing a concrete structure having the same cross-sectional shape by placing concrete continuously on the slope, the construction can be easily performed. Is possible.

  Since the concrete pumped by the concrete pump 50 is conveyed along the slip foam 20 via the belt conveyor 30, it is possible to suppress separation of the concrete when the concrete is charged.

  The concrete conveyed by the belt conveyor 30 can be dropped to an arbitrary position by the scraper 40. Therefore, since it is not necessary to spread concrete, material separation can be suppressed and high-quality construction can be easily performed.

Since the extension pipe 60 automatically extends with the movement of the slip foam 20, troubles such as piping work for the extension pipe can be omitted.
Since the extending pipe 60 is provided with the traveling wheels 63 on the rail 10, the extending pipe 60 can be moved along the rail 10.

  Since the extension pipe 60 is folded into a corrugated shape with the straight pipe 61 standing in the temporary placement frame 64 before the extension, the extension pipe 60 is accommodated relatively compactly, and space saving such as a temporary placement space can be saved. Is possible.

  Since the rotating belt is automatically cleaned by the belt conveyor cleaning means 80, the mortar adhering to the belt is automatically washed out. Therefore, the labor required for the belt cleaning work can be omitted, and high-quality construction can be easily performed. Further, the cleaning water is prevented from splashing around by the cleaning water receiver 82.

Since the slip foam 20 is provided with the stopper 23, the slip foam 20 is not fed back.
In addition, since the stopper 23 is provided, it is not necessary to apply tension with a wire when the work is performed with the slip form 20 stopped, and the burden on the winch or the like can be reduced.

The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and it goes without saying that the above-described constituent elements can be appropriately changed without departing from the spirit of the present invention.
For example, although the said embodiment demonstrated the case where a concrete structure was formed in a slope using the concrete placement apparatus 1 of this invention, the use location of the concrete placement apparatus 1 is not limited.

  The work scaffold 91, the finishing scaffold 92, and the management scaffold 93 may be installed as necessary. For example, by using one of the scaffolds 90, the other scaffolds 90 may be omitted.

Also, concrete pump may be arranged to law shoulder.

  The configuration and installation location of the belt conveyor cleaning means are not limited to those described above, and may be set as appropriate. The belt conveyor cleaning means may be installed as necessary and may be omitted.

DESCRIPTION OF SYMBOLS 1 Concrete placement apparatus 10 Rail 20 Slip form 23 Stopper 30 Belt conveyor 31 Upper conveyance part 32 Lower return part 40 Scraper 50 Concrete pump 60 Stretching pipe 61 Straight pipe 62 Curved pipe 63 Wheel 70 Hopper 80 Belt conveyor cleaning means 90 Scaffold 91 Work scaffold 92 Finishing scaffold

Claims (6)

A pair of rails;
A slip foam horizontally mounted on the pair of rails;
A belt conveyor disposed laterally along the slope along the slip foam;
A scraper movable in the conveying direction of the belt conveyor;
And co-down cleats pump,
A hopper disposed above one end of the belt conveyor;
A concreting device and a stretching pipe disposed between the concrete pump and the hopper,
Before Symbol hopper was charged with receiving the pumped concrete through the stretching pipe by the concrete pump on the belt conveyor,
The extending pipe extends with the progress of the slip foam ,
The belt conveyor is installed on the upper front side of the slip foam, and conveys the concrete put on the upper surface along the slip foam,
The scraper includes a guide portion disposed so as to intersect the belt conveyor, and a chute portion disposed on the front side of the guide portion,
The guide part guides the concrete conveyed by the belt conveyor to the chute part,
The concrete placing device, wherein the chute part drops the concrete fed through the guide part before the slip form. The extending pipe is a plurality of straight pipes having bent pipes connected to both ends, and the bent pipe of one straight pipe and the bent pipe of the other straight pipe are rotatably connected to each other before the drawing. It is configured in a continuous pipeline in a wave shape in the state,
Wherein the bent pipe, concreting device according to claim 1, characterized in that the wheel traveling on the rail is installed rotatably. The belt conveyor includes an endless belt;
The belt includes an upper conveyance unit that is sent from one end toward the other end, and a lower return unit that is returned from the other end toward the one end. And
The concrete placing apparatus according to claim 1 , further comprising a belt conveyor cleaning means for cleaning the lower return portion below the belt conveyor. The concrete placing device according to any one of claims 1 to 3 , wherein the slip foam includes a stopper that can be locked to the rail. The concrete placement device according to any one of claims 1 to 4 , further comprising a work scaffold disposed along a front surface of the slip foam. The concrete placement device according to any one of claims 1 to 5 , further comprising a finishing scaffold disposed along a rear surface of the slip foam.

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