JPS61130561A - Concrete casting method and apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention introduces concrete to an orbiting conveyor that goes around a tower, and uses this orbiting conveyor to transport concrete to the base end position of the pouring conveyor on the outer periphery of the tower. By circulating the concrete and transferring the concrete to the pouring conveyor from here, the concrete can be reliably transferred to the pouring conveyor no matter what angle the pouring conveyor is turning, and thus it can be efficiently applied to a wide range of places with different heights. This article relates to a concrete pouring method and equipment for pouring concrete.

[Conventional technology]

As a conventional concrete placing device, for example,
There are those described in JP-A No. 0-16324, JP-A-54-124525, and the like. The former is a type in which the tip of the conveyor extending from the concrete mixer truck faces the base end of the discharge conveyor that is hinged to the tower so that it can be lifted up and down. Concrete is supplied from the mixer truck via a conveyor to a discharge conveyor, and the concrete is poured at a predetermined location by the discharge conveyor.

The latter is of a type in which the tip of a supply conveyor faces the base end of a discharge conveyor that is hinged to the tower so that it can be elevated and rotated, and the concrete transferred to the discharge conveyor via the supply conveyor is transferred to the discharge conveyor. , and then placed in a predetermined location by a discharge conveyor.

(Problem to be solved by the invention) However, in the former case, in order to turn the discharge conveyor, it is necessary to also turn the tower and jib that supports it, and to do so, the vehicle It is necessary to change the direction of the concrete mixer truck, and when the discharge conveyor is turned, its base end position will also be turned5, so the conveyor from the concrete mixer truck, whose tip is facing this, will also have to be moved. There is a problem that the smoothness of the pouring work is reduced.

Further, in the latter case, since the discharge conveyor does not have a lifting function, there is a problem in that it is difficult to adequately cope with changes in elevation of the concrete placement position.

[Means for solving problems]

The present invention is a concrete pouring method and apparatus for solving the above-mentioned problems. a step of introducing concrete into the tower, a step of moving the concrete around the tower by an orbiting conveyor, and a step of moving the concrete around the tower by a circulating conveyor, and placing the concrete at the base end of a pouring conveyor that can be turned around the tower and can be lifted up and down at the turning position of the pouring conveyor. , a step of transferring the concrete of the orbiting conveyor, a step of pouring concrete at a predetermined position from the concrete dropping part of the pouring conveyor, and a step of transferring the concrete to a predetermined position from the concrete dropping portion of the pouring conveyor, and integrating the tip of the introduction conveyor, the base end of the orbiting conveyor and the pouring conveyor into the tower. and a step of raising and lowering it along the line.

In addition, this concrete placing equipment includes a tower to be erected, an elevating body that goes up and down along the tower, a circulating conveyor that is supported by the elevating body and rotates around the tower, and a circulating conveyor whose tip is supported by the elevating body and which rotates around the tower. An introduction conveyor that introduces concrete into the circulating conveyor; a pouring conveyor that is supported by an elevating body so that it can be elevated and rotated and whose base end faces the vicinity of the circulating conveyor; and a pouring conveyor that transfers concrete from the circulating conveyor to the pouring conveyor. It is equipped with a transfer mechanism.

[Effect]

By adjusting the height position of the elevating body in accordance with the height position at which concrete is to be poured, the tip position of the introduction conveyor, the base end position of the pouring conveyor, and the height of the orbiting conveyor are automatically determined. Concrete introduced from the inlet conveyor is fed to an orbiting conveyor and transported in a rotational direction around the tower. Since the base end of the pouring conveyor faces any position on the circumferential conveyor no matter which rotation position on the outer periphery of the tower, the concrete is transferred from the circumferential conveyor to the pouring conveyor by the transfer mechanism at that position. By letting
Concrete is delivered smoothly.

Concrete can be delivered from the orbiting conveyor from the entire circumference of the orbiting conveyor except for the position where the tip of the introducing conveyor faces, so the turning angle of the pouring conveyor can be increased. In addition, since an orbiting conveyor is interposed between the introduction conveyor and the pouring conveyor, and the introduction and pouring conveyors are not directly connected, the tip position of the introducing conveyor is always the same regardless of the turning position of the pouring conveyor. be able to.

〔Example〕

1 to 8 show examples in which the present invention is applied to construction of a spillway of a fill dam.

That is, the tower 1 is erected on the ground, and the elevating body 2 is attached to the tower 1 so that it can be raised and lowered. The elevating body 2 is roughly divided into an elevating base 3, an elevating main body 4, and a rotating portion 5, all of which fit onto the outer periphery of the tower 1. The elevating base 3 and the elevating main body 4 have a structure that prevents the tower 1 from rotating, and the space between them 3.4 is connected by a jack cylinder 6 for driving the elevating and lowering.

The lifting base 3 and the lifting main body 4 each have a ram 7 that projects inward.
8, and each ram 7.8 has a respective elevated base 3.
Alternatively, it is driven forward and backward by a cylinder 9.10 supported by the elevating main body 4. These rams 7.8 are inserted into engagement holes 11.12 formed in the tower 1 so that the tower 1 supports the load of the elevator 2.

A rotating part 5 is rotatably mounted on the upper end of the lifting main body 4 via a bearing 13, the outer ring of the bearing 13 is fixed to the lifting main body 4, and the inner ring is fixed to the rotating part 5. A gear 14 is formed on the outer circumference of the outer ring of the bearing 13, and a pinion 15 meshes with the gear 14. shaft 16 of pinion 15
is driven by a motor 17 with a speed reducer, which is pivotally supported by the revolving part 5 and fixed to the revolving part 5.

A flange 18 is fixed to the outer periphery of the lifting main body 4, and a roller I9 is rotatably supported on the upper surface of the flange 18.
A circulating conveyor 20 is placed on the upper surface of the roller 19 so as to circulate around the outside of the tower 1. The orbiting conveyor 20 has a disc 21 made of a double plate and a shelf 22 made of a double plate erected inside the disc 21, and an internal gear is formed along the inner periphery of the orbiting conveyor 20. A chino 23 is fixed, and a drive gear 24 that meshes with this chino 23 is
It is designed to be driven by a motor 25 with a speed reducer supported by the lifting main body 4. The upper plate forming the disc 21 is a rubber plate. Further, rollers 26 supported by the flange 18 are in contact with the inner periphery of the orbiting conveyor 20, and center the orbiting conveyor 20.

An arm 27 is protruded from the outer periphery of the lifting body 4, and the tip of an introduction conveyor 28 is pivotally connected to a stand fixed to this arm by arms 29, so that the introduction conveyor 28 can be raised and lowered relative to the lifting body 2. It has become. The tip of the introduction conveyor 28 faces the upper surface of the orbiting conveyor 20, so that the concrete transferred by the introduction conveyor 28 is introduced onto the upper surface of the orbiting conveyor 20. 39 is a concrete guide.

A frame 30 is fixed to the rotating part 5 facing downward, and the base end of the placing conveyor 31 is attached to the pin 32 on this frame 30.
The pouring conveyor 31 is pivotably mounted to enable the pouring conveyor 31 to be raised and lowered. The base end of the placing conveyor 31 is located below the circulating conveyor 20, and is located between the circulating conveyor 20 and the placing conveyor 31.
A transfer mechanism 33 is interposed between the two.

The transfer mechanism 33 is supported by a bracket 34 installed between two frames 30 extending downward from the rotating section 5. This transfer mechanism 33 is connected to the disc 21 of the orbiting conveyor 20.
It is provided with a scraping member 35 whose lower end is in sliding contact with the upper surface and scrapes off the concrete 1 on the disc 21, and a chute 36 which guides the concrete scraped off by the scraping member 35 to the pouring conveyor 31. The scraping member 35 and the chute 36 are configured so that the amount, direction, etc. of concrete to be scraped off or guided to fall, although not particularly shown, can be adjusted.

The pouring conveyor 31 consists of a first conveyor 37 and a second conveyor 38 , and the base end of the first conveyor 37 is pivotally attached to the frame 30 of the turning section 5 . Second conveyor 38
is supported on the lower side of the first conveyor 37 so as to be movable forward and backward, making the placing conveyor 31 extendable and retractable. The first conveyor 37 has a conveyor belt stretched over a truss-type boom, and the upper end of the conveyor belt is connected to the revolving part 5 via the upper ends of two wooden main pillars 39 and 40 erected in the revolving part 5. It is connected by a wire rope 43 to a hoisting drive device 42 of a pivoted support column 41 .

The second conveyor 38 is supported by a bracket 44 extending downwardly and fixed to the 7'-m of the first conveyor 37, and rollers 45 at the end of the second conveyor 38 are connected to the first conveyor 37.
The second conveyor 38 is removably supported by the boom of No.
is configured to be able to move forward and backward with respect to the first conveyor 37. Second
The conveyor 38 includes a boom supported by the first conveyor 37, a conveyor belt 46 installed above the boom, and concrete dropping parts 47 located at both ends of the conveyor belt 46, respectively.

Chutees 48 for pouring concrete are suspended from the concrete dropping portions 47, respectively. A wire row 149 for driving a hoist is installed under the second conveyor 38 , and a hoist 50 movable along the boom of the second conveyor 38 is connected to this wire row 149 . 51 is a motor for moving the hoist 50, 52 is a conveyor belt 46
A reversible motor for driving, 53 is a power transmission cable for driving the hoist 50.

The tip of the second conveyor 38 passes through the upper end of the main column 39.40,
A wire rope 5 is attached to a weight 54 that moves up and down along the main pillar 39.
5, and the weight 54 moves up and down in response to the expansion and contraction of the placing conveyor 31 as the second conveyor 38 moves back and forth. Furthermore, an expansion/contraction motor 56 for the pouring conveyor 31 is installed on the top surface of the first conveyor 37.
A wire rope 57 installed via the base end, upper part, tip end, and lower part of the first conveyor 37 is driven forward and backward by a telescopic motor 56.
7 is fixed to the extension part 38a of the second conveyor 38.

Further, as shown in FIGS. 2 and 4, a frame 58 supported by the lower flange 18 of the circulating conveyor 20 is suspended from the rotating portion 5, and an arm 59 is attached to the tip of the frame 58.
extends upward, and a circle 60 is supported at the upper end of the arm 59 to prevent the reeds outside the circulating conveyor 20 from falling. As shown in FIG. 7, a rubber plate 61 for preventing concrete leakage is attached between the circle 60 and the disc 21. The arm 59 is located below the disk 21 and supports the circle 60.
Since the upper part of 1 is almost free, the introduction conveyor 28
There is no risk of any hindrance to the introduction of concrete.

Note that the circle 60 is arranged around the entire circumference of the circulating conveyor 20 except for the portion where the transfer mechanism 33 faces.

Thus, the circle 60, the transfer mechanism 33, and the pouring conveyor 3I are configured to rotate integrally with the rotating section 5 with respect to the lifting main body 4 and the tower 1. An electric machine room 61 and a driver's cab 62 are installed above the rotating part 5.

The introduction conveyor 28 is constructed by connecting a plurality of conveyors as shown in FIG. This connection is made so that the connected state of each conveyor is maintained even if the height position of the tip of the introduction conveyor 28 changes. Introduction conveyor 28
The base end of is connected to a concrete manufacturing equipment W63. This device 63 consists of a mixer of aggregate, cement, water, etc., and has a known structure.

Next, the operation of this embodiment will be explained.

First, when the elevating body 2 moves up and down with respect to the tower 1, the elevating base 3 and the elevating body 4 are moved in a manner similar to the relationship between the head and tail of an inchworm, due to the expansion and contraction of the cylinder cylinder 6 and the movement of the rams 7 and 8. This is done by alternately rising and falling.

The principle of such a lifting mechanism is well known in tower release lanes and the like, and therefore will not be described in detail.

Note that the elevating main body 4 and the rotating section 5 naturally move up and down together, and the introduction conveyor 28 supported by the rotating section 5
Tip, base end of pouring conveyor 31, transfer mechanism 33. Jade pillar 39
, 40, etc. are also the same.

As the elevating body 2 moves up and down, the tip of the introduction conveyor 2 also moves up and down, causing the angle of the introduction conveyor 28 to change. The concrete sent by the introduction conveyor 28 is guided from its tip by a guide 39 and introduced onto the disc 2I of the circulating conveyor 20.

The circulating conveyor 20 has a drive gear 2 driven by a motor 25.
4 and rotates around the roller 19. Therefore, the concrete on the disc 21 moves in a circular orbit while remaining on the disc 21. When it reaches the transfer mechanism 33, it is scraped off from the top of the disc 21 by the scraping member 35, guided to the outside of the disc 21, and dropped into the chute 36. The concrete that has fallen into the chute 36 is guided by the chute 36 and supplied to the upper surface of the pouring conveyor 31. The circulating conveyor 20 that has passed through the transfer mechanism 33 further moves in a circular orbit and reaches below the tip of the introduction conveyor 28, where it receives the supply of concrete 4 as described above. During the rotation of the circulating conveyor 20, the rollers 19 and 26
The trajectory is maintained by this.

Concrete supplied to the base end of the three pouring conveyors, that is, the base end of the first conveyor 37 that constitutes a part of the pouring conveyor 31, passes through the first conveyor 37 on a conveyor belt driven by a drive motor (not shown). It moves to the tip, where it is transferred onto the second conveyor 38. The concrete is then moved forward or backward by a conveyor belt 46 driven by a reversible motor 52, and placed at a predetermined location via a chute 48 from one of the concrete dropping portions 47 of the second conveyor 38.

The turning section 5 turns in the following manner. That is, when the pinion 15 is rotated by the motor 17, the pinion 1
5 revolves around the gear 14 that meshes with it while rotating. Then, since the shaft 16 of the pinion 15 is pivotally supported by the rotating part 5, the rotating part 5 also rotates relative to the lifting main body 4 and outside the tower 1 as the pinion engine 5 revolves. Since the lifting main body 4 does not rotate with respect to the tower 1, only the rotating portion 5 rotates with respect to the tower 1.

When the rotating part 5 rotates in this way, the frame 30 attached to it, the pouring conveyor 31, the transfer mechanism 33, and the main column 3
9, 40, pillar 41, circle 60, electrical machine room 61,
The driver's cab 62 and the like move as a whole while keeping the relative positions the same. Therefore, since the pouring conveyor 31 also rotates around the center of rotation of the rotating portion 5, the position of the chute 48 can be rotated, and the concrete pouring position can be moved in the rotation direction of the pouring conveyor 31.

When the pouring conveyor 31 turns, the bracket 34. Transfer mechanism 33. Vertical member 58° arm 59.
Since the circle 60 also rotates together, the orbiting conveyor 20
The transfer mechanism 33 always faces there, and the base end of the pouring conveyor 31 faces there. When the transfer mechanism 33 and the pouring conveyor 31 rotate, the horizontal member 58. arm 59
．． Circle 60 also turns, so these 58.59.6
0 does not interfere with the movement of the transfer mechanism '33 and the placing conveyor 31. Therefore, the placing conveyor 31 is connected to the transfer mechanism 33. Bracket 34. Frame 30 is introduced into conveyor 2
Tower 1 can rotate to an angle that interferes with Tower 8.
It is possible to turn at almost any angle around the outer circumference (specifically, 340 degrees).

Further, the placing conveyor 31 is raised or raised by winding or sending out the wire rope 43 by driving the undulating drive device 42. As a result, the tip of the first conveyor 37 constituting the pouring conveyor 31 moves up and down, and the entire pouring conveyor 31 is moved by the pin 3.
Have them look down centering on 2. At this time, the wire robe 55
The expansion and contraction of is absorbed by the lifting and lowering of the weight 54. Due to the elevation of the pouring conveyor 31, the concrete dropping portion 4 of the pouring conveyor 3■ corresponds to the concrete pouring height.
7 height positions can be adjusted.

Expansion and contraction of the placing conveyor 31 is performed by driving an expansion and contraction motor 56. That is, the wire row 157 rotates due to the rotation of the telescopic motor 56 and pulls the extension portion 38a of the second conveyor 38. This traction force causes the second conveyor 38 to move forward and backward. This forward and backward movement is performed by the rollers 45 moving along the boom of the first conveyor 37 and the boom of the second conveyor 38 moving on the bracket 44. When the second conveyor 38 moves forward, the placing conveyor 31 is extended, and when the second conveyor 38 moves backward, the placing conveyor 31 is extended and contracted.

Wire row 1 generated due to expansion and contraction of the placing conveyor 31
The expansion and contraction of 55 is absorbed by the lifting and lowering of the weight 54 suspended from the main column 39.

In the second conveyor 38, when the reversible motor 52 is rotated forward, concrete is placed from the concrete dumping section 47 at the tip, and when the reversible motor 52 is reversed, concrete is placed from the concrete dumping section 47 at the rear end. Therefore, the concrete pouring position can be changed to any position in the longitudinal direction of the pouring conveyor 31 by moving the second conveyor 38 forward or backward by rotating the telescopic motor 56 and by selecting the rotation direction of the reversible motor 52. .

In this way, concrete can be placed at a desired position by arbitrarily selecting the length, height position, turning position, and elevation position of the placing conveyor 31. Furthermore, by placing concrete while simultaneously controlling the length, turning position, etc., it is possible to place concrete along the surface of a desired area, as shown in FIG.

In this embodiment, the rollers 19 and 26 are supported by the flange 18 of the lifting main body 4, but the flange 18 may be configured to rotate together with the rotating section 5, and in that case, If the circle 60 is supported by the flange 18, the horizontal member 58° arm 59 becomes unnecessary.

Furthermore, although this embodiment shows an example in which the present invention is applied to the construction of a fill dam spillway, it is of course possible to apply the present invention to various types of construction at any construction site where concrete is poured over a wide area. It is.

〔Effect of the invention〕

As explained above, according to the present invention, the base end of the pouring conveyor faces any position on the revolving conveyor regardless of the turning position on the outer periphery of the tower. The mechanism transfers the concrete from the circulating conveyor to the pouring conveyor, allowing the concrete to be smoothly delivered. Concrete can be delivered from the orbiting conveyor from the entire circumference of the orbiting conveyor except for the position where the tip of the introducing conveyor faces, so the turning angle of the pouring conveyor can be increased.

In addition, since an orbiting conveyor is interposed between the introduction conveyor and the pouring conveyor, and the introduction and pouring side conveyors are not directly connected, the tip position of the introduction conveyor is always the same regardless of the turning position of the pouring conveyor. There are some effects that can be done.

[Brief explanation of drawings]

FIG. 1 is an overall front view showing one embodiment of the present invention, and FIG.
Figure 3 is a partially cutaway front view of the lifting body, Figure 3 is a half-sectional side view of the lifting body, Figure 4 is a sectional view of the orbiting conveyor, Figure 5 is a sectional view of the orbiting conveyor and transfer mechanism, and Figure 6 is a sectional view of the orbiting conveyor and transfer mechanism. FIG. 5 is a plan view, FIG. 7 is an enlarged view of the main part of FIG. 4, and FIG. 8 is a bird's-eye view showing an embodiment. ■... Tower, 2... Elevating body, 3... Elevating base, 4...
... Lifting body, 5... Swivel part, 6... Jacque cylinder, 7.8... Ram, 9.10... Cylinder, 1
1.12...Engagement hole, 13...Bearing, 14...Gear, 15...Pinion, 17...Motor, 20...
・Revolving conveyor, 23... Cheno, 24... Drive gear, 25... Motor, 19.26... Roller,
28...Introduction conveyor, 31...Placement conveyor, 3
3... Transfer mechanism, 35... Scraping member, 36...
・Chute, 37...1st conveyor, 38...2nd
Conhair, 46 Conhair helt, 47 Concrete dumping part, 50 Hoist, 51.52
・Motor, 56... Telescopic motor, 57... Wire port Figure 7 Figure 5

Claims (7)

[Claims] (1) The process of introducing concrete from the tip of the introduction conveyor connected to the concrete supply source to the circulating conveyor that goes around the tower to be erected, the process of moving the concrete around the tower by the circulating conveyor, and the process of moving the concrete around the tower by the circulating conveyor. A step of transferring the concrete of the circumferential conveyor to the base end of a pouring conveyor that can be rotated around and lifted up and down at the turning position of the pouring conveyor, and transferring the concrete to a predetermined position from the concrete dropping portion of the pouring conveyor. a step of pouring the
A concrete placing method comprising the step of raising and lowering the tip of an introduction conveyor, the circumferential conveyor, and the base end of a placing conveyor together along a tower. (2) A tower to be erected, and an elevating body that goes up and down along the tower,
An orbiting conveyor supported by an elevating body and rotating around the tower; an introduction conveyor whose tip is supported by the elevating body and faces the orbiting conveyor to introduce concrete into the orbiting conveyor; A concrete pouring device comprising: a pouring conveyor whose base end faces near the orbiting conveyor; and a transfer mechanism for transferring concrete from the orbiting conveyor to the pouring conveyor. (3) The orbiting conveyor includes a ring-shaped disc supported by an elevating body, and the disc is configured to rotate while being supported by the elevating body by rollers, wheels, etc. concrete placing equipment. (4) The transfer mechanism includes a scraping member that scrapes the concrete by sliding on the upper surface of the circulating conveyor, and a chute that guides the scraped concrete to the pouring conveyor. Concrete pouring equipment as described in paragraph 3. (5) The elevating body has a rotating part that revolves around the outer periphery of the tower, and the base end of the placing conveyor and the transfer mechanism are supported on this rotating part. Concrete placement equipment listed in any of the above. (6) The pouring conveyor is a concrete pouring conveyor according to any one of claims 2 to 5, in which a plurality of conveyors are connected so that they can move forward and backward relative to each other, and are configured to be expandable and retractable as a whole. Installation equipment. (7) The conveyor at the forefront of the plurality of conveyors constituting the pouring conveyor is movable in both forward and reverse directions, and concrete dumping sections are constructed at both front and rear ends of the conveyor. Concrete placement equipment.