JPH0365466B2 - - Google Patents

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]

Examples of conventional concrete placing devices include those described in, for example, Japanese Patent Laid-Open Nos. 50-16324 and 1982-124525. 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 designated location using a discharge conveyor.

[Problem that the invention seeks to solve]

However, in the case of the former, in order to rotate the discharge conveyor, it is necessary to also rotate the tower and jib that supports it, and to do so, it is necessary to change the direction of the vehicle each time it is turned, and the discharge conveyor must also be rotated. When the conveyor is rotated, its base end position also rotates, so the conveyor from the concrete mixer truck whose tip is facing the conveyor must also be moved, which reduces the smoothness of concrete pouring work. There is.

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

[Means for solving problems]

The present invention is a concrete pouring method and apparatus for solving the above-mentioned problems, and the concrete pouring method consists of a circulating conveyor that goes around an erected tower from the tip of an introduction conveyor connected to a concrete supply source. The process of introducing concrete into the
A step in which concrete is moved around the tower by an orbiting conveyor, and the concrete of the orbiting conveyor is transferred to the base end of a pouring conveyor that can be turned around the tower and can be elevated at the turning position of the pouring conveyor. a step of placing concrete at a predetermined position from the concrete dropping portion of the placing conveyor; and a step of raising and lowering the tip of the introduction conveyor, the revolving conveyor and the base end of the placing conveyor together along the tower. Be prepared.

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 orbiting conveyor facing the; an attached conveyor that is supported by the elevating body so that it can be elevated and rotated, and whose base end faces the vicinity of the orbiting conveyor;
It is equipped with a transfer mechanism that transfers concrete from the orbiting conveyor to the pouring conveyor.

[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. The concrete introduced from the introduction conveyor is supplied to the circulating conveyor,
It is transported in a rotational direction around the tower. The base end of the pouring conveyor faces any position on the lap conveyor no matter which rotation position on the outer periphery of the tower, so the transfer mechanism transfers concrete from the lap conveyor to the pouring conveyor at that position. This allows the concrete to be delivered smoothly. Concrete can be delivered from the circulating conveyor from the entire circumference of the circulating 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〕

Figures 1 to 8 show an embodiment in which the present invention is applied to construction of a floodway for a field dam.

That is, a tower 1 is erected on the ground, and an elevating body 2 is attached to the tower 1 so as to be movable up and down. 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 are adapted to fit around 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 two are connected by a jack cylinder 6 for elevating and lowering.

The elevating base 3 and the elevating main body 4 are separately provided with rams 7 and 8 that protrude inward, and each ram 7 and 8 is driven forward and backward by cylinders 9 and 10 supported by the elevating base 3 or the elevating main body 4, respectively. be done. These rams 7 and 8 enter engagement holes 11 and 12 formed in the tower 1, so that the tower 1 supports the load of the elevating body 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. The shaft 16 of the pinion 15 is connected to the rotating portion 5
It is driven by a motor 17 with a reduction gear, which is pivotally supported by and fixed to the rotating section 5.

A flange 18 is fixed to the outer periphery of the lifting body 4, a roller 19 is rotatably supported on the upper surface of the flange 18, and an orbiting 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 circular plate 2 made up of a double plate.
1 and a shelf 2 made up of double boards set up inside it.
2, a chain 23 forming an internal gear is fixed along the inner periphery of the circulating conveyor 20, and a drive gear 24 meshing with the chain 23 is equipped with a reducer supported by the elevating main body 4. It is designed to be driven by a motor 25. 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 elevating main body 4, and the tip of an introduction conveyor 28 is pivotally attached to a stand fixed to this arm 27, and the introduction conveyor 2
8 can be raised and lowered relative to the elevating body 2. 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 a pouring conveyor 31 is pivotally attached to this frame 30 by a pin 32, so that the pouring conveyor 31 can be raised or lowered. The base end of the placing conveyor 31 is located below the circulating conveyor 20, and a transfer mechanism 33 is interposed between the circulating conveyor 20 and the placing conveyor 31.

The transfer mechanism 33 extends downward from the rotating part 5.
A bracket 34 installed between two frames 30
Supported by The transfer mechanism 33 includes a scraping member 35 whose lower end is in sliding contact with the upper surface of the disc 21 of the circulating conveyor 20 to scrape off the concrete on the disc 21, and a concrete scraped by the scraping member 35 to be transferred to a pouring conveyor. 31. Although not particularly shown, the scraping member 35 and the chute 36 are configured to be able to adjust the amount, direction, etc. of concrete to be scraped off or guided to fall.

The pouring conveyor 31 has a first conveyor 37 and a second conveyor 37.
The frame 3 of the rotating section 5
The proximal end of the first conveyor 37 is pivotally connected to the conveyor 37. The second conveyor 38 is supported below the first conveyor 37 so as to be movable forward and backward, thereby making the placing conveyor 31 extendable and retractable. The first conveyor 37 consists of a truss-shaped boom with a conveyor belt stretched across it.
The upper part of the tip is connected by a wire rope 43 to the elevating drive device 42 of the support column 41 which is pivotally connected to the revolving part 5 via the upper ends of the two main pillars 39 and 40 erected on the revolving part 5. Concatenated.

The second conveyor 38 is supported by a bracket 44 extending downwardly and fixed to the boom of the first conveyor 37, and supported by rollers 45 at the ends of the second conveyor 38.
is rotatably supported by the boom of the first conveyor 37, and the second conveyor 38 connects to the first conveyor 3 at two points, the bracket 44 and the roller 45.
It is configured to be able to move forward and backward relative to 7. 2nd conveyor 3
8 is a boom supported by the first conveyor 37;
It is provided with a conveyor belt 46 installed above the conveyor belt 46 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 rope 49 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 rope 49 . 51 is a motor for moving the hoist 50, 52 is a reversible motor for driving the conveyor belt 46, and 53 is a power transmission cable for driving the hoist 50.

The tip of the second conveyor 38 passes through the upper ends of the main columns 39 and 40 to a weight 54 that moves up and down along the main column 39.
The second
The weight 54 is moved up and down in response to the expansion and contraction of the placing conveyor 31 as the conveyor 38 moves forward and backward. In addition, a telescopic motor 56 for the casting conveyor 31 is installed on the upper surface of the first conveyor 37, and a wire rope 57 installed via the base end, upper part, tip, and lower part of the first conveyor 37 is connected to the telescopic motor 56. 56
The wire rope 57 is driven in forward and reverse directions, and the middle of the wire rope 57 is fixed to the extension portion 38a of the second conveyor 38.

Further, as particularly shown in FIGS. 2 and 4, a frame 58 supported by the lower flange 18 of the revolving conveyor 20 is suspended from the revolving portion 5, and an arm 59 extends upward from the tip of the frame 58. 59
A circle 60 that prevents concrete from falling from the outer periphery of the circulating conveyor 20 is supported at the top end of the conveyor 20 . 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 disc 21 to support the circle 60, and the upper part of the disc 21 is mostly open, so there is no risk of interfering with the introduction of concrete from the introduction conveyor 28. .
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 31 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. The base end of the introduction conveyor 28 is connected to a device 63 for producing concrete. This device 6
3 consists of a mixer of aggregate, cement and water, etc.
It has a known structure.

Next, the operation of this embodiment will be explained.

First, when the elevating body 2 is moved up and down with respect to the tower 1, the elevating base 3 and the elevating body 4 are moved in the same manner as the relationship between the head and the tail of an inchworm by the expansion and contraction of the jack cylinder 6 and the advancement and retreat of the rams 7 and 8. This is done by alternately rising or falling. The principle of such a lifting mechanism is well known in tower cranes and the like, so it will not be explained in detail.

It goes without saying that the elevating main body 4 and the rotating section 5 move up and down in unison, and the tip of the introduction conveyor 28 supported by the rotating section 5, the base end of the pouring conveyor 31, the transfer mechanism 33, the main pillars 39, 40, etc. The same is true.

As the elevating body 2 moves up and down, the introduction conveyor 2
8 also rises and falls, and the angle of the introduction conveyor 28 changes. Then, the concrete sent by the introduction conveyor 28 is transferred from its tip to the guide 39.
is guided onto the disc 21 of the circulating conveyor 20.

The orbiting conveyor 20 is rotated by the rotation of the drive gear 24 by the motor 25 and revolves around the rollers 19 . Therefore, the concrete on the disk 21 moves around the circle while remaining on the disk 21. Then, when reaching the transfer mechanism 33, the scraping member 3
5, it is scraped off from above the disc 21, 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 motion until it reaches below the tip of the introduction conveyor 28, where it is supplied with concrete as described above. The orbit of the circulating conveyor 20 is maintained by the rollers 19 and 26.

The base end of the pouring conveyor 31, that is, the pouring conveyor 3
Concrete supplied to the base end of the first conveyor 37, which constitutes a part of
be transferred upwards. The concrete is then moved either 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 15 rotates and revolves around the gear 14 that meshes with the pinion 15. Then, since the shaft 16 of the pinion 15 is pivotally supported by the rotating part 5,
As the pinion 15 revolves, the rotating portion 5 also rotates relative to the lifting main body 4 and outside the tower 1. Since the lifting main body 4 is designed not to 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, the main pillars 39 and 40, the support column 41, and the circle 6
0, the electric machine room 61 and the driver's cab 62 tower remain in the same position and move together as a whole. 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, the transfer mechanism 33, the vertical member 5
8. Since the arm 59 and the circle 60 also rotate together, the transfer mechanism 33 always faces the circulating conveyor 20, and the base end of the casting conveyor 31 faces there. Then, the transfer mechanism 33 and the pouring conveyor 3
1, the horizontal member 58, arm 59, and circle 60 also rotate, so these 58, 59,
60 does not interfere with the movement of the transfer mechanism 33 and the pouring conveyor 31. Therefore, the pouring conveyor 31
The transfer mechanism 33, the bracket 34, the frame 3
0 can be turned to an angle that interferes with the introduction conveyor 28, so it is possible to turn to almost any angle around the outer circumference of the tower 1 (specifically, 340 degrees).

In addition, the elevation of the pouring conveyor 31 is controlled by the elevating drive device 4.
2, the wire rope 43 is wound or sent out by driving. As a result, the tip of the first conveyor 37 constituting the placing conveyor 31 moves up and down, causing the entire placing conveyor 31 to rise and fall around the pin 32. At this time, the expansion and contraction of the wire rope 55 is absorbed by the lifting and lowering of the weight 54. By raising and lowering the pouring conveyor 31, the height position of the concrete dropping portion 47 of the pouring conveyor 31 can be adjusted in accordance with the concrete pouring height.

Expansion and contraction of the placing conveyor 31 is performed by driving an expansion and contraction motor 56. That is, the wire rope 57 rotates due to the rotation of the telescoping 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 pouring conveyor 31
is extended, and when it retreats, the placing conveyor 31 is extended and retracted. The expansion and contraction of the wire rope 55 that occurs with the expansion and contraction of the placing conveyor 31 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, so that it can expand and contract. The concrete placement 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 the rotation of the second conveyor 56 and by selecting the rotation direction of the reversible motor 52.

Thus, the length and height position of the pouring conveyor 31,
Concrete can be placed at a desired location by arbitrarily selecting the pivoting position or the elevated position. Furthermore, by placing concrete while simultaneously controlling the length, turning position, etc., concrete can be placed along the surface of a desired area as shown in FIG. 9.

Note that in this embodiment, the rollers 19, 2
6 is supported on the flange 18 of the lifting main body 4, but the flange 18 may be configured to rotate together with the rotating part 5. In that case, if the flange 18 supports the circle 60, Horizontal member 5
8. 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 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. There are some effects that can be done.

[Brief explanation of drawings]

Fig. 1 is an overall front view showing an embodiment of the present invention, Fig. 2 is a partially cutaway front view of the elevating body, Fig. 3 is a half-sectional side view of the elevating body, and Fig. 4 is a cross-section of the circulating conveyor. Figure 5 is a sectional view of the circulating conveyor and transfer mechanism, Figure 6 is a plan view of Figure 5, Figure 7 is an enlarged view of the main part of Figure 4, and Figure 8 is a bird's eye view showing the implementation mode. be. 1... Tower, 2... Elevating body, 3... Elevating base, 4
... Lifting body, 5 ... Swivel part, 6 ... Jack cylinder, 7, 8 ... Ram, 9, 10 ... Cylinder, 11, 12 ... Engagement hole, 13 ... Bearing, 14
... Gear, 15 ... Pinion, 17 ... Motor,
20... Orbiting conveyor, 23... Chain, 24...
...Drive gear, 25...Motor, 19, 26...
...Roller, 28...Introduction conveyor, 31...Placement conveyor, 33...Transfer mechanism, 35...Scraping member, 36...Chute, 37...First conveyor, 38...Second conveyor, 46... ... Conveyor belt, 47 ... Concrete dropping part, 50 ... Hoist, 51, 52 ... Motor, 56 ... Extension motor, 57 ... Wire rope.

Claims (1)

[Claims] 1. A step of introducing concrete from the tip of an inlet conveyor connected to a concrete supply source to an orbiting conveyor that goes around an erected tower, and a step of moving concrete around the tower by the orbiting conveyor. and a step of transferring the concrete of the circumferential conveyor to the base end of the pouring conveyor which can turn around the tower and which can be lifted up and down, at the turning position of the pouring conveyor, and from the concrete dropping part of the pouring conveyor. A concrete pouring method comprising the steps of: pouring concrete at a predetermined position; and raising and lowering the tip of an introduction conveyor, the base end of a circumferential conveyor, and a pouring conveyor together along a tower. 2. A tower to be erected, an elevating body that goes up and down along the tower, a circumferential conveyor that is supported by the elevating body and goes around the tower, and a concrete conveyor whose tip is supported by the elevating body and faces the circumferential conveyor. an introduction conveyor for introducing concrete, 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 transfer mechanism that transfers concrete from the circulating conveyor to the pouring conveyor. A concrete pouring device characterized by: 3. The concrete according to claim 2, wherein the circulating conveyor includes a ring-shaped disc supported by an elevating body, and this disc is supported by rollers, wheels, etc. on the elevating body and rotates. pouring equipment. 4. The transfer mechanism is provided with a scraping member that scrapes off 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 section. 5 The elevating body has a rotating part that rotates around the outer circumference of the tower,
Claims 2 to 4 in which the base end of the casting conveyor and the transfer mechanism are supported by this rotating part.
Concrete placing equipment described in any of the paragraphs. 6. The concrete pouring conveyor is a concrete pouring device 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. . 7. Of the multiple conveyors that make up the pouring conveyor, the conveyor at the forefront is movable in both forward and reverse directions.
7. The concrete casting device according to claim 6, wherein concrete dropping portions are constructed at both front and rear ends of the conveyor.