JP2002356833A - Rotary feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the falling and spilling of powder and granules such as fresh concrete from a rotary feeder. SOLUTION: The rotary feeder 30 is used for a tower conveyor. A boom is rotated together with a stage, and has a belt conveyor. Powder and granules being carried by the conveyor from the front end of the boom are discharged. The rotary feeder 130 carries the powder and granules charged from a fixed place up to the conveyor for the rotated boom. The rotary feeder 130 has the first and second placing sections 131 and 133 on which the charged powder and granules are placed and the rotary section of a scraper 134. A guide means 135 fixed to the first placing section 131, interposing an opening 137 and the fixing section of a corbel 136 are mounted. Even when the rotary section meanders up and down and left and right and the granules spill from the first placing section 131, they are captured by the second placing section 133 and conveyed. Even when they spill from the second placing section 133, they are captured by the corbel 136 and carried by the scraper 134. The powder and granules are not spilled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of temporarily lifting a granular material such as fresh concrete, gravel, earth and stone used for dams, large concrete structures, civil engineering works, etc., to a high position, and attaching it to a swiveling boom. The present invention relates to a rotary feeder in a powder and granular material transporting device that sprays and places powder and granular material at a desired position while rotating a boom by a conveyor.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. Hei 8-209937 discloses a method for transferring and dispersing powder and granules such as fresh concrete and earth and sand, particularly as a method for transferring and dispersing fresh concrete in dam construction. International Publication No. WO 96/16242 and International Publication No. WO 99/11887, which are proposed and known by the present inventors and applicants.

FIG. 1 is a schematic diagram of this tower transport device. The tower transfer device 100 has a tower mast 10
1, conveying means 104, 10 for conveying a granular material such as a stage 102, a boom 103, and fresh concrete.
5. The tower mast 101 is installed near a construction position of a dam or a large structure. The tower mast 101 is provided with a transport means 104 composed of a bucket elevator for transporting a granular material such as fresh concrete.
And the transport bucket is connected to the winch device 1 via a wire.
At 06, it is driven up and down to lift the powder or granular material, such as fresh concrete, that has been put into the receiving port 113 provided at the base of the tower mast 101 to the upper position of the stage 102.

[0004] The stage 102 includes a stage base 107.
The stage base 10 is rotatably attached to the
Numeral 7 is fixed to the tower mast 101 by a clamp device (not shown). The supporter 108 is also fixed to the tower mast 101 by a clamp device (not shown). A plurality of hydraulic cylinders 109 are arranged between the supporter 108 and the stage base 107.
8 and one of the clamping devices of the stage base 107 is released, and the hydraulic cylinder 109 is operated, and the supporter 108 or the stage base 107 from which the clamping device is released is moved along the tower mast 101 and clamped. Stage base 1
07 is raised and lowered along the tower mast 101 and fixed at an arbitrary position.

A stage 102 is rotatably mounted on a stage base 107. On the stage 102, a winch device 106 which is a driving source of a bucket elevator 104, and a fresh inside a bucket lifted up by the winch device 106 A rotary feeder 130 for receiving a granular material such as concrete through the hopper 110,
A boom 103 is provided and a rotary feeder 130
A drive mechanism for rotating the stage 102 relative to the stage 102, a drive mechanism for rotating the stage 102 and a servomotor 111 as a drive source thereof,
The control device 114 and the like are mounted.

[0006] The boom 103 is attached to the stage 102 and rotates with the stage 102. Boom 1
A belt conveyer 105 is disposed on the stage 03, and the belt conveyer 105 is a rotary feeder 113 of the stage 102.
Extending to the lower part of the discharge port of the granular material. The belt conveyor 105 extends to the end of the boom, and discharges the conveyed granular material such as fresh concrete to a hopper 116 attached to the end of the boom 102. Hopper 1
A plurality of guide pipes 112 are connected to 16 and guide the powder to a position at which a granular material such as fresh concrete is discharged. A pulse coder as a speed / position detector for detecting a speed and a position is attached to the servo motor 111 for rotating the stage 102. Based on the position / speed fed back from the pulse coder, the stage 102 and the boom 103 are rotated. The rotational position and the speed are feedback-controlled. Reference numeral 115 is a counterweight.

FIG. 2 shows the stage 102 and the stage 10
FIG. 2 is a diagram showing a relationship with a rotary feeder 130 rotatably attached to the rotary feeder 2, and is a diagram viewed from above in FIG. 1. A boom 103 is attached to the stage 102, and the boom 103 is provided with a belt conveyor 105 that conveys a granular material such as fresh concrete. A rotary feeder 130 is rotatably mounted on the stage 102, and the powdery material such as fresh concrete put into the hopper 110 mounted on the tower mast 101 is transported by the rotary feeder 130 to the position of the belt conveyor 105. , From the discharge port 139 to the belt conveyor 105.

The rotary feeder 130 is driven by a drive mechanism 140 including a motor, a speed reducer, and a pinion provided on the stage 102 to rotate. Reference numeral 150 is a guide roller.

FIG. 3 is an explanatory view of a conventional rotary feeder 130 in a sectional view. The rotary feeder 130 includes a rotating portion that rotates relatively to the stage 102, and a fixed portion that is integrated with the stage 102 and guides the powder or granular material such as fresh concrete conveyed by the rotating portion. I have. The rotating portion is integrated with a mounting portion 131 for mounting and transporting a powder or granule such as fresh concrete and a mounting portion 131 provided so that the powder or granule such as fresh concrete does not spill from the mounting portion 131. , And a plurality of scrapers 134 attached to the back surface of the mounting portion 131 at predetermined intervals. The rotating portion is rotatably supported by a guide roller (not shown) provided on the stage 102 and is driven to rotate by a driving mechanism 140.

The drive mechanism 140 includes a motor and a speed reduction mechanism 141 provided on the stage 102, a pinion 142 driven by the motor and the speed reduction mechanism 141, and an inner wall of a rotating part that engages with the binion 142 and forms a rack. 132
Is provided with pins 143 provided all around.

The fixed portion is fixed to a mounting member 121 erected on the stage 102, is disposed on the outer periphery of the mounting portion 131 of the rotating portion, and is a powder of fresh concrete or the like placed on the mounting portion 131. Guide means 135 are provided to prevent the particles from spilling out. The guide means 135 is configured as an outer wall by pairing with the inner wall 132 which is a rotating part of the rotary stage 130.
A receiving member 136 having a groove that engages with the scraper 134 is mounted on the mounting member 121. The guide means 135, the receiving member 136, and the mounting member 121 of the fixed portion are removed at the position of the stage 102 on which the belt conveyor 105 is provided, and a discharge port 139 is formed. At this position, there is provided a take-out means 138 for preventing the movement of the granular material such as fresh concrete placed and carried on the placing portion 131, discharging it from the discharge port 139 and delivering it to the belt conveyor 105. Have been. Further, at this position, the bottom of the groove of the receiving member 136 is cut out to form a drop port, and the powder or granular material such as fresh concrete which has been pushed and conveyed in the groove of the receiving member 136 by the scraper 134 is used for this purpose. It is configured to drop onto the belt conveyor from the drop port.

Since the mounting portion 131 of the rotating portion rotates and the guide means 135 is fixed, a gap 137 is provided between the mounting portion 131 of the rotating portion and the guide means 135. The smooth rotation of the rotating part is maintained. The granular material such as fresh concrete leaked and spilled from the gap 137 is received by the receiving member 1.
36, and are conveyed by the moving scraper 134.

[0013]

A rubber plate or the like is provided in the gap 137 so that powdered material such as fresh concrete does not leak out from the gap 137. However, the eccentricity of the rotation center of the rotary feeder 130 and the mounting portion 13
A certain gap 137 is necessary for one vertical meandering. In particular, the rotary feeder 130 is a very large rotating body having a radius of rotation of about 5 m, and as a result, meandering in the left and right direction and meandering in the vertical direction due to the eccentricity of the rotation center cannot be avoided. Therefore, this gap 1
It is difficult to reduce 37.

The granular material such as fresh concrete leaked and spilled from the gap 137 is caught by the groove of the receiving member 136 and is pushed and conveyed by the scraper 134, and the gap between the scraper 134 and the receiving member 136 is conveyed. Also, a necessary gap must be provided in order to ensure smooth movement of the above-described meandering of the rotary feeder 130 in the horizontal and vertical directions. As a result, from the gap between the scraper 134 and the receiving member 136, a powder or granular material such as fresh concrete that is pressed by the scraper 134 and left behind without being transported is generated. In addition, since the scraper 134 also meanders, the amount of the granular material, such as fresh concrete, remaining in the groove of the receiving member 136 varies depending on the location, and a portion that overflows and spills occurs.

In particular, the position of the hopper 110 for supplying the granular material such as fresh concrete to the rotary feeder 130 is a predetermined position fixed to the tower mast 101, and the stage 102 is to be rotated. The charging position of the granular material such as fresh concrete or the like (the position of the hopper 110) does not change, but the outlet 139 from which the granular material such as fresh concrete is released from the rotary feeder 130 changes. In the example of FIG.
The granular material such as fresh concrete is supplied to the rotary feeder 13.
By 0, the sheet is conveyed by being rotated about 180 degrees counterclockwise as indicated by the arrow. However, when the stage 102 is further turned 180 degrees in the counterclockwise direction in FIG. 2, for example, the granular material such as fresh concrete introduced from the hopper 110
After being conveyed by 60 degrees, it is taken out to the belt conveyor 105. In the course of this conveyance, a case occurs in which the powder or granular material such as fresh concrete overflows from the groove of the receiving member 136 and spills.

Accordingly, an object of the present invention is to provide a rotary feeder in which powdered material such as fresh concrete of a conveyed product is not spilled down or very little during conveyance by the rotary feeder.

[0017]

SUMMARY OF THE INVENTION The present invention relates to a rotary feeder for supplying powders to conveying means mounted on a rotating boom such as a tower conveying device. The rotary feeder has first and second mounting portions, and the boom is rotatably mounted on a stage that is mounted and rotates with the boom, and the stage is supplied to the first mounting portion. Guide means provided with a discharge port for preventing the powdered material from spilling during the transport and discharging the powdered material to the transporting means, wherein the second mounting portion is provided with the first mounting portion. Take-out device that is arranged to catch the powder particles spilled from the gap between the section and the guide means, and transfers the powder particles carried by the first and second mounting portions to the transport means by rotation of the rotary feeder. By having means,
The granular material was prevented from falling off the rotary feeder. Further, the stage is provided with a receiving member provided with a groove for capturing the powder fluid spilled from the second mounting portion, and is engaged with the groove of the receiving member on the back surface of the second mounting portion, A plurality of scrapers for pushing and transporting the granular material in the groove are provided.

[0018]

FIG. 4 is a sectional view of a rotary feeder according to an embodiment of the present invention. Elements corresponding to those of the conventional example shown in FIG. 3 are denoted by the same reference numerals.

In this embodiment, the rotary feeder 1
30 is characterized in that first and second mounting portions are provided. That is, the placing portion of the conventional example is the first placing portion 131, and the second placing portion 133 is provided integrally with the placing portion 131. This second mounting portion 133 is
The guide member 135 is provided at a lower portion and a distal end portion of the first mounting portion 131 and is provided at a fixed portion with the first mounting portion 131.
This traps and transports the powder or granular material such as fresh concrete that has leaked and spilled from the gap 137 between the container and the container. A scraper 134 is fixed to the lower portion of the second mounting portion 133 at predetermined intervals. That is, the rotating portion of the rotary feeder 130 of the present embodiment is
The first mounting portion 133 is connected to the first mounting portion 131, and includes an inner wall 132 for forming a mounting groove by the first mounting portion 131, and a plurality of scrapers 134. .

The rotating portion of the rotary feeder 130 is rotatably supported by a guide roller (not shown) provided on the stage 102 and a driving mechanism 140.
Is rotated in the same manner as the conventional example shown in FIG.

On the other hand, the fixed part of the rotary feeder 130
A receiving member 136 having a groove that is attached to the mounting member 121 provided on the stage 102 and engages with the scraper 134, and a predetermined gap 137 from the surface of the first mounting portion 131 that is mounted on the mounting member 121. And the first
And a guide means 135 arranged in a direction perpendicular to the surface of the mounting portion 131. In the position where the belt conveyor 105 is provided, the guide means 135,
The receiving member 136 and the mounting member 121 are removed to form a discharge port 139 for a granular material such as fresh concrete, and the first and second powders are guided to the discharge port 139.
The movement of the granular material such as fresh concrete placed on the placing portions 131 and 133 is prevented, and the belt conveyor 1
There is provided a take-out means 138 for discharging at 05.
Conventionally, the take-out means 138 has only the first placement portion 131 as the placement portion of the granular material such as fresh concrete of the rotary feeder. Therefore, the mounting portion 13
Although it was only necessary to prevent the movement of the granular material placed on 1 and guide it to the discharge port, the present invention has the second placement portion, so that the second placement portion conveys it. Also provided is a member for guiding the granular material such as fresh concrete to be discharged to the outlet 139.

The bottom of the groove of the receiving member 136 is cut off at the position where the belt conveyor 105 is disposed and opened, and the granular material such as fresh concrete which is pushed and conveyed in the groove of the receiving member 136 by the scraper 134 is removed. It is the same as the related art that the toner is discharged on the belt conveyor 105.

The powder or granular material, such as fresh concrete, charged into the receiving port 113 is lifted up to a position above the stage 102 by a transport means 104 such as a bucket, and
It is thrown into 10. The rotary feeder 130 rotated by the driving mechanism 140 receives and conveys the granular material such as fresh concrete from the hopper 110 to the first mounting portion 131, and the movement thereof is prevented by the extracting means 138, and the fresh concrete is discharged from the discharge port 139. And the like are discharged onto the belt conveyor 105. Belt conveyor 105
The powdered granular material such as fresh concrete conveyed in the step (b) is driven into the driving position via the hopper 116 and the guide tube 112 arranged at the tip of the boom 103. At this time, the turning position of the boom 103 which turns together with the stage 102 is controlled, and the setting position of the powder or granular material such as fresh concrete is controlled.

On the other hand, in the granular material such as fresh concrete conveyed by the rotary feeder 130, a gap 137 between the first mounting portion 131 and the guide means 135 of the fixed portion.
The granular material such as fresh concrete leaked and spilled from the container is transported by the second mounting portion 133. The powder and granular material such as fresh concrete conveyed by the second placing portion 133 is also prevented from moving by the take-out means 138 and discharged onto the belt conveyor 105 from the discharge port 139.
Further, the granular material leaking and falling down from the second mounting portion 133 falls into the groove of the receiving member 136, moves along the groove of the receiving member 136 while being scraped by the scraper 134, and is provided at the discharge port 139. It falls onto the belt conveyor 105 from the bottom opening of the groove.

In the present invention, since the second mounting portion 133 also rotates together with the first mounting portion 131, the second mounting portion 133 leaks from the gap 137 between the first mounting portion 131 and the guide means 135. The particles such as fresh concrete falling on the second mounting portion 133 are also uniform, and the amount of particles such as fresh concrete spilling from the second mounting portion 133 is reduced. Moreover, the first and second mounting portions 13
When the first member 133 makes one rotation, it always passes through the discharge port 139, and the granular material such as fresh concrete placed and conveyed on the mounting portions 131 and 133 is discharged from the discharge port 139. Therefore, the granular material such as fresh concrete hardly spills from the second mounting portion 133. Also, even if it spills from the second mounting portion, it is received by the groove of the receiving member 136 and conveyed by the scraper 134, so that the granular material such as fresh concrete is surely conveyed to the belt conveyor 105 without spilling. Can be handed over.

[0026]

According to the rotary feeder of the present invention, since there is almost no spillage of the granular material such as fresh concrete of the conveyed material, there is no contamination of the tower transport device or the like using this rotary feeder, and the machine is controlled. Becomes easier. Also, maintenance costs are low. further,
Since there is no drop-out, there is no waste of granules such as fresh concrete, and an efficient transport device can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an example of a tower transport device to which a rotary feeder of the present invention is applied.

FIG. 2 is an explanatory diagram of a main part of a rotary feeder portion in the tower transport device.

FIG. 3 is a cross-sectional view of a rotary feeder illustrating one embodiment of a conventional rotary feeder.

FIG. 4 is a cross-sectional view of a rotary feeder illustrating an embodiment of the rotary feeder of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Tower transport device 101 Tower mast 102 Stage 103 Boom 104 Transport means (bucket) 105 Belt conveyor 107 Stage base 110 Hopper 111 Servo motor 130 Rotary feeder 131 First placing section 132 Inner wall 133 Second placing section 134 Scraper 135 Guide means 136 Receiving member 137 Gap 140 Drive mechanism 141 Motor and reduction gear 142 Vinion 143 Pin 150 Guide roller

Claims (2)

[Claims] 1. A rotary feeder for supplying powder and granular material to transport means mounted on a revolving boom, the rotary feeder including first and second mounting portions, and the boom is mounted on the rotary feeder. It is rotatably attached to a revolving stage, and prevents the powder supplied to the first mounting portion from spilling during transportation on the stage. A guide unit provided with a discharge port for discharging, wherein the second placement unit is arranged to capture the powder particles spilled from a gap between the first placement unit and the guide unit; A rotary feeder, comprising: a take-out unit that transfers the powdery material carried by the first and second mounting units by rotation to the transporting unit. 2. The apparatus according to claim 1, wherein the stage has a receiving member provided with a groove for capturing the powder fluid spilled from the second mounting part, and a groove of the receiving member is provided on a back surface of the second mounting part. The rotary feeder according to claim 1, further comprising a plurality of scrapers that engage and push and convey the granular material in the groove.