JP2004216556A - Aggregate supply system of batcher plant and grab - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate installation while reducing cost. <P>SOLUTION: A batcher plant 10 is equipped with a transfer machine 50. The transfer machine 50 is constituted so that sand is taken out of a sand storage pit 14 (14a and 14b) to be charged in a first supply hopper 20 and gravel is taken out of a gravel storage pit 16 to be charged in a second supply hopper 22. A control unit 66 controls the transfer machien 50 on the basis of the output signals of the sand filling sensor 68 provided to the first supply hopper 20 and the gravel filling sensor 70 provided to the second supply hopper 22 to perform the supply of sand and gravel to the supply hoppers 20 and 22 and the stop of the supply of them. The sand and gravel in the supply hoppers 20 and 22 are supplied to a kneader 32 by a sand conveyor 28 and a gravel conveyor 30. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a batcher plant for manufacturing concrete, and more particularly to an aggregate supply system and a grab for a batcher plant installed near a construction site where it is difficult to transport ready-mix concrete (so-called ready-mixed concrete).
[0002]
[Prior art]
For large-scale construction work such as tunnel construction, dam construction, and skyscraper construction, ready-mix concrete (hereinafter referred to as ready-mixed concrete) having stable quality is indispensable. However, construction sites such as tunnels and dams are often located in the mountains far away from ready-mixed concrete production plants, and road maintenance is inadequate. For this reason, there are many cases where it is difficult to transport ready-mix concrete from a production factory to a construction site. Therefore, in recent years, a ready-mixed concrete manufacturing facility (batcher plant) which is relatively easy to install and disassemble is provided at or near the construction site, and the ready-mixed concrete required for construction is produced in this batcher plant. ing.
[0003]
Conventionally, small batcher plants installed at such construction sites have conventionally provided storage pits for putting aggregates such as sand and gravel into the ground, and installed conveyors with one end located below the storage pits. The transport conveyor transports the aggregate stored in the storage pit to a kneading device provided on the ground.
[0004]
[Problems to be solved by the invention]
As described above, a conventional small batcher plant installed at a construction site or the like has a structure in which a large batcher plant that produces a large amount of ready-mixed concrete is reduced in size as it is, and a transport conveyor that transports aggregate. Is installed underground. For this reason, underground excavation work must be carried out, which requires a lot of time, materials and labor for the installation work of the batcher plant, which increases the installation cost, and supplies the aggregate from which the moisture contained has been removed. And there was a problem in quality.
The present invention has been made to solve the above-mentioned drawbacks of the related art, and has as its object to enable easy installation and cost reduction.
[0005]
In addition, the work of grabbing loose loads such as aggregates and grains with grabs (grab buckets) is generally performed by a grab operator operating the grab up and down from a high position and visually observing that the grabs have landed on the loose loads. Deciding. For this reason, the work efficiency is lowered, for example, the determination that the glove has landed is delayed, or the determination of the landing is too early to sufficiently grasp the loose load.
An object of the present invention is to improve the efficiency of a grabbing operation by a grab.
[0006]
[Means for Solving the Problems]
The aggregate supply system of the batcher plant according to the present invention includes: a first storage unit that stores a first aggregate imported from outside; a second storage unit that stores a second aggregate imported from outside; A kneading device for kneading the first aggregate and the second aggregate with cement and water, and a first supply for supplying the first aggregate to a first conveyor for conveying the first aggregate to the kneading device A hopper, a second supply hopper that supplies the second aggregate to a second transporter that transports the second aggregate to the kneading device, the first aggregate and the second storage in the first storage unit A transfer machine for taking out the second aggregate in the section and putting it into the first supply hopper or the second supply hopper, and a first filling for detecting a filling state of the first aggregate in the first supply hopper A second filling for detecting a filling state of the second aggregate in the second supply hopper with a sensor And controlling the transfer machine based on output signals of the first filling sensor and the second filling sensor, the first supply hopper or the second supply of the first aggregate or the second aggregate. And a control device for supplying and stopping supply to the hopper.
[0007]
The transfer device may be controlled by the control device to take out the first aggregate or the second aggregate from a plurality of locations in the first storage unit or the second storage unit. In addition, the transfer device can be provided with an accretion sensor that detects that the grab from which the first aggregate or the second aggregate is removed comes into contact with the aggregate. Further, the control device may be configured to be able to detect the presence or absence of the first aggregate or the second aggregate in the first storage unit or the second storage unit based on the output signal of the landing sensor and the descent amount of the grab. .
[0008]
Further, the grab according to the present invention is a grab main body that is suspended so as to be able to move up and down, and is provided so as to be able to move forward and backward with respect to the grab main body. It is characterized by having an advancing / retracting member that moves forward, and a landing sensor that detects that the advancing / retreating member has advanced toward the glove body. The glove body may be provided with an elastic body for urging the advance / retreat member toward the glove body.
[0009]
[Action]
According to the present invention, the first aggregate or the second aggregate stored in the first storage unit or the second storage unit is taken out by the transfer machine and is put into the first supply hopper or the second supply hopper. It is not necessary to dispose a conveyor or other conveyor underground to convey the aggregate to the kneading device, so that installation work can be simplified and the construction period can be shortened. Materials can also be saved and costs can be reduced. In addition, since the first supply hopper and the second supply hopper are provided with the filling sensor for detecting the filling state of the aggregate, the first aggregate or the second aggregate is unnecessarily supplied to the first supply hopper or the second supply hopper. It is possible to prevent a situation in which the raw material is not supplied to the supply hopper and overflow, and a situation in which the production of ready-mixed concrete is stopped due to a shortage of the supplied amount is prevented.
[0010]
If the aggregate in the storage unit is removed from multiple locations, the aggregate remaining in the storage unit will become mortar-shaped, and the removal amount by the transfer machine will fluctuate greatly, or the aggregate remains in the storage unit. This makes it possible to avoid difficulties in taking out the product. If the transfer device is provided with an accretion sensor to detect that the glove has come into contact with the aggregate in the storage unit, the timing of removing the aggregate can be easily and reliably controlled. Also, if the presence or absence of the aggregate in the storage unit can be detected based on the output signal of the accretion sensor and the amount of drop of the grab, for example, the aggregate in the storage unit may be emptied and the grab collides with the bottom of the storage unit. Thereby, it is possible to prevent the drain tube and the like from being damaged.
[0011]
In addition, the glove according to the present invention is such that when the glove body is unloaded onto a bulk load such as an aggregate or grain, the retreating member that advances and retreats with respect to the glove body advances toward the glove, and the landing sensor detects this. It is possible to easily and surely know that the glove body has landed, to prevent an operator from making a mistake in the landing timing of the glove, and it is possible to improve the efficiency of the grab bulk picking operation. In addition, it becomes possible to automate the work of grabbing loose loads by grab. When the glove body is provided with an elastic body that urges the advance / retreat member toward the glove body side, even when sand or the like adheres to the glove body when the glove body is unloaded, the advance / retreat member is securely moved to the glove body side. And the responsiveness of the advancing / retracting member is improved, so that the working efficiency can be further improved.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of an aggregate supply system and a grab of a batcher plant according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is an explanatory diagram of an aggregate supply system of a batcher plant according to an embodiment of the present invention, and FIG. 2 is a plan view omitting a transfer machine. In these figures, the batcher plant 10 is installed in a building 12 so as not to be affected by wind and rain. A sand storage pit 14 (14a, 14b) as a first storage unit and a gravel storage pit 16 as a second storage unit are provided on a floor surface in the building 12. The sand storage pit 14 stores sand as a first aggregate, and the gravel storage pit 16 stores gravel (not shown) as a second aggregate. A protective fence 18 is provided around the storage pits 14 and 16 to prevent a worker (not shown) from falling into the storage pits 14 and 16. The batcher plant 10 of the embodiment has two sand storage pits 14 and one gravel storage pit 16. This is because when concrete is manufactured, the amount of sand generally used is about twice as much as the amount of gravel.
[0013]
A first supply hopper 20 for charging sand and a second supply hopper 22 for charging gravel are installed above the gravel storage pit 16 which is one end of the building 12. In these supply hoppers 20, 22, the formation positions of the supply ports 24, 26 at the lower ends are shifted in the vertical direction in FIG. 2, as shown in FIG. The supply port 24 of the first supply hopper 20 and the supply port 26 of the second supply hopper 22 have different heights as shown in FIG. It is. Below the first supply hopper 20 and the second supply hopper 22, the lower ends of the inclined sand conveyor (first transporter) 28 and the gravel conveyor (second transporter) 30 are located, The sand in the first supply hopper 20 and the gravel in the second supply hopper 22 can be supplied to these conveyors 28 and 30 through supply ports 24 and 26.
[0014]
The sand conveyor 28 and the gravel conveyor 30 are provided in parallel, and the upper end extends to the upper part of the kneading device 32 provided at the other end of the building 12. The kneading device 32 has input hopper portions 34 and 36 into which sand and gravel are input (see FIG. 2), and has a cement input portion 38 and a water injection portion 40, as shown in FIG. As described above, the kneader 42 is provided below these. The kneading machine 42 manufactures concrete by kneading cement, sand, gravel, and water supplied at a predetermined ratio. Further, the kneading device 32 is provided with a dispensing hopper 44 on the side of the kneading machine 42. The dispensing hopper 44 is for supplying ready-mixed concrete to a mixer wheel (agitator) (not shown) that has entered below the kneading device 32, and is supplied with ready-mixed concrete produced by the kneading machine 42.
[0015]
A transfer device 50 is provided at an upper part in the building 12. In this transfer device 50, a hydraulic grab bucket (hereinafter, simply referred to as a grab) 54 is provided on a hoist 52, and as shown by an arrow 56 in FIG. 3, above each storage pit 14, 16 and the supply hopper 20, The vehicle travels between and above 22. That is, a pair of rails 58 is provided on both sides of the building 12, and the traveling girder 60 is passed over these rails 58, and the traveling girder 60 moves on the rails 58. In the transfer device 50, the hoist 52 moves along the traveling girder 60. Then, the transfer machine 50 drives the hoist of the hoist 52 so that the grab 54 can be lowered into the storage pits 14 and 16 as indicated by an arrow 62. The sand or gravel stored therein is taken out by the grab 54 and put into the first supply hopper 20 or the second supply hopper 22.
[0016]
The hydraulic grab 54 is as shown in FIG. 5 to FIG. 7. The grab main body 110 has a box-shaped support frame 112, and a pair of opening / closing bucket portions 114 (114 a, 114 a, 114b). A dog 118 is attached to a rotation shaft 116 of one of the opening / closing bucket portions 114. The dog 118 operates limit switches 120 and 122 attached to the side surface of the support frame 112.
[0017]
One of the limit switches 120 detects that the open / close bucket 114 is open. When the pair of open / close buckets 114 is open as shown by a two-dot chain line in FIG. The detection signal is output to the control device 66 shown in FIG. When the open / close bucket section 114 is closed as shown by the solid line in FIG. 5, the other limit switch 122 is actuated by the contact of the dog 118, and a signal indicating that the open / close bucket section 114 is closed is sent to the control device 66. Output. At the upper part of the support frame 112, an accretion detection unit 130 for detecting that the glove 54 has landed on the sand or gravel in the pits 14, 16 is provided.
[0018]
As shown in FIG. 7, the landing detection unit 130 includes a suspension plate 132 serving as an advancing / retreating member, and a landing sensor 134 including a limit switch for detecting that the suspension plate 132 has moved to the support frame 112 side of the grab main body 110. And A bracket 136 is provided upright on the suspension plate 132, and a U-link 140 is connected to the bracket 136 via a pin 138. The U-link 140 is pivotally supported by a hanger 142 attached to the tip of the wire of the glove 54 (see FIGS. 5 and 6).
[0019]
Four guide rods 144 are mounted on the upper surface of the center of the support frame 112. These guide rods 144 guide the suspension plate 132 in the vertical direction, and penetrate the four corners of the suspension plate 132. Further, each guide rod 144 is provided with a spring receiver 146 at an upper portion. A compression spring 148 which is an elastic body through which a guide rod 144 is inserted is interposed between the spring receiver 146 and the upper surface of the suspension plate 132. The compression spring 148 urges the suspension plate 132, which is an advance / retreat member, toward the support frame 112. Further, on the upper surface of the support frame 112, the mounting plate 150 is fixed in an upright state at a position corresponding to the center in the width direction of the suspension plate 132. A landing sensor 134 is attached to a side surface of the attachment plate 150. The landing sensor 134 outputs a landing signal to the control device 66 when the glove body 110 has landed on sand or gravel and the hanging plate 132 has reached the position shown by the solid line in FIG.
[0020]
Further, the hoist 52 is provided with a wire feeding sensor 64 for detecting the feeding amount of the wire for moving the grab 54 up and down. The output signal of the wire feeding sensor 64 is input to the control device 66. Then, the control device 66 detects the presence or absence of aggregate (sand or gravel) in the storage pit from the output signals of the wire feeding sensor 64 and the landing sensor 134, as described in detail later.
[0021]
Further, the first supply hopper 20 and the second supply hopper 22 have a sand filling sensor 68 and a gravel filling sensor 70 at the upper part. These filling sensors 68, 70 are constituted by, for example, optical sensors or the like, and emit a light beam in the horizontal direction, and indicate that sand or gravel has been filled up to the top of the supply hoppers 20, 22 and is full. Detects and sends a detection signal to the controller 66. Then, the control device 66 controls the transfer device 50 based on the output signals of the sand filling sensor 68 and the gravel filling sensor 70 to supply sand or gravel to the first supply hopper 20 and the second supply hopper 22, Stop supply.
[0022]
The building 12 has a carry-in port 74 provided with a shutter 72 corresponding to each of the storage pits 14 and 16 (see FIG. 2). Can be carried into the storage pits 14 and 16. A loading safety device 80 is provided in front of each loading port 74. These carry-in safety devices 80 include three vehicle approach sensors 86 and a safety switch 90 as shown in FIG. In the case of the embodiment, the vehicle entry sensor 86 comprises an optical sensor, is disposed in front of the storage pits 14 and 16, and a safety switch 90 is disposed in front of the storage pits.
[0023]
When the driver of the dump truck 92 removes the safety switch 90, an alarm buzzer (not shown) emits an alarm sound intermittently. Then, the worker who is monitoring the batcher plant 10 presses the evacuation button of the transfer device 50 when the alarm sound is emitted when the batcher plant 10 is automatically operated. Accordingly, when the grab 54 is in the up-and-down operation, the transfer device 50 ends the operation of putting sand or gravel into the supply hopper and stops at the upper end position. In addition, when the dump truck 92 blocks light from the vehicle entry sensor 86 when the grab 54 of the transfer device 50 does not end the loading operation, the carry-in safety device 80 immediately stops the lifting / lowering operation, the moving operation, and the loading operation.
[0024]
When the driver of the dump truck 92 finishes putting sand or gravel into the sand storage pit 14 or the gravel storage pit 16, the driver retreats the dump truck 92 to a safe position and connects the plug of the safety switch 90. This stops the intermittent sound of the alarm buzzer. Then, when the worker monitoring the batcher plant 10 presses the operation button, the automatic operation of the batcher plant 10 is restarted.
[0025]
The automatic operation of the batcher plant 10 is performed as follows. In addition, in this embodiment, the case where the usage of sand is twice the usage of gravel will be described. Further, the batcher plant 10 can select an automatic operation or a manual operation by switching a switch.
[0026]
FIG. 9 is a flowchart illustrating a main part of the automatic operation of the batcher plant 10. When the automatic operation start switch is turned on in a state where the supply hoppers 20 and 22 are empty or almost empty, such as at the start of work in the morning, the controller 66 causes the hoist 52 of the transfer device 50 to operate. By controlling, the transfer device 50 is moved above the sand storage pit 14 where the sand is stored (for example, the sand storage pit 14a). Then, the control device 66 draws out the wire from the hoist of the transfer device 50 and lowers the wire with the opening / closing bucket portion 114 of the grab 54 opened. In the case of the embodiment, when the limit switch 120 provided on the grab main body 110 is not operated, that is, when the limit switch 122 is operated and the open / close bucket 114 is closed, the control device 66 sets the grab 54 Not to descend.
[0027]
When the grab 54 is suspended by the wire, the glove body 110 moves downward by its own weight with respect to the suspension plate 132 suspended on the wire via the suspension 142 and the U-link 140, and the suspension plate 132 is compressed by the compression spring 148. Is further compressed to a position where it is retracted relative to the glove body 110. When the opening / closing bucket portion 114 of the glove 54 comes into contact with the sand stored in the sand storage pit 14a, the suspension plate 132 advances toward the support frame 112 side of the glove body 110 by the urging force of the compression spring 148, and Activate the sensor 134. The landing sensor 134 inputs a detection signal indicating that the glove 54 has landed to the control device 66. When receiving the detection signal from the landing sensor 134, the control device 66 drives the hydraulic device after a predetermined time (for example, 1 to 2 seconds), closes the opening / closing bucket unit 114, and grasps the sand. Then, the control device 66 raises the grab 54 to move it above the first supply hopper 2, and throws sand into the first supply hopper 20.
[0028]
In this way, the control device 66 controls the transfer device 50 to take out the sand from the sand storage pit 14a twice and put it into the first supply hopper 20, as shown in Step 100 of FIG. Gravel is once taken out of the storage pit 16 and put into the second supply hopper 22. In the case of the embodiment, when the aggregate (sand or gravel) is extracted from the same storage pit, the aggregate (sand or gravel) is sequentially extracted from a plurality of locations (for example, three locations) in the storage pit. This can prevent the sand or gravel remaining in the sand storage pit 14 or the gravel storage pit 16 from becoming mortar-like, so that the amount taken out by the grab 54 can be made substantially constant, and the sand or the gravel can be kept in the storage pit. It is possible to prevent the aggregate from remaining and being unable to be taken out.
[0029]
If the control device 66 puts the sand twice and the gravel once into the supply hoppers 20 and 22 as described above, both of the filling sensors 68 and 70 provided in these supply hoppers 20 and 22 are turned off. That is, it is confirmed that the supply hoppers 20, 22 are not full (step 101). When both the supply hoppers 20 and 22 are not full, the process returns to step 100 and repeats the processing of steps 100 and 101. Then, at step 101, at least one of the filling sensors 68, 70 is turned on in step 101, and when one of the supply hoppers 20, 22 is full, the process proceeds to step 102, where the sand filling sensor 68 is turned on (first supply). It is checked whether the hopper 20 is full. If the sand filling sensor 68 is not turned on, the transfer device 50 is controlled to put the sand into the first supply hopper 20 (step 103). After that, the process returns to step 102 to check whether the first supply hopper 20 is full, and to supply sand until the first supply hopper 20 is full (step 103).
[0030]
If the first supply hopper 20 is full at step 102, the control device 66 proceeds to step 104 and checks whether the gravel filling sensor 70 is on, that is, whether the second supply hopper 22 is full. If the gravel filling sensor 70 is on in step 104, the control device 66 returns to step 102 and repeats the above operation. If the gravel filling sensor 70 is off at step 104 and the second supply hopper 22 is not full, the controller 66 controls the transfer device 50 to take out the gravel from the gravel storage pit 16 and send it to the second supply hopper 22. (Step 107), the process returns to Step 102, and the processes in and after Step 102 are repeated. Thereby, after the first supply hopper 20 and the second supply hopper 22 are both full and the sand conveyor 28 and the gravel conveyor 30 are activated, aggregate is supplied only to the supply hopper that is no longer full. throw into.
[0031]
The emptying of the aggregates in the storage pits 14 and 16 is detected as follows. For example, when sand is taken out from the sand storage hopper 14a by the transfer device 50, the control device 66 controls the hoisting machine provided in the transfer device 50 to feed out the wire, and puts the grab 54 in the sand storage hopper 14a. To lower. At this time, the control device 66 takes in the output signal of the wire feeding sensor 64 provided in the hoist and obtains the amount of descent of the grab 54. Then, when the landing sensor 134 does not detect the landing of the grab 54 even though the descending amount of the grab 54 has reached the preset value, the control device 66 determines that the sand in the sand storage pit 14a is empty, The display unit (not shown) displays that the sand storage pit 14a is empty, sounds an alarm buzzer, and raises the grab 54 to the upper end position. Accordingly, it is possible to prevent the grab 54 from being damaged by the grab 54 colliding with the bottom surface of the empty storage pit 14a.
[0032]
When the sand storage pit 14a is emptied, the operator cancels the above-mentioned alarm, gives a signal for switching the storage pit from which sand is to be taken out to the sand storage pit 14b to the control device 66 by a switch or the like, and presses the input OK confirmation button. By pressing, the automatic operation of the batcher plant 10 is restarted.
[0033]
When detecting that the aggregate in the storage pit is empty, the control device 66 monitors the descent time of the glove 54 by a timer (not shown), and within a predetermined time after the descent of the glove 54 starts. Alternatively, when the landing sensor 134 does not detect the landing of the grab 54, it may be determined that the storage pit is empty. Of course, the emptying of the storage pit may be detected by a level sensor using ultrasonic waves or light.
[0034]
As described above, since the batcher plant 10 according to the embodiment includes the sand conveyor 28 and the gravel conveyor 30 other than the sand storage pit 14 and the gravel storage pit 16 on the ground, the installation is easy and the cost is reduced. Can be. In addition, the first supply hopper 20 is provided with a sand filling sensor 68, and the second supply hopper is provided with a gravel filling sensor 70. The output signals of these filling sensors 68, 70 enable the control device 66 to control the supply hopper for sand and gravel. Since the feeding into the feed hoppers 20 and 22 is controlled, it is possible to avoid a situation in which sand or gravel overflows from the feed hoppers 20 and 22 or the feed hoppers 20 and 22 become empty and production of ready-mixed concrete is stopped.
[0035]
In addition, the grab 54 of the embodiment can detect that the glove main body 110 provided with the landing sensor 134 has landed on the aggregate, so that the operation of grabbing the aggregate by the grab 54 can be automated, Work efficiency can be improved. Even when the glove 54 is driven manually, the operator does not need to visually determine whether or not the glove 54 has landed, so that the burden on the operator can be reduced and the glove 54 can be properly landed. And work efficiency can be improved. In addition, since the suspension plate 132 is urged toward the glove body 110 by the compression spring 148, even when sand or the like is attached when the glove body 110 is attached to the aggregate, the suspension plate 132 can be used. 132 can be reliably advanced to the grab main body 110 side, the suspension plate 132 can be moved quickly, and responsiveness can be improved.
[0036]
Note that the above-described embodiment is one aspect of the present invention, and the present invention is not limited to this. For example, in the above-described embodiment, the case where the used amount of the sand is twice the used amount of the gravel has been described, but the ratio of the used amount of both can be arbitrarily set according to the type and the specification of the concrete to be manufactured. The aggregate may be other than sand or gravel, and the number of storage pits may be arbitrarily provided. In the above embodiment, the case where the filling sensors 68 and 70 emit a light beam in the horizontal direction has been described. However, the filling state of the supply hoppers 20 and 22 can be changed by a level sensor that emits light or ultrasonic waves in the vertical direction. You may make it detect.
[0037]
Further, in the above-described embodiment, the case where the aggregate is grasped by the grab 54 having the accretion sensor 134 has been described. In the above-described embodiment, the case where the landing sensor 134 is a limit switch has been described. However, the landing sensor may be configured by a proximity switch, an operation transformer, an ultrasonic sensor, an optical sensor, or the like. Further, the elastic body may be rubber or the like.
[0038]
【The invention's effect】
As described above, according to the present invention, the first aggregate or the second aggregate stored in the first storage unit or the second storage unit is taken out by the transfer machine, and the first supply hopper or the second supply hopper is used. Since it is put into the hopper, there is no need to dispose a conveyor or other conveyor under the ground to convey the aggregate to the kneading device, simplifying the installation work and shortening the construction period, Necessary materials can be saved, and costs can be reduced.
[0039]
In addition, the glove according to the present invention is such that when the glove body is unloaded onto a bulk load such as an aggregate or grain, the retreating member that advances and retreats with respect to the glove body advances toward the glove, and the landing sensor detects this. It is possible to easily and surely know that the glove body has landed, to prevent an operator from making a mistake in the landing timing of the glove, and it is possible to improve the efficiency of the grab bulk picking operation. In addition, it becomes possible to automate the work of grabbing loose loads by grab.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an aggregate supply system of a batcher plant according to an embodiment of the present invention.
FIG. 2 is a plan view omitting a transfer machine of the aggregate supply system of the batcher plant according to the embodiment.
FIG. 3 is a diagram illustrating an operation of a transfer machine in the aggregate supply system of the batcher plant according to the embodiment.
FIG. 4 is a side view of a kneading apparatus in the supply system of the batcher plant according to the embodiment.
FIG. 5 is a front view of the glove according to the embodiment.
FIG. 6 is a side view of the glove according to the embodiment.
FIG. 7 is a detailed explanatory diagram of a landing detection unit provided in the glove according to the embodiment.
FIG. 8 is a detailed explanatory view of the carry-in safety device according to the embodiment.
FIG. 9 is a flowchart illustrating a main part of automatic operation of the aggregate supply system of the batcher plant according to the embodiment.
[Explanation of symbols]
10 Batcher plants, 14a, 14b First storage unit (sand storage pit), 16 Second storage unit (gravel storage pit), 20 First supply hopper, 22 Second supply hopper, 28 First conveyor (sand conveyor), 30 Second conveyor (gravel conveyor), 32 Kneading device, 50 Transfer machine, 64 Wire Dispensing sensor, 66 Control device, 68 First filling sensor (sand filling sensor), 70 Second filling sensor (gravel filling sensor), 110 Grab main body, 112 Support Frame, 114a, 114b Opening / closing bucket section, 130 ... Arrival detection section, 132 ... Advancing / retreating member (suspension plate), 134 ... Arrival sensor, 144 ... Guide rod, 148 ... Compression Spring.

Claims (6)

A first storage unit that stores the first aggregate introduced from outside,
A second storage unit for storing a second aggregate introduced from outside,
A kneading device for kneading the first aggregate and the second aggregate with cement and water,
A first supply hopper that supplies the first aggregate to a first conveyor that conveys the first aggregate to the kneading device;
A second supply hopper that supplies the second aggregate to a second conveyor that conveys the second aggregate to the kneading device;
A transfer machine that takes out the first aggregate in the first storage unit and the second aggregate in the second storage unit and puts the aggregate into the first supply hopper or the second supply hopper;
A first filling sensor that detects a filling state of the first aggregate in the first supply hopper;
A second filling sensor for detecting a filling state of the second aggregate in the second supply hopper,
The transfer machine is controlled based on output signals of the first filling sensor and the second filling sensor, and the transfer of the first aggregate or the second aggregate to the first supply hopper or the second supply hopper is performed. A control device for supplying and stopping supply,
An aggregate supply system for a batcher plant, comprising: The aggregate supply system for a batcher plant according to claim 1,
The transfer machine is controlled by the control device to take out the first aggregate or the second aggregate from a plurality of locations in the first storage or the second storage. Feeding system. In the aggregate supply system of the batcher plant according to claim 1 or 2,
The transfer device may include an accretion sensor that detects that a grab for removing the first aggregate or the second aggregate from the first storage unit or the second storage unit has contacted the aggregate. Aggregate supply system of Batcher Plant. The aggregate supply system of the batcher plant according to claim 3,
The control device detects presence or absence of the first aggregate or the second aggregate in the first storage unit or the second storage unit based on an output signal of the landing sensor and an amount of descent of the glove. An aggregate supply system for a batcher plant. A grab body that can be lifted and lowered,
An advancing / retreating member that is provided so as to be able to advance and retreat with respect to the glove body, retreats when the glove body is hung, and moves forward when the glove body gets down;
A landing sensor for detecting that the advance / retreat member has advanced toward the glove body,
A grab, comprising: The grab according to claim 5,
The glove, wherein the glove body has an elastic body for urging the advance / retreat member toward the glove body.

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