JP2006152652A - Raw material hopper device in environmental recycling work machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a raw material from remaining on a hopper side plate, while easily inputting the raw material in a raw material hopper 3 to which the raw material is inputted, in an environmental recycling work machine such as a soil improving machine. <P>SOLUTION: Left-right side plates 7 of the raw material hopper 3 are constituted to be freely changed into a steep inclination attitude and a gentle inclination attitude by telescopic operation of a hydraulic cylinder. Control to a gentle inclination attitude of the hydraulic cylinder is automatically performed on the basis of detection of the approach of a raw material input object to the raw material hopper 3, and is performed so as to be automatically changed in an attitude to the steep inclination attitude when the raw material input object goes away. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention belongs to the technical field of a raw material hopper device provided in an environmental recycling work machine such as a soil conditioner or a crusher.

In general, an environmental recycling work machine such as a soil improvement machine or a crusher is provided with a raw material hopper for feeding a raw material for improving the soil or a raw material for crushing. The raw material is fed into the raw material hopper using a loading work machine such as a hydraulic excavator, a wheel loader, or a dump truck (for example, Patent Document 1).
For example, as the work of loading the raw material with a hydraulic excavator, the raw material picked up by the bucket is thrown into the raw material hopper. The larger the upper opening of the raw material hopper is, the easier it is to throw the raw material. From the relationship of supplying the input raw material to the supply port of a recycling apparatus that performs environmental recycling, etc., the bottom surface of the raw material hopper needs to have a size corresponding to the width of the supply port, compared to the upper opening. It must be small. For this reason, conventionally, the left and right side plates of the raw material hopper are inclined surfaces that expand toward the upper side, the upper opening is enlarged, and the bottom surface is narrowed (for example, Patent Document 2).
JP 2004-181360 A JP 2002-167799 A

  The lower the left and right side plates of the raw material hopper, the larger the upper opening becomes and the easier it is to put in. On the other hand, there are various kinds of raw materials, and there are those with a large angle of repose, which is the inclination angle of the raw material when piled up in a natural state, and those with a large angle of repose. If the slope is a gentle slope, the raw material may remain on the side plate and may not reach the bottom surface. Further, when the left and right side plates are gently inclined, there is a problem that the vehicle width becomes wide and the road cannot be moved. In order to avoid these problems, there is a problem that the inclination angle of the left and right side plates cannot be made very gentle, and therefore the upper opening must be made small, and there is a problem to be solved by the present invention.

The present invention has been created in view of the above circumstances and has been created for the purpose of solving these problems. The invention of claim 1 includes a raw material hopper that is charged with raw materials by a charging work machine, In an environmental recycling work machine configured with a recycling device that recycles the input raw material, the side plate of the raw material hopper is transformed into a steep inclination posture and a gentle inclination posture that widens outward from the steep inclination posture. An actuator for freely forming the movable side plate, changing the movable side plate into a gently inclined posture and a steeply inclined posture, and a proximity object detecting means for detecting that the raw material input is close to the raw material hopper; The movable side plate is brought into a gentle inclination posture based on the proximity detection of the raw material input to the actuator, and the movable side plate is brought into a steep inclination posture based on the absence of the proximity detection. Which is a raw material hopper apparatus in environmental recycling work machine, characterized by being configured and a control unit for outputting a power sale control command.
A second aspect of the invention is a raw material hopper device in an environmental recycling work machine according to the first aspect, wherein the movable side plates are left and right side plates.
According to a third aspect of the present invention, there is provided the raw material hopper of the environmental recycling work machine according to the second aspect, wherein the control of the change of the movable side plate to the gently inclined posture is on the left or right side where the raw material input approaches. Device.

According to the invention of claim 1, the side plate can detect the proximity of the raw material input while the side plate can be steeply inclined so that the vehicle width can be narrowed so that the input raw material does not remain on the side plate. By doing so, it is possible to automatically put the raw material hopper in a gentle inclined posture and to widen the upper opening of the raw material hopper so that the raw material can be charged easily.
By setting it as invention of Claim 2, the raw material can be easily input from either the left or right side of the raw material hopper.
With the invention of claim 3, the side plate on which the raw material is not charged is maintained in a steeply inclined posture, and the charged raw material falls from the side plate on which the raw material is not charged due to the momentum at the time of charging. Can be prevented.

  Next, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a self-propelled soil improvement machine. The soil improvement machine 1 includes a crawler type traveling device 2, a raw material hopper 3 described later, an improver hopper 4 for introducing an improver, a raw material and an improver. It is conventional to use various member devices such as a mixing device 5 that improves the soil quality by mixing and a transport device 6 that transports and discharges the improved soil that has been improved and recycled.

  The raw material hopper 3 includes left and right side plates 7L and 7R that are inclined so as to expand outward, a rear side plate 8 and a front side plate 9, so that the four sides are surrounded and the upper side is open. Furthermore, the bottom surface is constituted by a feeder (conveyor) 10 so that the charged raw material can be conveyed and supplied to the mixing device 5 side. The left and right side plates 7L and 7R are pivotally supported by the hopper frame 11 via a support shaft 7a so as to be swingable in the left and right outer directions, and the bracket 7b protruding from each outer surface is provided with a hydraulic cylinder. The front ends of 12L and 12R are connected. The base ends of the hydraulic cylinders (actuators) 12L and 12R are connected to the hopper frame 11, and the left and right side plates 7 are greatly expanded from a steeply inclined posture in which the left and right side plates 7 are slightly expanded in the left and right directions by the expansion and contraction of the hydraulic cylinders 12L and 12R. It can be transformed into a gentle inclination posture.

  13L and 13R are proximity object detection sensors provided on the left and right sides of the frame 4a of the improver hopper 4, respectively. In the present embodiment, the proximity object detection sensors 13L and 13R project and receive far-infrared rays to detect proximity objects. The detection sensors 13L and 13R are connected to a control unit 14 for controlling expansion and contraction of the hydraulic cylinders 12L and 12R. The proximity object detection sensors 13L and 13R are adjusted in the detection range so as not to detect the swing of the left and right side plates 7L and 7R.

The hydraulic cylinders 12L and 12R receive the pressure oil from the hydraulic pump 16 by the control unit 14 that receives the detection signals from the proximity detection sensors 13L and 13R and controls the three-port left and right switching valves 15L and 15R. The control procedure will be described with reference to the flowchart shown in FIG. Note that the postures of the left and right side plates 7L and 7R are detected by detection signals from the posture detection sensors 17L and 17R.
When the engine E is started and the system is started and an initial setting is made, it is determined whether or not the posture detection sensors 17L and 17R are detecting a steeply inclined posture, and it is determined that a steeply inclined posture is detected. In this case, the input of detection signals from the proximity object detection sensors 13L and 13R is awaited, but when the steep posture is not detected, the switching valves 15L and 15R are switched to the side where the hydraulic cylinders 12L and 12R extend. (When either one of the left and right sides is not in a steeply inclined position, the single side is switched only on the side that is not.) The left and right side plates 7L and 7R are brought into a steeply inclined position. The posture detection sensors 17L and 17R may detect the inclination angles of the left and right side plates 7L and 7R with a potentiometer or the like, or may detect them based on the expansion / contraction length of the hydraulic cylinders 12L and 12R. These can be selected as appropriate.

In this way, when the left and right side plates 7L and 7R are both in a steeply inclined posture, when either one of the left and right proximity object detection sensors 13L and 13R detects proximity object, the side on which the proximity object detection is made, With this as the right side, the posture control of the right side plate 7R will be described in detail below, and the left side plate 7L is the same posture control except that the left and right positions are different.
When the right proximity object detection sensor 13R detects the bucket of the hydraulic excavator as an proximity object and the detection signal is input to the control unit 14, the control unit 14 controls the right switching valve 15R to switch to the reduction side. Is output until the right posture detection sensor 17R detects the gentle inclination posture, and when it is detected that the gentle inclination posture is detected, a control command for switching to the stop side is output to the right switching valve 15R.

  Thus, the gentle inclination posture of the right side plate 7R is maintained until the raw material is charged by the bucket, the bucket moves away, and the proximity object detection by the right side proximity object detection sensor 13R disappears, and the proximity object detection by the right side proximity object detection sensor 13R. When it is determined that the air pressure has disappeared, the control unit 14 outputs a control command for switching the right side switching valve 15R to the expansion side, and controls the right side plate 7R to change to a steeply inclined posture. It has become.

  In the embodiment of the present invention configured as described above, when performing soil improvement work, the left and right side plates 7L and 7R of the raw material hopper 3 are steeply inclined when the raw material is not charged, and the vehicle width can be reduced. In addition, when the approach of the bucket is detected by either the left or right side so that the input of the raw material is detected while the input raw material does not remain on the side plate, the detected side plate 7L or 7R is automatically gently inclined. As a result, the upper opening of the raw material hopper is widened to facilitate the input of the raw material. When the proximity detection of the bucket is lost after the insertion, the side plate 7L or 7R in the gently inclined posture automatically returns to the steeply inclined posture. As a result, the side plate 7L or 7R on the side plate 7L or 7R in the state of the gently inclined posture is returned. The raw material that has been placed on is not dropped on the side plate due to falling to the feeder 10 side, and smooth raw material conveyance is performed.

  In addition, in this case, since the movable side plates transformed into the gently inclined posture are the left and right side plates 7L and 7R, the raw material can be easily input from either the left or right side of the raw material hopper 3. In carrying out the present invention, the movable side plate is not limited to the left and right side plates as in the present embodiment, and of course, the movable side plate is implemented on at least one side plate of the side plate excluding the raw material conveyance direction of the raw material hopper. For example, in the case of the present embodiment, at least one of the left and right side plates and the rear side plate can be a movable side plate.

  In this case, the left and right side plates 7L and 7R are movable side plates. In this case, if the proximity object is detected on either the left or right side, the movable side plate 7L or 7R on the side where the proximity object is detected is used. The side plate 7R or 7L on the side that is not thrown in is set in a steeply inclined posture. As a result, if the charged raw material flows into the side plate 7R or 7L on the side that is not charged at the moment of charging, the side plate 7R or 7L on the side is steeply inclined, so that it is dammed here and falls. Can be prevented.

It is the whole soil improvement machine side view. It is a whole top view of a soil improvement machine. It is a side view of a raw material hopper part. It is a principal part rear view of a raw material hopper part. It is a block circuit diagram of attitude | position control of a movable side board. It is a flowchart figure which shows the procedure of the attitude | position control of a movable side board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Soil improvement machine 3 Raw material hopper 7L, 7R Left right board 7c Auxiliary board 12L, 12R Hydraulic cylinder 13L, 13R Proximity object detection sensor 14 Control part 15L, 15R Switching valve 17L, 17R Posture detection sensor

Claims (3)

  In an environmental recycling work machine configured to include a raw material hopper into which raw material is input by an input work machine and a recycling device for recycling the input raw material, the side plate of the raw material hopper is placed in a steeply inclined position and the steep posture. The movable side plate is configured to freely change from an inclined posture to a gently inclined posture that is expanded outward, and an actuator for changing the movable side plate into a gently inclined posture and a steeply inclined posture, and a raw material in the raw material hopper Based on the fact that the proximity detection means for detecting the proximity of the input and the proximity detection of the raw material input to the actuator, the movable side plate is placed in a gently inclined posture, and the proximity detection is lost. A raw material hopper device for an environmental recycling work machine, comprising: a control unit that outputs a control command so that the movable side plate is in a steeply inclined posture.   2. The raw material hopper device in an environmental recycling work machine according to claim 1, wherein the movable side plates are left and right side plates.   3. The raw material hopper device in an environmental recycling work machine according to claim 2, wherein the change control of the movable side plate to the gently inclined posture is on either the left or right side where the raw material input approaches.

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