JP6061887B2 - Wood chip mixing and unloading device and wood chip stuffing machine - Google Patents

Description

  The present invention relates to a wood chip agitating / carrying-out device that stirs wood chips, carries them out by screw blades and performs bagging, and a wood chip stuffing machine using the wood chip agitating / carrying-out device.

  In recent years, wood chips are packed into net bags to form a wood chip filter, and the filters composed of the wood chips and net bags are stacked on a slope to filter mud water. Measures are taken to prevent accumulation in the riverbed. Conventionally, the work of filling the wood chip into the net bag has been performed manually. However, since the work involves labor, mechanization has been desired.

  Therefore, the present applicant has already developed a device in which a net bag is attached to a wood chip discharge portion by screw blades and used as a device for packing a wood chip into a bag, and proposed in Patent Document 1.

JP2013-166628A

  The wood chip agitating / carrying-out device described in Patent Document 1 is provided with a discharge pipe for press-fitting the wood chip in the hopper from the discharge pipe into the net bag by a rotating body having screw blades. Clogging may occur near the outlet. When clogging occurs, reverse the screw blades and move the wood chips to the opposite side of the discharge port to eliminate the clogging. On the rotation support part side), it may be compacted and fixed with the end plate of the hopper, which may not be removed. The wood chip adhered to this part has an adverse effect on the rotating body itself and the rotating support part, so it must be removed. In this case, the rotating body is stopped and the base end of the rotating body at the bottom from the top of the hopper. It was necessary to access and remove the stuck wood chips, which required labor and time for the work.

  In view of the above problems, the present invention provides a wood chip agitating / unloading device and a wood chip stuffing machine that can perform quick recovery when wood chips become clogged, and can efficiently stir and carry out wood chips. The purpose is to do.

The wood chip stirring and carrying out apparatus according to claim 1
A hopper that accepts wood chips,
An arcuate groove provided at the bottom of the hopper;
A circular opening provided continuously to the arc-shaped groove on the chip discharge side end plate of the hopper;
A discharge pipe to which one end is fixed and attached to the chip discharge side end plate, and a chip filling net bag is attached;
A tip discharge rotating body supported in the arc-shaped groove, extending from the arc-shaped groove to the inside of the discharge pipe, and provided with a screw blade on a shaft portion;
A tip stirring rotor provided above the tip discharging rotor in the hopper and having a stirring blade attached to the shaft;
In the wood chip agitating / carrying-out device comprising the chip discharging rotator and a drive device for rotating the chip agitating rotator,
A hydraulic motor provided as the driving device;
An opening for discharging wood chips provided in a lower surface of the arc-shaped groove on the base end side of the rotating body for discharging chips;
An openable / closable lid for closing the opening;
A hydraulic actuator provided as a driving device for opening and closing the lid,
The hydraulic circuit that drives the hydraulic actuator closes the lid with hydraulic oil supplied in the forward rotation direction for carrying out the wood chip to the hydraulic motor, and opens the lid with hydraulic oil supplied in the reverse rotation direction. It has the structure which carries out.

According to a second aspect of the present invention, there is provided a wood chip stuffing machine having the wood chip agitating / unloading device according to claim 1 attached to a front arm of a self-propelled working machine in which an upper swing body is mounted on a lower travel body via a swing device. It is characterized by comprising.

  According to the first aspect of the present invention, if the clogging occurs when the wood chip is carried out by rotating the tip discharge rotating body having the screw blades provided on the shaft portion, the tip discharge rotating body is reversed. By doing so, the wood chip can be dropped and discharged from the opening. For this reason, the wood chip is prevented from being consolidated to the base end side of the chip discharge rotating body during reverse rotation, and clogging is eliminated. As a result, when the wood chip is clogged, it can be quickly recovered, and the wood chip can be efficiently stirred and carried out. Moreover, even when clogging occurs, the wood chip removal operation can be easily performed, and labor and time can be greatly reduced.

In addition, since the lid that automatically closes the opening is opened when the tip discharging rotor is reversed, and the lid is automatically closed during normal rotation, it is not necessary to manually open and close the lid. Efficiency improvement can be achieved.

  In addition, since the hydraulic oil used for forward and reverse rotation of the hydraulic motor is used as it is for opening and closing the lid opening and closing hydraulic actuator, it is used exclusively for forward and reverse state detection means for controlling the drive of the hydraulic actuator and for the hydraulic actuator. A control valve is not required, and the hydraulic circuit is simplified.

According to the second aspect of the present invention, since the wood chip agitating / unloading device is attached to the arm of the self-propelled working machine, it is possible to remove the wood chip from the place where the wood chips are collected or on the truck bed by the self-propelling and turning of the working machine and the front operation. A wood chip stuffing machine that can be introduced into the hopper and has high mobility can be realized.

  Also, by moving the wood chip agitating / carrying device to the opposite side of the wood chip discharge direction by the turning operation of the upper swing body, the net bag fed out while filling the wood chip from the discharge pipe into the net bag is left on the ground. The filling operation can be performed as it is. For this reason, it is not necessary to pull and move the net bag by hand or a crane little by little, and labor saving can be achieved.

It is a side view which shows one Embodiment of the wood chip stuffing machine by this invention. It is a side view which shows one Embodiment of the wood chip stirring carrying out apparatus of this invention. (A) is front sectional drawing of the wood chip stirring and carrying-out apparatus of FIG. 2, (B) is EE sectional drawing of (A). (A) is sectional drawing which shows the state which obstruct | occluded the opening part provided in the arc-shaped groove with the lid | cover in this Embodiment, (B) is sectional drawing which shows the state which open | released the lid | cover. (A) is a cross-sectional view showing another embodiment of the present invention with the lid closed, (B) is a cross-sectional view with the lid open, and (C) is a hydraulic circuit for opening and closing the lid. FIG.

  FIG. 1 is a side view showing an embodiment of a wood chip stuffing machine according to the present invention. Reference numeral 1 denotes a crawler-type lower traveling body constituting a lower traveling body of a self-propelled working machine, and a turning frame 3 a is installed on the lower traveling body 1 via a turning device 2. On the swivel frame 3a, a power unit 4 including an engine, a hydraulic pump driven by the engine, a generator, and the like, an operator cab 5, a counterweight 6, and the like are mounted to constitute the upper swivel body 3.

  Reference numeral 7 denotes a front attached to the revolving frame 3 a, and 8 denotes a wood chip stirring and carrying out device attached to the front 7. The front 7 is attached to the revolving frame 3a so as to be able to move up and down by a boom cylinder 10 which is a hydraulic cylinder, and is attached to the tip of the boom 9 so as to be vertically rotatable by an arm cylinder 12 which is a hydraulic cylinder. Arm 11 is provided.

  The wood chip stirring / unloading device 8 has a bracket 14 for attaching the wood chip stirring / unloading device 8 to the arm 11 on the back surface of the hopper 13, and the wood chip stirring / unloading device 8 is attached to the arm 11 by a pin 15. Install so that it can rotate up and down. Reference numeral 16 denotes a hydraulic cylinder attached to the arm 11 for rotating the wood chip agitating / carrying device 8 up and down. The piston rod has the other end of the first link 17 pinned at one end on the arm 11 and the hopper 13. It is commonly pinned to the other end of the second link 18 pinned at one end to the bracket 14. As shown in the side view of FIG. 2, the hopper 13 has a structure in which the side view is narrowed downward.

  3A is a front cross-sectional view of the wood chip stirring and carrying out apparatus of FIG. 2, and FIG. 3B is a cross-sectional view taken along line EE of FIG. 3A, reference numerals 13a and 13b denote drive device side end plates and chip discharge side end plates of the hopper 13, respectively. Reference numeral 13c denotes arc-shaped grooves provided in the bottom of the hopper 13 and having a semicircular cross section. Reference numeral 21 denotes a chip discharge rotating body fitted and supported in the arc-shaped groove 13c and having a base end portion attached in a cantilever manner by a bearing 22 provided on the driving device side end plate 13a. The tip discharging rotary body 21 has a base end portion of a shaft portion 21a rotatably supported by a bearing 22 and provided with screw blades 21b and 21c.

  2 and 3 (A) and 3 (B), reference numeral 24 denotes a tip stirring rotary member provided on the top of the tip discharge rotary member 21, and its shaft portion 24a is provided on both end plates 13a and 13b. It is supported by bearings 25 and 26 and attached. The tip stirring rotor 24 is configured by attaching a stirring blade 24c to a disc 24b provided with a space in a shaft portion 24a. As shown in FIG. 3B, each stirring blade 24c is formed by integrally forming a small-diameter blade portion a and a large-diameter blade portion b.

  In FIG. 2, reference numeral 28 denotes a driving device provided for rotating the tip discharging rotary member 21 and the tip stirring rotary member 24, and this driving device 28 is a hydraulic motor (attached to the end plate 13 a of the hopper 13. A drive motor 30 composed of an electric motor), an output sprocket 31 of the drive motor 30, a sprocket 32 fixed concentrically to the shaft portion 21a of the tip discharge rotating body 21, and a hook between these sprockets 31 and 32 The sprocket chain 33 rotated, the sprocket 34 provided separately from the sprocket 32 on the shaft 21a of the tip discharging rotator 21, the sprocket 35 provided on the shaft 24a of the tip stirring rotator 24, and these sprockets 34 and a sprocket chain 36 wound around. Therefore, the chip discharge rotating body 21 and the chip stirring rotating body 24 can be rotated simultaneously by the rotation of the drive motor 30.

  In FIG. 3A, reference numeral 38 denotes a circular chip discharge opening provided on the chip discharge side end plate 13b of the hopper 13, and this opening 38 is formed at the end of the arc-shaped groove 13c in the lower half inner periphery. Are provided continuously. Reference numeral 40 denotes a pipe mounting plate fixed to the outer surface of the end plate 13b by welding or the like. One end of the discharge pipe 41 is attached to the pipe attachment plate 40 by a bolt (not shown) concentrically with the opening 38. Of the screw blades 21b, 21c of the tip discharge rotor 21, the outer diameter of the screw blade 21c in the vicinity of the opening 38 and the portion located in the discharge pipe 41 is made smaller than the outer diameter of the screw blade 21b. The reason for this is to avoid clogging of the wood chips in the opening 38 as much as possible.

  42 is a net bag for chip filling, and this bag 42 is attached to the discharge pipe 41 so as to be detachable by a pressing band 43 covering one end side. A connecting member (not shown) such as a rope for preventing the presser band 43 from coming out of the discharge pipe 41 during the stuffing operation is detachable between the base side of the discharge pipe 41 and the presser band 43. Mounted.

  4A and 4B are cross-sectional views showing the structure of the proximal end portion of the tip stirring rotor 24 of the arc-shaped groove 13c, 13d is an opening provided on the lower surface of the arc-shaped groove 13c, and 44 is this It is a lid for opening and closing the opening 13d. Reference numeral 45 denotes a lid mounting bracket fixed to the lower surface of the arc-shaped groove 13c, and 46 denotes a pin for pivotally mounting the mounting plate 44a provided on the lid 44 to the bracket 45. Reference numeral 47 denotes a bracket provided on the lower surface of the arc-shaped groove 13c for fixing the free end of the lid 44, and 44b denotes a fixing plate provided on the free end side of the lid 44. A fixing pin 48 is provided on each of the bracket 47 and the fixing plate 44b. Have pin holes 47a, 44d. A handle 44c is gripped by an operator when the lid 44 is opened and closed.

  When packing wood chips into the chip filling net bag 42 using the wood chip stirring and unloading device 8, as shown in FIGS. 3 (A) and 4 (A), the opening 13d is covered with a lid 44. It is closed and fixed with the fixing pin 48. As shown in FIG. 1, the wood chip stuffing machine is brought close to the accumulated wood chip 20 by running and turning of the work machine, and the wood chip is picked up by the hopper 13 by operating the front 7 and the hopper 13 Introduce in.

  Further, before or after the wood chip is introduced into the hopper 13, the opening end of the net bag 42 is put on the discharge pipe 41 in a contracted state as indicated by 42a as shown in FIG. At this time, the front end of the net bag 42 is located on the front end surface of the discharge pipe 41 as indicated by a two-dot chain line 42b. In this state, the presser band 43 is placed on the net bag 42, and the root portion of the discharge pipe 41 and the presser band 43 are connected by a detachable connecting member such as a rope.

  Then, the drive motor 30 is driven to rotate the tip stirring rotor 24 and the tip discharge rotor 21 simultaneously. At this time, the rotation direction of the chip discharging rotator 21 is a direction indicated by an arrow R1 in FIG. As a result, the screw blades of the tip discharging rotor 21 are obtained while stirring the wood chips in the hopper 13 by the stirring blades 24c (see FIGS. 3A and 3B) of the tip stirring rotor 24 and eliminating the stagnation. 3b and 21c, the wood chips are packed into the net bag 42 from the arc-shaped groove 13c through the opening 38 and the discharge pipe 41 as shown by the arrow c in FIGS. 3 (A) and 4 (A).

  In this stuffing operation, the swivel device 2 of the work machine is operated to swivel the wood chip agitating / carrying device 8 in the direction away from the net bag 42 (the direction indicated by the arrow X in FIG. 3A). Stuffing is performed with the bag 42 left unattended. At this time, resistance is imparted to the feeding of the net bag 42 by the presser band 43, so that a large amount of wood chips can be pushed into the net bag 42 and the wood chips can be filled with an appropriate filling condition.

  When the packing is completed, the presser band 43 is loosened, and the net bag 42 can be removed from the discharge pipe 41 by rotating the swivel device 2 of the working machine in a direction in which the wood chip stirring and unloading device 8 moves away from the net bag 42. . Thus, after removing the net bag 42 from the discharge pipe 41, the opening end of the net bag 42 is closed with a string or the like, thereby completing a filter in which the wood chip is filled in the net bag 42.

  When the wood chip is clogged during the wood chip filling operation, the bracket 47 and the pin holes 47a and 44d of the fixing plate 44b of the free end of the lid 44 are used as shown in FIG. The fixing pin 48 is removed to open the opening 13d. Then, the chip discharging rotator 21 is reversed as indicated by an arrow R2, and the wood chip is fed back in the direction indicated by the arrow d, that is, the direction opposite to the discharging direction to drop the wood chip from the opening 13d. As a result, it is possible to prevent the wood chip from being compacted on the base end side of the chip discharge rotating body 21 and clogging associated therewith. After the clogging is eliminated, the opening 13d is closed with the lid 44 with the handle 44c, and the fixing pin 48 is inserted into the pin holes 47a and 44d of the bracket 47 and the fixing plate 44b to fix the lid 44 in the closed state. To do.

  As described above, according to the present embodiment, the opening 13d is provided on the base end side of the chip discharge rotating body 21 in the arc-shaped groove 13c, and when the wood chip is clogged, the lid 44 is opened. By reversing the tip discharge rotating body 21, clogging of wood chips can be eliminated. For this reason, the wood chip is prevented from being consolidated on the base end side of the chip discharge rotating body 21 during reverse rotation, and clogging is eliminated. As a result, when the wood chip is clogged, it can be quickly recovered, and the wood chip can be efficiently stirred and carried out. Moreover, even when clogging occurs, the wood chip removal operation can be easily performed, and labor and time can be greatly reduced.

  In addition, the wood chip stirring / unloading device of the present invention may be configured as a stationary type. However, in this embodiment, the wood chip stirring / unloading device 8 is attached to the arm 11 of the self-propelled working machine so as to be vertically rotatable. Therefore, it can be introduced into the hopper 13 from the place of the wood chips 20 accumulated by the self-propelled or swiveling of the working machine or the operation of the front 7 or from the truck bed, realizing a highly mobile wood chip stuffing machine. it can.

  Further, by moving the wood chip agitating / carrying device 8 to the opposite side of the wood chip discharge direction by the turning operation of the upper swing body 3, the net bag fed out while filling the wood chip into the net bag 42 from the discharge pipe 41. 42 can be filled while being left on the ground. For this reason, it is not necessary to pull and move the net bag by hand or a crane little by little, and labor saving can be achieved.

  FIG. 5 (A) is a cross-sectional view showing another embodiment of the present invention with the lid closed, and FIG. 5 (B) is a cross-sectional view similarly showing the lid open. Reference numeral 44 denotes a lid that is rotatably attached around a hinge 50, and 51 is a hydraulic actuator that opens and closes the lid 44. In this example, a hydraulic cylinder is used as the hydraulic actuator. The hydraulic cylinder 51 has a bottom end pivotally attached to a bracket 52 provided on the lower surface of the arc-shaped groove 13c by a pin 53 so as to be pivotable up and down, and one end of a link 54 is connected to the tip of a piston rod by a pin 55. The other end of 54 is connected to a bracket 56 provided on the lid 44 by a pin 57.

  In this configuration, by extending the hydraulic cylinder 51, as shown in FIG. 5A, the opening 13d provided in the arc-shaped groove 13c is closed by the lid 44, and the hydraulic cylinder 51 is contracted, so that FIG. As shown in B), the opening 13d can be opened.

  FIG. 5C is a hydraulic circuit diagram showing a preferred hydraulic circuit for opening and closing the lid. A hydraulic circuit 60 is supplied with hydraulic oil (indicated by an arrow e) when the drive motor 30 is rotated forward, and a hydraulic circuit 61 is supplied with hydraulic oil (indicated by an arrow f) when rotated reversely. 62 is a branch circuit branched from the forward rotation side hydraulic circuit 60 and connected to the bottom chamber 51a of the hydraulic cylinder 51, and 63 is a branch circuit branched from the reverse rotation side hydraulic circuit 61 and connected to the rod chamber 51b of the hydraulic cylinder 51. .

  In FIG. 5 (C), when hydraulic fluid is supplied to the forward rotation side hydraulic circuit 60, the tip discharge rotating body 21 rotates forward as indicated by an arrow R1 as shown in FIG. The tip is moved in the direction of discharging from the arcuate groove 13c as indicated by an arrow c. At this time, in FIG. 5C, since the hydraulic oil is supplied to the bottom chamber 51a of the hydraulic cylinder 51 through the branch circuit 62 as shown by the arrow g, the hydraulic cylinder 51 is in an extended state, and the lid 44 is opened to the opening 13d. Keep the closed state.

  On the other hand, in FIG. 5C, when the hydraulic oil is supplied to the reverse hydraulic circuit 61, the tip discharge rotating body 21 reverses as shown by the arrow R2 as shown in FIG. The tip is moved in the reverse direction to the proximal end side of the arc-shaped groove 13c as indicated by an arrow d. At this time, in FIG. 5C, since the hydraulic oil is supplied to the rod chamber 51b of the hydraulic cylinder 51 through the branch circuit 63 as shown by the arrow h, the hydraulic cylinder 51 is in a contracted state and the lid 44 is opened. . In this way, when the wood chip is clogged, the opening 13d provided in the arc-shaped groove 13c on the base end side of the chip discharge rotating body 21 is opened, so that the wood chip falls to prevent clogging. The

  When the present invention is carried out, a control valve for the hydraulic cylinder 51 is provided as an opening / closing means for the hydraulic cylinder 51 in addition to the control valve of the drive motor 30, and for example, the hydraulic pressure of the forward rotation side hydraulic circuit 60 and the reverse rotation side hydraulic circuit 61 is detected. The control signal of the hydraulic cylinder 51 can be switched using the detection signal. However, as shown in FIG. 5C, the circuits 62 and 63 branched from the hydraulic circuits 60 and 61, respectively, are connected to the bottom chamber 51a and the rod chamber 51b of the hydraulic cylinder 51, so that forward rotation and reverse rotation are achieved. The state detecting means and the control valve dedicated to the hydraulic cylinder 51 are not required, and the hydraulic circuit is simplified.

  It is also possible to adopt a configuration in which a hydraulic motor is provided as a hydraulic actuator for opening and closing the lid 44, and the hydraulic motor is connected to the link 54 using an expansion member such as a screw rod.

  Although the present invention has been described above with reference to the embodiment, various changes and additions can be made without departing from the scope of the present invention when the present invention is implemented.

  1: Lower traveling body, 2: Turning device, 3: Upper turning body, 3a: Turning frame, 4: Power unit, 5: Driver's cab, 6: Counterweight, 7: Front, 8: Wood chip stirring and unloading device, 9: Boom, 10: Boom cylinder, 11: Arm, 12: Arm cylinder, 13: Hopper, 13a, 13b: End plate, 13c: Arc groove, 13d: Opening, 14 bracket, 15: Pin, 16: Hydraulic cylinder, 20 : Integrated wood chips, 21: Chip discharging rotor, 21a: Shaft, 21b, 21c: Screw blade, 22: Bearing, 24: Chip stirring rotor, 25, 26: Bearing, 28: Drive device, 30 : Drive motor, 38: opening, 40: pipe mounting plate, 41: discharge pipe, 42: net bag for tip filling, 43: presser band, 44: lid, 46: pivot pin, 48 Fixing pins, 50: hinge, 51: hydraulic cylinder (hydraulic actuator), 60: Forward hydraulic circuit, 61: reverse-side hydraulic circuit, 62 and 63: the branch circuit

Claims (2)

A hopper that accepts wood chips,
An arcuate groove provided at the bottom of the hopper;
A circular opening provided continuously to the arc-shaped groove on the chip discharge side end plate of the hopper;
A discharge pipe to which one end is fixed and attached to the chip discharge side end plate, and a chip filling net bag is attached;
A tip discharge rotating body supported in the arc-shaped groove, extending from the arc-shaped groove to the inside of the discharge pipe, and provided with a screw blade on a shaft portion;
A tip stirring rotor provided above the tip discharging rotor in the hopper and having a stirring blade attached to the shaft;
In the wood chip agitating / carrying-out device comprising the chip discharging rotator and a drive device for rotating the chip agitating rotator,
A hydraulic motor provided as the driving device;
An opening for discharging wood chips provided in a lower surface of the arc-shaped groove on the base end side of the rotating body for discharging chips;
An openable / closable lid for closing the opening;
A hydraulic actuator provided as a driving device for opening and closing the lid,
The hydraulic circuit that drives the hydraulic actuator closes the lid with hydraulic oil supplied in the forward rotation direction for carrying out the wood chip to the hydraulic motor, and opens the lid with hydraulic oil supplied in the reverse rotation direction. A wood chip agitating / carrying-out apparatus characterized by comprising: A wood chip stuffing device characterized in that the wood chip agitating / unloading device according to claim 1 is attached to a front arm of a self-propelled working machine having an upper swing body mounted on a lower travel body via a swing device. Machine.

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