JP2013066862A - Self-propelled treatment machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a self-propelled treatment machine capable of carrying out a crushing treatment in the state of running at a sufficient crushing capacity even when the rotation of its engine temporarily decreases to an idling rotation speed.SOLUTION: The self-propelled treatment machine is characterized by including a crusher 12 driven by hydraulic oil supplied from a hydraulic pump 94 driven by an engine 93 to carry out a crushing treatment of an object to be treated, a transfer conveyor 11 that transfers the object to be treated to the crusher 12 from a feed port through which the object to be treated is charged thereinto from the outside of the machine body, a discharge conveyor 3 that discharges the treated object coming from the crusher 12 to the outside of the machine body, buttons 83Da1, 83Da2, 83Da3 that instruct the actions of the transfer conveyor 11, and causes the rotation speed of the engine 93 to return from an idling rotation speed to a predetermined work rotation speed in accordance with the instruction of the buttons 83Da1, 83Da2, 83Da3 to start the transfer conveyor 11.

Description

  The present invention relates to a self-propelled processing machine for processing an object to be processed such as a wood crusher, a jaw crusher, a shredder, and a soil improvement machine.

  The self-propelled processing machine performs predetermined processing on the workpiece to be processed at the work site to facilitate the construction and reduce the cost, or improve the workpiece, etc. Jaw crushers, shredders, soil improvement machines, etc. are known.

  As such a self-propelled processing machine, for example, Patent Document 1 (Patent No. 3967497) discloses a plurality of devices including a crushing device and an auxiliary machine that performs work related to crushing work by the crushing device, A plurality of hydraulic actuators that respectively drive a plurality of devices, at least one hydraulic pump that discharges pressure oil to the plurality of hydraulic actuators, an engine that drives the hydraulic pump, and the plurality of hydraulic actuators, respectively Disclosed is a self-propelled crusher that has multiple operating means and crushes large and small rocks, construction waste, etc. generated at the construction site, which is the object to be crushed, to a predetermined size on the site before transporting Has been.

Japanese Patent No. 3967497

  The above-described conventional self-propelled crusher reduces energy loss, noise, and exhaust gas by reducing the engine speed during the standby time when each device such as a crusher is unloaded. Among the plurality of devices, all of the predetermined devices including the crushing device are in an operational state in which all of the devices that are in operation are performing operations related to crushing or crushing operations on the material to be crushed. It is configured to detect whether or not the vehicle is in an idle operation state where no special operation is performed, and to control the engine speed to a preset idle speed when it is detected that the vehicle is in an idle operation state.

  However, in a self-propelled processing machine such as the above-described prior art, if a material to be crushed is input while the engine speed is controlled to an idle speed, the crushing apparatus cannot perform sufficient crushing capability. There is concern over the occurrence of overloading of the crushing device and variations in the quality of the processed material.

  The present invention has been made in view of the above, and a self-propelled processing machine capable of performing crushing processing in a state in which sufficient crushing ability can be exhibited even when the engine rotation speed has dropped to idle rotation speed. The purpose is to provide.

  (1) In order to achieve the above-described object, the present invention provides an engine, a hydraulic pump driven by the engine, and a processing apparatus that processes a workpiece by being driven by pressure oil supplied from the hydraulic pump. A conveying means for conveying the object to be processed from the input unit into which the object to be processed from the outside of the machine body is input, a discharge means for discharging the object to be processed from the processing apparatus to the outside of the machine body, A transport operation instruction means for instructing the operation of the transport means, and a control for returning the engine speed from an idle speed to a predetermined work speed in conjunction with a start instruction for the transport means by the transport operation instruction means. And control means for performing the above.

  Thereby, the crushing process in the state which can exhibit sufficient crushing capability can be performed, and the dispersion | variation in the quality of a processed material can be suppressed.

  (2) In the above (1), preferably, the control means controls the engine speed to a predetermined idle speed in conjunction with a stop instruction of the transport means by the transport operation instruction means. And

  (3) In the above (2), preferably, the control means sets the rotation speed of the engine in advance when a predetermined time has elapsed from an instruction to stop the conveying means by the conveying operation instruction means. It shall be controlled to a predetermined idle speed.

  (4) In the above (2), preferably, the control means controls the rotation speed of the engine when a stop instruction signal for the conveying means is issued for a predetermined time by long-pressing the conveying operation instruction means. It shall be controlled to a predetermined idle speed.

  According to the present invention, even if the engine speed once falls to the idle speed, the engine speed is returned to the predetermined work speed before the object to be crushed, so that sufficient crushing ability can be exhibited. Crushing treatment can be performed.

It is a side view showing the whole composition of the self-propelled wood crusher concerning a 1st embodiment. It is a top view which shows the whole structure of the self-propelled wood crusher which concerns on 1st Embodiment. It is a see-through | perspective side view which shows the detailed structure of the crushing device vicinity with which the self-propelled wood crusher shown in FIG. 1 was equipped. It is a figure which shows the external appearance structure at the time of the door opening of an operation panel. It is a figure which shows the external appearance structure of a radio | wireless operation apparatus. It is a functional block diagram of the control apparatus with which the self-propelled wood crusher of this Embodiment was equipped. It is a figure which shows the case where the message during engine idle is displayed on the display part of the operation panel. It is a processing flow which shows feeder stop control by the control apparatus of 1st Embodiment. It is a processing flow which shows feeder stop control by the control apparatus of the modification of 2nd Embodiment.

  Hereinafter, taking a self-propelled wood crusher as an example of a self-propelled processing machine, it explains in detail, referring to drawings.

<First Embodiment>
A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a side view showing the overall configuration of the self-propelled wood crusher according to the present embodiment, and FIG. 2 is a plan view thereof. 3 is a perspective side view showing a detailed structure in the vicinity of the crushing device 12 provided in the self-propelled wood crusher shown in FIG. In the following, the directions corresponding to the left and right in FIGS. 1 and 2 are the rear and front of the wood crusher.

  1 and 2, the self-propelled wood crusher of the present embodiment is provided on the traveling body 1 and the traveling body 1 that enable self-running, and the crushing function component that crushes the received object to be crushed. 2. A discharge conveyor 3 that conveys the crushed material crushed by the crushing function component 2 and discharges it outside the machine, a hydraulic pump 94 that discharges pressure oil to an engine that is a power source of each mounted device and a driving device of each part (Refer FIG. 4 later) etc., and is roughly constituted by a power unit (power unit) 4 and the like.

  The traveling body 1 includes a track frame 5, drive wheels 6 and driven wheels 7 provided at both front and rear ends of the track frame 5, and a drive device (travel hydraulic motor) 8 in which an output shaft is connected to the shaft of the drive wheel 6. And a crawler belt (an endless track crawler belt) 9 wound around the driving wheel 6 and the driven wheel 7. A main body frame 30 is provided on the track frame 5, and the main body frame 30 supports the crushing function component 2, the discharge conveyor 3, the power unit 4, and the like. The traveling body 1 may be a wheel type constituted by a plurality of tires instead of the illustrated crawler type.

  The crushing function constituent unit 2 includes a hopper 10 that receives an object to be crushed, a feed conveyor 11 (see FIG. 2) as a means for conveying the object to be crushed accommodated in the hopper 10, and the feed conveyor 11. The crushing device 12 (see FIG. 3), which is a processing device that performs crushing processing on the material to be crushed, and the pressure for pressing the material to be crushed introduced into the crushing device 12 before the crushing device 12 against the feed conveyor 11 And a roller device 13 (see FIG. 3).

  The feed conveyor 11 includes a sprocket-like drive wheel 15 provided on the crushing rotor 32 side (crusher front side), which will be described later, a driven wheel (not shown) provided on the opposite side (crusher rear side), and the conveying direction thereof. It is provided between a drive wheel 15 and a driven wheel provided at both ends, and a transport body (transport belt, chain belt) 16 arranged in a plurality of rows (for example, 4 rows, see FIG. 2) in the width direction. Yes.

  The driven wheel is supported by a bearing 18 provided at the rear portion of the side wall body 17 of the hopper 10, and the driving wheel 15 is a side frame (crusher frame) 19 (see FIG. 3) of the crushing device 12 provided on the front side of the side wall body 17. ) Is supported by a bearing 84 provided. As a result, the feed conveyor 11 extends substantially horizontally from the lower part of the hopper 10, that is, from the inside of the side wall body 17 of the hopper 10 to the vicinity of the crushing rotor 32 (described later), and the side frame 19 of the hopper 10 and the crushing device 12. It is stored inside.

  The rotating shaft 20 of the driving wheel 15 of the feed conveyor 11 is connected to the output shaft of a driving device (not shown) provided on the outer side in the width direction than the bearing through a coupling or the like. The feed conveyor 11 circulates and drives the transport body 16 between the drive wheel 15 and the driven wheel by rotationally driving the drive wheel 15 with a drive device (not shown).

  The pressure roller device 13 is provided so as to be close to the rear side of the crushing rotor 32 (described later) and on the upper portion of the feed conveyor 11 so as to face the transport surface thereof, and is transported on the feed conveyor 11. The crushed material is introduced toward the crushing rotor 32 while pressing the material to be crushed from above. The pressing roller device 13 has a rotating shaft 22 pivotally supported by a bearing (not shown) provided on the side frame 19 above the crushing device 12, so that it can rotate in a vertical plane (in FIG. 3). A support member (arm) 23 supported so as to be swingable in the vertical direction, a presser roller 24 rotatably provided to the support member 23, and a hydraulic cylinder 28 that drives the support member 23 to rotate. ing.

  The support member 23 includes a rotation shaft 22 at one end and a pressing roller 24 at the other end (one end on the front end side). The lower end surface of the support member 23 (the end surface facing the upper portion of the crushing rotor 32) is curved in an arc shape, and this curved portion includes a curved plate constituting a part of the crushing chamber 31 described later. 27 is attached. On the other hand, the pressing roller 24 mounting portion of the support member 23 is formed in an arc shape having a diameter smaller than the diameter of the pressing roller 24, and the outer peripheral surface of the pressing roller 24 protrudes from the support member 23. The dimension of the pressing roller 24 in the width direction (the direction orthogonal to the paper surface in FIG. 3) is set to be equal to or larger than the width of the conveying surface of the feed conveyor 11.

  The presser roller 24 has a drive device (not shown) built in its body, and this drive device has a peripheral speed substantially the same as the transfer speed of the object to be crushed on the transfer surface of the feed conveyor 11. The object to be crushed on the feed conveyor 11 that is rotationally driven and pressed down is introduced into the crushing chamber 31 in cooperation with the feed conveyor 11.

  The hydraulic cylinder 28 is rotatably connected to a bracket 29 whose bottom end is fixed to the side frame 19 via a pin 53, and its rod end is rearward of the support member 23 (left side in FIG. 3). It is connected to a bracket 54 provided at the distal end portion via a pin 82 so as to be rotatable. By the expansion / contraction operation of the hydraulic cylinder 28, the pressing roller device 13 can be rotated about the rotation shaft 22, lifted and lowered with respect to the feed conveyor 11, and separated or approached.

  As shown in FIG. 3, the crushing device 12 is located at a substantially central portion in the longitudinal direction of the main body frame 30, and is provided on the radially outer side of the crushing rotor 32 and the crushing rotor 32 that rotates at high speed in the crushing chamber 31. An anvil (fixed blade) 33 is provided. Around the crushing rotor 32, the forward rotation direction of the crushing rotor 32 (clockwise direction in FIG. 3, crushing) from the part to which the material to be crushed is supplied by the feed conveyor 11 and the press roller 24 (the rear part of the crushing device 12). The curved plate 27 attached to the support member 23, the anvil 33 and the curved plate 39 attached to the housing 41 (described later), and the screen (sieving member) 40 surround the crushing rotor 32 in the material distribution direction). The crushing chamber 31, which is a cylindrical space around which the crushing pieces circulate around the crushing rotor 32, is roughly defined by the curved plate 27, the anvil 33, the curved plate 39, the screen 40, and the like.

  The crushing rotor 32 is rotatably supported by a bearing (not shown) provided on a side frame 19 of the crushing device 12 or a support member (not shown) provided on the main body frame 30. A plurality of support members 34 and a crushing bit (impact plate or crushing blade) 35 attached with bolts or the like (not shown) on the front side in the forward rotation direction of each support member 34 are provided. When the crushing rotor 32 rotates in the forward rotation direction, the crushing bit 35 is disposed so that the blade surface thereof precedes the support member 34, and the crushing bit 35 is hit by the blade surface. In FIG. 3, one set of the crushing bit 35 and the support member 34 are shown as a representative.

  The housing 41 is supported so as to be pivotable in the front-rear direction about a pivot shaft 42 supported by a bearing (not shown) provided on the side frame 19 above the pivot shaft 22 of the pressure roller device 13 described above. It is rotated by a hydraulic cylinder 50. An anvil 33 and a curved plate 39 are disposed on the crushing chamber 31 side of the housing 41.

  The anvil 33 is attached to the upstream side in the normal rotation direction of the crushing rotor 32 (hereinafter referred to as the upstream side) with respect to the attachment portion of the curved plate 39 in the housing 41 via the support member 51, and is introduced into the crushing chamber 31. The collision surface on which the object to be crushed collides is arranged so as to face the crushed piece (object to be crushed) that circulates in the crushing chamber 31 as the crushing rotor 32 rotates. The support member 51 and the anvil 33 are attached to the housing 41 with bolts or the like (not shown).

  The front end of the housing 41 is connected to a support member 48 fixed to the crusher side cover 19 via a shear pin 49, and is fixed and held in a posture in which the anvil 33 faces the crushing chamber 31 during crushing work. When an excessive load is applied to the anvil 33 during the crushing process (hereinafter referred to as a normal crushing process) in a state where the housing 41 is in a crushing posture, The housing 41 is pivoted about the pivot shaft 42 so that the anvil 33 is retracted from the crushing chamber 31 and the damage of each part is prevented. At this time, the retraction of the housing 41 is detected by a limit switch or the like (not shown), and a detection signal at the time of detecting the retraction is sent to the controller, and the driving device of the crushing rotor 32 is stopped. The command signal to be output is output.

  The screen 40 is provided on the downstream side in the crushed material distribution direction of the curved plate 39 and the radially outer side of the crushing rotor 32 when the housing 41 is in the crushing posture, and is curved substantially along a circle concentric with the crushing rotor 32. Yes. Further, the screen 40 has a plurality of discharge holes (not shown) that penetrate from the inner diameter surface facing the crushing rotor 32 to the opposite surface and discharge the crushed material to the outside of the crusher. The crushed material that has become smaller than the diameter of the discharge hole (not shown) is discharged out of the crusher.

  Below the crushing rotor 32, a frame-type screen support member (screen holder) 63 that holds the screen 40 at the outer peripheral side position of the crushing rotor 32 is provided. The screen support member 63 has a rear end portion fixed to a side member 19 or a support member (not shown) provided on the side frame 19 or the main body frame 30 via a rotation shaft 64, and rotates up and down around the rotation shaft 64. It is configured to move, and is driven forward and backward with respect to the crushing rotor 32 by a link mechanism 69 provided at the front end.

  The link mechanism 69 converts the expansion / contraction operation of the hydraulic cylinder 66 whose bottom end portion is rotatably connected to the side cover 19 into an advance / retreat operation of the screen support member 63 with respect to the crushing rotor 32. A slide link 70 provided at the rod-side end and moving along the expansion / contraction direction of the hydraulic cylinder 66, and one end (upper end in FIG. 2) are connected to the other end (in the circumferential direction of the screen support member 63). A holding link 72 is rotatably connected to the slide link 70 via a pin 71 at the other end (lower end in FIG. 2). I have. Reference numeral 73 denotes a guide member that guides the moving direction of the slide link 70 and supports a longitudinal load that the slide link 70 receives from the holding link 72.

  During the crushing operation, the hydraulic cylinder 66 extends and the slide link 70 and the holding link 72 of the link mechanism 69 are bent at a substantially right angle, and the screen support member 63 is positioned closest to the crushing rotor 32. Become. As the hydraulic cylinder 66 contracts from this state, the slide link 70 and the holding link 72 rotate and gradually open, and the screen support member 63 gradually moves (lowers) away from the crushing rotor 32. When the hydraulic cylinder 66 is in the most contracted state, the slide link 70 and the holding link 72 are almost fully extended, and the screen support member 63 is in a position farthest from the crushing rotor 32. As described above, when the screen support member 63 is pivoted and lowered downward about the pivot shaft 64 by the link mechanism 69, the screen support member 63 is removed from a notch (not shown) formed in the lower portion of the side frame 19. The screen 40 placed on the screen can be pulled out to the side, and the screen 40 can be easily replaced.

  The discharge conveyor 3 is supported by a support member 75 that protrudes from the power unit 4 at a portion near the discharge side (front side), and the opposite side (rear side) portion is supported by the main body frame 30. . As a result, the discharge conveyor 3 passes from below the crushing device 12 and below the power unit 4, and is disposed so as to rise upward from below the power unit 4 to the front side of the crusher. The discharge conveyor 3 includes a conveyor cover 78 provided on a conveyor belt (not shown) wound between a driving wheel and a driven wheel (both not shown) provided at both ends in the longitudinal direction (front-rear direction). Yes. The drive wheels (not shown) of the discharge conveyor 3 are connected to the output shaft of a drive device (hydraulic motor for discharge conveyor) 79 provided on the outer side in the width direction of the bearing via a coupling or the like. By rotating the device 79, the conveyor belt is circulated and driven between the driving wheel and the driven wheel. In addition, a magnetic separator (not shown) is provided on the transport path of the discharge conveyor 3 to adsorb and remove metal such as nails and iron pieces mixed in the crushed material during transport. It is supposed to be.

  The power unit 4 is mounted on an end portion of the main body frame 30 on the front side in the longitudinal direction, and an operation panel for performing operation / setting, monitoring, etc. relating to traveling and crushing processing of the wood crusher is provided on a lower side surface thereof. 83 and a storage box 85 in which a wireless operation device 84 (described later) and the like are stored. A patrol light 86 is provided above the power unit 4 to notify the operator of various states of the machine body.

  FIG. 4 is a diagram illustrating an external structure of the operation panel when the door is opened, and FIG. 5 is a diagram illustrating an external structure of the wireless operation device.

  As shown in FIG. 4, the operation panel 83 includes a display unit 83A, an input unit 83B, an emergency stop switch 83C, a start / stop instruction unit 83D for operating devices, a supply / crushing operation unit 83E, a main switch 83F, an operation mode. A selection switch 83G, an operation means selection switch 83H, an alarm button 83I, an illumination button 83J, an engine speed setting switch 83K, an interlocking operation unit 83L, and the like are provided.

  The display unit 83A displays the operating status of the machine, various data, guidance, messages, and the like, and various input operations can be performed by a touch panel function or the like. As a message displayed on the display unit 83A, there is a message during engine idle control for controlling the engine 93 to the idling speed (see FIG. 7 later). The input unit 83B performs cursor movement, selection / determination, calling up a help screen, and the like on the setting screen displayed on the display unit 83A.

  The emergency stop switch 83C is a switch that immediately stops each operating device of the airframe in an emergency. The main switch 83F operates to turn on / off the electric system, start the engine, and the like. The operation mode selection switch 83G selects any one of a travel mode for performing a travel operation, a work mode for performing a crushing operation, and a maintenance mode set for maintenance. The selection switch 83H sets whether to enable either the operation panel 83 or a remote controller (not shown) as operation means. The alarm button 83I gives an instruction to sound an alarm sound, and the illumination button 83J gives an instruction to set the amount of illumination light or to turn it off. The engine speed setting switch 83K sets the engine speed by rotating the dial.

  The start / stop instruction unit 83D includes a stop button 83Da1, a normal rotation start button 83Da2, a reverse rotation start button 83Da3, and a stop / forward rotation of the pressure roller device 13 for instructing the stop, normal direction start, and reverse direction start of the feed conveyor 11, respectively. Stop button 83Db1, forward rotation start button 83Db2, reverse rotation start button 83Db3, and stop button 83Dc1, forward rotation start for instructing stop / forward rotation direction start / reverse rotation direction start of the crushing rotor 15, respectively. A button 83Dc2, a reverse rotation start button 83Dc3, and a start button 83Dd1 and a stop button 83Dd2 for instructing start / stop of the discharge conveyor 3 are arranged.

  The supply / crushing operation operating unit 83E includes a feeder speed adjustment dial (feeder speed adjusting means) 83Ea for adjusting the operation speed in the forward rotation direction of the feeder (feed conveyor 11 and pressing roller device 13), and crushing rotor 15 A crushing rotor speed adjustment dial 83Eb for adjusting the rotational speed in the forward rotation direction, and a cylinder operation changeover switch 83Ec for performing lock / free switching of the hydraulic cylinder 28 for raising and lowering the pressing roller device 13 are arranged.

  As shown in FIG. 5, the wireless operation device 84 includes a power on button 84 </ b> A and a power off button 84 </ b> B for instructing power on / off of the wireless operation device 84, and feeders (feed conveyor 11 and pressing roller device 13). Forward rotation start button 84C / reverse rotation start button 84D / stop button 84E for instructing normal direction start / reverse direction start / stop, ascending button 84F / press button 84G for instructing raising / lowering of the pressing roller device 13, wireless operation device A button operation switching button 84H for switching the roles of the 84 buttons 84A to 84G and an all stop button 84I for instructing stop of all functions including the engine of the self-propelled wood crusher are arranged.

  By operating the button operation switching button 84H, the power on button 84A is an alarm button, the forward rotation start button 84C / reverse rotation start button 84D is the forward button / reverse button of the right track of the traveling body, and the up button 84F / press button 84G is the left side of the traveling body. It can be switched to the forward and backward button functions of the track.

  FIG. 6 is a functional block diagram of a control device provided in the self-propelled wood crusher of the present embodiment.

  In FIG. 6, the control device 90 is based on an input circuit 90a to which an instruction signal output by an operation of a button or a switch from the operation panel 83 or the wireless operation device 84 is input, and an instruction signal input to the input circuit 90a. CPU 90b that performs various calculations, and the flow of pressure oil supplied from the hydraulic pump 94 to the drive device (not shown) of the feed roller 11 and the press roller 24 of the press roller device 13 using the calculation results of the CPU 90b as instruction signals An output circuit 90c for outputting to a solenoid valve group 92 having each solenoid valve (not shown) for controlling the control, and a communication circuit 90d for exchanging signals with other control systems such as the engine controller 91. Yes. Although not shown, the CPU 90b also has various functions such as storage of various information.

  The engine controller 91 includes an input circuit 91a, a CPU 91b, an output circuit 91c, and a communication circuit 91d. When the engine controller 91 receives an instruction signal regarding the engine speed from the control device 90, the engine controller 91 generates a control signal for an injector 93a provided in the engine 93 based on the instruction signal, and adjusts the fuel injection amount in the engine 93. By doing so, the engine speed is controlled.

  FIG. 8 is a processing flow showing engine speed control by the control device when the feeder is stopped.

  In FIG. 8, the controller 90 first receives a feeder stop instruction signal (in the operation panel 83, a feed conveyor stop instruction signal when the stop button Da1 is operated) from the operation panel 83 or the wireless operation apparatus 94 ( Step S10), a feeder stop instruction signal is output to the solenoid valve group 92 so as to stop the feeder by controlling the pressure oil to the feeder drive device (Step S20), and the counting of the elapsed time t after the operation is started (Step S10). S30). Then, it is determined whether or not the elapsed time t after the operation is longer than a predetermined reference time t0 (step S40). If the determination result is YES, the engine 93 is controlled to a predetermined idle speed. The engine idle control is performed by outputting an instruction signal to the engine controller 91 (step S50), and the engine idle control is being performed by displaying a message (see FIG. 7) on the display unit 83A of the operation panel 83 or lighting the patrol light 86. This is notified to the operator (step S60), and the process is terminated. When the determination result in step S40 is NO, the feeder normal rotation instruction signal (in the operation panel 83, the feed conveyor normal rotation start instruction signal when the normal rotation start button 83Da2 is operated) by the operation panel 83 or the wireless operation device 94. Is input (step S41). If the determination result is YES, an instruction signal is output to the solenoid valve group 92 so as to drive the feeder forward by controlling the pressure oil to the feeder drive device. (Step S42), the process ends. If the determination result in step S41 is NO, the processes in steps S30 and S41 are repeated until the determination result in step S40 is YES.

  The operation in the present embodiment configured as described above will be described.

  A heavy machine (hydraulic machine) equipped with an appropriate work tool such as grapple while operating the operation panel 83 or the wireless operation device 84 to drive the feed conveyor 11, the pressing roller device 13, the crushing rotor 32, and the discharge conveyor 3. When an object to be crushed is put into the hopper 10 by an excavator or the like, the object to be crushed is placed on the conveying belt 16 of the feed conveyor 11 and conveyed toward the crushing device 12 by the conveying belt 16 that is driven to circulate. When the object to be crushed is conveyed to the vicinity of the pressing roller device 13, the press roller 24 rides on the object to be crushed, and the object to be crushed is pressed against the conveying surface of the feed conveyor 11 by its own weight. In this way, the presser roller 24 introduces the material to be crushed into the crushing chamber 31 in cooperation with the feed conveyor 11 while the material to be crushed is sandwiched between the pressure roller 24 and the feed conveyor 11. At that time, the object to be crushed protrudes into the crushing chamber 31 in a cantilevered manner with the portion sandwiched between the presser roller 24 and the feed conveyor 11 as a fulcrum.

  A crushing bit 35 of a crushing rotor 32 that rotates at high speed collides with the object to be crushed protruding into the crushing chamber 31 from below, whereby the object to be crushed is roughly crushed. The fragments to be crushed and thus splashed into the crushing chamber 31 collide with the anvil 33 and are further crushed by the impact force. The crushed pieces continue to circulate in the crushing chamber 31 with the rotation of the crushing rotor 32 and collide with the crushing bit 35, the anvil 33, the inner wall surface of the crushing chamber 31, and the like. Then, the crushed pieces that have been pulverized to pass through the discharge holes of the screen 40 sequentially pass through the screen 40 and are discharged from the crushing chamber 31. The crushed material discharged from the crushing chamber 31 falls on the discharge conveyor 3, is transported by the discharge conveyor 3, and is discharged outside the machine.

  In such a self-propelled wood crusher, when the stop of the feed conveyor 11 is instructed by pressing the stop button 83Da1 of the operation panel 83, the feed conveyor 11 is stopped and the object to be crushed to the crushing device 12 is conveyed. Is stopped (steps S10 and S20 in FIG. 8), and thereafter, when a preset time (reference time t0) elapses, the engine speed is controlled to a predetermined idle speed (steps S40 and S40 in FIG. 8). S50). At this time, the operator is informed that the engine idle control is being performed by displaying a message (see FIG. 7) on the display unit 83A of the operation panel 83 or lighting the patrol light 86 (step S60 in FIG. 8). Thereafter, when the forward rotation start button 83Da2 is pressed to instruct the forward rotation drive of the feed conveyor 11, the control at the idle rotation speed of the engine 93 is released and the rotation speed during normal operation (crushing operation) The feed conveyor 11 is driven in the forward rotation direction, and conveyance of the object to be crushed to the crushing device 12 is started.

  Similarly, when the stop of the feed conveyor 11 is instructed by pressing the stop button 84E of the wireless operation device 84, the feed conveyor 11 is stopped and the conveyance of the object to be crushed to the crushing device 12 is stopped (see FIG. 8). Thereafter, when a preset time (reference time t0) elapses, the engine speed is controlled to a predetermined idle speed (steps S40 and S50 in FIG. 8). At this time, the operator is informed that the engine idle control is being performed by displaying a message (see FIG. 7) on the display unit 83A of the operation panel 83 or lighting the patrol light 86 (step S60 in FIG. 8). Thereafter, when the forward rotation start button 84C is pressed to instruct the forward drive of the feed conveyor 11, the control at the idle rotation speed of the engine 93 is released, and the rotation speed during normal work (during crushing work) The feed conveyor 11 is driven in the forward rotation direction, and conveyance of the object to be crushed to the crushing device 12 is started.

  When the forward rotation start button 83Da2 or the forward rotation start button 84C is pressed before the reference time t0 has elapsed after the stop button 83Da1 of the operation panel 83 or the stop button 84E of the wireless operation device 84 is pressed, the feed conveyor 11 rotates in the forward direction. To start the conveyance of the object to be crushed to the crushing device 12, and the engine rotation speed does not become a predetermined idle rotation speed, but the rotation speed during normal operation (crushing process) (work rotation) Number).

  If a foreign object such as a stone or metal is caught between the crushing bit 35 and the anvil 33 during the crushing process, an excessive load is applied from the crushing bit 35 to the anvil 33, and the load is applied to the housing. It is transmitted to the shear pin 49 that connects 41 and the support member 48. In this way, when an excessive load is applied to the anvil 33 and an excessive load is applied to the shear pin 49, the shear pin 49 is broken and the restraint of the housing 41 is released, and the anvil 33 is removed from the crushing chamber 31. The housing 41 rotates about the rotation shaft 42 so as to retract. Further, when rotation retreat of the housing 41 is detected by a sensor or the like (not shown), the wood crusher crushes the object to be crushed, that is, loads the object to be crushed (operation of the feed conveyor 11), rotates the crushing rotor 32, and the like. To stop.

  The effect in this Embodiment comprised as mentioned above is demonstrated.

  The self-propelled crusher in the prior art aims to reduce energy loss, noise, and exhaust gas volume by reducing the engine speed during the standby time when each device such as a crusher is unloaded. Among the plurality of devices, all of the predetermined devices including the crushing device that are in an operating state are in an actual operating state in which operations related to crushing or crushing operations are being performed on the object to be crushed or such It is configured to detect whether or not the engine is in an idle operation state, and to control the engine speed to a preset idle speed when it is detected that the engine is in the idle operation state. However, in a self-propelled processing machine such as the above-described prior art, if a material to be crushed is input while the engine speed is controlled to an idle speed, the crushing apparatus cannot perform sufficient crushing capability. There is concern over the occurrence of overloading of the crushing device and variations in the quality of the processed material.

  On the other hand, in the present embodiment, the buttons 83Da1, 83Da2, 83Da3 for instructing the stop, normal rotation direction activation, and reverse rotation direction activation of the feed conveyor 11 and the forward rotation of the feeder (feed conveyor 11 and the pressing roller device 13). The engine 93 is controlled from a predetermined idle speed to a predetermined work speed based on instructions by operating the buttons 84C, 84D, and 84E for instructing direction start / reverse direction start / stop. Since the crushing process can be performed in a state where sufficient crushing ability can be exhibited even if the engine speed drops to the idling speed once, it is possible to suppress variations in the quality of the processed material. it can.

  That is, when the normal rotation driving button 83C2 or the normal rotation starting button 84C is pressed to instruct the normal rotation driving of the feed conveyor 11, the control at the idle rotation speed of the engine 93 is canceled and the normal operation (crushing) is performed. The rotational speed of the crushing rotor 32 of the crushing apparatus 12 is sufficiently restored before the material to be crushed is charged into the crushing apparatus 12 by the forward rotation drive of the feed conveyor 11. It becomes possible to perform the crushing process in a state where sufficient crushing ability can be exhibited, and the variation in the quality of the processed product can be suppressed.

  Further, in a self-propelled processing machine such as the prior art, there is a concern that even if it is actually in an idle operation state, it is determined that it is in an actual operation state depending on its operation state. There has been a problem that control for reducing the engine speed to the idle speed is not performed, and energy loss, noise, and exhaust gas amount cannot be reduced. On the other hand, in the present embodiment, after the stop instruction of the feed conveyor 11 by pressing the stop button 83Da1 of the operation panel 83 or the stop button 84E of the wireless operation device 84, the rotational speed of the engine 93 is set in advance. Since the engine speed is controlled to the determined idle speed, the engine speed can be more reliably reduced to the idle speed.

<Second Embodiment>
A second embodiment of the present invention will be described with reference to FIG.

  FIG. 9 is a processing flow showing feeder stop control by the control device in the present embodiment. In the figure, the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In FIG. 9, the control device 90 first sends a feeder stop instruction signal (when the stop button Da1 is operated on the operation panel 83 by operating the feeder stop buttons (stop buttons Da1, 84E) of the operation panel 83 or the wireless operation device 94). When a conveyor stop instruction signal is input (step S110), an instruction signal is output to the electromagnetic valve group 92 to control the pressure oil to the feeder drive device and stop the feeder (step S120), and a feeder stop button The counting of the continuous pressing time t is started (step S130). Then, it is determined whether the elapsed time after operation t is longer than a predetermined reference time t1 (step S140). If the determination result is YES, the engine speed of the engine 93 is controlled to a predetermined idle speed. The engine idle control is performed by outputting an instruction signal to the engine controller 91 (step S150), and the engine idle control is being performed by displaying a message (see FIG. 7) on the display unit 83A of the operation panel 83 or lighting the patrol light 86. This is notified to the operator (step S160), and the process is terminated. If the determination result in step S140 is NO, it is determined whether the operation panel 83 or the feeder stop button of the wireless operation device 94 has been released (step S141). If the determination result is YES, the process ends. . If the determination result in step S141 is NO, the processes in steps S130 and S140 are repeated.

  Other configurations are the same as those of the first embodiment.

  In the present embodiment configured as described above, the same effects as those of the first embodiment can be obtained.

1 traveling body 2 crushing function component 3 discharge conveyor 4 power unit (power unit)
DESCRIPTION OF SYMBOLS 10 Hopper 11 Feed conveyor 12 Crushing device 13 Press roller device 16 Conveyance body (conveyance belt, chain belt)
19 Side frame (crusher frame)
24 Presser roller 28 Hydraulic cylinder 31 Crushing chamber 32 Crushing rotor 33 Anvil (fixed blade)
35 Crushing bit 39 Curved plate 40 Screen (sieving member)
41 Housing 83 Operation panel 84 Wireless operation device 85 Storage box 86 Patlite

Claims (4)

Engine,
A hydraulic pump driven by the engine;
A processing device that is driven by pressure oil supplied from the hydraulic pump to perform processing on the workpiece;
Conveying means for conveying the object to be processed from the input unit into which the object to be processed from the outside of the machine body is input;
Discharging means for discharging the processed material from the processing apparatus to the outside of the machine body;
Conveying operation instruction means for instructing the operation of the conveying means;
Control means for performing control to return the engine speed from an idle speed to a predetermined work speed in conjunction with a start instruction of the transport means by the transport operation instruction means. Self-propelled processing machine. In the self-propelled processing machine according to claim 1,
The control means controls the engine speed to a predetermined idle speed in conjunction with an instruction to stop the conveying means by the conveying operation instruction means. In the self-propelled processing machine according to claim 2,
The control means controls the engine rotation speed to a predetermined idle rotation speed when a predetermined time has elapsed from a stop instruction of the transfer means by the transfer operation instruction means. Machine. In the self-propelled processing machine according to claim 2,
The control means controls the engine rotational speed to a predetermined idle rotational speed when a stop instruction signal for the transporting means is issued for a predetermined time by long-pressing the transport operation instructing means. A self-propelled processing machine.

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