JP2013248572A - Crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crusher which is capable of shortening the release time when the protection means of an anvil functions.SOLUTION: A crusher includes an anvil frame 40 which is installed so as to hold an anvil 34 and so as to be freely rotated to a crushing device frame 20, a wear plate 61 which is installed at the crushing device frame 20 and on which the anvil frame 40 sits, a shear pin 43 which releases a crushing chamber 27 by allowing the rotation movement of the anvil frame 40 when the impact force which exceeds the tolerance acts on the anvil 34, and a through-hole 65 which is installed at the crushing device frame 20 along the outer peripheral surface 66 of the wear plate 61 and which is closed by the anvil frame 40 when the anvil frame 40 sits on the wear plate 61 and which exposes itself by rotating the anvil frame 40.

Description

  The present invention relates to a crusher for crushing an object to be crushed.

  As a kind of crusher, a crushing rotor with a plurality of crushing bits provided on the outer peripheral surface is rotated at high speed in the crushing chamber, and the object to be crushed is struck by impact with a crushing bit or an anvil (fixed blade) provided in the crushing chamber There is what is crushed (see Patent Document 1).

JP 2011-11193 A

  The crushing rotor of a crusher to which the present invention is applied hits and crushes the object to be crushed using the moment of inertia of the crushing rotor itself in addition to the rotational power given from the power source. In the case of wood-based crushed objects that are mainly assumed to be crushed, the crushing operation proceeds while the crushing rotor absorbs the energy of the crushed rotor appropriately, so there is usually a force applied between the anvil and the crushing bit. It does not increase rapidly. However, if a foreign object that is difficult to crush, such as an iron block mixed in the material to be crushed, is caught between the anvil and the crushing bit, the inertial force of the crushing rotor momentarily acts on the anvil, and excessive impact force is applied to the anvil. It will take.

  Therefore, in the crusher of Patent Document 1, the anvil frame that holds the anvil is rotatably supported and held by a shear pin (shearing pin) that is a protection means. According to this configuration, even if an excessive impact force is momentarily applied to the anvil due to a foreign object mixed in the object to be crushed between the anvil and the crushing bit, the shear pin is cut and the anvil frame is removed. Rotating, the crushing chamber is opened and the foreign matter is discharged.

  However, when the anvil frame rotates and the crushing chamber opens, the crushed material (wood chips) in the crushing chamber is released together with the foreign matter, and the crushed material accumulates on the structure around the opening. In particular, if crushed material accumulates on the mating member that normally contacts the anvil frame, the anvil frame cannot be completely closed because the crushed material is sandwiched between the anvil frame and the mating member. To close it, the crushed material near the opening must be cleaned. However, the space around the crushing chamber opening to be cleaned is narrow and difficult to access because it is surrounded by various structures. Needed.

  This invention is made | formed in view of said situation, and it aims at providing the crusher which can shorten the recovery time when the protection means of an anvil functions.

  In order to achieve the above object, the first invention is a crushing device frame, a crushing rotor provided rotatably with respect to the crushing device frame, a crushing chamber for accommodating the crushing rotor, and rotation of the crushing rotor. In a crusher provided with an anvil provided on a track via a gap, an anvil frame that holds the anvil and is provided so as to be rotatable with respect to the crushing device frame, and is provided on the crushing device frame. A seat on which the frame is seated, a rotating means of the anvil frame when an impact force exceeding a permissible value is applied to the anvil, and the anvil protective means for opening the crushing chamber; and When the crushing device frame is provided along the seating surface of the anvil frame, and the anvil frame is seated on the seat portion Have been blocked by serial anvil frame, said anvil frame is characterized in that a through-hole exposed by rotating.

  According to a second aspect, in the first aspect, the through hole is inclined downward toward the outside of the crushing chamber.

  According to a third aspect, in the second aspect, at least a part of the upper surface of the seating portion is an inclined surface that is continuous with the lower surface of the through hole.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the crushing device is configured such that the through hole extends along at least a rear end portion in a normal rotation direction of the crushing rotor in a seating surface of the seating portion. It is provided in the frame.

  According to a fifth invention, in any one of the first to third inventions, the through hole is provided in the crushing device frame along the entire length of the seating surface of the seating portion.

  ADVANTAGE OF THE INVENTION According to this invention, the recovery time when the protection means of an anvil functions can be shortened.

It is a side view showing the whole crusher structure concerning a 1st embodiment of the present invention. It is a top view which shows the whole structure of the crusher which concerns on the 1st Embodiment of this invention. It is the side view which extracted and represented the principal part inside the crusher main-body part with which the crusher which concerns on the 1st Embodiment of this invention was equipped. It is the side view which extracted and represented the principal part inside the crusher main-body part with which the crusher which concerns on the 1st Embodiment of this invention was equipped, Comprising: It is a figure showing the state which the protection means of the anvil functioned. It is a fragmentary arrow sectional view of the crushing device frame by the VV line in Drawing 4, and a wear plate. It is the side view which extracted and represented the principal part inside the crusher main-body part with which the crusher which concerns on the 2nd Embodiment of this invention was equipped, Comprising: It is a figure corresponding to FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a side view showing the overall structure of a crusher according to a first embodiment of the present invention, and FIG. 2 is a plan view thereof. In the present specification, the right and left in FIG.

  The crusher illustrated in FIG. 1 and FIG. 2 is a machine that crushes a material to be crushed mainly for reuse and volume reduction of waste. Examples of shredders to be shredded, that is, shredded materials, include pruned branches and thinned wood that occur in forests, wood such as waste wood that is generated when buildings are demolished, waste plastic materials, waste tatami, bamboo Waste materials other than wood, including construction waste materials such as In addition, the wood is not limited to relatively dry and hard wood, and may include soft wood with a large amount of water such as roadside tree branches and roadside weeds shortly after pruning. In the present embodiment, these objects to be crushed are collectively referred to as objects to be crushed.

  The crusher includes a traveling body 1 for allowing the machine to travel by itself, a crusher body 2 that receives and crushes the object to be crushed, and discharges the crushed material that has been crushed by the crusher body 2 to the outside. A conveyor 3 and a power unit (power unit) 4 having an engine as a power source of each mounted device are provided.

  The traveling body 1 includes a track frame 5, driving wheels 6 and driven wheels 7 provided at both front and rear ends of the track frame 5, a driving device (traveling hydraulic motor) 8 having an output shaft connected to the shaft of the driving wheel 6, and driving A crawler belt (endless track crawler belt) 9 is provided around the wheel 6 and the driven wheel 7. A main body frame 10 extending forward and backward is provided on the track frame 5, and the main body frame 10 supports the crusher main body 2, the discharge conveyor 3, the power unit 4, and the like.

  The crusher body 2 includes a crushing device 13 (see FIG. 3 to be described later) for crushing the material to be crushed, a hopper 11 for feeding the material to be crushed, a feed conveyor 12 disposed in the hopper 11, and a feed conveyor 12. A pressing roller device 14 (see FIG. 2) that constitutes a supply device that supplies the object to be crushed to the crushing device 13 is provided. The configuration of the crusher main body 2 will be described later.

  The discharge conveyor 3 includes two linear conveyors, an upstream conveyor 51 and a downstream conveyor 52. The upstream conveyor 51 extends from the lower side of the crushing device 13 to the lower side of the power unit 4 between the left and right crawler belts 9 and is attached to the main body frame 10 in a slightly upwardly inclined posture toward the horizontal or downstream side. It is supported. The downstream conveyor 52 extends forward from the lower end of the downstream end of the upstream conveyor 51, and the downstream end is as high as possible within the limited overall length of the machine body. Are supported by the upstream conveyor 51 and the power unit 4 in an upwardly inclined posture. Each of the upstream conveyor 51 and the downstream conveyor 52 is wound around a conveyor frame 53, driving wheels and driven wheels (not shown) provided at both front and rear ends of the conveyor frame 53, and between the driving wheels and the driven wheels. A conveyor belt (not shown), a drive device (discharge conveyor motor) 54 that rotates and drives a driving wheel to rotate and drive the conveyor belt, and the like are conveyed on the downstream side of the downstream conveyor 52. A conveyor cover 55 is attached to the conveyor frame 53 so as to cover the upper side of the surface. Further, a magnetic separator 56 is provided above the downstream conveyor 56, and metal such as nails and iron pieces mixed in the crushed material conveyed by the downstream conveyor 56 is adsorbed by the magnetic separator 56 and crushed. It is separated from the product and carried out to the side of the downstream conveyor 56.

  The power unit 4 is mounted on the front part of the main body frame 10 and is located on the front side of the crushing unit 13. The power unit 4 includes an engine (prime mover) serving as a power source for the crusher, a hydraulic pump driven by the engine, a control valve unit for controlling the flow of pressure oil from the hydraulic pump to various hydraulic actuators, a fuel tank, A hydraulic oil tank and the like are provided. In addition, an operation panel 58 is provided at the lower part of the side surface (right side surface in the present embodiment) of the power unit 4 for performing body operation, setting, monitoring and the like other than the traveling operation. The operation panel 58 is disposed at a height that is easy for an operator to operate from the ground. The traveling operation is instructed by a wired or wireless remote controller (not shown). For example, a driver's seat with a traveling operation lever is provided near the rear of the power unit 4 and an operator gets on and performs a traveling operation. It can also be configured.

  FIG. 3 is a side view of the main part of the crusher main body 2 extracted. FIG. 3 shows a state in which the front crusher frame 20 (described later) is removed.

  The hopper 11 is a bottomed frame body that is open at the top and front and rear, and is installed horizontally at the rear of the main body frame 10.

  The feed conveyor 12 includes a head-side drive sprocket (not shown) having a rotating shaft 21 extending in the body width direction, and a tail-side driven sprocket (not shown) having a rotating shaft (not shown) extending in the body width direction. ), And a plurality of (four in this embodiment) conveying belts (chain belts) 17 wound between the driving sprocket and the driven sprocket, and from the vicinity of the rear end of the machine body to the lower half of the rear surface of the crushing rotor 15 It extends substantially horizontally in the hopper 11 to the opposite position. The driven sprocket is a bearing 19 (see FIG. 1) provided at the rear part of the left and right side wall bodies 18 (see FIG. 1) of the hopper 11, and the driving sprocket is a bearing provided on the crusher frame 20 constituting the side wall of the crushing device 13. (Not shown). The rotation shaft 21 of the drive sprocket is connected to the output shaft of a drive device (not shown) provided on the outer side in the body width direction with respect to the bearing via a coupling or the like. By rotating the driving sprocket with the driving device, the conveyor belt 17 is circulated between the driving sprocket and the driven sprocket.

  The crushing device 13 is mounted at a substantially central position in the front-rear direction of the main body frame 10 so as to be positioned in front of the feed conveyor 12. The crushing device 13 includes the crushing rotor 15 housed in the crushing chamber 27 and an anvil (fixed blade) 34 provided on the inner peripheral wall portion of the crushing chamber 27 so as to protrude toward the crushing rotor 15. The rotation axis of the crushing rotor 15 extends in the body width direction in the same manner as the rotation axis 12 of the drive sprocket of the feed conveyor 12. The crushing rotor 15 has a plurality of crushing bits (crushing blades) 36 on the outer peripheral portion. The crushing bit 36 is attached with bolts and nuts on the front side in the forward rotation direction of the bit holder 35 (clockwise in FIG. 3) of the bit holder 35 provided on the outer peripheral surface of the crushing rotor 15, and the blade surface (collision surface) is It faces the forward direction of the crushing rotor 15. Since the crushing rotor 15 is a rotating body, a predetermined gap is secured between the rotation track of the outermost peripheral portion (crushing bit 36) and the anvil 34 that is a stationary body.

  The anvil 34 has a collision surface 39 with which the object to be crushed introduced into the crushing chamber 27 collides, and the collision surface 39 faces the crushing pieces that circulate in the crushing chamber 27 as the crushing rotor 15 rotates. In this manner, the curved plate 41 of the anvil frame 40 is attached to the rear side in the forward rotation direction of the crushing rotor 15. This anvil 34 extends substantially over the entire length in the crushing chamber 27 (from the vicinity of the crusher frame 20 on the back side of the page in FIG. 3 to the vicinity of the crusher frame on the front side not shown).

  The anvil frame 40 that holds the anvil 34 is supported so as to be pivotable back and forth with the pivot shaft 31 as a fulcrum. The rotation shaft 31 is supported on the crusher frame 20 via a bearing (not shown) at a position slightly above the front of the rotation shaft 22 of the pressing roller device 14. Further, the anvil frame 40 is normally restrained through a shear pin 43 with respect to a support member 42 fixed to the inner wall surface of the crusher frame 20 in a normal state, and is fixed in a posture in which the anvil 34 faces the crushing chamber 27. Has been. The shear pin 43 functions as a protection means for the anvil 34. When an impact load exceeding the allowable shear stress of the shear pin 43 is applied to the anvil 34 during operation, the shear pin 43 is broken and the restraint of the anvil frame 40 is released. Due to the impact force applied to the anvil 34, the anvil frame 40 pivots about the pivot shaft 31, and the anvil 34 temporarily leaves the crushing chamber 27 and the crushing chamber 27 is opened as shown in FIG. In FIG. 4, the hopper 11, the feed conveyor 12, the pressing roller device 14, a cylinder 47 (described later) and the like are omitted for the purpose of preventing the complexity of the drawing. Note that the positional relationship between the center of gravity of the anvil frame 40 and the rotation shaft 31 is such that the anvil frame 40 faces the crushing chamber 27 as shown in FIG. It is defined so that the curved plate 41 comes into contact with a wear plate 61 (described later).

  Here, the crushing chamber 27 refers to a space that houses the crushing rotor 15 and crushes the material to be crushed. Specifically, when the downstream end of the feed conveyor 12 is a starting point, the end of the feed conveyor 12, the curved plate 28 of the pressing roller device 14, the anvil 34, and the anvil frame in the forward rotation direction of the crushing rotor 15. 40 curved plates 41 and a screen (sieving member) 38 are arranged in an arc shape in opposition to the outer peripheral surface of the crushing rotor 15, and these feed conveyor 12, curved plate 28, anvil 34, curved plate 41, and screen 38 are arranged. The space defined by the above constitutes the crushing chamber 27.

  The screen 38 is a plate-shaped sieve member that has a large number of discharge holes (not shown) and is curved in a circular arc shape. This screen 38 is positioned in front of the crushing rotor 15 in the forward direction of the crushing rotor 15 with respect to the curved plate 41 and is formed in an arc shape so as to face the lower half portion of the outer peripheral surface of the crushing rotor 15. It is detachably held on the screen holder 44. On the screen holder 44, a plurality of screens 38 (three in this embodiment) are arranged in the rotational direction of the crushing rotor 15.

  The screen holder 44 is configured to rotate in the vertical direction as the cylinder 47 extends and contracts with a shaft 45 extending in the machine body width direction as a fulcrum. From the state of FIG. Also, the screen 38 is rotated downward to a position where the screen 38 is lowered. Accordingly, the screen 38 can be inserted and removed from the lower side of the crusher frame 20 to the left and right.

  The cylinders 47 are, for example, hydraulic cylinders (or electric cylinders), and one cylinder is installed on each of the inner wall surfaces of the left and right crusher frames 20. The left and right cylinders 47 are located on the front side of the crushing device 13 and extend rearward from the bottom side connected to a bracket (not shown) attached to the crusher frame 20. A slider 48 is attached to the rod of the cylinder 47. The slider 48 is connected to the vicinity of the front end portion of the screen holder 44 via the arm 46. Both ends of the arm 46 are rotatably connected to the slider 48 and the screen holder 44. As can be seen from FIG. 3, the slider 48 and the arm 46 constitute a link mechanism, and the reciprocating motion of the slider 48 in the front-rear direction accompanying the expansion and contraction of the cylinder 47 causes the screen holder 44 to move up and down via the arm 46. Converted.

  Note that the length of the screen holder 44 and arm 46, the front and rear position of the cylinder 47, etc., when the screen holder 44 is in the normal posture at the time of work (state shown in FIG. 3), It is set so as to be substantially along the tangential direction of the crushing chamber 27, and consideration is given so that the push-up force and posture holding force of the screen holder 44 by the link mechanism can be obtained effectively.

  The pressing roller device 14 is rotated by a rotating shaft 22 extending in the body width direction above the front surface of the crushing rotor 15, a support member 23 swingable in the vertical direction about the rotating shaft 22, and the support member 23. A pressing roller 24 that is freely supported and faces the conveying surface near the drive sprocket of the feed conveyor 12, and a pressing cylinder 29 that swings the support member 23 of the pressing roller 24 are provided.

  The rotating shaft 22 is located behind the anvil frame 40 and is rotatably supported by a bearing (not shown) provided in the crusher frame 20. The support member 23 includes an arm portion 25 supported by the rotation shaft 22 and a bracket portion 26 for attaching a pressing roller connected to the distal end side of the arm portion 25. A part of the front surface of the pressing roller 24 on the lower surface of the arm portion 25 has an arcuate shape, and a part of the wall surface of the crushing chamber 27 is opposed to the outer peripheral surface of the pressing roller 24 in the arc-shaped part. The curved plate 28 is attached.

  The pressing cylinder 29 is, for example, a hydraulic cylinder (or an electric cylinder), and presses the pressing roller 24 against the object to be crushed on the feed conveyor 12 when measuring the hardness of the object to be crushed (described later), or during maintenance or the like. The support member 23 is rotated upward to open the inlet side (feed conveyor 12 side) of the crushing chamber 27. The bottom end of the pressing cylinder 29 is rotatably connected to a bracket 30 provided at an upper position of the anvil frame 40. The bracket 30 is fixed to the crusher frame 20 via a beam as shown in FIG. The rod side end portion of the pressing cylinder 29 is rotatably connected to a bracket 32 provided at the rear end portion of the upper surface of the arm portion 25.

  The pressing roller 24 is set to have a dimension in the axial direction (a direction perpendicular to the paper surface in FIG. 3) that is approximately the same as or slightly larger than the width of the conveying surface of the feed conveyor 12. The pressing roller 24 accommodates a driving device (not shown) in the feed roller 24 in a direction (counterclockwise in FIG. 3) that rolls on an object to be crushed and conveyed by the feed conveyor 12 by the driving device. The rotary drive is driven at a peripheral speed synchronized with the transport speed of 12.

  In the present embodiment, wear plates 61-64 made of a wear-resistant material are attached in a ring shape to the left and right inner wall surfaces of the crushing chamber 27 formed in an annular shape around the crushing rotor 15. The wear plates 61-64 are protective members for preventing wear of the crushing device frame 20 due to contact with the crushed material in the crushing chamber 27 during crushing operation, and are attached to the surface of the crushing device frame 20 on the crushing chamber 27 side by bolts. Replacement parts. The wear plate 61 covers a region on the front side in the forward rotation direction of the crushing rotor 15 from the anvil 34 on the upper half side of the crushing rotor 15. The wear plate 61 protrudes toward the crushing chamber 27 with respect to the crushing device frame 20 by the thickness of the plate, and the left and right ends of the curved plate 41 of the anvil frame 40 normally contact each other. It also has a function as a seating part. The outer peripheral surface 66 of the wear plate 61 is formed in an arc shape along the inner peripheral surface of the curved plate 41 of the anvil frame 40, and constitutes a seating surface of the anvil frame 40 on which the curved plate 41 is normally seated. The wear plates 62-64 have the same thickness as the wear plates 61 and are arranged in this order in the forward rotation direction of the crushing rotor 15. The wear plates 61-64 cover the entire circumference of the crushing chamber 27 with the wear plates 61-64. Yes.

  A through hole 65 (see FIG. 4) that penetrates the crushing device frame 20 is provided immediately above the wear plate 61 in the left and right crushing device frames 20. The through-hole 65 is an arc-shaped long hole provided along the outer peripheral surface 66 of the wear plate 61. Normally, the anvil frame 40 and the anvil 34 seated on the outer peripheral surface 66 of the wear plate 61 are connected to the crushing chamber 27 side. It is exposed by rotating the anvil frame 40 as shown in FIG. 4 or rotating the anvil frame 40 by human power. The through hole 65 in the present embodiment is provided along at least the most horizontal portion of the outer peripheral surface 66 of the wear plate 61, specifically, the rear side in the forward direction of the crushing rotor 15 of the wear plate 61. It extends from the end to a position slightly beyond the anvil 34.

  FIG. 5 is a partial cross-sectional view of the crushing device frame 20 and the wear plate 61 taken along line V-V in FIG.

  As shown in FIG. 5, the through hole 65 is inclined downward toward the outside of the crushing chamber 27 when viewed in a vertical section. A part of the outer peripheral surface 66 of the wear plate 61 is an inclined surface 68 that is continuous with the lower surface 67 of the inner wall surface of the through hole 65.

  Next, the operation of the crusher of the present embodiment having the above configuration will be described.

  First, when a material to be crushed is put into the hopper 11 by a heavy machine (hydraulic excavator or the like) equipped with an appropriate work tool such as a grapple, the material to be crushed is placed on the transport belt 17 of the feed conveyor 12 and directed to the crushing device 13. Are transported. When the object to be crushed reaches the front of the crushing device 13, the pressing roller 24 of the pressing roller device 14 rides on the object to be crushed, and then the object to be crushed is pressed against the conveying surface of the feed conveyor 12 by the weight of the pressing roller 24. It is done. The pressure roller 24 rotates in synchronization with the conveyance speed of the feed conveyor 12, and the object to be crushed is sandwiched between the conveyance belt 17 and the pressure roller 24, and enters the crushing chamber 27 by the cooperation of the feed conveyor 12 and the pressure roller device 14. It is sent. The object to be crushed sent into the crushing chamber 27 protrudes toward the crushing rotor 15 in a cantilever shape with a portion sandwiched between the pressing roller 24 and the conveyor belt 17 as a fulcrum. Since the crushing rotor 15 rotates in the direction in which the crushing bit 36 collides with the object to be crushed from below (clockwise in FIG. 3), the crushing reaction force is mainly received by the pressing roller 24.

  The object to be crushed pressed against the crushing rotor 15 is gradually crushed (primary crushing) from the tip by the crushing bit 36 of the crushing rotor 15 that collides at high speed from below while being pressed from above by the pressing roller 24. Go. The fragment to be shredded in this way and spun up in the crushing chamber 27 collides with the anvil 34 and is further crushed (secondary crushing) by the impact force. Of the crushed pieces that have been secondarily crushed, those that are already small enough to pass through the screen 38 are discharged through the screen 38, and those that do not pass are circulated in the crushing chamber 27 as the crushing rotor 15 rotates. Then, it is further crushed (tertiary crushing) in response to a collision action, a shearing action, a crushing action, etc. with the anvil 34, the crushing bit 36, the inner wall surface of the crushing chamber 27 such as a screen. Then, the crushed pieces that have been pulverized to a size that passes through the screen through the third crushing are sequentially passed through the screen 38 and discharged from the crushing device 13. The crushed material discharged from the crushing device 13 falls onto the upstream conveyor 51 of the discharge conveyor 3 via a chute (not shown), and is transferred to the downstream conveyor 52 and carried out of the machine.

  At this time, when an impact load exceeding the allowable shear stress of the shear pin 43 is applied due to a foreign matter biting between the anvil 34 and the crushing bit 36 during operation, the shear pin 43 is broken and the anvil frame 40 is restrained. The anvil frame 40 is pivoted about the pivot shaft 31 by the impact force applied to the anvil 34, and the anvil 34 is temporarily separated from the crushing chamber 27 as shown in FIG. The crushing chamber 27 is opened and foreign matter is discharged.

  However, when the anvil frame 40 rotates, not only foreign substances but also crushed pieces and wood chips that circulate in the crushing chamber 27 are discharged from the opened opening, and wood chips and the like are placed on the structure near the opening. Can be deposited. The outer peripheral surface 66 of the wear plate 61 is not an exception. When wood chips are deposited on the outer peripheral surface 66 of the wear plate 61, the wood chips are sandwiched between the curved plate 41 of the anvil frame 40 and the wear plate 61 as it is, and the anvil frame. 40 may not be completely closed.

  Therefore, in the present embodiment, by providing the through hole 65 along the outer peripheral surface 66 of the wear plate 61, the wood chips on the wear plate 61 are pushed away by the anvil frame 40 closed by its own weight, and these wood chips penetrate. The hole 65 can be discharged to the outside of the crushing device frame 20. Even when the wood chip on the wear plate 61 does not fall from the through hole 65 only by the collision with the anvil frame 40, the operator can pull out or remove the wood chip from the through hole 65. In this way, the wood chips on the wear plate 61 can be easily cleaned automatically or manually, so according to the present embodiment, the recovery time when the protection means of the anvil 34 functions is shortened and recovered. Therefore, the work efficiency can be improved. In addition, the provision of the through hole 65 does not particularly reduce the efficiency of the crushing operation. In addition to the function of the protection means of the anvil 34, the use of the through hole 65 is expected to improve the efficiency of maintenance (cleaning).

  Further, since the through hole 65 is inclined downward toward the outside of the crushing chamber 27, it is possible to promote the fall of the wood chip on the wear plate 61 to the outside of the machine. In particular, in the case of the present embodiment, since the inclined surface 68 following the through hole 65 is provided on the outer peripheral surface 66 of the wear plate 61 itself, the accumulation of wood chips on the wear plate 61 is suppressed and the anvil frame 40 is also suppressed. The wood chip is more easily guided to the through-hole 65 by using the impact at the time of closing, and the above-described effect of easy cleaning can be efficiently obtained.

  FIG. 6 is a side view of the main part of the crusher main body provided in the crusher according to the second embodiment of the present invention, which corresponds to FIG. 4 in the first embodiment. FIG. The same parts as those in the first embodiment are denoted by the same reference numerals as those in the previous drawings, and the description thereof is omitted.

  This embodiment differs from the first embodiment in that a through hole 65 ′ is provided in the crushing device frame 20 along the entire length of the outer peripheral surface 66 of the wear plate 61 (the outer peripheral surface of the wear plate 61. 66, through-holes 65 ′ are provided from the start end to the end of the crushing rotor 15 in the rotation direction). Other configurations are the same as those in the first embodiment.

  In the first embodiment, the case where the through hole 65 is provided in the vicinity of the anvil 34 which is the most horizontal portion of the arc-shaped outer peripheral surface 66 of the wear plate 61 when viewed from the axial direction of the crushing rotor 15 is taken as an example. Explained. As described above, even in the configuration in which the through-hole 65 is partially exposed on the outer peripheral surface 66 of the wear plate 61, the angle of the outer peripheral surface 66 of the wear plate 61 becomes closer to the vertical as the distance from the part is increased, and the wood chips accumulate. It is difficult, and even if it accumulates, it is easy to fall, so there is no problem because it can perform a necessary and sufficient function.

  On the other hand, in the case of the present embodiment, wood chips are deposited, for example, at a portion near the wear plate 62 on the outer peripheral surface 66 of the wear plate 61 by arranging the through hole 65 ′ along the entire length of the outer peripheral surface 66 of the wear plate 61. Or even if it may adhere, these wood chips are easily discharged from the through hole 65 '. Of course, for the wood chips deposited on the outer peripheral surface 66 of the wear plate 61 in the vicinity of the anvil 34, the discharge effect similar to that of the first embodiment can be obtained.

  In the embodiment described above, a part of the outer peripheral surface 66 of the wear plate 61 is configured as the inclined surface 68, but the outer peripheral surface 66 of the wear plate 61 itself is continuous with the lower surface 67 of the through hole 65. It may be. In this case, the accumulation of wood chips on the wear plate 61 can be further suppressed, and the accumulated wood chips can be discharged more smoothly. However, the shape of the contact portion with the wear plate 61 on the curved plate 41 side is inclined so that the outer circumferential surface 66 of the wear plate 61 and the curved plate 41 of the anvil frame 40 are in surface contact. It is desirable to match.

  Moreover, although the case where the member on which the anvil frame 40 is seated also serves as the wear plate 61 is illustrated, the present invention is not limited to the wear plate 61 but can be applied to a configuration in which a member or a part for supporting the anvil frame 40 is separately provided. is there. That is, if the through hole is provided along the seating surface of the anvil frame 40 in the member or part that supports the anvil frame 40, the same effect as the above embodiment can be obtained.

  Moreover, although the case where the shear pin 43 was used as an example of protection means of the anvil 34 that allows the anvil frame 40 to rotate when an impact force exceeding an allowable value is applied to the anvil has been described, the crushing device frame 20 The anvil frame 40 is elastically engaged with a stationary body including the structure, and the anvil frame 40 is unconstrained when an excessive impact force acts on the anvil and the engagement with the stationary body is released. You can also This configuration is detailed in, for example, International Application No. PCT / JP2009 / 55862.

  Moreover, although the case where this invention was applied to the self-propelled type crusher which provided the discharge conveyor on the opposite side to the hopper (processed material receiving side) was described as an example, the discharge conveyor was provided on the same side as the hopper The present invention is also applicable to a self-propelled crusher having a configuration. Moreover, although the case where the present invention is applied to a crawler type self-propelled crusher having an endless track crawler as a traveling means has been described as an example, a wheel-type self-propelled crusher having a tire as a traveling means is also described. The present invention is applicable. In these cases, similar effects can be obtained. Moreover, although the case where the present invention is applied to a crusher capable of traveling on its own has been described as an example, the present invention is not limited thereto, a mobile crusher that can be towed, or a portable crusher that can be lifted and transported by a crane, Furthermore, the present invention can be applied to a stationary crusher arranged as a fixed machine in a plant or the like.

15 crushing rotor 20 crushing device frame 27 crushing chamber 34 anvil 40 anvil frame 43 shear pin (protection means for anvil)
61 Wear plate (sitting part)
65 Through-hole 65 'Through-hole 66 Outer peripheral surface (sitting surface) of wear plate
68 Inclined surface

Claims (5)

A crushing device comprising a crushing device frame, a crushing rotor provided to be rotatable with respect to the crushing device frame, a crushing chamber for accommodating the crushing rotor, and an anvil provided on a rotation track of the crushing rotor via a gap. In the machine
An anvil frame that holds the anvil and is provided rotatably with respect to the crushing device frame;
A seating portion provided on the crushing device frame, on which the anvil frame is seated;
The anvil protective means that allows the anvil frame to rotate when an impact force exceeding an allowable value is applied to the anvil and opens the crushing chamber;
The crushing device frame is provided along a seating surface of the anvil frame in the seating portion, and is closed by the anvil frame when the anvil frame is seated on the seating portion, and the anvil frame is rotated. A crusher characterized by comprising a through-hole exposed by movement.   The crusher according to claim 1, wherein the through hole is inclined downward toward the outside of the crushing chamber.   The crusher according to claim 2, wherein at least a part of the upper surface of the seating portion is an inclined surface continuous with a lower surface of the through hole.   The said through-hole is provided in the said crushing device flame | frame along at least the rear-end part in the normal rotation direction of the said crushing rotor among the seating surfaces of the said seating part. The crusher of Claim 1.   The crusher according to any one of claims 1 to 3, wherein the through hole is provided in the crushing device frame along the entire length of the seating surface of the seating portion.

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