JP4391410B2 - Wood crusher - Google Patents

Description

  The present invention relates to a wood crusher for crushing pruned branch materials / thinned wood, branch timber, waste wood, etc., for example, a wood crusher that crushes crushed wood by rotating a crushing rotor.

  For example, pruned branches / thinned wood generated when pruning timber harvested in forests, branch timber generated in creation / green space maintenance management, or waste wood used in wooden houses is usually the final Are treated as industrial waste. The wood crusher transports these branch materials, branch wood, etc. for the purpose of reducing the volume of waste in the waste treatment process or fermenting the crushed pulverized material and reusing it as organic fertilizer. Before starting, it is crushed to a predetermined size at the work site.

  As this kind of wood crusher, a crushing bit is arranged on the outer peripheral portion, the crushing rotor supported rotatably, a support member provided on the outer peripheral side of the crushing rotor, and fixed to the support member by bolts. Some include a plurality of fixed blades arranged so as to be in the vicinity of the rotation trajectory of the crushing bit. In this wood crusher, a crushing bit of a crushing rotor is made to collide with an object to be crushed and first crushed (primary crushing), and then the crushed pieces are further fixed to a plurality of fixed blades located on the downstream side in the rotation direction on the outer side of the crushing rotor. And crushing (secondary crushing). And if the to-be-crushed wood is crushed finely below the opening area of the several opening part of the sieve member provided in the outer peripheral side of the crushing rotor, it will guide | induced outside from the opening part and will carry it out by a carrying-out conveyor.

JP 2002-346415 A

  In the above prior art, the fixed blade is fixed to the support member with a bolt. In such a structure, for example, when a non-crushable foreign material such as metal or stone mixed in the wood to be crushed is caught between the crushing bit and the fixed blade, the fixed blade is fixed. There is a fear that the bolt is sheared by a shearing force acting on the bolt that fixes the blade to the support member.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a wood crusher that can prevent shearing of a bolt that fixes a fixed blade even when the fixed blade is overloaded. There is to do.

(1) In order to achieve the above object, a wood crusher according to the present invention has a crushing bit disposed on an outer peripheral portion and is rotatably supported, and a support member provided on the outer peripheral side of the crushing rotor. A fixed blade provided in the support member so as to be replaceable by a bolt and disposed in the vicinity of the rotation trajectory of the crushing bit, a fitting portion fitted to the fixed blade, and the crushing rotor of the support member a protective member comprised of a protective portion covering the tip portion of the side, fixed to said support member, is intended to comprise a locking member for restricting the movement to the crushing rotor radially outwardly of the protective member.

In the present invention, the fixed blade is provided so as to be replaceable with respect to the support member by a bolt.
Here, for example, when non-crushable foreign matter such as metal or stone mixed in the wood to be crushed is caught between the crushing bit and the fixed blade, if the fixed blade is overloaded, the fixed blade is bolted. In the structure as in the above-described prior art which is fixed to the support member only by the shearing force, there is a fear that the bolt is sheared by a shearing force acting on the bolt. In addition, if the bolt is sheared, the fixed blade falls off the support member and collides with the crushing rotor, which may damage the crushing rotor.

On the other hand, in the present invention, since the protective member and the fixed blade, which are controlled to move outward in the radial direction of the crushing rotor by the locking member fixed to the support member, are fitted, the fixed blade is consequently obtained. The outward movement of the crushing rotor in the radial direction is restricted . As a result, even when an overload is applied to the fixed blade, the fixed blade can be prevented from moving outward in the radial direction of the crushing rotor, and the bolt is sheared by applying a shearing force as in the prior art. Can be prevented. As a result, it is possible to prevent a situation in which the fixed blade falls off the support member and collides with the crushing rotor to break the crushing rotor.

According to the present invention is found, for providing a protective member to cover the front end portion of the crushing rotor of the support member for supporting the stationary blade, the support member to wear by friction with the crushed wood or the like in the crushing Can be prevented.

(2) Oite above (1), preferably, the locking member is assumed to have a locking portion hooking to the corners of the crushing rotor radially outside the fixed blade or a protective member.

  By setting it as such a structure, the movement to the crushing rotor radial direction outward of a fixed blade or a protection member can be controlled reliably.

( 3 ) In the above ( 1 ) or ( 2 ), preferably, the fixed blade has a groove portion formed in a longitudinal direction thereof, and the protection member is formed in the longitudinal direction and fitted in the groove portion of the fixed blade. The fixed blade and the protection member shall be fitted together by fitting the projection into the groove.

  By setting it as such a structure, the movement of the crushing rotor radial direction of a fixed blade can be controlled reliably.

( 4 ) In any one of the above ( 1 ) to ( 3 ), preferably, the protection member is attached to the support member in a replaceable manner by the bolt.

  Thereby, when the protection member is worn due to friction with the crushed wood or the like being crushed, it can be replaced.

According to the present invention, since the movement of the fixed blade in the radial direction of the crushing rotor is restricted by providing the locking member, shearing of the bolt that fixes the fixed blade is prevented even when the fixed blade is overloaded. be able to.

Further , according to the present invention, the fixed blade is moved outward in the radial direction of the crushing rotor by fitting the protective member and the fixed blade that are restricted from moving outward in the radial direction of the crushing rotor by the locking member. Therefore, even if an overload is applied to the fixed blade, shearing of the bolt that fixes the fixed blade can be prevented.

Hereinafter, an embodiment of a wood crusher of the present invention will be described with reference to the drawings.
1 is a side view showing the entire structure of a self-propelled wood crusher as an embodiment of the wood crusher of the present invention, FIG. 2 is a top view of the self-propelled wood crusher shown in FIG. These are side views showing the detailed structure inside the side cover 19 in the vicinity of the crushing device 12 described later. In the following, the directions corresponding to the left and right in FIG. 1 are the rear and front of the wood crusher, or one and the other.

  1 to 3, reference numeral 1 denotes a traveling body that enables self-running, 2 denotes a crushing function component that crushes the wood to be shredded provided on the traveling body 1, and 3 denotes this crushing function component 2. The discharge conveyor that conveys the crushed material crushed in step 4 and discharges it outside the machine. 4 is a power unit (power unit) equipped with the power source (engine) of each mounted device. The self-propelled wood crusher in this example is These traveling bodies 1, the crushing function component 2, the discharge conveyor 3, the power unit 4, and the like are roughly configured.

  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) in which an output shaft is connected to the shaft of the drive wheel 6. 8 and a crawler belt (endless track crawler) 9 wound around the drive wheel 6 and the driven wheel 7. Reference numeral 30 denotes a main body frame provided on the track frame 5. The main body frame 30 supports the crushing function component 2, the discharge conveyor 3, the power unit 4, and the like.

  The crushing function component 2 includes a hopper 10 that receives input crushed wood, a feed conveyor 11 (see FIG. 2) serving as means for transporting the crushed wood accommodated in the hopper 10, and the feed conveyor. The crushing device 12 (see FIG. 3) that crushes the wood to be crushed introduced by 11 and the press conveyor device 13 that presses the wood to be crushed introduced into the crushing device 12 before the crushing device 12 against the feed conveyor 11 (FIG. 3). 3).

  The feed conveyor 11 is provided at sprocket-like drive wheels 15 provided on the crushing rotor 32 (described later) side, driven wheels (not shown) provided on the opposite side (the rear side of the wood crusher), and both ends in the conveying direction. And a transport body (transport belt, chain belt) 16 that is wound between the drive wheel 15 and the driven wheel and arranged in a plurality of rows (4 rows in this example, see FIG. 2) in the width direction.

  The driven wheel is supported by a bearing 18 (see FIG. 1) provided at the rear portion of the side wall body 17 (see FIG. 1) of the hopper 10, and the driving wheel 15 is a side cover of the crushing device 12 provided on the front side of the side wall body 17. 19 (see FIG. 3) is supported by a bearing (not shown). Thereby, the feed conveyor 11 extends from the lower part in 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 extends substantially horizontally, and the side cover 19 of the hopper 10 and the crushing device 12. It is stored inside.

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

  The aforementioned press conveyor device 13 is provided so as to face the conveyance surface of the feed conveyor 11 that conveys the wood to be crushed so as to be close to the rear side of the crushing rotor 32 (described later). The pressing conveyor device 13 has a support member supported by a crusher side cover 19 with a rotation shaft 22 supported by a bearing 21 so as to be rotatable in a vertical plane (movable up and down). And a presser roller 24 that is rotatably provided to the support member 23.

  The support member 23 includes an arm portion 25 having a rotating shaft 22, and a bracket portion 26 that is provided on the distal end side of the arm portion 25 and supports the pressing roller 24. A lower end surface of the arm portion 25 is formed to be curved in an arc shape, and a curved plate 27 constituting a part of a crushing chamber 31 described later is attached to the curved portion. On the other hand, the attachment portion of the pressing roller 24 in the bracket portion 26 is formed in an arc shape having a smaller diameter than the pressing roller 24, and the outer peripheral surface of the pressing roller 24 protrudes from the bracket portion 26. 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.

  Although not specifically shown, the presser roller 24 has a drive device (presser roller hydraulic motor) built in the body thereof, and is driven in a direction to roll on the transport surface of the feed conveyor 11 by the drive device (not shown). The wood to be crushed on the feed conveyor 11 that is rotated and rotated at substantially the same peripheral speed as the conveyance speed of the wood to be crushed is introduced into the crushing device 12 in cooperation with the feed conveyor 11.

  The crushing device 12 is mounted on a substantially central portion in the longitudinal direction of the main body frame 30 (see FIG. 1). As shown in FIG. 3, a crushing rotor 32 that rotates at a high speed in the crushing chamber 31, and the crushing rotor 32. The anvil (fixed blade) 33 is disposed so as to face the rotation direction (forward rotation direction, clockwise direction in FIG. 3). Although details will be described later, the anvil 33 is configured to be rotatable so as to retract in a direction following the normal rotation direction of the crushing rotor 32 when, for example, an excessive impact is applied (see FIG. 6). ).

  The crushing rotor 32 is rotatably supported by a bearing (not shown) provided on, for example, the side cover 19 of the crushing device 12 (or a support member (not shown) separately provided on the main body frame 30). The part is provided with a plurality of support members 34 and crushing bits (impact plates or crushing blades) 35 attached to the support members 34, respectively. The crushing bit 35 is arranged such that the blade surface thereof precedes the support member 34 when the crushing rotor 32 rotates in the forward rotation direction. Each crushing bit 35 is fixed to the support member 34 by a bolt 36 or the like, and can be easily replaced even when worn. Although not particularly illustrated, an output shaft of a driving device (crushing rotor hydraulic motor) that rotates the crushing rotor 32 and a rotation shaft of the crushing rotor 32 are connected via a V-belt or the like.

  The crushing chamber 31 described above is provided on the above-described curved plate 27 on the upper side and the front side and the lower side with respect to the crushing rotor 32, and is opened with a diameter that sets the particle size of the crushed wood (wood chips). The first screen 39 having a large number of holes, the second screen 40 and the like are generally defined, and the rear side thereof is released as a crushed wood introducing portion. The curved plate 27 is attached to the curved portion of the arm portion 25 of the presser conveyor device 13 as described above, and is configured to move with the up and down swinging motion of the presser conveyor device 13. Similar to the curved plate 27, the first and second screens 39, 40 are curved so as to substantially follow the rotational trajectory of the crushing rotor 32 through a predetermined gap between the first and second screens 39, 40 with the crushing bit 35, respectively. It is formed and disposed so as to be detachable (replaceable) (details will be described later).

  4 and 5 are side views showing the structure of the anvil 33 and the vicinity of the first screen 39 and showing details of their movable mechanisms in partial cross sections. In these figures, the same parts as those in the previous figures are shown. The same reference numerals are given and description thereof is omitted.

  4 and 5, reference numeral 41 denotes a pair of arms provided in the width direction (direction perpendicular to the paper surface in FIGS. 4 and 5). These arms 41 and 41 include a rotating shaft 42, a support member 43, and a screen. The rotation shaft 42 is supported by a bearing 47 provided on the outer wall surface of the crusher side cover 19 and is connected by a support member 44, a guide member 45, a connection member 46, and the like. It is the structure which can be rotated. The direction of the rotation shaft 42 is substantially parallel to the rotation axis of the crushing rotor 32.

  The front end of the arm 41 is connected to a support member 48 (see FIG. 3) fixed to the crusher side cover 19 via a shear pin 49 (see FIG. 3), so that the arm 41 is in a crushing operation (for example, the state of FIG. 3). ), The anvil 33 is fixed and held in such a posture as to be disposed in the vicinity of the rotation trajectory (not shown) of the crushing bit 35 of the crushing rotor 32. When an impact load exceeding the allowable limit of the shear pin 49 is applied to the anvil 33, the shear pin 49 is broken to release the restraint of the arm 41, and the arm 41 rotates about the rotation shaft 42 as a fulcrum. Retraction from the crushing chamber 31 prevents damage to each part. The state at this time is shown in FIG. 6 corresponding to FIG. Reference numeral 50 denotes a stopper fixed to the support member 48. As shown in FIG. 6, the stopper 50 limits the rotation range of the arm 41 in the retracting direction of the anvil 33. Interference with other components is prevented.

  Note that the turning operation of the arm 41 at this time is detected by a limit switch or the like (not shown), and a command signal for stopping the driving device of the crushing rotor 32 is output by a controller (not shown) at the time of detection. It has become.

  Returning to FIG. 4 and FIG. 5, the support member 43 is provided on the rear side between the arms 41, 41, and the anvil 33 is connected to the support member 43 via the protection member 51 and the locking member 52 and the bolt 53. (Refer to FIG. 9 described later). The frame-type screen support member (screen holder) 44 is provided below the arms 41 and 41, and the first screen 39 is placed on the screen support member 44 in a replaceable manner.

  55 is an abutting member that abuts the first screen 39, 56 is a bracket 58 in which the rod side end is rotatably connected to the abutting member 55 via a pin 57, and the bottom end is provided on the connecting member 46. The contact member 55 and the hydraulic cylinder 56 are, for example, provided in a pair in the width direction (direction perpendicular to the paper surface in FIGS. 4 and 5). (More may be installed). The contact member 55 is moved by the hydraulic cylinder 56 so as to advance and retract along the direction guided by the guide member 45 with respect to the first screen 39.

  With the above configuration, during the crushing operation, as shown in FIG. 4, the hydraulic cylinder 56 is extended and the contact member 55 is pushed in a wedge shape between the first screen 39 and the guide member 45 to fix the first screen 39. On the other hand, when the screen is replaced, as shown in FIG. 5, the hydraulic cylinder 56 is shortened to separate the contact member 55 from the first screen 39. As a result, the first screen 39 can be pulled out in the axial direction of the crushing rotor 32, and the first screen 39 can be easily replaced.

  At this time, an opening 61 (see FIG. 3) for drawing out and inserting the first screen 39 is formed in the arm 41 in consideration of the replacement work of the first screen 39, and the crusher side cover 19 is further formed. Similarly, an opening 62 (see FIG. 3) provided in consideration of the replacement work of the first screen 39 is also formed. The operator can draw out or insert the first screen 39 in the axial direction of the crushing rotor 32 through the openings 61 and 62. Although not particularly illustrated, for example, a bolt detachable cover or the like is attached to the opening 62 of the crusher side cover 19.

  In addition, when the position state of the contact member 55 (the expansion / contraction state of the hydraulic cylinder 56) is detected by a limit switch or the like (not shown) and the separation is detected, a command not permitting the driving of the driving device of the crushing rotor 32 by a controller (not shown) You may comprise so that a signal may be output.

  Returning to FIG. 3, reference numeral 63 denotes a frame-type screen support member (screen holder) that holds the second screen 40 at the outer peripheral side position of the crushing rotor 32. The screen support member 63 has a rotating shaft 64 provided at one end (left side in FIG. 3) in the circumferential direction (circumferential direction of the crushing rotor 32) and provided separately on the crusher side cover 19 (or on the main body frame 30). It is supported by a bearing 65 fixed to a support member (not shown) and rotates in the vertical direction (advances and retreats with respect to the crushing rotor 32).

  A hydraulic cylinder 66 is pivotally connected to a bracket 67 whose bottom end is fixed to the main body cover 19 side via a pin 68, and 69 is a crushing rotor for the screen support member 63. This is a link mechanism for converting into an advance / retreat operation for 32. The link mechanism 69 is provided at the rod side end of the hydraulic cylinder 66, and has a slide link 70 that moves along the direction of expansion and contraction of the hydraulic cylinder 66 and one end (upper end in FIG. 3) of the screen support member. 63 is pivotably connected to the other circumferential end 63 (the right end in FIG. 3), and the other end (the lower end in FIG. 3) is pivotable with the slide link 70 via the pin 71. And a holding link 72 connected to each other. 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.

  FIG. 7 is a side view showing the details of the movable mechanism extracted from the configuration around the first screen 39 and the second screen 40 described above. In this figure, the same parts as those in the previous drawings are shown. The same reference numerals are given and description thereof is omitted.

  As shown in FIG. 7, 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 substantially right angles, and the screen support member 63 comes closest to the crushing rotor 32. It will be in the state located in the position. 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. This state is shown in FIG. 8 corresponding to FIG. Thereby, the second screen 40 can be pulled out in the axial direction of the crushing rotor 32, and the second screen 40 can be easily replaced.

  At this time, the crusher side cover 19 is formed with a notch 74 (see FIG. 3) provided in consideration of the replacement work of the second screen 40. The operator can draw out or insert the second screen 40 in the axial direction of the crushing rotor 32 through the notch 74. Although not specifically shown, a bolt detachable cover or the like is attached to the notch 74, for example.

  Further, when the position state of the screen support member 63 (the expansion / contraction state of the hydraulic cylinder 66) is detected by a limit switch or the like (not shown) and the separation from the crushing rotor 32 is detected, the controller of the crushing rotor 32 is controlled by a controller (not shown). A command signal that does not permit driving may be output.

  Returning to FIGS. 1 and 2, the discharge conveyor 3 is suspended and supported at the discharge side (front side, right side in FIGS. 1 and 2) by a support member 75 that protrudes from the power unit 4. Further, the opposite side (rear side, left side in FIGS. 1 and 2) is supported by being suspended from the main body frame 30 via a support member 76. Thereby, the discharge conveyor 3 passes below the power unit 4 from the lower side of the crushing device 12, and is disposed in an upward inclination outward from the front side of the self-propelled wood crusher. 77 is a frame of the discharge conveyor 3, and 78 is a conveyor belt (not shown) wound between a drive wheel (not shown) and a driven wheel (not shown) provided at both ends in the longitudinal direction of the frame 77. It is a conveyor cover provided on the top. Reference numeral 79 denotes a drive device (a hydraulic motor for a discharge conveyor) that rotationally drives the drive wheels. By rotating the drive device 79, the conveyor belt is driven to circulate between the drive wheels and the driven wheels.

  The power unit 4 is mounted on the other end in the longitudinal direction of the main body frame 30 (the right side in FIGS. 1 and 2) via a support member 80. A driver's seat 81 is provided in a compartment on the rear side of the power unit 4 and on one side in the width direction (lower side in FIG. 2). 82 is an operation lever for driving operation provided in the driver's seat 81, and 83 is an operation panel for performing other operations, settings, monitoring and the like. In this example, the operation panel 83 is provided on the side of the machine body so that the operator can easily operate from the ground.

  In the self-propelled wood crusher having the basic configuration as described above, the greatest feature of this embodiment is that the bolt 53 is not sheared even if an overload is applied to the anvil 33. The detailed structure will be described below.

FIG. 9 is a side sectional view of a range indicated by IX in FIG. 4 showing a fixing structure in the bolt fixing portion of the anvil 33.
In FIG. 9, 33 is the above-mentioned anvil, 51 is the protective member provided so as to fit the anvil 33 and cover the tip of the support member 43 on the crushing rotor 32 side, and 52 is the support member 43 by welding, for example. The locking member 53 that is fixed and interposed between the protective member 51 and the support member 43 and restricts the movement of the protective member 51 outward in the radial direction of the crushing rotor, 53 is the anvil 33, the protective member 51, It is the said bolt which fixes the anvil 33 and the protection member 51 to the support member 43 so that replacement | exchange is possible by penetrating the member 52 and the support member 43, and screwing with the nut 84. FIG.

  The protective member 51 includes a fitting portion 51a that fits with the anvil 33, and a protective portion 51b that covers the tip of the support member 43 on the side of the crushing rotor 32. The fitting portion 51a and the protective portion 51b are They are joined together by welding or the like. As shown in FIG. 9, the protection member 51 configured in this manner has a substantially L-shaped side cross-sectional shape, and thereby the tip of the support member 43 and the locking member 52 on the side of the crushing rotor 32, and the bolt 53 and the nut 84 are separated from the crushing chamber 31 and protected so that they are prevented from being worn by friction with the wood to be crushed by the crushing rotor 32.

  A groove 33a is formed on the back side of the anvil 33 (downstream in the rotation direction of the crushing rotor 32; right side in FIG. 9) along the longitudinal direction (direction perpendicular to the paper surface in FIG. 9). A rail-shaped protrusion 51a1 that can be fitted into the groove 33a of the anvil 33 is formed on the portion 51a along the longitudinal direction (direction perpendicular to the paper surface in FIG. 9). The fitting portion 51a is fitted by fitting the protrusion 51a1 into the groove 33a. Here, the rail-shaped protrusion 51a1 is fitted to the groove-shaped groove 33a. However, for example, a cylindrical convex may be fitted to the cylindrical concave.

  As described above, the locking member 52 is fixed to the support member 43 by welding, for example, and has a locking portion 52a on the outer side in the radial direction of the crushing rotor (upper side in FIG. 9). The locking member 52 hooks a corner portion on the outer side in the crushing rotor radial direction of the protection member 51 (fitting portion 51a) by the locking portion 52a so as to restrict the movement of the protection member 51 outward in the radial direction of the crushing rotor. It has become. Here, the locking member 52 and the support member 43 are provided as separate members. However, for example, an integral configuration in which the locking portion 52a protrudes directly from the support member 43 may be employed.

Next, operation | movement of one Embodiment of the wood crusher of this invention of the said structure is demonstrated below.
For example, when the crushed wood is put into the hopper 10 with an appropriate work tool such as a grapple of a hydraulic excavator, the crushed wood is placed on the transport body 16 of the feed conveyor 11 and is guided by the side wall body 17 of the hopper 10. It is conveyed in a substantially horizontal direction toward the front side of the wood crusher by the conveying body 16 that is circulated.

  When the wood to be crushed on the feed conveyor 11 is conveyed to the vicinity of the pressing conveyor device 13, it enters the lower part of the press roller 24 of the pressing conveyor device 13 and pushes up the pressing conveyor device 13. As a result, the wood to be crushed on the feed conveyor 11 is introduced into the crushing chamber 31 while being pressed and gripped with the feed conveyor 11 by the action of the weight of the press conveyor device 13. Thereby, at the time of crushing, the to-be-crushed wood projects 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, and this projecting portion of the crushing rotor 32 rotates. When the crushing bit 35 collides, the primary crushing is relatively roughly performed. The piece of wood to be crushed that has been primarily crushed, orbits the space in the crushing chamber 31 on the outer peripheral side of the crushing rotor 32 in the rotation direction of the crushing rotor 32, collides with the anvil 33, and is further finely divided by the impact force. Next, it is crushed.

  Of the pieces of wood that are being crushed as described above, those larger than the holes provided in the first and second screens 39 and 40 continue to circulate in the crushing chamber 31, and the crushing bit 35 and the anvil. By colliding with 33 again, it is further crushed. Thus, when crushed to a particle size that passes through the holes of the first and second screens 39, 40, the crushed wood (wood chips) passes through the holes of the first or second screens 39, 40, It is discharged from the crushing device 12.

  The crushed wood (wood chips) discharged from the crushing device 12 falls onto the conveyor belt of the discharge conveyor 3 that is circulated and driven through a chute (not shown) and moves to the front side (right side in FIGS. 1 and 2). It is transported and discharged as a recycled product.

According to one embodiment of the wood crusher of the present invention in which the crushing operation is performed as described above, the following effects can be obtained.
In the present embodiment, the anvil 33 is provided so as to be replaceable with respect to the support member 43 by a bolt 53.

  Here, when an overload is applied to the anvil 33, for example, when a non-crushable foreign matter such as metal or stone mixed in the crushed wood is caught between the crushing bit 35 of the crushing rotor 32 and the anvil 33. In the structure as in the above-described prior art in which the anvil 33 is fixed to the support member 43 only by the bolt 53, before the shear pin 49 is broken and the arm 41 is rotated, the anvil 33 is retracted from the crushing chamber 31. There is a risk that the bolt 53 may be sheared by a shearing force. In addition, if the bolt 53 is sheared in this way, the anvil 33 is dropped from the support member 43 and collides with the crushing rotor 32, and the crushing rotor 32 may be damaged.

  On the other hand, in the present embodiment, the locking member 52 restricts the outward movement of the protective member 51 in the radial direction of the crushing rotor, and the protective member 51 and the anvil 33 are fitted together. The outward movement of the anvil 33 in the crushing rotor radial direction is restricted. As a result, even when an overload is applied to the anvil 33, it is possible to prevent the bolt 53 from being sheared by the shearing force as in the prior art. As a result, it is possible to prevent the anvil 33 from dropping from the support member 43 and colliding with the crushing rotor 32 to break the crushing rotor 32.

  In addition, by restricting the movement of the anvil 33 outward in the radial direction of the crushing rotor in this way, even if the bolt 53 is slightly loosened due to, for example, poor maintenance, the anvil 33 Misalignment can be prevented and backlash and the like can be eliminated.

  Further, according to the present embodiment, the protection member 51 is provided so as to cover the support member 43 that supports the anvil 33 and the front end portion of the locking member 52 on the crushing rotor 32 side and the screwed portion between the bolt 53 and the nut 84. Therefore, it is possible to prevent the support member 43 and the locking member 52 from being worn by friction with the crushing rotor 32 side tip, the nut 84, and the like during crushing.

  In the above, the fixed blade 33 is provided with the protective member 51 by providing the fitting portion 51 a of the protection member 51 with the rail-shaped protrusion 51 a 1 and fitting the protrusion 51 a 1 into the groove-shaped groove 33 a of the fixed blade 33. However, the present invention is not limited to this. For example, the fitting portion 51a and the locking member 52 of the protection member 51 are omitted, and a protrusion is formed on the support member 43. The protrusion is fixed to the fixed blade. The fixed blade 33 may be directly fitted to the support member 43 by fitting into the groove 33 a of 33. In this case, it is sufficient that the protection part 51 b of the protection member 51 is attached to the tip part of the support member 43 with a bolt or the like.

  In addition, the above-described presser conveyor device 13 is used as the pressing introduction means for the crushed wood, but the present invention is not limited to this, and for example, an endless member (such as a belt or a chain) between the driving roller and the driven roller. You may use what wound. Further, the operation at the time of pressing may be configured to move up and down instead of rotating. In this case, the same effect is obtained.

  Furthermore, although the wood crusher provided with what is called an impact crusher which attached the cutter (crushing bit 35) to the outer peripheral part of the crushing rotor 32 was demonstrated as an example as a crushing apparatus, it is not restricted to this, Other crushing apparatuses, for example, parallel A crushing device (such as a biaxial shearing machine including a so-called shredder) that has a cutter on a shaft arranged on the shaft and reversely rotates each other, and a roll-shaped rotating body (rotor) for crushing blades A rotary crushing apparatus (such as a six-axis crusher including a roll crusher) that rotates the pair in opposite directions and crushes the object to be crushed between the rotating bodies. Also, the present invention can be applied to a wood crusher equipped with a so-called wood chipper that makes the object to be crushed into chips. In these cases, the same effect as described above is obtained.

  Furthermore, although the case where the present invention is applied to a wood crusher capable of traveling on its own has been described as an example, the present invention is not limited to this, and can be lifted and transported by a mobile wood crusher that can be pulled and run, for example, a crane. Needless to say, the present invention may be applied to a portable wood crusher and a stationary wood crusher arranged as a fixed machine in a plant or the like. In these cases, the same effect as described above can be obtained.

It is a side view showing the whole structure of one embodiment of the wood crusher of the present invention. It is a top view showing the whole structure of one embodiment of the wood crusher of the present invention. It is a side view showing the detailed structure inside the side cover of the crushing device vicinity with which one Embodiment of the wood crusher of this invention was equipped. It is the side view which extracts the structure of the anvil and 1st screen vicinity with which one Embodiment of the wood crusher of this invention was equipped, and shows the detail of the movable mechanism at the time of those crushing in a partial cross section. It is a side view which extracts the structure of the anvil and 1st screen vicinity with which one Embodiment of the wood crusher of this invention was equipped, and shows the detail of a movable mechanism at the time of those screen replacement | exchanges with a partial cross section. It is a side view showing the detailed structure of the state where the anvil inside the side cover near the crushing device provided in the embodiment of the wood crusher of the present invention has been retracted. It is a side view which extracts the structure of the 1st screen and 2nd screen vicinity with which one Embodiment of the wood crusher of this invention was equipped, and shows the detail of the movable mechanism at the time of those crushing in a partial cross section. It is a side view which extracts the structure of the 1st screen and 2nd screen vicinity with which one Embodiment of the wood crusher of this invention was equipped, and shows the detail of a movable mechanism at the time of those screen replacement | exchanges with a partial cross section. It is a sectional side view of the range shown to IX in FIG. 4 showing the fixation structure in the bolt fixing | fixed part of the anvil with which one Embodiment of the wood crusher of this invention was equipped.

Explanation of symbols

32 Crushing rotor 33 Anvil (fixed blade)
33a Groove part 35 Crushing bit 43 Support member 51 Protection member 51a1 Projection part 52 Locking member 52a Locking part 53 Bolt

Claims (4)

A crushing rotor provided with a crushing bit on the outer periphery and supported rotatably;
A support member provided on the outer peripheral side of the crushing rotor;
A fixed blade provided in the support member in a replaceable manner by a bolt, and disposed in the vicinity of the rotation trajectory of the crushing bit;
A protective member configured from a fitting portion that fits with the fixed blade , and a protective portion that covers a tip portion of the support member on the crushing rotor side;
A wood crusher comprising: a locking member that is fixed to the support member and restricts movement of the crushing rotor radially outward of the protection member. The locking member is crusher of claim 1 Symbol placement and having the crushing rotor diameter hooked on the corner portion of the outward engaging portion of the fixed blade or a protective member. The fixed blade has a groove portion formed in the longitudinal direction thereof, and the protection member has a protrusion formed in the longitudinal direction and capable of fitting into the groove portion of the fixed blade, and the fixed blade and the protection member The wood crusher according to claim 1 or 2, wherein the member is fitted by fitting the protrusion into the groove. The wood crusher according to any one of claims 1 to 3 , wherein the protection member is attached to the support member by the bolt so as to be replaceable.

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