EP3584048A1 - Pressing force switching mechanism for rotation feeding part of pulverizer, pulverizer provided with same, and pressing force switching method for rotation feeding part of pulverizer - Google Patents
Pressing force switching mechanism for rotation feeding part of pulverizer, pulverizer provided with same, and pressing force switching method for rotation feeding part of pulverizer Download PDFInfo
- Publication number
- EP3584048A1 EP3584048A1 EP18905648.4A EP18905648A EP3584048A1 EP 3584048 A1 EP3584048 A1 EP 3584048A1 EP 18905648 A EP18905648 A EP 18905648A EP 3584048 A1 EP3584048 A1 EP 3584048A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- change point
- pressing force
- feeding
- pulverizer
- directions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/002—Transporting devices for wood or chips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/22—Feed or discharge means
- B02C18/2225—Feed means
- B02C18/2283—Feed means using rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
Definitions
- the present invention relates to a pressing force switching mechanism for rotation feeding part of a pulverizer, a pulverizer including the same, and a pressing force switching method for rotation feeding part of a pulverizer.
- the present invention relates to arrangements with which, when a grinding object, such as a tree or the like, becomes stuck in a grinding portion, removal of the grinding object can be performed easily.
- Patent Literature 1 blows ground chips afar to enable recovery to be performed easily. Also, a feeding roller that is included in the tree pulverizer and pushes a grinding object against a grinding rotor while pressingly holding the object in a downward direction is arranged to be driven to rotate upon being switched arbitrarily to a direction of pushing the grinding object against the grinding rotor or an opposite direction (description in paragraph [0019] of Patent Literature 1).
- Patent Literature 1 Japanese Published Unexamined Patent Application No. 2014-58044
- the present invention has been created in view of the above points and an object thereof is to provide a pressing force switching mechanism for rotation feeding part of a pulverizer, a pulverizer including the same, and a pressing force switching method for rotation feeding part of a pulverizer that are arranged such that, when a grinding object, such as a tree or the like, becomes stuck in a grinding portion, removal of the grinding object can be performed easily.
- the present invention can provide a pressing force switching mechanism for rotation feeding part of a pulverizer, a pulverizer including the same, and a pressing force switching method for rotation feeding part of a pulverizer that are arranged such that, when a grinding object, such as a tree or the like, becomes stuck in a grinding portion, removal of the grinding object can be performed easily.
- front, rear, and right, left may be used to express directions and locations in an easily understandable manner.
- front (direction) is the side in Fig. 1 at which a grinding device 2, to be described below, is provided
- rear (direction) is the side in Fig. 1 at which a handle 12, to be described below, is provided.
- left (direction) is the left side in Fig. 3
- right (direction) is the right side in the Fig. 3 .
- a pulverizer A includes an undercarriage 1.
- the undercarriage 1 has a motor 10, a crawler 11 driven by the motor 10, and a handle 12 for driving operation.
- a grinding device 2 that grinds a grinding object, such as a tree or the like
- a feeder 3 that feeds the grinding object into the grinding device 2
- a pressing force switching mechanism 4 that switches a pressing force applied to the grinding object by the feeder 3.
- the undercarriage 1, the motor 10, the crawler 11, and the handle 12 are ordinary components in a pulverizer and description thereof shall thus be limited to the simple description given above and detailed description shall be omitted.
- the grinding device 2 has a casing 20.
- the casing 20 has a supply opening 200 at a grinding object supplying side (right side in Fig. 1 ) (see Fig. 6 , etc.).
- a supply duct 21 of so-called bell mouth shape that is somewhat narrowed toward the supply opening 200 side is connected to the supply opening 200.
- An upper face of a bottom plate 210 that is a feeding face of the supply duct 21 is downwardly inclined at a required angle toward the supply opening 200.
- the supply duct 21 shown in Fig. 1 to Fig. 3 is of Japanese specifications and although unillustrated, under European specifications, a specialized supply duct that is even longer in distance from an inlet at a work portion side to the supply opening 200 is adopted.
- a partition member 22 defining a grinding space 25 at a front upper portion of the casing 20 is provided in an interior of the casing 20.
- the casing 20 includes an upper cover 29 capable of opening and closing an upper opening portion (see Fig. 4 ). Performing of maintenance of a grinding rotor 23 to be described below is enabled by opening the upper cover 29.
- the grinding rotor 23 is rotatably disposed in an interior of the grinding space 25.
- the grinding rotor 23 is axially supported such as to bridge across respective side plates 201 of the casing 20 with a direction of a rotating shaft 230 being a right-left direction and a horizontal direction.
- the grinding rotor 23 is belt-driven by a rotating shaft 101 of the motor 10 (see Fig. 2 ).
- a front portion of the casing 20 is opened and ground matter can be discharged through a screen 26 mounted to an opening portion (reference sign omitted).
- the grinding rotor 23 has, at two locations in a circumferential direction of a rotator 231 fixed to the rotating shaft 230, grinding blades 24 extending across an entire width. Each grinding blade 24 is disposed such that a blade edge (reference sign omitted) is parallel to the rotating shaft 230. Also, a rotation direction of the grinding rotor 23 is a clockwise rotation direction in Fig. 1 and is arranged to blow the ground matter toward and against the partition member 22 below. A rear portion side (supply opening 200 side) of the grinding rotor 23 is a grinding portion that grinds the grinding object.
- the feeder 3 is disposed at an upper portion side of a rear portion of the casing 20.
- the feeder 3 has arm slabs 30 of substantially quadrilateral shape disposed at outer sides of the respective side plates 201.
- Each arm slab 30 constitutes a movable body and an upper portion at a rear portion side is axially supported by an axial rod 31 such as to enable turning in an up/down direction with respect to each side plate 201.
- a feeding teeth roller 33 that is a feeding rotator is axially supported via bearings 32 such as to be rotatably drivable (see Fig. 4 ).
- the feeding teeth roller 33 has a structure provided with feeding teeth 331 at five locations at equal intervals in a circumferential direction of a rotating shaft 330 and intermediate portions in radial directions of the respective feeding teeth 331 are bent at the same angle in a rotation direction. Chevron-shaped teeth are formed continuously at a tooth edge of each feeding tooth 331 (see Fig. 2 ).
- the feeding teeth roller 33 is interlocked with the grinding rotor 23 via an electromagnetic clutch 35 that rotates together with the grinding rotor 23 (see Fig. 2 ).
- the electromagnetic clutch 35 When the electromagnetic clutch 35 is connected, the feeding teeth roller 33 is made to rotate in a feeding direction (clockwise rotation direction in Fig. 1 ) via a power transmission mechanism (reference sign omitted), and when the electromagnetic clutch 35 is disconnected, the feeding teeth roller 33 is braked and stops rotating.
- slots 202 for passing through the rotating shaft 330 are formed in the respective side plates 201 of the casing 20.
- Each slot 202 is formed in an arc centered at the axial rod 31 and enables lifting and lowering movements of the feeding teeth roller 33, that is, movements in a direction of approaching and in a direction of separating from the grinding object fed to the grinding portion (see Fig. 4 ).
- each arm slab 30 moves in a manner enabling advancing and retreating to the front and rear onto a bracket 38 shown in Fig. 1 .
- the stopped position is adjustable by turning the adjusting bolt 380.
- a rotation trajectory of the tooth edge of each feeding tooth 31 of the feeding teeth roller 33 is set such as to be slightly separated from an upper face of the partition member 22 such as not to interfere with the rotation.
- a stabilizer 36 is bridged across the respective arm slabs 30 and the respective arm slabs 30 are thereby coupled.
- the stabilizer 36 secures rigidity of a structure constituted of the respective arm slabs 30 and the feeding teeth roller 33.
- a pressing force release lever 37 is axially supported turnably via an axial rod 370.
- the pressing force release lever 37 is not urged and, in a normal state, passes below the stabilizer 36 and is tilted forward by its own weight.
- the pressing force switching mechanism 4 is provided, below the arm slabs 30, on the side plates 201 at right and left sides (near side and far side in Fig. 1 and Fig. 4 ) of the casing 20.
- spring hook arms 40, tension springs 42, switching arm plates 46, etc., to be described below have symmetrical structures at the right and left sides and therefore in the following description, just the structure at the left side that is illustrated shall be described and this description shall apply to the structure at the right side for which description shall be omitted.
- the pressing force switching mechanism 4 has the spring hook arm 40 that is a change point member and is axially supported turnably by an axial rod 41 on the side plate 201.
- a tip portion of the spring hook arm 40 is pointedly formed and inclined edges at respective sides thereof are arranged as an on contacting portion 401 and an off contacting portion 402.
- a hook pin 403 that is a hooking portion is provided at an outer face side close to a tip end of the spring hook arm 40.
- a spring hook 34 is provided at a lower corner portion at the front portion side of the arm slab 30 and the tension spring 42 that is an urging body is hooked with a required tensile force between the spring hook 34 and the hook pin 403.
- the spring hook arm 40 is arranged to contact and be stopped by a stopper 203, provided on the side plate 201, in an on position shown in Fig. 4 .
- the stopper 203 is fitted with a collar (not illustrated) made of synthetic resin for cushioning.
- the spring hook arm 40 has an arrangement where an urging force of the tension spring 42 acts in a direction such that it turns in either way with respect to an angle at which a centerline of the tension spring 42 overlaps with the hook pin 403 and the axial rod 41 at the same time (angle at which the tension spring 42 is extended the most) as a change point.
- the spring hook arm 40 and the tension spring 42 constitute a link mechanism (an irregular link mechanism in the sense that one of the links is a spring that undergoes expansion and contraction deformation).
- the arrangement is such that, at the on position, the spring hook arm 40 contacts the stopper 203 upon being pulled slightly in an upwardly turning direction beyond the change point and is fixed (locked) by the urging force of the tension spring 42.
- An axially supporting part 43 is provided at a rear edge of the side plate 201 at the left side of the casing 20. Also, at a left side of this side plate 201, a supporting part 44 is erected, across a required interval from the side plate 201, on a base 100 of the undercarriage 1. Between an upper portion of the supporting part 44 and the axially supporting part 43, a drive shaft 45 is axially supported rotatably in a horizontal, right-left direction via bearings (reference signs omitted).
- a switching arm plate 46 which is of substantially L-shape and constitutes a switching means together with a pressing force switching lever 49, an adjusting member 47, a tension spring 48, etc., to be described below, is mounted by the drive shaft 45 being made to penetrate through and fixed at a bend angle portion.
- the switching arm plate 46 has an on arm 461 (front side in Fig. 4 ) and an off arm 462 (rear side in Fig. 4 ) and rollers 460 that contact the spring hook arm 40 are provided at tip end portions of the respective arms.
- an on arm 461 front side in Fig. 4
- an off arm 462 rear side in Fig. 4
- rollers 460 that contact the spring hook arm 40 are provided at tip end portions of the respective arms.
- the tension spring 48 is hooked with a required tensile force between the other end portion of the adjusting member 47 and a spring hook 480 provided at a lower end portion of the side plate 201.
- the pressing force switching lever 49 is fixed to a tip end portion at an outer side of the drive shaft 45.
- a direction of the pressing force switching lever 49 is set to substantially overlap with a direction of projection parallel to the drive shaft 45 of the roller 460 of the off arm 462 (see Fig. 5 , etc.).
- a change point is also set for the above-described arrangement including the drive shaft 45, switching arm plate 46, adjusting member 47, tension spring 48, and the pressing force switching lever 49.
- the arrangement is one where the tensile force of the tension spring 48 acts in a direction such that the switching arm plate 46 turns in either way with respect to an angle at which a centerline of the tension spring 48 overlaps with the drive shaft 45 and the pin 463 at the same time (angle at which the tension spring 48 is extended the most) as a change point.
- the off arm 462, the tension spring 48, and the adjusting member 47 constitute a link mechanism (an irregular link mechanism in the sense that one of the links includes a spring that undergoes expansion and contraction deformation). That is, at the on position shown in Fig. 5 , the above-described arrangement surpasses the change point to urge the switching arm plate 46 in a clockwise turning direction in Fig. 5 and aid keeping of the on position.
- the on arm 461 contacts and is stopped by a stopper 204 provided on the side plate 201 and the above-described arrangement surpasses the change point in a direction opposite that in the case of the on position to urge the switching arm plate 46 in a counterclockwise turning direction in Fig. 7 and aid keeping of the off position.
- the spring hook arm 40 rotates beyond the change point in a direction opposite that in the case of the on position and is put in a free state limited by contacting of a stopper 205 provided on the side plate 201.
- the U-shape of the adjusting member 47 is a shape that provides clearance in advance at the curved portion to avoid the drive shaft 45 during movement and prevent interference (or contact).
- the spring hook arm 40 When the spring hook arm 40 is pushed further by the roller 460 of the on arm 461, the spring hook arm 40 rotates beyond the change point in the lock direction and stops in a state of contacting the stopper 203.
- the pressing force switching mechanism 4 of the pulverizer A can thereby be returned to the original set state shown in Fig. 5 , and thereafter, the grinding work can be continued generally by the procedures of (1) and (2) described above.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Food Science & Technology (AREA)
- Debarking, Splitting, And Disintegration Of Timber (AREA)
- Crushing And Pulverization Processes (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
- The present invention relates to a pressing force switching mechanism for rotation feeding part of a pulverizer, a pulverizer including the same, and a pressing force switching method for rotation feeding part of a pulverizer. In detail, the present invention relates to arrangements with which, when a grinding object, such as a tree or the like, becomes stuck in a grinding portion, removal of the grinding object can be performed easily.
- In recent years, much of thinnings and other waste wood generated in felling and pruning of street trees and garden trees is used as woody biomass fuel. To manufacture the woody biomass fuel, the waste wood must be ground into chips. As an example of a pulverizer for performing grinding of waste wood, there is a tree pulverizer described in
Patent Literature 1. - The conventional tree pulverizer described in
Patent Literature 1 blows ground chips afar to enable recovery to be performed easily. Also, a feeding roller that is included in the tree pulverizer and pushes a grinding object against a grinding rotor while pressingly holding the object in a downward direction is arranged to be driven to rotate upon being switched arbitrarily to a direction of pushing the grinding object against the grinding rotor or an opposite direction (description in paragraph [0019] of Patent Literature 1). - Patent Literature 1: Japanese Published Unexamined Patent Application No.
2014-58044 - However, the abovementioned conventional tree pulverizer has the following problems.
- That is, it is described that, when work stagnates due to a grinding object becoming stuck in a vicinity of the feeding roller or the like, a work of removing the grinding object can be performed easily because the grinding rotor and rotor chamber inner walls are exposed largely when an upper cover forming the rotor chamber is opened (descriptions in paragraphs [0033] and [0034] of Patent Literature 1).
- On the other hand, during grinding work by the tree pulverizer, a considerably strong holding force, that is, pressing force is required of the feeding roller to reliably feed the grinding object into the grinding rotor. Thus, even if the grinding rotor and the rotor chamber inner walls are largely exposed by opening the upper cover as described above, the removing work cannot be performed easily because the feeding roller holds the grinding object strongly. Time loss until restart of work is thus large and work efficiency is poor.
- Also, if the abovementioned arrangement, that is, the arrangement of the feeding roller being rotatable in forward and reverse directions is used to perform a treatment of making the feeding roller that is holding the stuck grinding object rotate in reverse, there is a danger of the tree or the like that is the grinding object flying out to a rear of the pulverizer, which is a location where a worker performs work, and there is thus a problem in safety.
- The present invention has been created in view of the above points and an object thereof is to provide a pressing force switching mechanism for rotation feeding part of a pulverizer, a pulverizer including the same, and a pressing force switching method for rotation feeding part of a pulverizer that are arranged such that, when a grinding object, such as a tree or the like, becomes stuck in a grinding portion, removal of the grinding object can be performed easily.
-
- (1) To achieve the above object, the present invention is a pressing force switching mechanism for rotation feeding part of a pulverizer, the mechanism including a rotary feeding portion mounted to a movable body and capable of advancing and retreating in a direction of a feeding face on which a grinding object is placed and pressingly holding and feeding the grinding object to a grinding portion, a change point member having a change point in a movable direction, actuatable in two directions demarcated by the change point, and having a hooking portion that becomes a fixed end at a lock direction side in one of the two directions, becomes a free end at a free direction side in the other direction, and differs in position in settled states in the respective directions, an urging body hooked between the movable body and the hooking portion of the change point member, actuating the change point member in the two directions demarcated by the change point, and becoming a fixed end in the actuation of the change point member to the lock direction side to impart a pressing force in the feeding face direction to the feeding rotator, and a switching means acting on the change point member to switch the change point member between the two directions demarcated by the change point.
By including the rotary feeding portion mounted to the movable body and capable of advancing and retreating in the direction of the feeding face on which the grinding object is placed and pressingly holding and feeding the grinding object to the grinding portion, the rotary feeding portion pressing force switching mechanism for a pulverizer can push the rotary feeding portion against the grinding object, such as a tree or the like, and rotate the rotary feeding portion, to feed the grinding object along the feeding face to the grinding portion. The grinding object can thereby be ground continuously by the grinding portion.
By including the change point member having the change point in the movable direction, actuatable in the two directions demarcated by the change point, and having the hooking portion that becomes the fixed end at the lock direction side in one of the two directions, becomes the free end at the free direction side in the other direction, and differs in position in the settled states in the respective directions, the pressing force switching mechanism is enabled to perform clear switching of the change point member between the lock direction side and the free direction side that are demarcated by the change point.
Also, the urging body hooked between the movable body and the hooking portion of the change point member, actuating the change point member in the two directions demarcated by the change point, and becoming the fixed end in the actuation of the change point member to the lock direction side to impart the pressing force in the feeding face direction to the feeding rotator is included. Thereby, when the change point member is at the lock direction side, the hooking portion hooking the urging body becomes the fixed end, an urging force of the urging body acts sufficiently, and the pressing force of the feeding rotator in the feeding face direction is secured to enable the grinding object to be pressingly held.
Further, when the change point member is at the free direction side, the hooking portion hooking the urging body becomes the free end such that the urging force of the urging body no longer acts, the pressing force of the feeding rotator in the feeding face direction is eased, and the pressing force of pressingly holding the grinding object is also eased and weakened.
Also, the pressing force switching mechanism includes the switching means acting on the change point member to switch the change point member between the two directions demarcated by the change point, and therefore by operation of the switching means, an operation of moving the change point member to the lock direction side to make the urging body act and an operation of moving the member to the free direction side to ease the urging force of the urging body can be performed switchingly.
In addition, the term "change point" as used in the claims and the present description is used in a meaning including a point (dead point) at which when the change point member is pulled by the urging body, such as a spring or the like, it cannot be known in which of directions demarcated by the point the member would turn. - (2) The present invention may be of an arrangement where the movable body has a plurality of arm slabs with a portion being axially supported turnably and has the rotary feeding portion mounted to span across the respective arm slabs.
In this case, by turning the plurality of arm slabs, the rotary feeding portion can be made to advance and retreat in the direction of the feeding face and pushing of the rotary feeding portion against the grinding object on the feeding face and cancellation (or release) of the pushing force (pressing force) can thereby be performed.
Also, the structure is such that the rotary feeding portion is spanned across the plurality of arm slabs and therefore the rotary feeding portion serves as structural reinforcement of the movable body including the arm slabs to increase rigidity, enabling more accurate movement as the movable body even when a large load acts during work. - (3) The present invention may be of an arrangement where the switching means has a change point in a movable direction and is arranged to switch the change point member by actuation in two directions demarcated by the change point and the actuation is aided by an urging force.
In this case, for example, at an on position of the pressing force switching mechanism, the switching means, by exceeding the change point, can aid keeping of the on position by the urging force. Also, at an off position, the switching means, by exceeding the change point, can aid keeping of the off position by the urging force. - (4) To achieve the above object, the present invention is a pulverizer including a pressing force switching mechanism for rotation feeding part of a pulverizer, the pulverizer including an undercarriage, a grinding device provided on the undercarriage and grinding a grinding object, such as a tree or the like, and the pressing force switching mechanism for rotation feeding part of a pulverizer having a rotary feeding portion mounted to a movable body and capable of advancing and retreating in a direction of a feeding face on which the grinding object is placed and pressingly holding and feeding the grinding object to a grinding portion, a change point member having a change point in a movable direction, actuatable in two directions demarcated by the change point, and having a hooking portion that becomes a fixed end at a lock direction side in one of the two directions, becomes a free end at a free direction side in the other direction, and differs in position in settled states in the respective directions, an urging body hooked between the movable body and the hooking portion of the change point member, actuating the change point member in the two directions demarcated by the change point, and becoming a fixed end in the actuation of the change point member to the lock direction side to impart a pressing force in the feeding face direction to the feeding rotator, and a switching means acting on the change point member to switch the change point member between the two directions demarcated by the change point.
By the grinding device provided on the undercarriage, the pulverizer is made capable of grinding the grinding object fed to the grinding portion by the rotary feeding portion. And, if during grinding work, the grinding device (pulverizer) stops due to some cause, for example, the grinding object being too thick or the like, this can be dealt with by switching the pressing force switching mechanism from an on position, which is a set state, to an off position to ease the pressing force on the grinding object at the rotary feeding portion as described above. - (5) The present invention may be of an arrangement where the switching means has a change point in a movable direction and is arranged to switch the change point member by actuation in two directions demarcated by the change point and the actuation is aided by an urging force.
In this case, for example, at the on position of the pressing force switching mechanism, the switching means, by exceeding the change point, can aid keeping of the on position by the urging force. Also, at the off position, the switching means, by exceeding the change point, can aid keeping of the off position by the urging force. - (6) To achieve the above object, the present invention is a pressing force switching method for rotation feeding part of a pulverizer where a change point member having a change point in a movable direction is moved by a switching means to a lock direction side among two directions demarcated by the change point to make a hooking portion be a fixed end and draw a rotary feeding portion in a direction of a grinding object by an urging body hooked between the rotary feeding portion and the bridging portion, and when the grinding object becomes stuck in the grinding portion, the change point member is moved by the switching means to a free direction side among the two directions demarcated by the change point to make the hooking portion be a free end and ease an urging force by the urging body that draws the rotary feeding portion in the direction of the grinding object.
By the pressing force switching method for rotation feeding part of a pulverizer, the switching of the change point member between the lock direction side and the free direction side that are demarcated by the change point can be performed clearly by the switching means. That is, when the change point member is at the lock direction side, the hooking portion hooking the urging body becomes the fixed end, the urging force of the urging body acts sufficiently, and a pressing force of the feeding rotator in a feeding face direction is secured to enable the grinding object to be pressingly held. Also, when the change point member is at the free direction side, the hooking portion hooking the urging body becomes the free end such that the urging force of the urging body no longer acts, the pressing force of the feeding rotator in the feeding face direction is eased, and the pressing force of pressingly holding the grinding object is also eased and weakened. - (7) The present invention may be of an arrangement where the switching means has a change point in a movable direction and is arranged to switch the change point member by actuation, aided by an urging force, in two directions demarcated by the change point.
In this case, by exceeding the change point, the switching means is enabled by the urging force to aid keeping of position of the change point member that is at an on position. Also, by exceeding the change point, the switching means is enabled by the urging force to aid keeping of position of the change point member that is at an off position. - The present invention can provide a pressing force switching mechanism for rotation feeding part of a pulverizer, a pulverizer including the same, and a pressing force switching method for rotation feeding part of a pulverizer that are arranged such that, when a grinding object, such as a tree or the like, becomes stuck in a grinding portion, removal of the grinding object can be performed easily.
-
-
Fig. 1 is a side explanatory view showing an embodiment of a pulverizer according to the present invention. -
Fig. 2 is a top explanatory view of the pulverizer shown inFIG. 1 . -
Fig. 3 is a rear explanatory view of the pulverizer shown inFIG. 1 . -
Fig. 4 is a perspective explanatory view showing an embodiment of a pressing force switching mechanism for rotation feeding part according to the present invention. -
Fig. 5 is an explanatory view showing a set state of the pulverizer before start of grinding work. -
Fig. 6 is an explanatory view showing a state where the pulverizer is stopped due to a grinding blade biting into a tree during the grinding work on the tree. -
Fig. 7 is an explanatory view showing a state where a pressing force switching lever is operated in an off position direction to cancel the set state of the pressing force switching mechanism for rotation feeding part and ease a pressing force. -
Fig. 8 is an explanatory view showing a state where a pressing force release lever is operated to release the pressing force of a rotary feeding portion to take out the tree. -
Fig. 9 is an explanatory view showing a state where the pressing force release lever is returned after taking out the tree. -
Fig. 10 is an explanatory view showing a state where the pressing force switching lever is operated in an on position direction to begin pushing a spring hook arm in a lock direction. - An embodiment of the present invention shall now be described in further detail with reference to
Fig. 1 to Fig. 4 . In addition, in the following description, the terms "front, rear," and "right, left" may be used to express directions and locations in an easily understandable manner. Among these, "front (direction)" is the side inFig. 1 at which agrinding device 2, to be described below, is provided, and "rear (direction)" is the side inFig. 1 at which ahandle 12, to be described below, is provided. Also, "left (direction)" is the left side inFig. 3 and "right (direction)" is the right side in theFig. 3 . - A pulverizer A includes an
undercarriage 1. Theundercarriage 1 has amotor 10, acrawler 11 driven by themotor 10, and ahandle 12 for driving operation. Also, on theundercarriage 1 are included a grindingdevice 2 that grinds a grinding object, such as a tree or the like, afeeder 3 that feeds the grinding object into the grindingdevice 2, and a pressingforce switching mechanism 4 that switches a pressing force applied to the grinding object by thefeeder 3. - The respective portions shall now be described in detail. However, the
undercarriage 1, themotor 10, thecrawler 11, and thehandle 12 are ordinary components in a pulverizer and description thereof shall thus be limited to the simple description given above and detailed description shall be omitted. - The grinding
device 2 has acasing 20. Thecasing 20 has asupply opening 200 at a grinding object supplying side (right side inFig. 1 ) (seeFig. 6 , etc.). Asupply duct 21 of so-called bell mouth shape that is somewhat narrowed toward thesupply opening 200 side is connected to thesupply opening 200. An upper face of abottom plate 210 that is a feeding face of thesupply duct 21 is downwardly inclined at a required angle toward thesupply opening 200. - Incidentally, the
supply duct 21 shown inFig. 1 to Fig. 3 is of Japanese specifications and although unillustrated, under European specifications, a specialized supply duct that is even longer in distance from an inlet at a work portion side to thesupply opening 200 is adopted. - A
partition member 22 defining a grindingspace 25 at a front upper portion of thecasing 20 is provided in an interior of thecasing 20. Also, thecasing 20 includes anupper cover 29 capable of opening and closing an upper opening portion (seeFig. 4 ). Performing of maintenance of a grindingrotor 23 to be described below is enabled by opening theupper cover 29. - The grinding
rotor 23 is rotatably disposed in an interior of the grindingspace 25. The grindingrotor 23 is axially supported such as to bridge acrossrespective side plates 201 of thecasing 20 with a direction of arotating shaft 230 being a right-left direction and a horizontal direction. The grindingrotor 23 is belt-driven by arotating shaft 101 of the motor 10 (seeFig. 2 ). In addition, a front portion of thecasing 20 is opened and ground matter can be discharged through ascreen 26 mounted to an opening portion (reference sign omitted). - The grinding
rotor 23 has, at two locations in a circumferential direction of arotator 231 fixed to therotating shaft 230, grindingblades 24 extending across an entire width. Each grindingblade 24 is disposed such that a blade edge (reference sign omitted) is parallel to therotating shaft 230. Also, a rotation direction of the grindingrotor 23 is a clockwise rotation direction inFig. 1 and is arranged to blow the ground matter toward and against thepartition member 22 below. A rear portion side (supply opening 200 side) of the grindingrotor 23 is a grinding portion that grinds the grinding object. - The
feeder 3 is disposed at an upper portion side of a rear portion of thecasing 20. Thefeeder 3 hasarm slabs 30 of substantially quadrilateral shape disposed at outer sides of therespective side plates 201. Eacharm slab 30 constitutes a movable body and an upper portion at a rear portion side is axially supported by anaxial rod 31 such as to enable turning in an up/down direction with respect to eachside plate 201. Also, between lower portions at front portion sides of therespective arm slabs 30, a feedingteeth roller 33 that is a feeding rotator is axially supported viabearings 32 such as to be rotatably drivable (seeFig. 4 ). - The feeding
teeth roller 33 has a structure provided with feedingteeth 331 at five locations at equal intervals in a circumferential direction of arotating shaft 330 and intermediate portions in radial directions of therespective feeding teeth 331 are bent at the same angle in a rotation direction. Chevron-shaped teeth are formed continuously at a tooth edge of each feeding tooth 331 (seeFig. 2 ). The feedingteeth roller 33 is interlocked with the grindingrotor 23 via an electromagnetic clutch 35 that rotates together with the grinding rotor 23 (seeFig. 2 ). When theelectromagnetic clutch 35 is connected, the feedingteeth roller 33 is made to rotate in a feeding direction (clockwise rotation direction inFig. 1 ) via a power transmission mechanism (reference sign omitted), and when theelectromagnetic clutch 35 is disconnected, the feedingteeth roller 33 is braked and stops rotating. - Also,
slots 202 for passing through therotating shaft 330 are formed in therespective side plates 201 of thecasing 20. Eachslot 202 is formed in an arc centered at theaxial rod 31 and enables lifting and lowering movements of the feedingteeth roller 33, that is, movements in a direction of approaching and in a direction of separating from the grinding object fed to the grinding portion (seeFig. 4 ). - In addition, movement of the feeding
teeth roller 33 is stopped by a rear end portion of eacharm slab 30 contacting an adjustingbolt 380 screwed in a manner enabling advancing and retreating to the front and rear onto abracket 38 shown inFig. 1 . The stopped position is adjustable by turning the adjustingbolt 380. Also, in the stopped state, a rotation trajectory of the tooth edge of each feedingtooth 31 of the feedingteeth roller 33 is set such as to be slightly separated from an upper face of thepartition member 22 such as not to interfere with the rotation. - A
stabilizer 36 is bridged across therespective arm slabs 30 and therespective arm slabs 30 are thereby coupled. Thestabilizer 36 secures rigidity of a structure constituted of therespective arm slabs 30 and the feedingteeth roller 33. Also, on an upper portion rear end close to a left end of thecasing 20, a pressingforce release lever 37 is axially supported turnably via anaxial rod 370. In addition, the pressingforce release lever 37 is not urged and, in a normal state, passes below thestabilizer 36 and is tilted forward by its own weight. - The pressing
force switching mechanism 4 is provided, below thearm slabs 30, on theside plates 201 at right and left sides (near side and far side inFig. 1 andFig. 4 ) of thecasing 20. Of the pressingforce switching mechanism 4,spring hook arms 40, tension springs 42, switchingarm plates 46, etc., to be described below have symmetrical structures at the right and left sides and therefore in the following description, just the structure at the left side that is illustrated shall be described and this description shall apply to the structure at the right side for which description shall be omitted. - The pressing
force switching mechanism 4 has thespring hook arm 40 that is a change point member and is axially supported turnably by anaxial rod 41 on theside plate 201. A tip portion of thespring hook arm 40 is pointedly formed and inclined edges at respective sides thereof are arranged as an on contactingportion 401 and an off contactingportion 402. - A
hook pin 403 that is a hooking portion is provided at an outer face side close to a tip end of thespring hook arm 40. Aspring hook 34 is provided at a lower corner portion at the front portion side of thearm slab 30 and thetension spring 42 that is an urging body is hooked with a required tensile force between thespring hook 34 and thehook pin 403. Also, thespring hook arm 40 is arranged to contact and be stopped by astopper 203, provided on theside plate 201, in an on position shown inFig. 4 . In addition, thestopper 203 is fitted with a collar (not illustrated) made of synthetic resin for cushioning. - In addition, the
spring hook arm 40 has an arrangement where an urging force of thetension spring 42 acts in a direction such that it turns in either way with respect to an angle at which a centerline of thetension spring 42 overlaps with thehook pin 403 and theaxial rod 41 at the same time (angle at which thetension spring 42 is extended the most) as a change point. Thespring hook arm 40 and thetension spring 42 constitute a link mechanism (an irregular link mechanism in the sense that one of the links is a spring that undergoes expansion and contraction deformation). The arrangement is such that, at the on position, thespring hook arm 40 contacts thestopper 203 upon being pulled slightly in an upwardly turning direction beyond the change point and is fixed (locked) by the urging force of thetension spring 42. - An axially supporting
part 43 is provided at a rear edge of theside plate 201 at the left side of thecasing 20. Also, at a left side of thisside plate 201, a supportingpart 44 is erected, across a required interval from theside plate 201, on abase 100 of theundercarriage 1. Between an upper portion of the supportingpart 44 and theaxially supporting part 43, adrive shaft 45 is axially supported rotatably in a horizontal, right-left direction via bearings (reference signs omitted). And, at a portion of thedrive shaft 45 close to theaxially supporting part 43, a switchingarm plate 46, which is of substantially L-shape and constitutes a switching means together with a pressingforce switching lever 49, an adjustingmember 47, atension spring 48, etc., to be described below, is mounted by thedrive shaft 45 being made to penetrate through and fixed at a bend angle portion. - The switching
arm plate 46 has an on arm 461 (front side inFig. 4 ) and an off arm 462 (rear side inFig. 4 ) androllers 460 that contact thespring hook arm 40 are provided at tip end portions of the respective arms. To an outer edge close to a tip portion of theoff arm 462, one end portion of the substantially U-shaped adjustingmember 47 is mounted via apin 463 such as to be enable turning in the up-down direction. Also, thetension spring 48 is hooked with a required tensile force between the other end portion of the adjustingmember 47 and aspring hook 480 provided at a lower end portion of theside plate 201. - The pressing
force switching lever 49 is fixed to a tip end portion at an outer side of thedrive shaft 45. A direction of the pressingforce switching lever 49 is set to substantially overlap with a direction of projection parallel to thedrive shaft 45 of theroller 460 of the off arm 462 (seeFig. 5 , etc.). A change point is also set for the above-described arrangement including thedrive shaft 45, switchingarm plate 46, adjustingmember 47,tension spring 48, and the pressingforce switching lever 49. - That is, the arrangement is one where the tensile force of the
tension spring 48 acts in a direction such that the switchingarm plate 46 turns in either way with respect to an angle at which a centerline of thetension spring 48 overlaps with thedrive shaft 45 and thepin 463 at the same time (angle at which thetension spring 48 is extended the most) as a change point. Theoff arm 462, thetension spring 48, and the adjustingmember 47 constitute a link mechanism (an irregular link mechanism in the sense that one of the links includes a spring that undergoes expansion and contraction deformation). That is, at the on position shown inFig. 5 , the above-described arrangement surpasses the change point to urge the switchingarm plate 46 in a clockwise turning direction inFig. 5 and aid keeping of the on position. - Also, at the off position shown in
Fig. 7 , the onarm 461 contacts and is stopped by astopper 204 provided on theside plate 201 and the above-described arrangement surpasses the change point in a direction opposite that in the case of the on position to urge the switchingarm plate 46 in a counterclockwise turning direction inFig. 7 and aid keeping of the off position. Thespring hook arm 40 rotates beyond the change point in a direction opposite that in the case of the on position and is put in a free state limited by contacting of astopper 205 provided on theside plate 201. In addition, the U-shape of the adjustingmember 47 is a shape that provides clearance in advance at the curved portion to avoid thedrive shaft 45 during movement and prevent interference (or contact). - Actions of the pulverizer A shall now be described with reference to
Fig. 1 to Fig. 10 (mainlyFig. 5 to Fig. 10 in regard to movements of the respective portions). - (1) Before grinding work on a tree W that is the grinding object is started, the pulverizer A is set as follows. First, the pressing
force switching lever 49 is at the on position, and thereby thespring hook arm 40 is set beyond the change point to the lock direction side and is stopped in contact with thestopper 203 by the urging force of thetension spring 42. Also, eacharm slab 30 is turned in a downward direction by the urging force of thetension spring 42 and the feedingteeth roller 33 is thereby lowered until afeeding tooth 331 contacts the partition member 22 (seeFig. 5 ). In this state, a tensile force acts on thetension spring 42. Further, theelectromagnetic clutch 35 is disconnected and the feedingteeth roller 33 is braked such that it does not rotate. - (2) In starting the grinding work on the tree W, the
motor 10 is driven from the state shown inFig. 5 . The tree W to be ground is prepared and theelectromagnetic clutch 35 is connected to make the feedingteeth roller 33 rotate in the feeding direction (clockwise rotation direction inFig. 6 ). Subsequently, when the tree W is pushed in successively toward the feedingteeth roller 33, the feedingteeth 331 of the rotatingfeeding teeth roller 33 bite into the tree W and feed out the tree W along the upper face of thebottom plate 210 toward thesupply opening 200. The tree W is thereby ground by the grindingrotor 23 that is the grinding portion. By successively adding and supplying trees W in the same manner, the grinding work can be performed continuously.
And, if, during the grinding work, a grindingblade 24 bites into the tree W due to some cause, for example, the tree W being too thick or the like, and the pulverizer A stops (seeFig. 6 ), or even if the stopping of the pulverizer A does not occur, if feeding to thesupply opening 200 is made difficult due to spreading of the branches of the tree W supplied and obstruction by the branches and leaves or the like, this is dealt as follows. - (3) If, as in the latter of the above cases, an amount of pull of the
tension spring 42 is small and the pressing force on the tree W by the feedingteeth roller 33 is not very large, first, the pressingforce release lever 37 is turningly operated in a rearward direction. If, by this operation, the feedingteeth roller 33 separates from the tree W, the tree W is removed in this state. However, if the amount of pull of thetension spring 42 is large and this operation cannot be performed, the pressingforce release lever 37 is returned to the original position and thereafter, the pressingforce switching lever 49 is turned in the direction of the off position (forward direction).
In accompaniment with the turning by this operation, the switchingarm plate 46 also turns in the same direction, theroller 460 of theoff arm 462 contacts theoff contacting portion 402 of thespring hook arm 40, and thespring hook arm 40 is pushed further and rotates largely beyond the change point in the direction opposite that mentioned above (seeFig. 7 ).
Also, at the point of surpassing the change point, thespring hook arm 40 is switched to the free direction side and the urging force of thetension spring 42 is substantially cancelled. The pressing force of the feedingteeth roller 33 on the tree W is thereby eased and weakened and the set state at the beginning of work is cancelled. In addition, by thepin 463 surpassing the change point, the switchingarm plate 46 is urged in the counterclockwise turning direction inFig. 7 to keep the off position. - (4) In the state of
Fig. 7 , the pressing force of the feedingteeth roller 33 is still acting on the tree W and therefore this pressing force is cancelled before removing the tree W. That is, when the pressingforce release lever 37 is turningly operated in the rearward direction and a portion close to a base portion is hitched onto thestabilizer 36 to raise the feedingteeth roller 33, thespring hook arm 40 stops upon contacting thestopper 205. When the pressingforce release lever 37 is then turningly operated further in the rearward direction from this state as indicated by virtual lines, thetension spring 42 is extended further and the pressing force of the feedingteeth roller 33 can be released. The tree W stuck in the grinding portion can thereby be removed simply and safely (seeFig. 8 ).
Thus, at the off position, the position of thehook pin 403 hooking a base end of thetension spring 42 is made close to thespring hook 34 such that the amount of pull by thetension spring 42 is made sufficiently small and operation by the pressingforce release lever 37 can thus also be performed easily with a comparatively light force. - (5) When, after the tree W is taken out, the pressing
force release lever 37 is turningly operated in the forward direction and returned to its original state, support of thestabilizer 36 by the pressingforce release lever 37 is removed and eacharm slab 30 turns in the downward direction due to its own weight and stops upon contacting the adjustingbolt 380. Also, thespring hook arm 40 turns in a downwardly returning direction in a manner of being pushed by thetension spring 42 and stops at the free direction side without reaching the change point (seeFig. 9 ). - (6) After the tree W is removed, the pulverizer A must be returned to the original set state shown in
Fig. 5 such that the grinding work can be restarted. In this process, the pressingforce switching lever 49 is operated in the direction of the on position (rearward direction) from the state shown inFig. 9 . In accompaniment with the turning by this operation, the switchingarm plate 46 also turns in the same direction and theroller 460 of the onarm 461 contacts the on contactingportion 401 of the spring hook arm 40 (seeFig. 10 ). - When the
spring hook arm 40 is pushed further by theroller 460 of the onarm 461, thespring hook arm 40 rotates beyond the change point in the lock direction and stops in a state of contacting thestopper 203. The pressingforce switching mechanism 4 of the pulverizer A can thereby be returned to the original set state shown inFig. 5 , and thereafter, the grinding work can be continued generally by the procedures of (1) and (2) described above. - The terms and expressions used in the present description and the claims are merely descriptive, are by no means restrictive, and are not intended to exclude terms and expressions equivalent to features described in the present description and claims and portions thereof. Also, various modifications are obviously possible within the scope of the technical ideas of the present invention.
-
- A
- Pulverizer
- 1
- Undercarriage
- 100
- Base
- 10
- Motor
- 101
- Rotating shaft
- 11
- Crawler
- 12
- Handle
- 2
- Grinding device
- 20
- Casing
- 200
- Supply opening
- 201
- Side plate
- 202
- Slot
- 203
- Stopper
- 204
- Stopper
- 205
- Stopper
- 21
- Supply duct
- 210
- Bottom plate
- 22
- Partition member
- 23
- Grinding rotor
- 230
- Rotating shaft
- 231
- Rotator
- 24
- Grinding blade
- 25
- Grinding space
- 26
- Screen
- 29
- Upper cover
- 3
- Feeder
- 30
- Arm slab
- 31
- Axial rod
- 32
- Bearing
- 33
- Feeding teeth roller
- 330
- Rotating shaft
- 331
- Feeding tooth
- 34
- Spring hook
- 35
- Electromagnetic clutch
- 36
- Stabilizer
- 37
- Pressing force release lever
- 370
- Axial rod
- 38
- Bracket
- 380
- Adjusting bolt
- 4
- Pressing force switching mechanism
- 40
- Spring hook arm
- 401
- On contacting portion
- 402
- Off contacting portion
- 403
- Hook pin
- 41
- Axial rod
- 42
- Tension spring
- 43
- Axially supporting part
- 44
- Supporting part
- 45
- Drive shaft
- 46
- Switching arm plate
- 460
- Roller
- 461
- On arm
- 462
- Off arm
- 463
- Pin
- 47
- Adjusting member
- 48
- Tension spring
- 480
- Spring hook
- 49
- Pressing force switching lever
- W
- Tree
Claims (7)
- A pressing force switching mechanism for rotation feeding part of a pulverizer, the mechanism comprising:a rotary feeding portion mounted to a movable body and capable of advancing and retreating in a direction of a feeding face on which a grinding object is placed and pressingly holding and feeding the grinding object to a grinding portion;a change point member having a change point in a movable direction, actuatable in two directions demarcated by the change point, and having a hooking portion that becomes a fixed end at a lock direction side in one of the two directions, becomes a free end at a free direction side in the other direction, and differs in position in settled states in the respective directions;an urging body hooked between the movable body and the hooking portion of the change point member, actuating the change point member in the two directions demarcated by the change point, and becoming a fixed end in the actuation of the change point member to the lock direction side to impart a pressing force in the feeding face direction to the feeding rotator; anda switching means acting on the change point member to switch the change point member between the two directions demarcated by the change point.
- The pressing force switching mechanism for rotation feeding part of a pulverizer according to claim 1, wherein the movable body has a plurality of arm slabs with a portion being axially supported turnably and has the rotary feeding portion mounted to span across the respective arm slabs.
- The pressing force switching mechanism for rotation feeding part of a pulverizer according to claim 1 or 2, wherein the switching means has a change point in a movable direction and is arranged to switch the change point member by actuation in two directions demarcated by the change point and the actuation is aided by an urging force.
- A pulverizer including a pressing force switching mechanism for rotation feeding part of a pulverizer, the pulverizer comprising:an undercarriage;a grinding device provided on the undercarriage and grinding a grinding object, such as a tree or the like; andthe pressing force switching mechanism for rotation feeding part of a pulverizer having a rotary feeding portion mounted to a movable body and capable of advancing and retreating in a direction of a feeding face on which the grinding object is placed and pressingly holding and feeding the grinding object to a grinding portion, a change point member having a change point in a movable direction, actuatable in two directions demarcated by the change point, and having a hooking portion that becomes a fixed end at a lock direction side in one of the two directions, becomes a free end at a free direction side in the other direction, and differs in position in settled states in the respective directions, an urging body hooked between the movable body and the hooking portion of the change point member, actuating the change point member in the two directions demarcated by the change point, and becoming a fixed end in the actuation of the change point member to the lock direction side to impart a pressing force in the feeding face direction to the feeding rotator, and a switching means acting on the change point member to switch the change point member between the two directions demarcated by the change point.
- The pulverizer including a pressing force switching mechanism for rotation feeding part of a pulverizer according to claim 4,
wherein the switching means has a change point in a movable direction and is arranged to switch the change point member by actuation in two directions demarcated by the change point and the actuation is aided by an urging force. - A pressing force switching method for rotation feeding part of a pulverizer,
wherein a change point member having a change point in a movable direction is moved by a switching means to a lock direction side among two directions demarcated by the change point to make a hooking portion be a fixed end and draw a rotary feeding portion in a direction of a grinding object by an urging body hooked between the rotary feeding portion and the bridging portion, and when the grinding object becomes stuck in the grinding portion, the change point member is moved by the switching means to a free direction side among the two directions demarcated by the change point to make the hooking portion be a free end and ease an urging force by the urging body that draws the rotary feeding portion in the direction of the grinding object. - The pressing force switching method for rotation feeding part of a pulverizer according to claim 6,
wherein the switching means has a change point in a movable direction and is arranged to switch the change point member by actuation, aided by an urging force, in two directions demarcated by the change point.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2018/004718 WO2019155634A1 (en) | 2018-02-09 | 2018-02-09 | Pressing force switching mechanism for rotation feeding part of pulverizer, pulverizer provided with same, and pressing force switching method for rotation feeding part of pulverizer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3584048A1 true EP3584048A1 (en) | 2019-12-25 |
EP3584048A4 EP3584048A4 (en) | 2020-12-30 |
Family
ID=65802992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18905648.4A Pending EP3584048A4 (en) | 2018-02-09 | 2018-02-09 | Pressing force switching mechanism for rotation feeding part of pulverizer, pulverizer provided with same, and pressing force switching method for rotation feeding part of pulverizer |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3584048A4 (en) |
JP (1) | JP6487610B1 (en) |
WO (1) | WO2019155634A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114345509B (en) * | 2022-01-08 | 2023-03-14 | 钟惠铃 | Paediatrics oral pill ration grinder |
CN117244621B (en) * | 2023-11-20 | 2024-01-26 | 浙江艾领创矿业科技有限公司 | Fine powder crushing device and process for iron ore |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1237290A (en) * | 1959-04-28 | 1960-07-29 | Gustin Fils Ets | Machine for cutting wood, especially sawmill waste |
JPS595528Y2 (en) * | 1978-09-08 | 1984-02-20 | 惣太 山本 | Safety device for scraping material to be cut in agricultural chipper |
JPS5683005U (en) * | 1979-11-27 | 1981-07-04 | ||
JPH065722Y2 (en) * | 1986-09-30 | 1994-02-16 | 株式会社山本製作所 | Material waste escape prevention device in feeding device of agricultural cutter |
JPH0314997Y2 (en) * | 1986-10-20 | 1991-04-03 | ||
JPH0425290Y2 (en) * | 1987-09-18 | 1992-06-17 | ||
US5060873A (en) * | 1990-05-21 | 1991-10-29 | Strong Manufacturing | Wood chipper fin chip separator |
JP5503110B2 (en) * | 2008-02-08 | 2014-05-28 | 大橋 弘幸 | Chipper and method for releasing biting of object to be crushed in chipper |
JP6091121B2 (en) | 2012-09-14 | 2017-03-08 | 株式会社カルイ | Tree crusher |
-
2018
- 2018-02-09 EP EP18905648.4A patent/EP3584048A4/en active Pending
- 2018-02-09 JP JP2018548471A patent/JP6487610B1/en active Active
- 2018-02-09 WO PCT/JP2018/004718 patent/WO2019155634A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP3584048A4 (en) | 2020-12-30 |
WO2019155634A1 (en) | 2019-08-15 |
JPWO2019155634A1 (en) | 2020-02-27 |
JP6487610B1 (en) | 2019-03-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3584048A1 (en) | Pressing force switching mechanism for rotation feeding part of pulverizer, pulverizer provided with same, and pressing force switching method for rotation feeding part of pulverizer | |
US6978955B2 (en) | Mill box for materials grinder | |
US5218766A (en) | Roofing removal apparatus | |
JP2009065840A (en) | Bamboo-cutting attachment and bamboo-cutting operating machine provided with it | |
US6474579B1 (en) | Wood processing systems and methods of constructing and using them | |
US20080098704A1 (en) | Plant clearing-grinding device | |
US7373960B1 (en) | Brush cutter | |
US6185919B1 (en) | Apparatus and method for removing plant stalks from a field and shredding the plant stalks | |
US3464468A (en) | Tree shearing,topping,and delimbing apparatus | |
US7992467B2 (en) | Shingle removing apparatus | |
JP3871914B2 (en) | Tree crusher | |
JP5503110B2 (en) | Chipper and method for releasing biting of object to be crushed in chipper | |
BR102014024257A2 (en) | DEVICE FOR CRUSHING MATERIAL, AND, METHOD FOR CLEANING A DRIVING ELEMENT OF A CRUSHING DEVICE | |
JP5469982B2 (en) | Grapple device and hydraulic excavator | |
US4763705A (en) | Tree felling apparatus | |
CN104741203A (en) | Mobile chipping machine | |
JP2001190148A (en) | Roll baler | |
JP3009891B1 (en) | Waste tire treatment method and apparatus | |
RU100014U1 (en) | BLADE CUTTING PLANT | |
JP4201425B2 (en) | Tree crusher with retractable hopper | |
CN204685229U (en) | Chipper | |
JPH0526090Y2 (en) | ||
JPS595528Y2 (en) | Safety device for scraping material to be cut in agricultural chipper | |
JP2005111840A (en) | Grinder | |
JPS5930003Y2 (en) | concrete crusher |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190916 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20201201 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B27L 11/02 20060101ALI20201125BHEP Ipc: B02C 18/06 20060101ALI20201125BHEP Ipc: B27L 11/00 20060101AFI20201125BHEP |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20221017 |