EP0348510A1 - Self-propelled stone crusher - Google Patents
Self-propelled stone crusher Download PDFInfo
- Publication number
- EP0348510A1 EP0348510A1 EP19880909118 EP88909118A EP0348510A1 EP 0348510 A1 EP0348510 A1 EP 0348510A1 EP 19880909118 EP19880909118 EP 19880909118 EP 88909118 A EP88909118 A EP 88909118A EP 0348510 A1 EP0348510 A1 EP 0348510A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover member
- plate
- crusher
- stone
- stone crusher
- 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.)
- Ceased
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
- E02F5/305—Arrangements for breaking-up hard ground
Definitions
- the present invention relates to a self-propelled stone crusher for crushing dispersed stones on and under ground during leveling operation of agricultural ground and the like, and more particularly to a self-propelled stone crusher so constructed as to: be operated even on the soft ground without lowering its traveling performance; remove by itself such a large stone that can not be crushed therewith; and crush stones as it excavates the superficial earth of the ground.
- the self-propelled stone crusher of the present invention also performs the function of leveling the ground after stones are crushed.
- a conventional self-propelled stone crusher such as one made by Willy Bald Co., West Germany, which one is provided with a crusher 2 in its rear end portion with respect to a traveling direction of its wheel type vehicle 1 which pulls the crusher 2 in operation to enable the crusher 2 to crush stones dispersed on and under the ground of agricultural field and the like up to a predetermined depth of the ground.
- the crusher 2 is constructed of: an excavator 3 for picking up the stones; and a hammer rotor 4 for hitting the thus picked up stones at a headlong speed to crush the same.
- the hammer rotor 4 directly hit large stones dispersed on the ground as it moves downward.
- large crushing reaction is produced in the hammer rotor 4 at this time, which reaction must be borne on a rotary shaft 5 of the hammer rotor 4.
- the rotary shaft 5 must be firmly mounted in the crusher 2.
- large stones must be removed manually or by the use of stone picker, which cuts down efficiency in stone crushing operation or work of the crusher 2.
- penetration depth of the excavator 3 of the crusher 2 is relatively small to make it difficult for the crusher 2 to crush stones having covered with a relatively thick superficial earth of the ground.
- the crusher 2 since only rotational motion of the hammer rotor 4 contributes to stone- crushing operation or work of the crusher 2, the crusher 2 is relatively poor in stone-crushing efficiency.
- a self-propelled stone crusher vehicle comprising: a blade so mounted on a front portion of a vehicle body of the crusher vehicle as to be vertically movable, the vehicle body being provided with a crawler type traveling portion; and a stone crusher detachably mounted on a rear-end portion of the vehicle body with respect to a traveling direction of the vehicle body so as to be vertically movable.
- the self-propelled stone crusher vehicle as set forth in the above first embodiment, wherein: the stone crusher further comprises a sheet of ground leveling means mounted on its rear-end portion.
- a stone crusher comprising: a cover member so detachably connected to a rear-end portion of a crawler type construction vehicle through a connecting means as to be vertically movable; a rotary drum which is rotatably mounted on opposite-side portions of the cover member while detachably provided with a plurality of bits in its outer peripheral surface; repulsive plate means which cooperate with the rotary drum to perform the function of crushing stones, the repulsive plate means being so disposed in an inner surface of the cover member as to be spaced apart from each other and as to be sequentially fixed to the inner surface of the cover member in a rotational direction of the rotary drum; a granulating plate means; a sorter means; and a rotary-drum driving mechanism mounted on an outside of the cover member.
- a track frame 11 is mounted on each of opposite sides of a vehicle body 10 of a crawler type construction vehicle "A".
- a crawler track 14 runs round an idler wheel 12 and a sprocket wheel 13. These wheels 12 and 13 are disposed in a front and a rear portion of the track frame 11.
- a crawler type traveling portion 15 of the construction vehicle “A” has the above construction in which the sprocket wheel 13 is connected to an engine (not shown) through suitable transmission gears (not shown) such as a final reduction gear, a steering clutch/brake unit, a speed-change gear and a torque converter.
- a blade arm 16 is so connected to the track frame 11 as to be vertically swingable.
- a blade 17 is pivotally mounted on a front end of the blade arm 16.
- a lift cylinder 18 is so interposed between the blade 17 and a vehicle body 10 as to be rotatably connected therewith.
- a fertilizer distributer 19 is detachably mounted on the blade 17.
- the reference numeral 20 denotes a stone crusher which is so detachably mounted on a rear end of the vehicle "A" as to be vertically swingable.
- the stone crusher 20 is provided with a cover member 21 which opens to the ground.
- a bracket 23 is detachably mounted on the cover member 21 by means of bolts 22.
- another bracket 24 is mounted on a rear portion of the vehicle body 10.
- Both of a link 25 and a cylinder 26 are so interposed between theses brackets 23 and 24 as to be rotatable relative to them to enable the bracket 23 to vertically swing.
- a rotary drum 27 made of iron.
- a plurality of bit-mounting base members 28 are so fixedly mounted on an outer peripheral surface of the rotary drum 27 as to be spaced apart from each other in both of a circumferential and an axial direction of the rotary drum 27.
- a conical bit 29 is detachably mounted on each of these bit-mounting base members 28.
- the rotary drum 27 is connected to a motor 31 through a rotary-drum driving mechanism 30.
- the above rotary-drum driving mechanism 30 is provided with a case 32 which is mounted on one of the opposite side plates 21a, 21a of the cover member 21.
- the motor 31 is fixedly mounted on an upper portion of the case 32.
- a power-output shaft 31a of this motor 31 is connected to a rotary-drum driving shaft 36 through an upper sprocket wheel 33, chain 34 and a lower sprocket wheel 35. Consequently, the rotary drum 27 is rotatably driven by the motor 31 in the direction of the arrow shown in each of Figs. 5 and 8.
- a repulsive plate unit 40 sequentially mounted in an inner wall of the cover member 21 are : a repulsive plate unit 40, a granulating plate unit 41 and a sorter mechanism 42 so as to be spaced apart from each other in a rotational direction of the rotary drum 27, whereby these components cooperate with the rotary drum 27 to perform the function of crushing stones.
- a cover plate 43 is mounted on a rear portion of the cover member 21.
- a base plate 40c is inclined upward relative to the ground (so as to be parallel to the cover member 21).
- a plurality of bits 40d are so fixedly mounted on the base plate 40 as to be directed toward the ground.
- the number of the repulsive plate unit 40 shown in Fig. 5 is plural and arranged in a front portion of the inner surface of the cover member 21 with respect to the traveling direction of the vehicle "A".
- Each of such repulsive plate units 40 is provided with: a mounting plate 44 which is so mounted on the inner surface of the cover member 21 through a plurality of bolts/nuts 46 as to be movable along the inner surface of the cover member 21 over a predetermined wide range in the traveling direction of the vehicle "A" or in a direction counter to the traveling direction; and a repulsive plate 40a a base end of which is fixed to the mounting plate 44 through a longitudinal plate 45 to enable the repulsive plate 40a to be oppositely disposed from a path of each of the bits 29 through a suitable clearance.
- the above-mentioned predetermined wide range of adjustable distance of the mounting plate 44 depends on a longitudinal diameter of an elongated hole 44a of the mounting plate 44, in which elongated hole 44a is inserted a bolt of the bolts/nuts 46.
- the repulsive plate 44a is provided with a plurality of concave portions 40b in its front-end surface which is oppositely disposed from the rotary drum 27.
- a base-end portion of the granulating plate 41a is rotatably mounted on the inner surface of the cover member 21 through a pin 48.
- a lever element 49 is so provided as to be vertically movably supported by the cover member 21, a lower end of the lever element 49 being connected to a front-end portion of the granulating plate 41a.
- the lever element 49 is mounted on an outer surface of the cover member 21, and extends into the interior of a sleeve element 50 a bottom of which is opened so that an upper-end screw portion 49a of the lever element 49 extends outward from the bottom opening of the sleeve element 50, whereby the upper-end screw portion 49a of the lever element 49 is threadably engaged with a nut 51.
- the lever element 49 is resiliently urged downward under the influence of a compression spring 52 which is interposed between the inner surface of the sleeve element 50 and a large-diameter portion 49b provided in an intermediate portion of the lever element 49.
- the above-mentioned sorter mechanism 42 is provided with a plurality of longitudinal levers 42a which are so arranged as to be spaced apart from each other in a direction perpendicular to the traveling direction of the vehicle "A".
- the bits 29 of the rotary drum 27 crush stones dispersed in the ground. At this time, some of the stones dispersed under the ground are picked up on the ground by the bits 29 as the rotary drum 27 rotates.
- the stones picked up by the bits 29 fixedly mounted on the outer peripheral surface of the rotary drum 27 are prevented from being scattered so that the stones are repeatedly subjected to the shearing/compression forces and impacts caused by the bits 29 and the repulsive plates 40a, whereby the stones are efficiently crushed.
- the granulating plate 41a is substantially horizontally mounted substantially immediately on the rotary drum 27 so as to increase a space between itself and the the repulsive plates 40a to the maximum extent.
- the granulating plate 41a so directs the stones having collided against it as to hit again the bits 29 of the rotary drum 27.
- the front end of the granulating plate 41a which front end is oppositely disposed from the rotary drum 27, is curved downward so as to make it complicated to pass the stones, whereby the number of collisions of the stones between the bits 29 and the stones are increased.
- the granulating plate 41 When the lever element 49 is rotated, the granulating plate 41 is vertically swung on the pin 48 provided in its base-end portion to make it possible to adjust the clearances between the paths of the bits 29 of the rotary drum 27 and the front end of the granulating plate 41a according to an amount of the stones being crushed.
- the granulating plate 41a since the lever element 49 is urged downward under the influence of the compression spring 52, the granulating plate 41a performs the function of damping the impacts of the stones when it is hit by the stones.
- the granulating plate 41a may be vertically swung by means of a suitable cylinder (not shown).
- the thus granulated stones pass rearward through the longitudinal levers 42a, 42a which constitute the sorter mechanism 42 in which the longitudinal levers 42a, 42a are spaced apart from each other at predetermined intervals.
- the stones which can not pass through the sorter mechanism 42 collide against the longitudinal levers 42a, 42a so as to be rebounded toward the bits 29 of the rotary drum 27.
- the thus rebounded stones are hit again by the bits 29 while buried under the ground by the bits 29.
- a ground leveling plate 53 is mounted on a rear end of the cover member 21 of the stone crusher 20.
- the rear portion cover plate 43 of the stone crusher 20 is vertically swingably mounted on the pin 54 through a bracket.
- Other brackets 55, 55 are fixed to opposite sides of the cover plate 43.
- the ground leveling plate 53 is vertically swingably mounted through a supporting axle 56.
- a pair of levers 57, 57 each of which extends in the traveling direction of the vehicle "A" along the side portion of the cover plate 43 so as to be disposed at a substantially right angle relative to a pendulous portion of the ground leveling plate 53.
- each of the levers 57 In a position corresponding to an upper position of a front end of each of the levers 57, 57 is extended a front end of each of rods 58 which are fixedly mounted on opposite side portions of an upper surface of the cover plate 43.
- These rods 58, 58 are connected with the above levers 57, 57 through springs 59, 59 which keep the pendulous portion of the ground leveling plate 53 vertical.
- the ground leveling plate 53 is rotated on the supporting axle 56 so as to be swung upward ( i.e., so as to be rotated counterclockwise in Fig. 19B) against tensile forces exerted by the springs 59, 59.
- the ground leveling plate 53 is further swung upward to clear a dead point of an assembly of the levers 57, 57 and the springs 59, 59.
- the ground leveling plate 53 is so swung as to always keep a moment: P x A (see Fig. 19A) constant, which moment acts on the ground leveling plate 53 having been swingably supported on the supporting axle 56 under the influence of the tensile forces of the springs 59, 59. Consequently, an earth pressure distribution in the cover member 21 is kept substantially constant regardless of the amount of the earth and crushed stones deposited within the cover member 21.
- Fig. 20 is a graph illustrating the entire particle size distribution of the ground of agricultural field before and after execution of work or stone crushing operation. As is clearly understood from this graph, a cumulative weight percentage of stone particle size of from 25 to 150 mm of the ground after execution of work is improved by about 10 % relative to that of the ground before execution of work.
- FIGs. 21A and 21B there are shown sectional views of the ground of agricultural field: illustrating conditions of the surface and the interior of the ground of agricultural field before stone crushing tests are conducted; and illustrating conditions of the surface and the interior of the agricultural field after completion of stone crushing tests, respectively.
- Fig. 21B after execution of work or stone crushing operation by the use of the vehicle "A" of the present invention, substantially no stone remains in the superficial earth and the upper layer portion of the ground.
Abstract
A self-propelled stone crusher constructed so that it can be operated even on the soft ground without lowering of the travelling performance thereof, can remove by itself such a large stone that cannot be crushed therewith, and crush stones as it excavates the superficial earth. This crusher is provided with a blade (17) fixed to the front portion of a crusher body (10), which has a crawler type driving unit (15), in such a manner that the blade (17) can be vertically moved, and a stone crushing unit (20) fixed to the rear end portion of the crusher body (10) with respect to the travelling direction of the stone crusher so that the stone crushing unit (20) can be detached and vertically moved. This unit (20) has a rotary drum (27) which is supported rotatably on both side plates (21a,21a) of a cover member (21) opened toward the ground surface and which is provided with a plurality of bits (29) on the outer circumferential surface thereof; a repulsive plate unit (40), a granulating plate unit (41) and a sorter (42) which are arranged in a mutually spaced manner in the mentioned order in the rotational direction of the rotary drum (27) and fixed to the inner surface of the cover member (21) so that these units can crush stones in cooperation with the rotary drum (27).
Description
- The present invention relates to a self-propelled stone crusher for crushing dispersed stones on and under ground during leveling operation of agricultural ground and the like, and more particularly to a self-propelled stone crusher so constructed as to: be operated even on the soft ground without lowering its traveling performance; remove by itself such a large stone that can not be crushed therewith; and crush stones as it excavates the superficial earth of the ground.
- In addition, the self-propelled stone crusher of the present invention also performs the function of leveling the ground after stones are crushed.
- As shown in Fig. 1 of the accompanying drawings, known at present is a conventional self-propelled stone crusher such as one made by Willy Bald Co., West Germany, which one is provided with a
crusher 2 in its rear end portion with respect to a traveling direction of its wheel type vehicle 1 which pulls thecrusher 2 in operation to enable thecrusher 2 to crush stones dispersed on and under the ground of agricultural field and the like up to a predetermined depth of the ground. - In such a conventional self-propelled stone crusher, since the
crusher 2 is pulled by the wheel type vehicle 1, thecrusher 2 is poor in traveling performance on soft ground, and, therefore can not efficiently crush stones dispersed in the soft ground. - The
crusher 2 is constructed of: an excavator 3 for picking up the stones; and ahammer rotor 4 for hitting the thus picked up stones at a headlong speed to crush the same. When the blades of the excavator 3 are worn, thehammer rotor 4 directly hit large stones dispersed on the ground as it moves downward. As a result, large crushing reaction is produced in thehammer rotor 4 at this time, which reaction must be borne on arotary shaft 5 of thehammer rotor 4. In other words, therotary shaft 5 must be firmly mounted in thecrusher 2. In addition, in thecrusher 2, large stones must be removed manually or by the use of stone picker, which cuts down efficiency in stone crushing operation or work of thecrusher 2. - In addition, penetration depth of the excavator 3 of the
crusher 2 is relatively small to make it difficult for thecrusher 2 to crush stones having covered with a relatively thick superficial earth of the ground. - Furthermore, in the
crusher 2, since only rotational motion of thehammer rotor 4 contributes to stone- crushing operation or work of thecrusher 2, thecrusher 2 is relatively poor in stone-crushing efficiency. - In view of such circumstances of the prior art, the present invention was made. It is a first object of the present invention to provide a self-propelled stone crusher so constructed as to: be operated on the soft ground without lowering its traveling performance; remove by itself uncrushable large stones; and crush stones as it excavates the superficial earth of the ground.
- It is a second object of the present invention to provide a self-propelled stone crusher which can levels the ground after the stones dispersed on and under the ground are crushed.
- It is a third object of the present invention to provide a stone crusher which is excellent in stone-crushing efficiency while detachably mounted on a rear-end portion of a crawler type construction vehicle such as a bulldozer.
- In order to achieve the first object of the present invention, according to the first embodiment of the present invention, there is provided:
a self-propelled stone crusher vehicle comprising: a blade so mounted on a front portion of a vehicle body of the crusher vehicle as to be vertically movable, the vehicle body being provided with a crawler type traveling portion; and a stone crusher detachably mounted on a rear-end portion of the vehicle body with respect to a traveling direction of the vehicle body so as to be vertically movable. - In order to achieve the second object of the present invention, according to the second embodiment of the present invention, there is provided;
the self-propelled stone crusher vehicle as set forth in the above first embodiment, wherein: the stone crusher further comprises a sheet of ground leveling means mounted on its rear-end portion. - Further, in order to achieve the third object of the present invention, according to the third embodiment of the present invention, there is provided:
a stone crusher comprising: a cover member so detachably connected to a rear-end portion of a crawler type construction vehicle through a connecting means as to be vertically movable; a rotary drum which is rotatably mounted on opposite-side portions of the cover member while detachably provided with a plurality of bits in its outer peripheral surface; repulsive plate means which cooperate with the rotary drum to perform the function of crushing stones, the repulsive plate means being so disposed in an inner surface of the cover member as to be spaced apart from each other and as to be sequentially fixed to the inner surface of the cover member in a rotational direction of the rotary drum; a granulating plate means; a sorter means; and a rotary-drum driving mechanism mounted on an outside of the cover member. - The above objects, other objects, embodiments and advantages of the present invention will be apparent to those skilled in the art from the following description considered in connection with the accompanying drawings, submitted for purposes of illustration of the preferred embodiments of the present invention.
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- Fig. 1 is a schematic side view of an example of a conventional stone crusher;
- Figs. 2, 3 and 4 are a schematic side, a plan and a rear view of an embodiment of a stone crusher vehicle of the present invention, respectively;
- Fig. 5 is a schematic longitudinal sectional view of an embodiment of a stone crusher of the present invention;
- Fig. 6 is a schematic longitudinal sectional view of another embodiment of the stone crusher of the present invention, for illustrating an essential part of such another embodiment;
- Figs. 7 and 8 are a front and a side view of a rotary drum incorporated in the stone crusher shown in Figs. 5 and 6, respectively;
- Figs. 9 and 10 are a schematic longitudinal sectional and a schematic side view of a rotary-drum driving mechanism, respectively;
- Figs. 11, 12 and 13 are schematic plan views of a repulsive plate, a granulating plate and a sorter mechanism all of which are mounted in the stone crusher, respectively;
- Figs. 14 and 15 are schematic perspective views of the repulsive plate means and the granulating plate means, respectively;
- Fig. 16 is a longitudinal sectional view of a lever-element mounting portion of the granulating plate means;
- Fig. 17 is a longitudinal sectional view of the stone crusher, for illustrating stone crushing operation or work thereof;
- Fig. 18 is a schematic perspective view of another embodiment of the present invention, for illustrating a back portion of such another embodiment of the present invention;
- Figs. 19A, 19B and 19C are side views of such another embodiment of the present invention shown in Fig. 18, for illustrating action of such another embodiment of the present invention;
- Fig. 20 is a graph illustrating the entire particle size distribution of an agricultural field before and after execution of work or stone crushing test;
- Fig. 21A is a sectional view of the agricultural field, for illustrating conditions of the surface and the interior of the agricultural field before stone crushing test is conducted; and
- Fig. 21B is a sectional view of the agricultural field, for illustrating conditions of the surface and the interior of the agricultural field after completion of stone crushing test.
- Hereinbelow, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
- In the first place, as shown in Figs. 2 to 4, a
track frame 11 is mounted on each of opposite sides of avehicle body 10 of a crawler type construction vehicle "A". Acrawler track 14 runs round anidler wheel 12 and asprocket wheel 13. Thesewheels track frame 11. A crawlertype traveling portion 15 of the construction vehicle "A" has the above construction in which thesprocket wheel 13 is connected to an engine (not shown) through suitable transmission gears (not shown) such as a final reduction gear, a steering clutch/brake unit, a speed-change gear and a torque converter. - A
blade arm 16 is so connected to thetrack frame 11 as to be vertically swingable. Ablade 17 is pivotally mounted on a front end of theblade arm 16. Alift cylinder 18 is so interposed between theblade 17 and avehicle body 10 as to be rotatably connected therewith. In addition, afertilizer distributer 19 is detachably mounted on theblade 17. - The
reference numeral 20 denotes a stone crusher which is so detachably mounted on a rear end of the vehicle "A" as to be vertically swingable. - As shown in Fig. 5 in detail, the
stone crusher 20 is provided with acover member 21 which opens to the ground. Abracket 23 is detachably mounted on thecover member 21 by means ofbolts 22. On the other hand, anotherbracket 24 is mounted on a rear portion of thevehicle body 10. Both of alink 25 and acylinder 26 are so interposed betweentheses brackets bracket 23 to vertically swing. Betweenopposite side plates cover member 21 is rotatably mounted arotary drum 27 made of iron. As shown in Figs. 7 and 8, a plurality of bit-mounting base members 28 are so fixedly mounted on an outer peripheral surface of therotary drum 27 as to be spaced apart from each other in both of a circumferential and an axial direction of therotary drum 27. Aconical bit 29 is detachably mounted on each of these bit-mounting base members 28. Therotary drum 27 is connected to amotor 31 through a rotary-drum driving mechanism 30. - As shown in Figs. 1, 9 and 10, the above rotary-
drum driving mechanism 30 is provided with acase 32 which is mounted on one of theopposite side plates cover member 21. Themotor 31 is fixedly mounted on an upper portion of thecase 32. A power-output shaft 31a of thismotor 31 is connected to a rotary-drum driving shaft 36 through anupper sprocket wheel 33,chain 34 and alower sprocket wheel 35. Consequently, therotary drum 27 is rotatably driven by themotor 31 in the direction of the arrow shown in each of Figs. 5 and 8. - In addition, sequentially mounted in an inner wall of the
cover member 21 are : arepulsive plate unit 40, agranulating plate unit 41 and asorter mechanism 42 so as to be spaced apart from each other in a rotational direction of therotary drum 27, whereby these components cooperate with therotary drum 27 to perform the function of crushing stones. On the other hand, acover plate 43 is mounted on a rear portion of thecover member 21. - Incidentally, shown in Fig. 6 is another embodiment of the
repulsive plate unit 40 in which: abase plate 40c is inclined upward relative to the ground (so as to be parallel to the cover member 21). A plurality ofbits 40d are so fixedly mounted on thebase plate 40 as to be directed toward the ground. - In case that the
repulsive plate 40 has the construction shown in Fig. 6, stones having been hit at a position of a point D collide against thebits 40d to make it possible to improve stone-crushing efficiency in comparison with the embodiment shown in Fig. 5 in which the stones having been hit collide merely against the flat plate. - As shown in Fig. 14, the number of the
repulsive plate unit 40 shown in Fig. 5 is plural and arranged in a front portion of the inner surface of thecover member 21 with respect to the traveling direction of the vehicle "A". Each of suchrepulsive plate units 40 is provided with: a mountingplate 44 which is so mounted on the inner surface of thecover member 21 through a plurality of bolts/nuts 46 as to be movable along the inner surface of thecover member 21 over a predetermined wide range in the traveling direction of the vehicle "A" or in a direction counter to the traveling direction; and arepulsive plate 40a a base end of which is fixed to the mountingplate 44 through alongitudinal plate 45 to enable therepulsive plate 40a to be oppositely disposed from a path of each of thebits 29 through a suitable clearance. Incidentally, the above-mentioned predetermined wide range of adjustable distance of the mountingplate 44 depends on a longitudinal diameter of anelongated hole 44a of the mountingplate 44, in which elongatedhole 44a is inserted a bolt of the bolts/nuts 46. - In addition, as shown in Fig. 11, the
repulsive plate 44a is provided with a plurality ofconcave portions 40b in its front-end surface which is oppositely disposed from therotary drum 27. - In the
repulsive plate unit 40 having the above construction, as is clearly understood from Figs. 5 and 6, when the bolts/nuts 46 are loosened and then anadjustable screw 47 is rotatably driven clockwise or counterclockwise, it is possible to move therepulsive plate 40a relative to thecover member 21 as described above, whereby the operator of the vehicle "A" can control the clearances between the paths of the bits of therotary drum 27 and therepulsive plates 40a according to stone distribution conditions ( stone size, stone particle distribution pattern, stone content and the like ) of the ground. - As shown in Fig. 12, also in a front-end surface of a
granulating plate 41a of thegranulating plate unit 41 are formed a plurality ofconcave portions 41b which are oppositely disposed from therotary drum 27. Further, as shown in Fig. 5, a base-end portion of thegranulating plate 41a is rotatably mounted on the inner surface of thecover member 21 through apin 48. In addition, in order to make it possible to control the clearances between the paths of thebits 29 of therotary drum 27 and the front-end surface of thegranulating plate 41a, alever element 49 is so provided as to be vertically movably supported by thecover member 21, a lower end of thelever element 49 being connected to a front-end portion of thegranulating plate 41a. By extending or retracting thelever element 49 vertically, thegranulating plate 41a is vertically rotated on the pin 48 (in Fig. 5, thelever element 49 is rotated clockwise or counterclockwise) so that the clearances between the paths of the bits of therotary drum 27 and the front-end surface of thegranulating plate 41a are controlled. As shown in Fig. 16, thelever element 49 is mounted on an outer surface of thecover member 21, and extends into the interior of a sleeve element 50 a bottom of which is opened so that an upper-end screw portion 49a of thelever element 49 extends outward from the bottom opening of thesleeve element 50, whereby the upper-end screw portion 49a of thelever element 49 is threadably engaged with anut 51. As a result, thelever element 49 is resiliently urged downward under the influence of acompression spring 52 which is interposed between the inner surface of thesleeve element 50 and a large-diameter portion 49b provided in an intermediate portion of thelever element 49. When thenut 51 is rotated, thelever element 49 is vertically moved to enable thegranulating plate 41a to rotate on thepin 48 so as to be vertically swung on thepin 48, whereby the clearances between thebits 29 of therotary drum 27 and the front end of thegranulating plate 41a are suitably adjusted. - As shown in Fig. 13, the above-mentioned
sorter mechanism 42 is provided with a plurality oflongitudinal levers 42a which are so arranged as to be spaced apart from each other in a direction perpendicular to the traveling direction of the vehicle "A". - Now, stone crushing operation or work of the stone crusher will be described in detail with reference to Fig. 17.
- When the
rotary drum 27 is rotatably driven, thebits 29 of therotary drum 27 crush stones dispersed in the ground. At this time, some of the stones dispersed under the ground are picked up on the ground by thebits 29 as therotary drum 27 rotates. - The stones, which are still not crushed under the ground and picked up on the ground, collide against the
repulsive plates 40a and also against thebits 29 of therotary drum 27 again so as to be subjected to a secondary crushing operation or work under the influences of shearing/compression forces and impacts caused by these components. - At this time, the stones picked up by the
bits 29 fixedly mounted on the outer peripheral surface of therotary drum 27 are prevented from being scattered so that the stones are repeatedly subjected to the shearing/compression forces and impacts caused by thebits 29 and therepulsive plates 40a, whereby the stones are efficiently crushed. - The stones thus crushed by the
repulsive plates 40a and thebits 29 further collide against thegranulating plate 41a so as to be directed upward. As a result, the thus crushed stones hit again both of thebits 29 and therepulsive plates 40a to make it possible to repeatedly crush or granulate the stones between therepulsive plates 40a and thegranulating plate 41a. - Namely, the
granulating plate 41a is substantially horizontally mounted substantially immediately on therotary drum 27 so as to increase a space between itself and the therepulsive plates 40a to the maximum extent. In addition, thegranulating plate 41a so directs the stones having collided against it as to hit again thebits 29 of therotary drum 27. In this case, the front end of thegranulating plate 41a, which front end is oppositely disposed from therotary drum 27, is curved downward so as to make it complicated to pass the stones, whereby the number of collisions of the stones between thebits 29 and the stones are increased. When thelever element 49 is rotated, the granulatingplate 41 is vertically swung on thepin 48 provided in its base-end portion to make it possible to adjust the clearances between the paths of thebits 29 of therotary drum 27 and the front end of thegranulating plate 41a according to an amount of the stones being crushed. On the other hand, as shown in Fig. 16, since thelever element 49 is urged downward under the influence of thecompression spring 52, thegranulating plate 41a performs the function of damping the impacts of the stones when it is hit by the stones. Incidentally, thegranulating plate 41a may be vertically swung by means of a suitable cylinder (not shown). - Then, the thus granulated stones pass rearward through the
longitudinal levers sorter mechanism 42 in which thelongitudinal levers sorter mechanism 42 collide against thelongitudinal levers bits 29 of therotary drum 27. As a result, the thus rebounded stones are hit again by thebits 29 while buried under the ground by thebits 29. Consequently, the granulated stones are disposed in an upper layer of the ground, while the stones which are still not sufficiently crushed are crushed again by thebits 29 of therotary drum 27 and buried in a lower layer of the ground of the agricultural field. - According to further another embodiment of the present invention, as shown in Fig. 18, a
ground leveling plate 53 is mounted on a rear end of thecover member 21 of thestone crusher 20. - In other words, the rear
portion cover plate 43 of thestone crusher 20 is vertically swingably mounted on thepin 54 through a bracket. Other brackets 55, 55 are fixed to opposite sides of thecover plate 43. On these brackets 55, 55, theground leveling plate 53 is vertically swingably mounted through a supportingaxle 56. On opposite ends of the supportingaxle 56 are fixed a pair oflevers cover plate 43 so as to be disposed at a substantially right angle relative to a pendulous portion of theground leveling plate 53. In a position corresponding to an upper position of a front end of each of thelevers rods 58 which are fixedly mounted on opposite side portions of an upper surface of thecover plate 43. Theserods above levers springs ground leveling plate 53 vertical. - As a result, as shown in Fig. 19A, in case that the ground is excavated shallowly, the pendulous portion of the
ground leveling plate 53 is kept substantially vertical. On the other hand, in case that the ground is excavated deeply as shown in Fig. 19B, theground leveling plate 53 is rotated on the supportingaxle 56 so as to be swung upward ( i.e., so as to be rotated counterclockwise in Fig. 19B) against tensile forces exerted by thesprings cover member 21 during excavation of the ground, i.e., when theground leveling plate 53 is subjected to overload, as shown in Fig. 19C, theground leveling plate 53 is further swung upward to clear a dead point of an assembly of thelevers springs - As described above, the
ground leveling plate 53 is so swung as to always keep a moment: P x A (see Fig. 19A) constant, which moment acts on theground leveling plate 53 having been swingably supported on the supportingaxle 56 under the influence of the tensile forces of thesprings cover member 21 is kept substantially constant regardless of the amount of the earth and crushed stones deposited within thecover member 21. - On the other hand, when the large amount of earth and crushed stones are deposited within the
cover member 21 to considerably increase a traction load of the vehicle "A", i.e., in overload conditions of the vehicles "A", as shown in Fig. 19C, theground leveling plate 53 is swung extremely upward to reduce a traction resistance caused by such large amount of earth and crushed stones deposited within thecover member 21. - Advantages inherent in the stone crushing operation or work conducted by the self-propelled stone crusher of the present invention described in the above in detail are as follows:
- Immediately before the
stone crusher 20 conducts its stone crushing operation or work, the superficial earth of the ground is excavated by theblade 17 mounted on the front end portion of the crawler type construction vehicle "A" and uncrushable stones exceeding a predetermined size are removed. consequently, stone crushing efficiency of the self-propelled stone crusher vehicle "A" of the present invention is remarkably improved. In addition, in the vehicle "A" of the present invention, there is no fear that thestone crusher 20 is subjected to overload conditions. In addition, the vehicle "A" of the present invention does not require any preparatory work for removing large stones manually or by the use of other construction vehicles, which preparatory work is hitherto required. As a result, the vehicle "A" of the present invention is remarkably improved in operation effectiveness too. - Furthermore, in the vehicle "A" of the present invention, since its stone crushing operation or work is conducted immediately after the superficial earth of the ground is excavated, it can crush the stones dispersed in a relatively deep portion of the ground having been covered with a thick superficial earth.
- Results of tests for demonstrating the above advantages of the vehicle "A" of the present invention are shown in Figs. 20, 21A and 21B.
- Fig. 20 is a graph illustrating the entire particle size distribution of the ground of agricultural field before and after execution of work or stone crushing operation. As is clearly understood from this graph, a cumulative weight percentage of stone particle size of from 25 to 150 mm of the ground after execution of work is improved by about 10 % relative to that of the ground before execution of work.
- In Figs. 21A and 21B, there are shown sectional views of the ground of agricultural field: illustrating conditions of the surface and the interior of the ground of agricultural field before stone crushing tests are conducted; and illustrating conditions of the surface and the interior of the agricultural field after completion of stone crushing tests, respectively. As is clear from Fig. 21B, after execution of work or stone crushing operation by the use of the vehicle "A" of the present invention, substantially no stone remains in the superficial earth and the upper layer portion of the ground.
Claims (9)
1. A self-propelled stone crusher vehicle comprising:
a blade so mounted on a front portion of a vehicle body of said crusher vehicle as to be vertically movable, said vehicle body being provided with a crawler type traveling portion; and a stone crusher detachably mounted on a rear-end portion of said vehicle body with respect to a traveling direction of said vehicle body so as to be vertically movable.
a blade so mounted on a front portion of a vehicle body of said crusher vehicle as to be vertically movable, said vehicle body being provided with a crawler type traveling portion; and a stone crusher detachably mounted on a rear-end portion of said vehicle body with respect to a traveling direction of said vehicle body so as to be vertically movable.
2. The self-propelled stone crusher vehicle as set forth in claim 1, wherein: said stone crusher further comprises a ground leveling means which is mounted on its rear-end portion with respect to said traveling direction of said vehicle body so as to be vertically swingable.
3. A stone crusher comprising: a cover member detachably connected to a rear-end portion of a crawler type construction vehicle with respect to a traveling direction of said crusher through a connecting means so as to be vertically movable; a rotary drum which is rotatably mounted on opposite-side portions of said cover member while detachably provided with a plurality of bits in its outer peripheral surface; repulsive plate means which cooperate with said rotary drum to perform the function of crushing stones, said repulsive plate means being so disposed in an inner surface of said cover member as to be spaced apart from each other and as to be sequentially fixed to said inner surface of said cover member in a rotational direction of said rotary drum; a granulating means; a sorter means; and a rotary-drum driving mechanism mounted on an outside portion of said cover member.
4. The stone crusher as set forth in claim 3, wherein each of said repulsive plate means comprises: a mounting plate which is provided with a plurality of elongated holes so as to be movable over a predetermined distance along an inner surface of said cover member in said traveling direction of said vehicle body or in a direction counter to said traveling direction, said mounting plate being mounted on said cover member through a plurality of bolts/nuts inserted into said elongated holes of said mounting plate; and a repulsive plate which has its base end fixed to said mounting plate through a longitudinal plate and has its front-end surface oppositely disposed from paths of said bits mounted on said rotary drum.
5. The stone crusher as set forth in claim 3, wherein said granulating plate means comprises a granulating plate which has its base-end portion mounted rotatably on an inner surface of said cover member through a pin, and which plate is connected to a lower end of a lever element means supported by said cover member so as to have its front-end portion be vertically rotatable on said pin to make it possible that said front-end portion of said granulating plate oppositely disposed from said paths of said bits of said rotary drum is vertically movable.
6. The stone crusher as set forth in claim 3, wherein: said sorter means is constructed of a plurality of longitudinal levers which are spaced apart from each other in a direction perpendicular to said traveling direction of said crawler type construction vehicle.
7. The stone crusher as set forth in claim 4, wherein: said repulsive plate is provided with a plurality of concave portions in its front-end surface.
8. The stone crusher as set forth in claim 5, wherein: said granulating plate is provided with a plurality of concave portions in its front-end surface.
9. The stone crusher as set forth in claim 5, wherein said lever element means comprises: a sleeve element mounted on an outer surface of said cover member; a lever element which passes through said cover member and is provided with a screw portion in its upper end extending upward from an upper portion of said sleeve element, a lower end of said lever element being connected to a front-end portion of said granulating plate; a nut means threadably engaged with said screw portion of said lever element; and a compression spring for urging said lever element downward, said compression spring being interposed between an inner surface of said sleeve element and a large-diameter portion of said lever element, which large-diameter portion is formed in an intermediate portion of said lever element.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987161452U JPH0166805U (en) | 1987-10-23 | 1987-10-23 | |
JP161451/87U | 1987-10-23 | ||
JP1987161451U JPH0166804U (en) | 1987-10-23 | 1987-10-23 | |
JP161452/87U | 1987-10-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0348510A1 true EP0348510A1 (en) | 1990-01-03 |
EP0348510A4 EP0348510A4 (en) | 1990-02-20 |
Family
ID=26487592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880909118 Ceased EP0348510A4 (en) | 1987-10-23 | 1988-10-21 | Self-propelled stone crusher. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0348510A4 (en) |
WO (1) | WO1989003635A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003031725A1 (en) * | 2001-10-05 | 2003-04-17 | Fae Italia S.R.L. | Comminution machine |
WO2003062531A1 (en) * | 2002-01-24 | 2003-07-31 | Schenk Juergen | Milling device for floors, rock, excavated material or other material |
US7380576B2 (en) | 2001-10-05 | 2008-06-03 | Fae Italia S.R.L. | Milling tooth and milling tooth holder for a comminution machine |
EP2578749A3 (en) * | 2011-10-07 | 2015-01-21 | BOMAG GmbH | Rotor housing for a milling device for soil treatment, milling device and method for cleaning a rotor housing |
EP3593610A3 (en) * | 2018-07-13 | 2020-04-01 | Agro Forest Plus S.r.l. | Machine, product and method for building unsurfaced roads |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2797404B1 (en) * | 1999-08-10 | 2002-09-06 | Bugnot Ets | MOVABLE STONE CRUSHER |
CN103290773B (en) * | 2013-06-17 | 2015-08-12 | 广西柳工机械股份有限公司 | Milling equipment |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4560009A (en) * | 1984-05-10 | 1985-12-24 | Lindbeck Lester R | Apparatus for pulverizing aggregate masses of frangible materials on and below earth surfaces |
JPH0627107U (en) * | 1992-09-17 | 1994-04-12 | リョービ株式会社 | Blade adjustment device for rotating plane |
-
1988
- 1988-10-21 EP EP19880909118 patent/EP0348510A4/en not_active Ceased
- 1988-10-21 WO PCT/JP1988/001076 patent/WO1989003635A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8903635A1 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003031725A1 (en) * | 2001-10-05 | 2003-04-17 | Fae Italia S.R.L. | Comminution machine |
US7198428B2 (en) | 2001-10-05 | 2007-04-03 | Fae Italia S.R.L. | Comminution machine |
US7380576B2 (en) | 2001-10-05 | 2008-06-03 | Fae Italia S.R.L. | Milling tooth and milling tooth holder for a comminution machine |
WO2003062531A1 (en) * | 2002-01-24 | 2003-07-31 | Schenk Juergen | Milling device for floors, rock, excavated material or other material |
US7284345B2 (en) | 2002-01-24 | 2007-10-23 | Schenk Juergen | Milling device for floors, rock, excavated material or other material |
EP2578749A3 (en) * | 2011-10-07 | 2015-01-21 | BOMAG GmbH | Rotor housing for a milling device for soil treatment, milling device and method for cleaning a rotor housing |
EP3593610A3 (en) * | 2018-07-13 | 2020-04-01 | Agro Forest Plus S.r.l. | Machine, product and method for building unsurfaced roads |
Also Published As
Publication number | Publication date |
---|---|
WO1989003635A1 (en) | 1989-05-05 |
EP0348510A4 (en) | 1990-02-20 |
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