KR20080081660A - Shredder - Google Patents

Abstract

A crusher is provided to execute crushing work regardless of the rotational direction by forming first and second tip units performing crushing work for forward and reverse rotations, respectively at a cutter. A crusher having a hopper is composed of: a pair of rotary shafts(120) rotatably installed at the bottom of the hopper; a driving unit selectively generating and applying forward and reverse rotating power to the rotary shafts; and plural cutters(130) installed across each other at a pair of rotary shafts. The cutter comprises a cutter body(130a) mounted on the rotary shaft and plural cutting units(130b) protruded on the cuter body and provided with first and second tip units(132,134). The first tip unit is protruded to one side to execute crushing work when the rotary shafts turn forward. The second tip unit is protruded to the other side opposite to the first tip unit to execute crushing work when the rotary shafts turn reversely.

Description

Shredder {SHREDDER}

1 is a view showing a cutter of a conventional crusher,

2 is a perspective view showing a crusher according to an embodiment of the present invention;

Figure 3 is an exploded perspective view showing a crusher according to an embodiment of the present invention,

4 is an enlarged front view of main parts of a crusher according to an embodiment of the present invention;

5 is an exploded perspective view illustrating a cutter applied to a crusher according to an embodiment of the present invention;

6 is a front view showing a modification of the cutter applied to the crusher according to an embodiment of the present invention;

7 is a plan view showing a crusher according to an embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

110: hopper 120: axis of rotation

130: cutter 130a: cutter body

130b: cutting portion 131: coupling base

132: first tip portion 133: growth projection

134: second tip portion 136: fastening member

140: driving means 150: frame

160: fixed cutter 161: growth layer

170: fall prevention member 172: fixing frame

174: support plate 176: support member

The present invention relates to a crusher, and more particularly, to a crusher for crushing the crushed material introduced into the hopper by the rotation operation of the cutter coupled to the rotary shaft rotatably installed on the bottom of the hopper.

A shredder is used as a device used when shredding main raw materials to a predetermined size among manufacturing processes or processing processes of various industrial sites or shredding to a predetermined size in the process of processing industrial waste and household waste.

The crusher can be composed of various structures such as hydraulic type and electric type according to the type, size, throughput, and installation location of the crusher, but a plurality of cutters are alternately installed on a pair of rotating shafts rotated by the hydraulic drive motor. It is common that the crushed material flowing onto the cutter is configured to be crushed by the rotating cutter.

The cutter has a plurality of hooks protruding from the outer circumference of the cutter body, and when the cutter is rotated, the hook moves the crushed object to the crushed position to perform the crushing action between the cutters adjacent to each other.

Hooks protruding outward during the shredding process according to the rotation of the cutter are easily worn and the entire cutter must be replaced every time for effective shredding, which increases the downtime of the shredder and increases the maintenance cost. there was.

In order to solve this problem, the present inventor has proposed a "prefabricated cutter for shredder" as shown in the Republic of Korea Utility Model Publication No. 20-0228048.

As shown in FIG. 1, the assembled cutter for the shredder is combined with the tip 35 in the rotational direction of the hook 22 formed on the outer periphery of the cutter body 20 having a predetermined thickness. Hook 22 has an assembly portion 25 having an assembly protrusion 26 in the forward direction of the rotation direction, the tip 35 is configured to fasten to the fastening member 40 by forming a corresponding assembly groove 36 It was.

That is, since the tip 35 is separated from the cutter body 20, even if the tip 35 is worn or damaged during the shredding process, the tip 35 may be replaced by using only the tip 35, thereby eliminating the problem of replacing the entire cutter. there was.

However, in the conventional crusher cutter, since the hook 22 is formed in a sawtooth shape and the cutting part in which the crushing action is directly formed is formed only in one direction, the crushing action is performed only when the cutter is rotated in the direction in which the cutting part is formed. In this case, the shredding action cannot be performed in the reverse direction, and thus, if the foreign material is caught between the cutters during the shredding process or the forward rotation is not possible due to the overload caused by the inflow of the shredding material, the shredding operation cannot be performed.

Since the crushing position of the crushed object is performed only in the space between both rotating shafts corresponding to the intersections of the cutters to be rotated, the throughput that can be crushed per unit time is limited.

In addition, when the crusher is a relatively long crushed material is introduced from the upper side, the crushed product is dropped downward through the gap space formed at the intersection between the cutter and the cutter, and discharged to the outside in the state that the crushing action is not performed. , It is not possible to perform a smooth crushing operation, because the uncrushed crushed material must be collected and repeatedly put, there is a problem that the work time is increased, workability is reduced.

The present invention has been proposed in view of the above-described contents, and an object thereof is to provide a crusher to perform a crushing action during not only forward rotation but also reverse rotation of the cutter.

Another object of the present invention is to provide a crusher that can break the discharge of crushed material falling to the intersection of the cutter to be crushed.

Still another object of the present invention is to provide a crusher in which the crushing efficiency is improved by performing the crushing action on both sides of the inner wall surface of the hopper in addition to the intersection point of the cutter and the cutter.

In order to achieve the above object, the crusher of the present invention is a crusher equipped with a hopper, a pair of rotating shaft rotatably installed on the bottom of the hopper; Drive means for selectively generating a forward and reverse rotational force and applying it to the rotational shaft; And a cutter body installed on the rotating shaft and a first tip portion protruding to one side so as to perform a crushing action at the forward rotation of the rotating shaft, and a crushing action at the reverse rotation of the rotating shaft to the other side facing the first tip portion. And a plurality of cutting parts protruding on the cutter body, the second tip being protruded so as to protrude on the cutter body, and a plurality of cutters alternately installed on the pair of rotating shafts.

In the shredder according to the present invention, the first tip portion and the second tip portion of the cutting portion may be detachably configured on one side and the other side of the coupling base protruding from the cutter body.

The coupling base has a structure in which a through hole is formed in a rotational direction on a body protruding in a rectangular plate shape, and the first tip portion has a protrusion formed on one side thereof, and a close contact surface closely adhered to the coupling base on the other side thereof. The fastening groove communicating with the through hole is formed on the close contact surface of the formed body, the second tip portion is formed in the close contact surface in close contact with the coupling base on one side, the protrusion formed on the other side The fastening hole communicating with the through hole is formed to penetrate, and may be coupled by a fastening member inserted into the fastening hole, the through hole, and the fastening groove in order.

On the outer surfaces of the first tip portion and the second tip portion, a plurality of growth protrusions formed of a higher strength material than the material of the first tip portion and the second tip portion may protrude so as to reduce damage and wear of the surface during the fracture process.

In the crusher according to the present invention, a plurality of fixed cutters projecting a predetermined length on the left and right inner wall of the hopper corresponding to the cutter and the cutter, and crushed the crushed object by interaction with the cutter is rotated Characterized in that.

The fixed cutters may be configured such that the installation height is alternately different from each other so that the crushing action with the cutter is sequentially performed to disperse the crushing load.

The fixed cutter is formed in a form in which a plate-shaped member having a predetermined thickness converges toward the central protrusion, and is terminated. The growth layer is overlaid with a material of higher strength than the material of the fixed cutter on the upper surface and edge portions of both sides contacting the upper surface. This can be formed.

In the crusher according to the present invention, the fall prevention member having a predetermined width in the rotation axis installation direction is installed on the bottom of the hopper corresponding to the intersection of the cutter.

The anti-drop member is formed on the upper surface of the fixing frame having a rectangular frame shape, so that one end is coupled to both sides of the fixing frame and the other end is inclined upwardly on the left and right inner wall surfaces of the hopper. Can be configured.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view showing a crusher according to an embodiment of the present invention, Figure 3 is an exploded perspective view showing a crusher according to an embodiment of the present invention.

2 and 3, the crusher according to an embodiment of the present invention, the hopper 110 is accommodated in the crushed material, a pair of rotary shaft 120 is installed on the bottom of the hopper 110, the rotary shaft A plurality of cutters 130, which are arranged at regular intervals on the corresponding rotation axis and are alternately installed on each other, the driving means 140 is connected to the rotation shaft 120 to apply a driving force, and each of the components 110 Frames 150 on which the 120, 130 and 140 are installed and supported are provided.

Figure 4 is an enlarged front view of the main portion of the crusher according to an embodiment of the present invention, Figure 5 is an exploded perspective view showing a cutter applied to the crusher according to an embodiment of the present invention.

4 and 5, the cutter 130 includes a cutter body 130a having an insertion hole in which a rotation shaft 120 is installed at the center of a plate member having a predetermined thickness, and an edge portion of the cutter body 130a. It is composed of a plurality of cutting portion 130b is formed.

The cutting part 130b has a first tip part 132 protruding to one side so that a crushing action is performed during forward rotation of the rotary shaft 120, and the reverse side of the rotating shaft 120 to the other side facing the first tip part 132. The second tip portion 134 is formed to protrude so that the crushing action is performed.

Preferably, the first tip portion 132 and the second tip portion 134 of the cutting portion 130b are detachably configured at one side and the other side of the coupling base 131 protruding from the cutter body 130a, respectively.

The coupling base 131 is formed in a structure in which a through hole 131a is formed in a rotational direction on a body protruding in a rectangular plate shape.

The first tip part 132 communicates with the through hole 131a of the coupling base 131 in a body in which a protrusion 132a is formed at one side, and a contact surface 132b closely contacted with the coupling base 131 is formed at the other side. The fastening groove 132c is formed in a structure in which the fastening groove 132c is recessed to a predetermined depth toward the protrusion 132a on the contact surface 131b. At this time, the shape of the protrusion 132a is formed in the shape of a square pyramid.

The second tip portion 134 has a close contact surface 134b which is in close contact with the coupling base 131 on one side, and a fastening hole 134c communicating with the through hole 131a on the body on which the protrusion 134a is formed on the other side. The penetrating structure is formed, wherein the protrusion 134a has a wedge shape.

The first tip part 132 and the second tip part 134 are detachably coupled to the coupling base 131 by the fastening member 136, that is, the fastening member 136 is fastened to the second tip part 134. It is inserted through the ball 134c and passes through the through hole 131a of the coupling base 131 and is fastened on the fastening groove 132c of the first tip part 132.

Edge portions of the first tip portion 132 and the second tip portion 134 are in chamfering process, and the chamfering portion is coupled on the coupling base 131 by the fastening member 136. The purpose of the present invention is to improve workability during welding work performed to increase the fixing force of the first tip part 132 and the second tip part 134 and to increase the welding strength by facilitating penetration of the deposit.

Figure 6 is a front view showing a modification of the cutter applied to the crusher according to an embodiment of the present invention. As shown in the figure, the outer surfaces of the first tip portion 132 and the second tip portion 134 have higher strength than the materials of the first tip portion 132 and the second tip portion 134 so that the damage and wear of the surface are reduced during the crushing process. A plurality of growth protrusions 133 formed of a material protrudes.

For example, if the material of the first tip portion 132 and the second tip portion 134 is a steel material of KS standard SS440, the growth protrusion 133 has a rigidity greater than that of the first tip portion 132 and the second tip portion 134. It may be formed of chromium molybdenum steel (KS standard, SCM440), and the growth protrusion 133 is normally grown in a state where the first tip portion 132 and the second tip portion 134 are assembled on the coupling base 131. It is formed by the method.

And, the hatching portion not described in FIG. 6 is a portion where the weld metal is welded during the welding operation performed to fix the first tip portion 132 and the second tip portion 134 to the coupling base 131 more firmly. It is displayed.

Figure 7 is a plan view showing a crusher according to an embodiment of the present invention, as shown in the crushing action is performed at both sides of the inner wall surface of the hopper 110 in addition to the intersection of the cutter 130 and the cutter 130 A plurality of fixed cutters 160 are configured to improve efficiency.

The fixed cutter 160 protrudes to the left and right inner wall surfaces of the hopper 110 corresponding to the cutter 130 and the cutter 130 by a predetermined length, and causes the crushed material to be crushed by interaction with the rotated cutter 130. do.

As shown in FIGS. 3 and 4, the installation height of the fixed cutter 160 is alternately formed with a different height between the adjacent fixed cutter 160 and the load in the crushing process according to the interaction with the cutter 130. Distributed and overload is prevented.

That is, when a long length of crushed material is crushed into several pieces at once by the cutters 130 and the fixed cutters 160 repeatedly arranged by being repeatedly disposed, a large torque is required and an overload occurs. Therefore, if the installation height of the fixed cutter 160 is different, the crushing action is performed sequentially, so that the crushing load is dispersed.

The fixed cutter 160 is formed in a shape in which a plate member having a predetermined thickness converges toward the central protrusion, that is, formed in a substantially triangular or quadrangular plate member, and is arranged such that its thickness direction is disposed up and down, and the upper surface and the upper surface are in contact with each other. A growing layer 161 is formed on the edge portions of both sides of the fixing cutter 160 to be overlaid with a material of higher strength than that of the fixing cutter 160, thereby increasing durability against damage and abrasion during the crushing process.

On the other hand, the bottom of the hopper 110 is formed with a drop preventing member 170, as shown in Figure 3 and 4 fall prevention member 170 is a hopper 110 corresponding to the intersection of the cutter 130 Is formed so as to have a predetermined width in the front-rear direction (the installation direction of the rotating shaft) at the bottom.

The drop preventing member 170 blocks the long length of the crushed material introduced into the hopper 110 even if it falls downward through the gap space between the cutters 130, thereby preventing the falling of the crusher to the lower side of the crusher 130. The standing crushed object is crushed by the cutter 130.

In addition, the drop preventing member 170 is formed in the form of the support plate 172 is attached to the upper surface of the fixing frame 174 having a rectangular frame shape is fixed on the hopper 110 by a plurality of support members 176. The support member 176 is a rectangular plate-shaped member having one end coupled to both sides of the fixing frame 174 and the other end installed to be inclined upward on the left and right inner wall surfaces of the hopper 110, and the cutter 130 and the cutter 130. Installed repeatedly).

On the other hand, the drive means 140 for driving the rotary shaft 120 in the crusher according to the present invention is a pair of drive motors 142 which are installed at a predetermined interval and a pair of connected to the output shaft of each of the drive motors 142 It is configured to include a reducer 144, the drive motor 142 is composed of a hydraulic motor in which a large torque is generated.

The reduction gear 144 is provided with a high speed side reducer in which the output shaft is rotated at high speed due to a low speed reduction ratio, and a low speed side reducer in which the output shaft is rotated at a relatively low speed compared to the high speed side reducer gear.

Accordingly, the rotary shaft 120 connected to the high speed output shaft rotates at high speed, and the rotary shaft 120 connected to the low speed output shaft rotates at a relatively low speed, so that effective crushing action is caused by the speed deviation of the cutters 30 coupled thereto. It becomes possible.

Reference numeral 121 of FIG. 4 is a plurality of reinforcing ribs protruding at a predetermined angle along the longitudinal direction on the outer circumferential surface of the rotating shaft 120, increases the rigidity of the rotating shaft 120, the cutter 130 is on the rotating shaft 120 Insertion grooves are formed in the insertion hole side of the cutter 130 corresponding to the reinforcing rib 121 in a configuration for more firmly coupled to the.

Hereinafter, the operation of the crusher according to the present invention.

As shown in FIGS. 3 and 4, the driving means 140 is driven so that the crushed material is removed from the upper side of the hopper 110 in a state in which the rotating shaft 120 including the cutter 130 is rotated in the forward direction (counterclockwise direction). When the input, the crushed matter is located in the cutter 130 between the two rotating shafts 120 is crushed by the first tip portion 132 intersecting with each other, the crushed matter is located in the formation position of the fixed cutter 160 After the crushing action is performed by the interaction of the first tip portion 132 and the fixed cutter 160 is dropped and discharged downward into the gap between the support member 176.

At this time, the one side rotation shaft 120 rotates at a low speed with a relatively high torque, the other rotation shaft 120 rotates at a high speed, so that an effective crushing action according to the speed deviation of the cutter is performed.

As such, when foreign matter is introduced between the cutters 130 during the crushing process according to the forward rotation of the cutter 130, or when an overload occurs for various reasons such as excessive input of crushed materials, the second rotating part 120 is rotated in the reverse direction. Continuous crushing can be performed by 134.

That is, when the rotary shaft 120 is rotated in the reverse direction (clockwise) according to an operator's operation signal or a preset signal to be rotated in the reverse direction when an overload occurs, the crushed materials positioned at the cutter 130 portions between the two rotary shafts 120 are mutually opposite. The crushing action is performed by the second tip portion 134 intersecting, and the crushed material positioned at the position where the fixed cutter 160 is formed is also crushed in the reverse direction by the interaction of the second tip portion 134 and the fixed cutter 160. The action is performed.

In the forward and reverse crushing process as described above, when a relatively long crushed object is put in the transverse direction, the installation height of the fixed cutters 160 is different from each other. The lower fixing cutter 160 and the first tip portion having a lower installation height after the primary crushing operation by the interaction between the upper fixing cutter 160 and the first tip portion 132 having a high installation height during rotation are performed. Secondary shredding by the interaction of 132 is separated and sequentially performed.

Further, even when the cutter 130 is rotated in reverse, the crushed materials are sequentially crushed by the upper fixed cutter 160 and the lower fixed cutter 160, so that the crushing load is dispersed and smooth crushing can be performed without the occurrence of overload.

In the shredding process, when a relatively long shred is introduced into the gap between the cutter 130 and the cutter 130, the lower part is caught on the upper surface of the drop preventing member 170 and is not vertically dropped. In this case, since the longitudinal crushing is performed to the crushed object by the rotation operation of the cutter 130, it is possible to solve the problem that the crushed discharged without being crushed and re-injected repeatedly.

In addition, a growth protrusion 133 formed of a high strength material is formed on the first tip portion 132 and the second tip portion 134, and a growth layer 161 of high strength material is formed on the fixed cutter 160. Even if the impact and frictional force is applied in the damage degree is reduced and the wear time is extended, even if the first tip portion 132, the second tip portion 134, and the entire fixed cutter 160 is not made of expensive high-strength material is maintained high strength The durability can be improved.

 What has been described above is just one embodiment for carrying out the shredder according to the present invention, the present invention is not limited to the above-described embodiment, and the scope of the present invention as claimed in the claims below Without a doubt, those of ordinary skill in the art to which the invention belongs will have a technical spirit of the present invention to the extent that various modifications can be made.

As described above, the shredder according to an embodiment of the present invention, the cutter is provided with a first tip for performing the shredding action in the forward rotation, and the second tip for performing the shredding action in the reverse rotation, Since the crushing can be performed irrespective of the load, when an overload occurs during the forward crushing, the crushing operation can be continuously performed through the reverse rotation.

In addition, since the falling prevention member can be crushed by blocking the separation of the crushed object falling to the intersection of the cutter, there is an effect that the workability and crushing efficiency is improved.

In addition, since the crushing action is performed simultaneously on both sides of the inner wall surface of the hopper in addition to the intersection point of the cutter and the cutter, the crushing efficiency is improved. In particular, the fixed cutters are alternately formed with different installation heights so that the load is distributed during the crushing process with the cutter. Therefore, the overload is prevented to have a stable shredding effect.

Claims (9)

In a crusher equipped with a hopper, A pair of rotating shafts rotatably installed at the bottom of the hopper; Drive means for selectively generating a forward and reverse rotational force and applying it to the rotational shaft; And The cutter body installed on the rotating shaft and the first tip portion protruding to one side so that the crushing action is performed during the forward rotation of the rotary shaft and the other side facing the first tip so that the crushing action is performed during the reverse rotation of the rotary shaft. And a plurality of cutters protruding from the cutter body and having a plurality of cutters protruding from the cutter body, and having a plurality of cutters alternately installed on the pair of rotating shafts. The method of claim 1, The first tip portion and the second tip portion of the cutting portion, characterized in that the breaker is configured to be detachable on one side and the other side of the engaging base protruding from the cutter body. The method of claim 2, The coupling base is formed in a structure in which a through hole is formed in a rotational direction on a body protruding in a rectangular plate shape, The first tip portion has a structure in which a protrusion is formed at one side, and a fastening groove communicating with the through hole is formed on the contact surface of the body on which the contact surface is in close contact with the coupling base. The second tip portion has a close contact surface which is in close contact with the coupling base is formed on one side, the fastening hole communicating with the through hole is formed on the body formed with a protrusion on the other side, the fastening hole, the through hole, And crusher characterized in that coupled by the fastening member is inserted into the fastening groove order. The method according to any one of claims 1 to 3, On the outer surface of the first tip and the second tip portion, a plurality of growth protrusions formed of a higher strength material than the material of the first tip portion and the second tip portion protrudes so as to reduce the damage and wear of the surface during the fracture process crusher. The method of claim 1, And a plurality of fixed cutters which protrude to the left and right inner wall surfaces of the hopper corresponding to the cutters and the cutters, and a plurality of fixed cutters for crushing the crushed material by interaction with the cutter rotated. The method of claim 5, The fixed cutters are installed, the height of the installation alternately different crusher, characterized in that the crushing action with the cutter is performed sequentially so that the crushing load is dispersed. The method of claim 5, The fixed cutter is formed in a form in which a plate-shaped member having a predetermined thickness converges toward the central protrusion, and is terminated. The growth layer is overlaid with a material of higher strength than the material of the fixed cutter on the upper surface and edge portions of both sides contacting the upper surface. Crusher, characterized in that formed. The method according to any one of claims 1 to 3 and 5 to 7, And a drop preventing member having a predetermined width in a rotation shaft installation direction at a bottom of the hopper corresponding to the intersection of the cutters. The method of claim 8, The anti-drop member is formed on the upper surface of the fixing frame having a rectangular frame shape, so that one end is coupled to both sides of the fixing frame and the other end is inclined upwardly on the left and right inner wall surfaces of the hopper. Crusher, characterized in that configured.

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