CN110302871B - Biax steel scrap shredder - Google Patents
Biax steel scrap shredder Download PDFInfo
- Publication number
- CN110302871B CN110302871B CN201910647597.1A CN201910647597A CN110302871B CN 110302871 B CN110302871 B CN 110302871B CN 201910647597 A CN201910647597 A CN 201910647597A CN 110302871 B CN110302871 B CN 110302871B
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- China
- Prior art keywords
- roll shaft
- cutter
- shaft
- spacer
- spacer bush
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 11
- 239000010959 steel Substances 0.000 title claims abstract description 11
- 125000006850 spacer group Chemical group 0.000 claims abstract description 139
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000001360 synchronised effect Effects 0.000 claims abstract description 10
- 230000009977 dual effect Effects 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 30
- 238000010008 shearing Methods 0.000 abstract description 25
- 230000006872 improvement Effects 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- 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
- B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
-
- 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
- B02C18/142—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with two or more inter-engaging rotatable cutter assemblies
-
- 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
- B02C18/18—Knives; Mountings thereof
- B02C18/182—Disc-shaped knives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
Abstract
The invention discloses a double-shaft scrap steel shredder which comprises a rack, a driving device, a torque limiter, a speed reducer, a box body, a left roll shaft, a right roll shaft, a plurality of cutter components and a synchronous mechanism, wherein the cutter components comprise cutter heads and spacers; the left roll shaft and the right roll shaft are installed in the box body, and the driving device drives the left roll shaft and the right roll shaft to rotate oppositely through the torque limiter and the speed reducer. The cutter disc and the spacer bush are combined split cutters, axial bosses are arranged in inner holes of the cutter disc and the spacer bush, axial grooves are circumferentially formed in the left roller shaft and the right roller shaft, the cutter disc and the spacer bush can be installed on the left roller shaft and the right roller shaft at intervals through the cooperation of the bosses and the grooves, the cutter disc and the spacer bush on the left roller shaft and the spacer bush on the right roller shaft are respectively and correspondingly arranged, teeth are circumferentially arranged on the cutter disc and the spacer bush, tooth tips of the cutter disc and the spacer bush which are mutually corresponding on the left roller shaft and the right roller shaft are mutually corresponding in shearing positions, so that the cutter disc and the spacer bush participate in shearing and tearing materials together, and the materials are easier to shear.
Description
Technical Field
The invention relates to the field of material processing equipment, in particular to a double-shaft scrap steel shredder.
Background
At present, scrap steel or scrap steel bars are shredded by a common shredder in the domestic and foreign scrap steel industry, so that the material type specification meets the steel-making requirement, and the following three problems exist in the conventional shredder in the market:
1) The shredder is generally driven by a motor, belt transmission and a speed reducer, and is driven by a low-speed high-torque motor and a high-torque speed reducer with higher power. The motor, belt transmission and speed reducer transmission modes are not compact, the gear box bears radial force of a belt, and the low-speed high-torque motor is monopoly abroad, and is high in price and long in purchasing period.
2) The cutter of the shredder belongs to a vulnerable part, and needs to be replaced frequently, and the existing shredder generally adopts an integral cutter, so that time and labor are wasted during replacement, and the use of customers is influenced; although a small number of manufacturers adopt split type cutters, the split type cutters are generally installed in a radial direction, the split type cutters are fixed by adopting positioning blocks and bolts, the positioning blocks are difficult to disassemble, and the risk of breaking the bolts is high.
3) The cutter head side edges on the left roller shaft and the right roller shaft of the existing double-shaft shredder form shearing and transversely shear horizontally entering materials; however, for vertically entering materials, the cutter head and a spacer bush opposite to the cutter head are used for extruding and breaking the materials in an extrusion mode, so that the energy consumption is high during extrusion and breaking, and the situation of continuous extrusion often occurs.
Disclosure of Invention
In order to fill the blank in the prior art, the invention provides a double-shaft scrap steel shredder.
The double-shaft scrap steel shredder comprises a frame, a driving device, a torque limiter, a speed reducer, a box body, a left roll shaft, a right roll shaft, a plurality of cutter components and a synchronous mechanism, wherein the cutter components comprise a cutter disc and a spacer bush; the left roll shaft and the right roll shaft are arranged in the box body, the cutter discs and the spacer sleeves which are arranged at intervals are respectively arranged on the left roll shaft and the right roll shaft, the spacer sleeves on the left roll shaft are correspondingly arranged with the cutter discs on the right roll shaft, and the cutter discs on the left roll shaft are correspondingly arranged with the spacer sleeves on the right roll shaft; the driving device is at least provided with two, and is also at least provided with two corresponding torque limiters and speed reducers which are matched with the driving device, the box body and the driving device are fixed on the frame, the driving devices are respectively arranged at two ends of the box body, the driving device at the front end of the box body drives the left roll shaft to rotate through the torque limiters and the speed reducers, and the driving device at the rear end of the box body drives the right roll shaft to rotate through the torque limiters and the speed reducers; the synchronous mechanism is used for ensuring that the left roll shaft and the right roll shaft synchronously rotate.
As an improvement of the scheme, the left roll shaft and the right roll shaft are arranged in parallel, and the left roll shaft and the right roll shaft rotate oppositely; grooves for installing the cutterhead and the spacer bush are formed in the left roll shaft and the right roll shaft.
As an improvement of the scheme, bosses matched with grooves of the left roll shaft or the right roll shaft are respectively arranged on the cutter disc and the spacer, the cutter disc and the spacer are sleeved on the left roll shaft and the right roll shaft through the bosses matched with the grooves, and the cutter disc or the spacer is axially fixed at two ends of the left roll shaft and the right roll shaft through locking devices.
As an improvement of the scheme, the grooves on the left roll shaft or the right roll shaft are dovetail grooves or T-shaped grooves.
As improvement of the scheme, the spacer bush and the cutter head are composed of at least two parts of bodies, the spacer bush on the left roll shaft and the inclined teeth of the cutter head are opposite in inclination direction around the shaft, and the spacer bush on the right roll shaft and the inclined teeth of the cutter head are opposite in inclination direction around the shaft.
As an improvement of the scheme, the cutter head comprises at least two cutter heads, wherein the periphery of each cutter head is provided with the helical teeth, the bottom of each cutter head is provided with the boss, and all cutter heads are combined together to form the cutter head with the inner hole; the spacer comprises at least two cutter bodies, wherein the periphery of each cutter body is provided with helical teeth, the bottom of each cutter body is provided with a boss, and all cutter bodies are combined together to form the spacer with an inner hole.
As an improvement of the scheme, on the axial projection surfaces of the left roll shaft and the right roll shaft, a connecting line when the helical tooth end part of the cutter disc on the left roll shaft and the helical tooth end part of the corresponding spacer bush on the right roll shaft are at the nearest point or the farthest point passes through the axial center point of the left roll shaft or the right roll shaft.
As an improvement of the scheme, on the axial projection surfaces of the left roll shaft and the right roll shaft, the helical tooth end parts of adjacent cutterhead on the left roll shaft or the right roll shaft are arranged in a staggered manner, and the helical tooth end parts of adjacent spacer bushes on the left roll shaft or the right roll shaft are arranged in a staggered manner.
As an improvement of the above-mentioned scheme, the synchronizing mechanism includes a synchronizing gear 1 and a synchronizing gear 2, and the synchronizing gear 1 and the synchronizing gear 2 are respectively mounted on the left roller shaft and the right roller shaft and meshed with each other.
As an improvement of the scheme, the distance between the end faces of the cutter assemblies arranged on the left roll shaft and the right roll shaft and the inner wall of the box body is larger than the width of a single cutter disc or a spacer bush.
The beneficial effects of the invention are as follows: the motor torque limiter and the speed reducer drive the left roll shaft and the right roll shaft to rotate, so that the arrangement is compact, the overload protection response time of the speed reducer and the motor is quick, the torque is large, the cost is low, and the period is short. The cutter disc and the spacer bush are of split type structures, and are directly matched with dovetail grooves or T-shaped grooves axially formed in the left roll shaft and the right roll shaft in an axial installation mode to be installed on the left roll shaft and the right roll shaft, so that the combined structure of the cutter disc and the spacer bush is more convenient to assemble and disassemble and is better in structural stress compared with the integral structure of the traditional cutter disc and the spacer bush. The cutter disc and the spacer bush are circumferentially provided with teeth, the cutter disc and the spacer bush are arranged on the left roller shaft and the right roller shaft at intervals, the cutter disc and the spacer bush on the left roller shaft are correspondingly arranged with the spacer bush and the cutter disc on the right roller shaft, and under the action of the synchronous mechanism, the cutter disc mutually corresponding to the left roller shaft and the right roller shaft and the tooth tip of the spacer bush are mutually corresponding to each other when in shearing positions, and the corresponding cutter disc and the tooth tip of the spacer bush jointly participate in shearing and tearing materials.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic diagram of the corresponding positions of a cutter head or spacer of a left roll shaft and a spacer or cutter head of a right roll shaft;
FIG. 4 is a cross-sectional view of the position of a cutter head or spacer of the left roller shaft corresponding to the spacer or cutter head of the right roller shaft;
FIG. 5 is a cross-sectional view of the position of the cutter head or spacer of the left roller shaft corresponding to the spacer or cutter head of the right roller shaft;
FIG. 6 is a schematic view of the structure of the left or right roll shaft of the present invention;
FIG. 7 is a cross-sectional view of the left or right roll shaft of the present invention after the cutter head and spacer are sleeved;
fig. 8 is a cross-sectional view of the left or right roller shaft of the present invention after the cutter disc and spacer are sleeved.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The present invention will be described in detail with reference to examples.
The present invention relates to a dual shaft scrap shredder, and preferred embodiments of the invention are described in further detail below. Note that, in the present invention, the position of the left roller 60 is defined as "left", and the position of the right roller 70 is defined as "right"; the position of the driving device 20 for driving the left roller shaft 60 to rotate is defined as "front", and the position of the driving device 20 for driving the right roller shaft 70 to rotate is correspondingly defined as "rear". For descriptive convenience, in the present invention, the spacer 82 and the beveled end of the cutterhead 81 are defined as tips, i.e., the end of the beveled shredded material end is defined as the tip.
As shown in fig. 1 to 4, a dual-shaft scrap steel shredder includes a frame 10, a driving device 20, a torque limiter 30, a speed reducer 40, a box 50, a left roll shaft 60, a right roll shaft 70, a plurality of cutter assemblies 80 and a synchronizing mechanism, wherein the cutter assemblies 80 comprise cutter heads 81 and spacers 82; the left roll shaft 60 and the right roll shaft 70 are installed in the box 50, the cutter discs 81 and the spacer sleeves 82 which are arranged at intervals are installed on the left roll shaft 60 and the right roll shaft 70 respectively, the spacer sleeves 82 on the left roll shaft 60 are correspondingly arranged with the cutter discs 81 on the right roll shaft 70, the cutter discs 81 on the left roll shaft 60 are correspondingly arranged with the spacer sleeves 82 on the right roll shaft 70, the corresponding arrangement positions are mutually corresponding, and therefore the cutter discs 81 and the spacer sleeves 82, which are mutually corresponding in position when the left roll shaft 60 and the right roll shaft 70 synchronously rotate in opposite directions, can mutually cooperate to cut materials. The driving device 20 is provided with at least two driving devices 20, at least two torque limiters 30 and speed reducers 40 which are matched with the driving device 20 are correspondingly provided, the box body 50 and the driving device 20 are fixed on the frame 10, the stability is higher, the driving device 20 is respectively arranged at two ends of the box body 50, the front ends of the left roll shaft 60 and the rear ends of the right roll shaft 70 are respectively connected with the speed reducers 40, the torque limiters 30 are arranged between the driving device 20 and the speed reducers 40, the driving device 20 at the front end of the box body 50 drives the left roll shaft 60 to rotate through the torque limiters 30 and the speed reducers 40, the driving device 20 at the rear end of the box body 50 drives the right roll shaft 70 to rotate through the torque limiters 30 and the speed reducers 40, so that the opposite rotation of the left roll shaft 60 and the right roll shaft 70 is realized, the arrangement is compact, the overload protection response time of the driving device 20 and the speed reducers 40 is fast, the overload protection equipment can be better, the service life of the equipment can be prolonged, and the torque is large and the cost is low; the synchronous mechanism is used for ensuring synchronous rotation of the left roll shaft 60 and the right roll shaft 70, so that the cutter head 81 and the spacer 82 which are correspondingly arranged are always in a corresponding state at the shearing position in synchronous opposite rotation of the left roll shaft 60 and the right roll shaft 70, and the shearing position is used for jointly shearing materials, namely, the position where the tooth tip of the cutter head 81 or the spacer 82 on the left roll shaft 60 is closest to the tooth tip of the spacer 82 or the cutter head 81 on the right roll shaft 70 which corresponds to the shearing position.
Preferably, the left roller shaft 60 and the right roller shaft 70 are arranged in parallel, and the left roller shaft 60 and the right roller shaft 70 rotate oppositely to realize shearing and tearing of the material by the cutter head 81 and the spacer 82 which are correspondingly arranged, so that the material is crushed; the cutter disc 81 and the spacer 82 are mounted on the left roller shaft 60 and the right roller shaft 70, a plurality of groups of axial grooves 100 for mounting the cutter disc 81 and the spacer 82 are formed in the circumferential direction, a plurality of groups of bosses 110 matched with the grooves 100 of the left roller shaft 60 or the right roller shaft 70 are respectively arranged on the cutter disc 81 and the spacer 82, the cutter disc 81 and the spacer 82 are matched with the grooves 100 formed in the left roller shaft 60 or the right roller shaft 70 through the arranged bosses 110, the grooves 100 are sleeved on the left roller shaft 60 and the right roller shaft 70, torque is born through the matching of the bosses 110 and the grooves 100, and the positioning blocks and bolts of the existing split cutter disc 81 and the spacer 82 are avoided, so that the split type cutter disc is convenient to mount. The cutter head 81 or the spacer 82 is axially fixed on the left roller shaft 60 and the right roller shaft 70 at two ends of the left roller shaft 60 and the right roller shaft 70 through a locking device 120, the locking device 120 comprises a locking nut, and the locking nut is sleeved at two ends of the left roller shaft 60 and the right roller shaft 70 to axially fix the cutter head 81 and the spacer 82.
As shown in fig. 5 to 8, the groove 100 on the left roller shaft 60 or the right roller shaft 70 is a dovetail groove 100 or a T-shaped groove 100, and the boss 110 disposed on the inner holes of the cutter head 81 and the spacer 82 corresponds to the groove 100, which is configured as a dovetail boss 110 or a T-shaped boss 110 that can be sleeved in the dovetail groove or the T-shaped groove, so as to ensure that the cutter head 81 and the spacer 82 are smoothly sleeved on the left roller shaft 60 and the right roller shaft 70, the groove 100 is configured as the dovetail groove or the T-shaped groove, and the cutter head 81 and the spacer 82 are sleeved on the left roller shaft 60 and the right roller shaft 70 by matching with the dovetail boss 110 or the T-shaped boss 110.
Preferably, the spacer 82 and the cutter head 81 are formed by at least two parts of bodies, so that the cutter head 81 or the spacer 82 are combined into the cutter head 81 or the spacer 82, when the teeth of the cutter head 81 or the spacer 82 are damaged in long-term operation and need to be replaced, the bodies corresponding to the damaged teeth are not needed to be replaced, in order to reduce the replacement cost, the number of the bodies of the cutter head 81 or the spacer 82 is preferably the same as the number of the teeth tips of the cutter head 81 or the spacer 82, and when a certain tooth tip is damaged, only the bodies corresponding to the damaged tooth tip need to be replaced.
Preferably, the cutter head 81 includes at least two cutter heads 811, the peripheral portion of each cutter head 811 is provided with the helical teeth, the bottom is provided with the boss 110, all cutter heads 811 are combined together to form the cutter head 81 with an inner hole, the helical teeth on the cutter head 81 incline clockwise, and the helical teeth on the cutter head 81 are cutters for actively shredding materials; the spacer 82 comprises at least two cutter bodies 821, wherein the periphery of each cutter body 821 is provided with inclined teeth, the bottom of each cutter body 821 is provided with the boss 110, all cutter bodies 821 are combined together to form the spacer 82 with an inner hole, the inclined teeth on the spacer 82 incline along the anticlockwise direction, and the inclined teeth on the spacer 82 are cutters for passively shredding materials. The cutter head 81 and the spacer 82 are of a combined structure, the cutter head 811 and the cutter body 821 are respectively combined into the disc-type cutter head 81 and the spacer 82, the bosses 110 are axially arranged in the inner holes of the cutter head 81 and the spacer 82, the grooves 100 formed in the left roll shaft 60 and the right roll shaft 70 are matched with the bosses 110, the cutter head 81 and the spacer 82 can be sleeved on the left roll shaft 60 and the right roll shaft 70, connecting bolts and positioning blocks of the conventional split cutter are omitted, the structure is simple, and the damaged cutter head 81 and the damaged spacer 82 are convenient to disassemble and replace.
As a preferable option of the above-mentioned solution, as shown in fig. 5, on the axial projection surface of the left roller shaft 60 or the right roller shaft 70, the planes of the tangential surfaces at the two ends of the cutter head 811 pass through the axial center point of the left roller shaft 60 or the right roller shaft 70, and the planes of the tangential surfaces at the two ends of the cutter body 821 also pass through the axial center point of the left roller shaft 60 or the right roller shaft 70, so that the cutter head 811 and the cutter body 821 can be combined into a disc cutter head 81 and a spacer 82 around the left roller shaft 60 or the right roller shaft 70, and the cutter head 81 and the spacer 82 after being combined are compact in structure and good in integration.
The tooth tips of the cutter disc 81 on the left roll shaft 60 and the tooth tips of the cutter disc 82 on the right roll shaft 70 are opposite in direction, and the tooth tips of the cutter disc 82 on the left roll shaft 60 and the tooth tips of the cutter disc 81 on the right roll shaft 70 are same in direction, when the tooth tips of the cutter disc 81 on the left roll shaft 60 or the right roll shaft 70 and the tooth tips of the cutter disc 82 corresponding to the tooth tips of the cutter disc 82 on the left roll shaft 60 or the left roll shaft 60 are in shearing positions, namely, the positions where the tooth tips of the cutter disc 81 on the left roll shaft 60 and the tooth tips of the cutter disc 82 on the cutter disc 82 are closest to the tooth tips of the cutter disc 82 on the corresponding right roll shaft 70 are in synchronous opposite directions, as the tooth tips of the cutter disc 82 on the left roll shaft 60 and the cutter disc 81 on the right roll shaft 70 are rotated to the shearing positions between the left roll shaft 60 and the right roll shaft 70 and correspond to each other, and when the tooth tips of the cutter disc 82 on the left roll shaft 60 and the cutter disc 81 on the right roll shaft 60 pass through the center line of the cutter disc 70 or the center line of the cutter disc 70 corresponding to the tooth tips of the cutter disc 70; the shearing position between the left roller shaft 60 and the right roller shaft 70 is a passage of the material, so that the corresponding spacers 82 on the left roller shaft 60 and the right roller shaft 70 and the tooth tips of the cutter head 81 will shear and tear the material at the shearing position no matter whether the material enters horizontally or vertically, thereby shearing the material.
Preferred embodiments of the split cutterhead 81 and spacer 82: each cutter head 81 can be composed of 6 cutter heads 811, each cutter head 811 is circumferentially arranged around the main shaft clockwise or anticlockwise, 12 dovetail grooves or T-shaped grooves are formed in the left roll shaft 60 or the right roll shaft 70, 2 bosses 110 are arranged at the bottom of each cutter head 811 and are matched with the dovetail grooves or the T-shaped grooves in the left roll shaft 60 or the right roll shaft 70, 6 cutter heads 811 jointly form one cutter head 81, and the spacer 82 is similar, because the cutter heads 81 are installed at intervals with the spacer 82, the locking nuts are sleeved at the two ends of the left roll shaft 60 and the right roll shaft 70 to axially fix the cutter heads 81 and the spacer 82, the cutter heads 81 and the spacer 82 can be stably fixed on the left roll shaft 60 or the right roll shaft 70 without installing any connecting bolts or positioning blocks, and the cutter heads 81 or the spacer 82 are pushed out along the axial direction of the left roll shaft 60 or the right roll shaft 70 during disassembly, so that the complex procedures of bolts, the disassembly and the spacer 82 are avoided, the disassembly and the spacer 82 are more convenient, the maintenance of the cutter heads 81 and the spacer 82 are more convenient, and the replacement cost is lower.
Preferably, the center distance between the left roller shaft 60 and the right roller shaft 70 is slightly larger than the sum of the radii of the tooth tops of the cutter head 81 and the spacer 82, namely the sum of the distances between the center of the cutter head 81 and the tooth tips of the cutter head 81 plus the distances between the center of the spacer 82 and the tooth tips of the spacer 82, so that a channel is reserved between the left roller shaft 60 and the right roller shaft 70 for cutting materials to pass through, and the cut materials drop to a storage box or a conveyor belt from the channel.
Preferably, teeth with opposite tooth tips are circumferentially arranged on the spacer 82 and the cutter disc 81 on the same roll shaft, and the spacer 82 and the cutter disc 81 on the same roll shaft are arranged at intervals, so that the tooth tips of the spacer 82 and the cutter disc 81 on the left roll shaft 60 and the tooth tips of the cutter disc 81 and the spacer 82 on the right roll shaft 70 can be mutually corresponding in shearing positions, when the left roll shaft 60 and the right roll shaft 70 rotate in opposite directions synchronously in shearing positions, the tooth tips of the cutter disc 81 on the left roll shaft 60 or the right roll shaft 70, the tooth tips of the spacer 82 on the corresponding right roll shaft 70 or the center of the left roll shaft 60 and the center of the right roll shaft 70 are collinear in shearing positions, and therefore, the left roll shaft 60 and the right roll shaft 70 can be ensured to jointly participate in shearing materials in shearing positions, and compared with the traditional material shredding modes in an extrusion mode, materials are easier to shear materials, and energy consumption and equipment loss are smaller.
As an alternative embodiment, the diameter of the spacer 82 is smaller than that of the cutter head 81, so that the linear speeds of the tooth tips of the cutter head 81 and the tooth tips of the spacer 82 are different, thereby achieving the effect of tearing the sheared materials, and the sheared materials are easier to tear and shear.
Preferably, the teeth of the spacer 82 on the left roller shaft 60 or the right roller shaft 70 are correspondingly arranged with the teeth on the cutter disc 81, and the tooth tip of the teeth on the spacer 82 and the tooth tip of the teeth on the cutter disc 81 corresponding thereto pass through the axial center point of the left roller shaft 60 or the right roller shaft 70 when the axial projection surface of the left roller shaft 60 or the right roller shaft 70 is at the nearest point or the farthest point, namely the axial center point of the shaft of the left roller shaft 60 or the right roller shaft 70 corresponding to the projection surface, so that the situation that the teeth tips of the cutter disc 81 and the spacer 82 corresponding to the left roller shaft 60 and the right roller shaft 70 participate in shearing materials together in shearing positions is ensured, the tooth number of the spacer 82 can be equal to the tooth number of the cutter disc 81 in tooth design, the tooth number of the spacer 82 can also be more than the tooth number of the cutter disc 81, and preferably the number of the teeth between two adjacent teeth on the spacer 82 corresponding to the two adjacent teeth on the cutter disc 81 is the same, namely the number of the teeth on the spacer 60 is an integral multiple of the teeth on the cutter disc 50.
Preferably, two adjacent cutterheads 81 mounted on the left roller shaft 60 or the right roller shaft 70 are staggered, that is, the cutterhead 81 is staggered by at least one groove 100 to be sleeved on the left roller shaft 60 or the right roller shaft 70 when being sleeved on the left roller shaft 60 or the right roller shaft 70, the number of staggered grooves 100 is changed according to the number of teeth on the cutterhead 81, and likewise, the adjacent spacer 82 on the same roller shaft is staggered by one groove 100 to be sleeved on the left roller shaft 60 or the right roller shaft 70 when being sleeved on the left roller shaft 60 or the right roller shaft 70, so that materials are sheared when cutterheads 81 of different groups and spacers 82 of different groups are not sheared, and shearing resistance is reduced.
As an alternative embodiment, if the required cutting width is wider, several groups of identical cutterheads 81 or spacers 82 may be stacked, and the spacers 82 may be provided as circular spacers 82 without teeth.
Preferably, the synchronizing mechanism comprises a synchronizing gear 1 and a synchronizing gear 2, the synchronizing gear 1 and the synchronizing gear 2 are respectively arranged on the left roll shaft 60 and the right roll shaft 70 and are meshed with each other, and the synchronizing mechanism drives the left roll shaft 60 and the right roll shaft 70 to synchronously rotate through the synchronizing gear 1 and the synchronizing gear 2 so as to ensure that the tooth tip of a cutter disc 81 on the left roll shaft 60 or the right roll shaft 70, the tooth tip of a spacer 82 on the corresponding right roll shaft 70 or the left roll shaft 60, the center of the left roll shaft 60 and the four points of the axle center point of the right roll shaft 70 are collinear when in a shearing position, thereby ensuring the shearing effect of the cutter disc 81 and the spacer 82 on materials.
Preferably, the distance between the end surfaces of the cutter assemblies 80 mounted on the left and right roller shafts 60 and 70 and the inner wall of the case 50 is greater than the width of the cutter head 81 or the spacer 82. In order to facilitate the disassembly and assembly of the damaged cutterhead 81 or spacer 82, the distance between the end face of the cutter assembly 80 mounted on the left roller shaft 60 and the right roller shaft 70 and the inner wall of the box 50 is larger than the width of the single cutterhead 81 or spacer 82, and since the cutterhead 81 and the spacer 82 are sleeved on the left roller shaft 60 or the right roller shaft 70, when the cutterhead 81 and the spacer 82 are disassembled, only the locking nuts arranged at the end parts of the left roller shaft 60 and the right roller shaft 70 are unscrewed, the cutterhead 81 and the spacer 82 are pushed out one by one along the grooves 100 arranged on the left roller shaft 60 or the right roller shaft 70, so that the cutterhead 81 and the spacer 82 are pushed out smoothly from the left roller shaft 60 or the right roller shaft 70, and the distance between the end face of the cutter assembly 80 mounted on the left roller shaft 60 and the right roller shaft 70 and the inner wall of the box 50 is set to be larger than the width of the single cutterhead 81 or the spacer 82, and the damaged cutterhead 81 or the spacer 82 can be pushed out smoothly for replacement.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution, which shall be covered by the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a biax steel scrap shredder, includes frame (10), drive arrangement (20), moment of torsion limiter (30), speed reducer (40), box (50), left roller (60), right roller (70), its characterized in that: the cutter assembly (80) comprises a cutter head (81) and a spacer bush (82); the left roll shaft (60) and the right roll shaft (70) are arranged in the box body (50), cutter discs (81) and spacer sleeves (82) which are arranged at intervals are respectively arranged on the left roll shaft (60) and the right roll shaft (70), the spacer sleeves (82) on the left roll shaft (60) are correspondingly arranged with the cutter discs (81) on the right roll shaft (70), and the cutter discs (81) on the left roll shaft (60) are correspondingly arranged with the spacer sleeves (82) on the right roll shaft (70); the driving device (20) is at least provided with two torque limiters (30) and speed reducers (40) which are matched with the driving device (20), the box body (50) and the driving device (20) are fixed on the frame (10), the driving device (20) is respectively arranged at two ends of the box body (50), the driving device (20) at the front end of the box body (50) drives the left roll shaft (60) to rotate through the torque limiters (30) and the speed reducers (40), and the driving device (20) at the rear end of the box body (50) drives the right roll shaft (70) to rotate through the torque limiters (30) and the speed reducers (40); the synchronous mechanism (90) is used for ensuring the synchronous rotation of the left roll shaft (60) and the right roll shaft (70);
the left roll shaft (60) and the right roll shaft (70) are arranged in parallel, and the left roll shaft (60) and the right roll shaft (70) rotate oppositely; grooves (100) for installing a cutter head (81) and a spacer bush (82) are formed in the left roll shaft (60) and the right roll shaft (70); the cutter head (81) and the spacer bush (82) are respectively provided with a boss (110) matched with the grooves (100) of the left roll shaft (60) or the right roll shaft (70), the cutter head (81) and the spacer bush (82) are matched with the grooves (100) through the boss (110), the cutter head (81) or the spacer bush (82) is sleeved on the left roll shaft (60) and the right roll shaft (70), and the two ends of the left roll shaft (60) and the right roll shaft (70) are axially fixed through locking devices (120).
2. A dual shaft scrap shredder in accordance with claim 1 wherein: the grooves (100) are dovetail grooves (100) or T-shaped grooves (100), and the bosses (110) are dovetail bosses (110) or T-shaped bosses (110) correspondingly.
3. A dual shaft scrap shredder in accordance with claim 1 wherein: the spacer bush (82) and the cutter head (81) are composed of at least two parts of bodies, the spacer bush (82) on the left roll shaft (60) and the inclined teeth of the cutter head (81) are opposite in inclination direction around the shaft, and the spacer bush (82) on the right roll shaft (70) and the inclined teeth of the cutter head (81) are opposite in inclination direction around the shaft.
4. A dual shaft scrap shredder in accordance with claim 3 wherein: the cutterhead (81) comprises at least two cutter heads (811), wherein the periphery of each cutter head (811) is provided with the helical teeth, the bottom of each cutter head is provided with the boss (110), and all cutter heads (811) are combined together to form the cutterhead (81) with the inner hole; the spacer bush (82) comprises at least two cutter bodies (821), wherein the periphery of each cutter body (821) is provided with inclined teeth, the bottom of each cutter body is provided with a boss (110), and all cutter bodies (821) are combined together to form the spacer bush (82) with an inner hole.
5. A dual shaft scrap shredder in accordance with claim 4 wherein: on the axial projection surfaces of the left roll shaft (60) and the right roll shaft (70), a connecting line when the helical tooth end part of the cutter disc (81) on the left roll shaft (60) and the helical tooth end part of the corresponding spacer bush (82) on the right roll shaft (70) are at the nearest point or the farthest point passes through the axial center point of the left roll shaft (60) or the right roll shaft (70).
6. A dual shaft scrap shredder in accordance with claim 2 wherein: on the axial projection surfaces of the left roll shaft (60) and the right roll shaft (70), the helical tooth end parts of adjacent cutterhead (81) on the left roll shaft (60) or the right roll shaft (70) are arranged in a staggered way, and the helical tooth end parts of adjacent spacer bush (82) on the left roll shaft (60) or the right roll shaft (70) are arranged in a staggered way.
7. A dual shaft scrap shredder in accordance with any of claims 1-5 wherein: the synchronizing mechanism (90) comprises a synchronizing gear A and a synchronizing gear B which are respectively arranged on the left roll shaft (60) and the right roll shaft (70) and meshed with each other.
8. The dual shaft scrap shredder of claim 7 wherein: the distance between the end surfaces of the cutter assemblies (80) arranged on the left roll shaft (60) and the right roll shaft (70) and the inner wall of the box body (50) is larger than the width of a single cutter disc (81) or a spacer bush (82).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910647597.1A CN110302871B (en) | 2019-07-17 | 2019-07-17 | Biax steel scrap shredder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910647597.1A CN110302871B (en) | 2019-07-17 | 2019-07-17 | Biax steel scrap shredder |
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| CN110302871B true CN110302871B (en) | 2024-03-26 |
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| JP2007307520A (en) * | 2006-05-22 | 2007-11-29 | Shin Nippon Yogyo Kk | Complex biaxial crusher |
| CN201997367U (en) * | 2010-12-17 | 2011-10-05 | 广州市联冠机械有限公司 | Double-shaft shredding machine |
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| CN110302871A (en) | 2019-10-08 |
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