CN104588167B - Disintegrating machine - Google Patents
Disintegrating machine Download PDFInfo
- Publication number
- CN104588167B CN104588167B CN201510048345.9A CN201510048345A CN104588167B CN 104588167 B CN104588167 B CN 104588167B CN 201510048345 A CN201510048345 A CN 201510048345A CN 104588167 B CN104588167 B CN 104588167B
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- Prior art keywords
- roll
- breaker roll
- gear ring
- broken
- roll shaft
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/04—Crushing or disintegrating by roller mills with two or more rollers specially adapted for milling paste-like material, e.g. paint, chocolate, colloids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/42—Driving mechanisms; Roller speed control
- B02C4/423—Driving mechanisms; Roller speed control with vibrating or oscillating mechanisms
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses a kind of disintegrating machine, including hopper, active breaker roll, driven breaker roll and the drive device for driving active breaker roll to rotate, active breaker roll is rotatably installed in hopper with driven breaker roll and is connected by transmission mechanism, active breaker roll and driven breaker roll include that roll shaft and multiple are spaced the broken gear ring being connected on roll shaft successively, each broken gear ring is equipped with the crushing teeth that multiple axis around roll shaft are evenly arranged, all broken gear rings are divided into more than two sections along the axis direction of roll shaft, relative rotation angle between same section of broken gear ring around the axis of roll shaft is zero, axis between adjacent two sections of broken gear ring around roll shaft has relative rotation angle.The present invention has the advantages that simple structure, crushing effect are good, crushing efficiency is high, uniform force, stable and reliable operation, capable of reducing energy consumption.
Description
Technical field
The present invention relates to crushing mechanism technical field, and in particular to a kind of disintegrating machine.
Background technology
Fluorine contained chemicals production is divided into two kinds of techniques of wet method and dry method, and wet processing can all produce substantial amounts of wet fluorite
Cream, hydrofluoric acid per ton discharges 4 tons or so of fluorgypsum.And the processing mode that wet fluorgypsum is generally stacked naturally using fill, with
The passage of time, it is to contain certain crystallization water (15-18%), attached water (15-40%), sulfur trioxide that anhydrous gypsum is gradated
(30-40%), the layering bulk gypsum of (1-8MPa) with certain degree of hardness.Scientific research, production practices all prove that fluorgypsum is complete
The natural gypsum can be substituted as cement retarder, realization is turned waste into wealth, the purpose of resource circulation utilization.However, fluorgypsum is broken
There are problems that during broken processing and utilization it is many, at present using jaw crusher, chain-type disintegrating machine, hammerhead disintegrating machine, general
There is many deficiencies in logical double-roll crusher, for example：Jaw crusher is unsuitable for moisture content viscous material high；Chain type is crushed
Machine and hammerhead disintegrating machine are broken moisture content is high, tough fluorgypsum when, viscous casing is very serious, difficult treatment.Contain broken
During the low fluorgypsum of water rate, because rotating speed is high, airborne dust is big, separately due to high speed rotation chain and tup eccentric charging feelings
Under condition, larger vibration is easily produced, equipment is fragile, and maintenance cost is high, also there is chain, tup and be broken because of fatigue strength
Fly out situation about hurting sb.'s feelings, and causes security incident；There is complex structure, safeguard into common double-roll crusher and band tooth double-roll crusher
The shortcomings of this height, noise are big, the broken airborne dust of siccative is big.Above equipment is all present to be needed to carry out coarse crushing processing, can just be carried out
Further, there is whole crushing process long flow path in problem in small, broken bits, and equipment is more, and environment is poor, production cost shortcoming high, greatly
The processing and utilization of fluorgypsum is limited, processing equipment is crushed there is presently no special wet fluorgypsum.
The content of the invention
The technical problem to be solved in the present invention is to overcome the shortcomings of that prior art is present, there is provided a kind of simple structure, broken
Effect is good, crushing efficiency is high, uniform force, stable and reliable operation, disintegrating machine capable of reducing energy consumption.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of disintegrating machine, including hopper, active breaker roll, driven breaker roll and for drive active breaker roll rotate
Drive device, the active breaker roll is rotatably installed in hopper with driven breaker roll and is connected by transmission mechanism, described
Active breaker roll and driven breaker roll include that roll shaft and multiple are spaced the broken gear ring being connected on roll shaft successively, and each breaks
Broken gear ring is equipped with the crushing teeth that multiple axis around roll shaft are evenly arranged, all broken gear rings along roll shaft axis direction successively
It is divided into more than two sections, the relative rotation angle between same section of broken gear ring around the axis of roll shaft is zero, adjacent two sections broken
The axis of the spaced winding roll shaft of broken gear ring has relative rotation angle.
As a further improvement on the present invention：
Along the axis direction of roll shaft, the broken relative rotation angle between gear ring and other each section of broken gear ring of first paragraph around
Same direction is incremented by paragraph by paragraph.
Relative rotation angle θ=360 °/(N1 × N2) between adjacent two sections of broken gear rings, wherein N1 are in broken gear ring
The quantity of crushing teeth, N2 is the hop count that broken gear ring is divided into.
Each broken gear ring is equipped with five crushing teeths, and all broken gear rings are divided into three sections, adjacent two in the axial direction
Relative rotation angle between the broken gear ring of section around the axis of roll shaft is 24 °.
Length positioned at middle single stage crushing gear ring is less than each section of length of broken gear ring positioned at both sides；The crushing teeth
The diameter ratio of height and roll shaft be 0.25~0.65.
Comb material tooth, institute are inserted between two broken gear rings of arbitrary neighborhood of the active breaker roll and driven breaker roll
Comb material tooth is stated to be fixed on hopper.
The comb material tooth extends to the underface of roll shaft and is set near roll shaft.
The crushing teeth is that the direction rotated to roll shaft inclines the tooth plate being disposed to extend, and the top of the tooth plate is in pointed tooth
Shape, the side that the tooth plate is located at the rotation direction side of roll shaft is in arcs of recesses, and the tooth plate is located at the rotation direction with roll shaft
The side of opposite side is in convex.
It is provided with the transverse blocking-rod set across hopper in the hopper, the transverse blocking-rod is located at active breaker roll and driven broken
The top of roller；Vibrator is equiped with the hopper.
The active breaker roll and driven breaker roll are installed on hopper by self-aligning ball bearing, and the transmission mechanism is to divide
It is not installed on active breaker roll and driven breaker roll and intermeshing two linkage gears；The drive device includes electricity
Machine, belt reduction gearing mechanism and gear reduction box, the motor are defeated with gear reduction box by belt reduction gearing mechanism
Enter axle to be connected, the output shaft of the gear reduction box is connected by shaft coupling with one end of the active breaker roll, the linkage
Gear is located at active breaker roll and driven breaker roll near one end of shaft coupling.
Compared with prior art, the advantage of the invention is that：Gear ring is crushed in disintegrating machine of the invention and uses subsection setup,
And the relative rotation angle between same section of broken gear ring around the axis of roll shaft is zero, between adjacent two sections of broken gear ring around
The axis of roll shaft has relative rotation angle, and this kind of arrangement can disperse the power suffered by roll shaft, make roll shaft stress more equal
It is even, can not only increase breaking capacity, and operated steadily beneficial to disintegrating machine, and reducing energy consumption；Meanwhile, the layout for crushing gear ring is set
Be conducive to the block sectional feeding of the materials such as fluorgypsum, the broken, cyclic process of discharging, cement industry can be reached slow to gypsum
The requirement that particle is uniform, powder is few of solidifying agent, its crushing effect is good, crushing efficiency is high.Crusher structure of the invention is simple, whole
Machine is easy to operate, safeguards simple, and safety coefficient is high, and execute-in-place environment is good, and noise is low, airborne dust is small, low production cost.This is crushed
Machine is particularly suited for fluorgypsum lump material to wet production etc. and crushes, homogenizing, to wet fluorgypsum and and fluorgypsum
The broken processing of the chemical gypsums such as titanium gypsum, ardealite with close physical property and clay, with important reality meaning
Justice.
Brief description of the drawings
Fig. 1 is the main structure diagram of disintegrating machine of the present invention.
Fig. 2 is the side-looking topology view of disintegrating machine of the present invention.
Fig. 3 is the side sectional structure view of disintegrating machine of the present invention.
Fig. 4 is the overlooking the structure diagram of hopper in disintegrating machine of the present invention.
Fig. 5 is the plan structure view of active breaker roll and driven breaker roll in hopper in disintegrating machine of the present invention.
Fig. 6 is the plan structure view of active breaker roll in disintegrating machine of the present invention.
Fig. 7 is the side-looking topology view of active breaker roll in disintegrating machine of the present invention.
Fig. 8 is the arrangement schematic diagram of the broken gear ring of first paragraph of active breaker roll in Fig. 6.
Fig. 9 is the arrangement schematic diagram of the broken gear ring of second segment of active breaker roll in Fig. 6.
Figure 10 is the 3rd section of arrangement schematic diagram of broken gear ring of active breaker roll in Fig. 6.
Marginal data：
1st, hopper；2nd, active breaker roll；3rd, driven breaker roll；41st, motor；42nd, belt reduction gearing mechanism；43rd, gear
Reduction box；44th, shaft coupling；5th, comb material tooth；6th, transverse blocking-rod；7th, vibrator；100th, roll shaft；200th, gear ring is crushed；201st, crushing teeth.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figures 1 to 7, disintegrating machine of the invention, including hopper 1, active breaker roll 2, driven breaker roll 3 and use
In the drive device for driving active breaker roll 2 to rotate, active breaker roll 2 and driven breaker roll 3 are arranged side by side and rotatably install
In hopper 1, and synchronous axial system is realized by the way that transmission mechanism is connected, active breaker roll 2 and driven breaker roll 3 include roll shaft
100 and multiple be spaced the broken gear ring 200 being connected on roll shaft 100 successively, each broken gear ring 200 be equipped with multiple around roller
The crushing teeth 201 that the axis of axle 100 is evenly arranged, the broken gear ring 200 on active breaker roll 2 and driven breaker roll 3 is mutually handed over
Error articulation is arranged.All broken gear rings 200 are divided into more than two sections, same section of crushing teeth along the axis direction of roll shaft 100
The relative rotation angle of the axis of the spaced winding roll shaft 100 of circle 200 is zero, the spaced winding roll shaft 100 of adjacent two sections of broken gear ring 200
Axis there is relative rotation angle.
In the present embodiment, along the axis direction of roll shaft 100, first paragraph crushes gear ring 200 and other each section of broken gear ring 200
Between relative rotation angle be incremented by paragraph by paragraph around same direction, namely along the axis direction of roll shaft 100, latter section of broken gear ring
200 have relative rotation angle relative to the last period broken gear ring 200, and latter section of broken gear ring 200 is broken relative to the last period
The direction of the rotation of broken gear ring 200 is identical.Also, the relative rotation angle θ=360 °/(N1 between adjacent two sections of broken gear rings 200
× N2), wherein N1 is the quantity of crushing teeth 201 in broken gear ring 200, and N2 is the hop count that broken gear ring 200 is divided into.
In the present embodiment, active breaker roll 2 and driven breaker roll 3 are specifically that each broken gear ring 200 is equipped with five and crushes
Tooth 201, all broken gear rings 200 are divided into three sections, the spaced winding roll shaft 100 of adjacent two sections of broken gear rings 200 in the axial direction
Axis relative rotation angle be 24 °.Also, the length positioned at middle single stage crushing gear ring 200 is less than positioned at each of both sides
The length of the broken gear ring 200 of section.As shown in Fig. 6 to Figure 10, by taking active breaker roll 2 as an example, along the axis direction of roll shaft 100, the
The length L1 of single stage crushing gear ring 200 is 1 meter, and the length L2 of the broken gear ring 200 of second segment is 0.8 meter, and second segment crushing teeth
The direction that circle 200 is rotated on the basis of the broken gear ring 200 of first paragraph along active breaker roll 2 rotates 24 °, the 3rd section of broken gear ring
200 length L3 is 1 meter, and the 3rd section of broken gear ring 200 on the basis of the broken gear ring 200 of second segment along active breaker roll 2
The direction of rotation rotates 24 °.The setting that gear ring 200 is crushed on driven breaker roll 3 is similar with active breaker roll 2.Above-mentioned active
Effective breaking length of breaker roll 2 and driven breaker roll 3 reaches 2.8 meters, is conducive to crushing the material of larger lumpiness, is tested through practice
Card, the combination maximum for using above-mentioned active breaker roll 2 and driven breaker roll 3 can crush a diameter of 1 meter, thickness is for 0.4 meter of fluorine
Gypsum.In other embodiments, the quantity of crushing teeth 201 is alternatively more than two other quantities in each broken gear ring 200, also
All broken gear rings 200 can be divided into two sections or more than four sections along the axis direction of roll shaft 100.
In the present embodiment, the height of crushing teeth 201 is 0.25~0.65 with the diameter ratio of roll shaft 100, is conducive to improving
The breaking capacity of bulk materials.
In the present embodiment, as shown in Figure 3 and Figure 5, the arbitrary neighborhood two of active breaker roll 2 and driven breaker roll 3 is crushed
Comb material tooth 5 is inserted between gear ring 200, comb material tooth 5 is fixed on hopper 1, and is inserted in the broken gear ring of active breaker roll 2
Comb material tooth 5 between 200 is fixed in hopper 1 on the side wall of active breaker roll 2, is inserted in the crushing teeth of driven breaker roll 3
Comb material tooth 5 between circle 200 is fixed in hopper 1 on the side wall of driven breaker roll 3, and comb material tooth 5 will can be bonded at actively broken
Material between broken roller 2 and the broken gear ring 200 of driven breaker roll 3 is removed automatically, prevent material broken gear ring 200 is clung and
Cut off the consequence of production.Further, comb material tooth 5 extends to the underface of roll shaft 100 and is set near the lower end of roll shaft 100,
So during broken production, when roll shaft 100 produces downward flexural deformation, comb expects the lower end phase of tooth 5 and roll shaft 100
Support, play a supporting role, it is to avoid the overbending of roll shaft 100.
In the present embodiment, as shown in Figure 7 to 10, crushing teeth 201 is that the direction inclination rotated to roll shaft 100 is disposed to extend
Tooth plate, the top of tooth plate is in sharp tooth, and the side that tooth plate is located at the rotation direction side of roll shaft 100 is in arcs of recesses, tooth plate position
In the side with the rotation direction opposite side of roll shaft 100 in convex.Crushing teeth 201 uses above-mentioned circular arc side and top
Sharp board-like unique design, is conducive to feeding and biting into pieces material, and crushing teeth 201 is using the cutting of abrasion-proof manganese steel plate with laser
Into its service life is high.
In the present embodiment, as shown in Figure 3 and Figure 4, two transverse blocking-rods 6 set across hopper 1, strut rail are provided with hopper 1
Bar 6 is located at the top of active breaker roll 2 and driven breaker roll 3, and vertical with active breaker roll 2 and driven breaker roll 3, sets horizontal
Pin 6 can not only reduce big block when forklift feeds and cross large impact to active breaker roll 2 and driven breaker roll 3, while also
Play a part of to reinforce the rigidity of hopper 1 and intensity.Meanwhile, vibrator 7 is equiped with hopper 1, can be by the timing of vibrator 7 certainly
Row cleaning sticks to the material on hopper 1, is conducive to being normally carried out for production, especially better in broken wet feed.
In the present embodiment, active breaker roll 2 and driven breaker roll 3 are installed on hopper 1 by self-aligning ball bearing, using tune
Heart ball bearing is installed, be adapted to active breaker roll 2 more long and driven breaker roll 3 there is large curved in broken material and
Produce radial direction and axial force.
In the present embodiment, as shown in figure 1, transmission mechanism to be installed in respectively on active breaker roll 2 and driven breaker roll 3 and
Intermeshing two linkage gears, drive device includes motor 41, belt reduction gearing mechanism 42 and gear reduction box 43, electricity
Machine 41 is connected by belt reduction gearing mechanism 42 with the input shaft of gear reduction box 43, and the output shaft of gear reduction box 43 passes through
Shaft coupling 44 is connected with one end of active breaker roll 2, and linkage gear is located at active breaker roll 2 and driven breaker roll 3 near shaft coupling
One end of device 44, beneficial to the torsion that reduction active breaker roll 2 bears.Above-mentioned belt reduction gearing mechanism 42 is by big belt pulley, small
Belt pulley and V belt are constituted, and gear reduction box 43 can use existing structure, motor 41 to pass through belt reduction gearing mechanism 42
After realizing slowing down for the first time, power is transferred to gear reduction box 43, gear reduction box 43 is significantly slowed down for the second time, then is led to
Crossing shaft coupling 44 drives active breaker roll 2 to rotate, and active breaker roll 2 makes synchronous opposite turn of driven breaker roll 3 by linkage gear
It is dynamic, so as to be crushed to material.
The mechanical force that crushing mechanism is applied can be extruding force, ward off and split power, bending force, shearing force, impulsive force etc..One
As be mostly in machinery two or more mechanical force mixing, and more than disintegrating machine set of the invention several machineries
Power, it is important that extruding force, crushing force, bending force, four kinds of combination applications of mechanical force of shearing force.The disintegrating machine makes full use of big portion
The bending resistance of point material, the characteristics of shearing strength is lower than compression strength, using cloth tooth is intersected, make active breaker roll 2 and driven broken
The uniform force of roller 3, equipment operation are steady, and reducing energy consumption.
Disintegrating machine of the invention is arranged in production line, can use the direct feeding of forklift, then coordinate oblique belt conveyor to go out
Material, is easy to entrucking for sale, makes that whole production line is simpler, more effective, saves more money.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example.To those of ordinary skill in the art, the improvement and change resulting in the case where the technology of the present invention concept thereof is not departed from
Change and also should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of disintegrating machine, including hopper (1), active breaker roll (2), driven breaker roll (3) and actively broken for driving
The drive device that roller (2) is rotated, the active breaker roll (2) and driven breaker roll (3) rotate and are installed in hopper (1) and pass through
Transmission mechanism is connected, and the active breaker roll (2) and driven breaker roll (3) include that roll shaft (100) and multiple are spaced successively
The broken gear ring (200) on roll shaft (100) is connected to, each broken gear ring (200) is equipped with multiple axis around roll shaft (100)
The crushing teeth (201) being evenly arranged, it is characterised in that：All broken gear rings (200) are divided successively along the axis direction of roll shaft (100)
It it is more than two sections, the relative rotation angle of the axis of the spaced winding roll shaft (100) of same section of broken gear ring (200) is zero, adjacent
The axis of the spaced winding roll shaft (100) of two sections of broken gear ring (200) has relative rotation angle；
Along the axis direction of roll shaft, the broken relative rotation angle between gear ring and other each section of broken gear ring of first paragraph is around same
Direction is incremented by paragraph by paragraph；
Length positioned at middle single stage crushing gear ring (200) is less than each section of length of broken gear ring (200) positioned at both sides；
The height of the crushing teeth (201) is 0.25~0.65 with the diameter ratio of roll shaft (100)；
Comb is inserted between the broken gear ring (200) of arbitrary neighborhood two of the active breaker roll (2) and driven breaker roll (3)
Material tooth (5), comb material tooth (5) is fixed on hopper (1)；
Comb material tooth (5) extends to the underface of roll shaft (100) and is set near roll shaft (100)；
The crushing teeth (201) is that the direction rotated to roll shaft (100) inclines the tooth plate being disposed to extend, and the top of the tooth plate is in
Sharp tooth, the side that the tooth plate is located at the rotation direction side of roll shaft (100) is in arcs of recesses, and the tooth plate is located at and roll shaft
(100) side of rotation direction opposite side is in convex；
The transverse blocking-rod (6) set across hopper (1) is provided with the hopper (1), the transverse blocking-rod (6) is positioned at active breaker roll
(2) and driven breaker roll (3) top；Vibrator (7) is equiped with the hopper (1)；
The active breaker roll (2) and driven breaker roll (3) are installed on hopper (1) by self-aligning ball bearing, the driver
Structure is to be installed in respectively on active breaker roll (2) and driven breaker roll (3) and intermeshing two linkage gears；
The drive device includes motor (41), belt reduction gearing mechanism (42) and gear reduction box (43), the motor
(41) it is connected with the input shaft of gear reduction box (43) by belt reduction gearing mechanism (42), the gear reduction box (43)
Output shaft is connected by shaft coupling (44) with one end of the active breaker roll (2), and the linkage gear is located at active breaker roll
(2) and driven breaker roll (3) near shaft coupling (44) one end.
2. disintegrating machine according to claim 1, it is characterised in that：Relative rotation between adjacent two sections of broken gear rings (200)
Gyration θ=360 °/(N1 × N2), wherein N1 are the quantity of crushing teeth (201) in broken gear ring (200), and N2 is broken gear ring
(200) hop count being divided into.
3. disintegrating machine according to claim 2, it is characterised in that：Each broken gear ring (200) is equipped with five crushing teeths
(201), all broken gear rings (200) are divided into three sections, the spaced winding roll shaft of adjacent two sections of broken gear rings (200) in the axial direction
(100) relative rotation angle of axis is 24 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510048345.9A CN104588167B (en) | 2015-01-30 | 2015-01-30 | Disintegrating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510048345.9A CN104588167B (en) | 2015-01-30 | 2015-01-30 | Disintegrating machine |
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| Publication Number | Publication Date |
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| CN104588167A CN104588167A (en) | 2015-05-06 |
| CN104588167B true CN104588167B (en) | 2017-06-16 |
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| CN201510048345.9A Active CN104588167B (en) | 2015-01-30 | 2015-01-30 | Disintegrating machine |
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| CN105642394A (en) * | 2016-03-09 | 2016-06-08 | 旌德县圣裕莹石加工有限公司 | Crusher used for crushing fluorite mineral aggregate |
| CN105642432A (en) * | 2016-03-09 | 2016-06-08 | 旌德县圣裕莹石加工有限公司 | Unit used for machining fluorite mineral aggregate and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2342882Y (en) * | 1998-11-09 | 1999-10-13 | 曲联珠 | Gear ring type coke cutter |
| CN2642398Y (en) * | 2003-03-20 | 2004-09-22 | 张家口煤矿机械有限公司 | Gear-type double-roller crusher |
| CN104069913A (en) * | 2014-07-10 | 2014-10-01 | 太原重工股份有限公司 | Double-geared roller crusher |
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