CN215353837U

CN215353837U - Combined crusher

Info

Publication number: CN215353837U
Application number: CN202120123474.0U
Authority: CN
Inventors: 张健; 邓云凌; 丁永峰; 吴彬彬
Original assignee: Meixinda Xinzhizao Huzhou Technology Co ltd
Current assignee: Meixinda Xinzhizao Huzhou Technology Co ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-12-31
Anticipated expiration: 2031-01-18

Abstract

The utility model discloses a combined crusher, which relates to the field of garbage crushing and comprises a knife box, wherein the knife box is divided into a coarse crushing box and a fine crushing box, jacks are arranged on two side faces of the coarse crushing box, plugs are arranged on two side faces of the fine crushing box, the plugs correspond to the jacks in position, the coarse crushing box and the fine crushing box are fixedly installed together through a third nut, so that the combined crusher is formed, coarse crushing devices are installed on two side faces inside the coarse crushing box, and fine crushing devices are installed on two side faces inside the fine crushing box. According to the combined crusher, the plug, the jack, the third nut, the coarse crushing device and the fine crushing device are matched with each other, the coarse crushing box and the fine crushing box are effectively and fixedly installed together, the combined crusher is formed for crushing materials, the crushing quality and efficiency of the materials are guaranteed, the equipment investment of subsequent processes can be reduced, the investment cost is reduced, the installation space is saved, and the civil engineering cost is reduced.

Description

Combined crusher

Technical Field

The utility model relates to the field of garbage crushing, in particular to a combined crusher.

Background

The crusher is a material crushing device, is widely applied to industries such as metallurgy, chemical industry, mines, cement and the like, and in many industries, a large amount of raw materials and recyclable waste materials need to be processed and treated by the crusher.

However, the existing crusher can not meet the crushing requirement once, and is usually combined in a treatment system for use, materials enter a coarse crusher, the treated materials are screened, conveyed to a fine crusher in a small particle size, and conveyed to the coarse crusher to be crushed again in a large particle size, so that two or more crushers are generally arranged in the system to meet the crushing requirement, the crushing efficiency is reduced, and the input cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

Solves the technical problem

Aiming at the defects of the prior art, the utility model provides a combined crusher.

Technical scheme

A combined crusher comprises a cutter box, wherein the cutter box is divided into a coarse crushing box and a fine crushing box, coarse crushing devices are arranged on two side faces inside the coarse crushing box, the two side faces are opposite in position, the coarse crushing devices perform first heavy crushing on materials, coarse crushing side fixed cutter assemblies are arranged on the front surface and the rear surface inside the coarse crushing box, coarse crushing middle fixed cutter assemblies are fixedly arranged on the two side faces inside the coarse crushing box, the coarse crushing side fixed cutter assemblies and the coarse crushing middle fixed cutter assemblies are respectively matched with a coarse crushing cutter to crush the materials, fine crushing devices are arranged on the two side faces inside the fine crushing box, the two side faces are opposite in position, the fine crushing devices perform second heavy crushing on the materials, fine crushing fixed cutter assemblies are arranged on the front surface and the rear surface inside the fine crushing box, the fine crushing fixed cutter assemblies are matched with the fine crushing cutter to crush the materials, and a material guide strip is fixedly arranged between the coarse crushing fixed cutter assemblies and the fine crushing fixed cutter assemblies, the material guide strip conveys materials;

the rough breaking device comprises a rough breaking cutter roll shaft, a rough breaking speed reducer, a rough breaking motor, a bearing, a rough breaking cutter, a buckle groove, a second buckle groove and a nut, wherein the buckle groove is arranged on one side surface inside the rough breaking box, the bearing is arranged on the other side surface, the second buckle groove is arranged on one surface of the bearing, the buckle groove and the second buckle groove are connected through the rough breaking cutter roll shaft, one end of the rough breaking cutter roll shaft is clamped in the buckle groove, the other end of the rough breaking cutter roll shaft is clamped in the second buckle groove, the buckle groove and the second buckle groove are respectively fixed with the rough breaking cutter roll shaft through the nut, so that the rough breaking cutter roll shaft is convenient to disassemble and replace, the rough breaking cutter roll shaft which is mutually staggered and paired is respectively arranged on the two side surfaces inside the rough breaking box, the rough breaking speed reducer is arranged at one end of the buckle groove, the rough breaking speed reducer is positioned on one side surface of the rough breaking box, the rough breaking motor is arranged on the surface of the rough breaking cutter roll shaft, and the rough breaking cutter roll shaft is provided with the rough breaking cutter, the rough breaking motor provides power, the rough breaking speed reducer rotates to drive the rough breaking cutter roll shaft and the rough breaking cutter to rotate, and the rough breaking cutter breaks materials;

the fine breaking device comprises a fine breaking cutter roll shaft, a fine breaking speed reducer, a fine breaking motor, a second bearing, a fine breaking cutter, a third buckle groove, a fourth buckle groove and a second nut, the third buckle groove is arranged on one side surface inside the fine breaking box, the second bearing is arranged on the other side surface, the fourth buckle groove is arranged on one surface of the second bearing, the third buckle groove and the fourth buckle groove are connected through the fine breaking cutter roll shaft, one end of the fine breaking cutter roll shaft is clamped in the third buckle groove, the other end of the fine breaking cutter roll shaft is clamped in the fourth buckle groove, the third buckle groove and the fourth buckle groove are respectively fixed with the fine breaking cutter roll shaft through the second nut, so that the fine breaking cutter roll shaft is convenient to disassemble and replace, the fine breaking cutter roll shafts which are mutually staggered and paired are respectively arranged on two side surfaces inside the fine breaking box, the fine breaking speed reducer is arranged at one end of the third buckle groove, the fine breaking speed reducer is arranged on one side surface of the fine breaking box, the fine breaking speed reducer is provided with the fine breaking motor, the fine crushing motor provides power, the fine crushing speed reducer rotates to drive the fine crushing roller shaft and the fine crushing cutter to rotate, and the fine crushing cutter crushes materials.

Preferably, jacks are arranged on two side faces of the coarse breaking box, and plugs are arranged on two side faces of the fine breaking box.

Preferably, the plug corresponds to the jack in position and is fixed through a third nut, so that the coarse crushing box and the fine crushing box can be connected conveniently.

Preferably, two rough crushing roller shafts are horizontally arranged on two side surfaces of the rough crushing box, and rough crushing cutters on the two rough crushing roller shafts are meshed in a staggered mode, so that the materials can be crushed firstly.

Preferably, the rough-breaking middle fixed knife assembly is arranged at a distance of one thickness of the rough-breaking knife between the two fixed knives.

Preferably, the rough-breaking-side fixed knife assembly is arranged at a distance of one rough-breaking knife thickness between two fixed knives.

Preferably, two fine crushing roller shafts are horizontally arranged on two side surfaces of the fine crushing box, and fine crushing knives on the two fine crushing roller shafts are meshed in a staggered mode, so that the materials are crushed again conveniently.

Preferably, the fine breaking fixed knife assembly is arranged in a mode that the distance between the two fixed knives is equal to the thickness of the fine breaking knife.

Preferably, the material guiding strip has a certain inclination angle, and the angle is deviated to the fine crushing device, so that the material crushed by the coarse crushing device can be guided to the fine crushing device for secondary crushing.

The utility model has the beneficial effects that:

1. the utility model discloses a combined crusher, which comprises a cutter box, a rough crushing box and a fine crushing box, wherein two side surfaces of the rough crushing box are provided with jacks, two side surfaces of the fine crushing box are provided with plugs, the plugs correspond to the jacks, the rough crushing box and the fine crushing box are fixedly arranged together through a third nut to form the combined crusher, two side surfaces inside the rough crushing box are provided with rough crushing devices, the rough crushing devices perform first heavy crushing on materials, the front surface and the rear surface inside the rough crushing box are provided with rough crushing side fixed cutter assemblies, two side surfaces inside the rough crushing box are fixedly provided with rough crushing middle fixed cutter assemblies, the rough crushing side fixed cutter assemblies and the rough crushing middle fixed cutter assemblies are respectively matched with a rough crushing cutter to crush the materials, two side surfaces inside the fine crushing box are provided with fine crushing devices, the fine crushing devices perform second heavy crushing on the materials, the front surface and the rear surface inside the fine crushing box are provided with fine crushing fixed cutter assemblies, and the fine crushing fixed cutter assemblies are matched with the fine crushing cutter to crush the materials, the double crushing greatly improves the material quality, simultaneously improves the crushing work efficiency, greatly reduces the equipment investment cost, saves the installation space and reduces the civil engineering cost.

2. One side surface of the interior of the rough breaking box is provided with a catching groove, the other side surface is provided with a bearing, one surface of the bearing is provided with a second catching groove, the catching groove and the second catching groove are connected through a rough breaking cutter roll shaft, one end of the rough breaking cutter roll shaft is clamped in the catching groove, the other end of the fine breaking knife roll shaft is connected with the second buckling groove in a clamped mode, the buckling groove and the second buckling groove are fixed with the coarse breaking knife roll shaft through nuts respectively, the coarse breaking knife roll shaft is convenient to detach and replace, a third buckling groove is arranged on one side face of the inside of the fine breaking box, a second bearing is arranged on the other side face of the fine breaking box, a fourth buckling groove is arranged on one surface of the second bearing, the third buckling groove and the fourth buckling groove are connected through the fine breaking knife roll shaft, one end of the fine breaking knife roll shaft is connected with the third buckling groove in a clamped mode, the other end of the fine breaking knife roll shaft is connected with the fourth buckling groove in a clamped mode, the third buckling groove and the fourth buckling groove are fixed with the fine breaking knife roll shaft through second nuts respectively, the fine breaking knife roll shaft is convenient to detach and replace, and the use of the crusher is facilitated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a rough breaking apparatus according to the present invention;

FIG. 3 is a schematic structural view of a fine breaking apparatus according to the present invention;

fig. 4 is a right side view of the present invention.

In the figure: 1. a knife box; 2. a coarse crushing device; 201 rough breaking cutter roll shaft; 202. a coarse crushing speed reducer; 203. roughly breaking the motor; 204. a bearing; 205. roughly breaking a knife; 206. buckling grooves; 207. a second catching groove; 208. a nut; 3. roughly breaking a middle fixed cutter component; 4. roughly breaking a side fixed cutter component; 5. a material guiding strip; 6. a fine breaking device; 601. a fine breaking cutter roll shaft; 602. a fine crushing speed reducer; 603. finely breaking the motor; 604. a second bearing; 605. fine breaking; 606. a third catching groove; 607. a fourth catching groove; 608. A second nut; 7. a fine crushing stationary knife assembly; 8. a jack; 9. a plug; 10. a third nut; 11, roughly crushing the box; 12. and (5) finely breaking the box.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

Referring to the attached drawings, a combined crusher comprises a cutter box 1, the cutter box 1 is divided into a coarse crushing box 11 and a fine crushing box 12, two sides inside the coarse crushing box 11 are provided with coarse crushing devices 2, the two sides are opposite in position, the coarse crushing devices 2 perform first heavy crushing on a material, front and rear surfaces inside the coarse crushing box 11 are provided with coarse crushing side fixed cutter assemblies 4, two sides inside the coarse crushing box 11 are fixedly provided with coarse crushing middle fixed cutter assemblies 3, the coarse crushing side fixed cutter assemblies 4 and the coarse crushing middle fixed cutter assemblies 3 are respectively matched with a coarse crushing cutter 205 to crush the material, two sides inside the fine crushing box 12 are provided with fine crushing devices 6, the two sides are opposite in position, the fine crushing devices 6 perform second heavy crushing on the material, the front surface and the rear surface inside the fine crushing box 12 are provided with a fine crushing cutter assembly 7, the fine crushing fixed cutter assembly 7 is matched with a fine crushing cutter 605 to crush the material, and a material guide strip 5 is fixedly arranged between the coarse crushing side fixed cutter assembly 4 and the fine crushing cutter assembly 7, the material guide strip 5 conveys materials;

the rough breaking device 2 comprises a rough breaking cutter roller shaft 201, a rough breaking speed reducer 202, a rough breaking motor 203, a bearing 204, a rough breaking cutter 205, a buckle groove 206, a second buckle groove 207 and a nut 208, wherein the buckle groove 206 is arranged on one side surface of the interior of the rough breaking box 11, the bearing 204 is arranged on the other side surface of the interior of the rough breaking box 11, the second buckle groove 207 is arranged on one surface of the bearing 204, the buckle groove 206 and the second buckle groove 207 are connected through the rough breaking cutter roller shaft 201, one end of the rough breaking cutter roller shaft 201 is clamped in the buckle groove 206, the other end of the rough breaking cutter roller shaft is clamped in the second buckle groove 207, the buckle groove 206 and the second buckle groove 207 are respectively fixed with the rough breaking cutter roller shaft 201 through the nut 208, so that the rough breaking cutter roller shaft 201 is convenient to detach and replace, the rough breaking cutter roller shafts 201 are respectively arranged on the two side surfaces of the interior of the rough breaking box 11 in a staggered matching mode, the rough breaking speed reducer 202 is arranged at one end of the buckle groove 206, the rough breaking speed reducer 202 is arranged on one side surface of the rough breaking speed reducer 11, the rough breaking speed reducer 202 is provided with the rough breaking motor 203, a rough crushing knife 205 is arranged on the peripheral side surface of the rough crushing knife roller shaft 201, a rough crushing motor 203 provides power, a rough crushing speed reducer 202 rotates to drive the rough crushing knife roller shaft 201 and the rough crushing knife 205 to rotate, and the rough crushing knife 205 crushes materials;

the fine crushing device 6 comprises a fine crushing cutter roll shaft 601, a fine crushing speed reducer 602, a fine crushing motor 603, a second bearing 604, a fine crushing cutter 605, a third buckle groove 606, a fourth buckle groove 607 and a second nut 608, wherein the third buckle groove 606 is arranged on one side surface of the interior of the fine crushing box 12, the second bearing 604 is arranged on the other side surface of the interior of the fine crushing box 12, the fourth buckle groove 607 is arranged on one surface of the second bearing 604, the third buckle groove 606 and the fourth buckle groove 607 are connected through the fine crushing cutter roll shaft 601, one end of the fine crushing cutter roll shaft 601 is clamped in the third buckle groove 606, the other end of the fine crushing cutter roll shaft 601 is clamped in the fourth buckle groove 607, the third buckle groove 606 and the fourth buckle groove 607 are respectively fixed with the fine crushing cutter roll shaft 601 through the second nut 608, so that the fine crushing cutter roll shaft 601 is convenient to disassemble and replace, the fine crushing box 12 is respectively provided with the fine crushing cutter roll shafts 601 which are matched in a staggered mode, one end of the third buckle groove 606 is provided with the fine crushing speed reducer 602, and the fine crushing speed reducer 602 is positioned on one side surface of the fine crushing box, the fine crushing motor 603 is installed on one surface of the fine crushing speed reducer 602, the fine crushing knife 605 is arranged on the peripheral side surface of the fine crushing knife roll shaft 601, the fine crushing motor 603 provides power, the fine crushing speed reducer 602 rotates to drive the fine crushing knife roll shaft 601 and the fine crushing knife 605 to rotate, and the fine crushing knife 605 crushes materials.

Specifically, two side faces of the rough breaking box 11 are provided with jacks 8, and two side faces of the fine breaking box 12 are provided with plugs 9.

Specifically, the plug 9 corresponds to the position of the jack 8 and is fixed by a third nut 10, so that the coarse breaking box 11 and the fine breaking box 12 are conveniently connected.

Specifically, two rough crushing roller shafts 201 are horizontally arranged on two side surfaces of the rough crushing box 11, and the rough crushing cutters 205 on the two rough crushing roller shafts 201 are meshed with each other in a staggered manner, so that the material can be crushed firstly.

Specifically, the rough-breaking middle fixed knife assembly 3 is arranged such that two fixed knives are spaced apart by a distance equal to the thickness of the rough-breaking knife 205.

Specifically, the rough-breaking-side fixed knife assembly 4 is arranged such that two fixed knives are spaced apart by a distance equal to the thickness of the rough-breaking knife 205.

Specifically, two fine crushing roller shafts 601 are horizontally arranged on two side surfaces of the fine crushing box 12, and fine crushing knives 605 on the two fine crushing roller shafts 601 are meshed with each other in a staggered manner, so that the material can be crushed again conveniently.

Specifically, the fine breaking fixed knife assembly 7 is provided with a space of one fine breaking knife 605 thickness between two fixed knives.

Specifically, the material guide strips 5 have a certain inclination angle, and the angle is deviated to the fine crushing device 6, so that the material crushed by the coarse crushing device 2 can be guided to the fine crushing device 6 for secondary crushing.

The working principle is as follows: the two side surfaces of the coarse crushing box 11 are provided with jacks 8, the two side surfaces of the fine crushing box 12 are provided with plugs 9, the plugs 9 correspond to the jacks 8, the coarse crushing box 11 and the fine crushing box 12 are fixedly installed together through a third nut 10 to form a combined crusher, materials are conveyed to a crushing cavity of a coarse crushing cutter roll shaft 201, a coarse crushing motor 203 provides power, a coarse crushing speed reducer 202 rotates to drive the coarse crushing cutter roll shaft 201 and the coarse crushing cutter 205 to rotate, a coarse crushing side fixed cutter assembly 4 and a coarse crushing middle fixed cutter assembly 3 are respectively matched with the coarse crushing cutter 205 to perform first heavy crushing on the materials, middle crushed materials directly enter the fine crushing box 12, side materials are conveyed to the fine crushing box 12 through a material guide strip 5, a fine crushing motor 603 provides power, the fine crushing speed reducer 602 rotates to drive a fine crushing cutter roll shaft 601 and a fine crushing cutter 605 to rotate, the fine crushing fixed cutter assembly 7 is matched with the fine crushing cutter 605 to perform second crushing on the materials, when the rough breaker roller shaft 201 is damaged, the nut 208 is unscrewed to detach the rough breaker roller shaft 201 from the catching groove 206 and the second catching groove 207 for replacement, and when the fine breaker roller shaft 601 is damaged, the second nut 608 is unscrewed to detach the fine breaker roller shaft 601 from the third catching groove 606 and the fourth catching groove 607 for replacement.

The utility model has compact structure, practical function, more uniform and fine crushed materials, greatly improved quality, improved crushing work efficiency, reduced equipment investment cost, saved installation space and reduced civil engineering cost, and solves the problem that two or more crushers need to be installed in a garbage treatment system.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined crusher is characterized in that: the novel high-speed electric knife box comprises a knife box (1), wherein the knife box (1) is divided into a coarse breaking box (11) and a fine breaking box (12), coarse breaking devices (2) are arranged on two inner side faces of the coarse breaking box (11), the two side faces are opposite in position, coarse breaking side fixed knife assemblies (4) are arranged on the front surface and the rear surface of the inner part of the coarse breaking box (11), coarse breaking middle fixed knife assemblies (3) are fixedly arranged on the two inner side faces of the coarse breaking box (11), fine breaking devices (6) are arranged on two inner side faces of the fine breaking box (12), the two side faces are opposite in position, fine breaking fixed knife assemblies (7) are arranged on the front surface and the rear surface of the inner part of the fine breaking box (12), and material guide strips (5) are fixedly arranged between the coarse breaking side fixed knife assemblies (4) and the fine breaking fixed knife assemblies (7);

the rough breaking device (2) comprises a rough breaking cutter roller shaft (201), a rough breaking speed reducer (202), a rough breaking motor (203), a bearing (204), a rough breaking cutter (205), a buckle groove (206), a second buckle groove (207) and a nut (208), wherein the buckle groove (206) is installed on one side surface inside the rough breaking box (11), the bearing (204) is installed on the other side surface, the second buckle groove (207) is installed on one surface of the bearing (204), the buckle groove (206) and the second buckle groove (207) are connected through the rough breaking cutter roller shaft (201), one end of the rough breaking cutter roller shaft (201) is clamped in the buckle groove (206), the other end of the rough breaking cutter roller shaft is clamped in the second buckle groove (207), the buckle groove (206) and the second buckle groove (207) are fixed with the rough breaking cutter roller shaft (201) through the nut (208) respectively, the rough breaking cutter roller shafts (201) which are matched in a staggered mode are installed on two side surfaces inside the rough breaking box (11) respectively, one end of the buckle slot (206) is provided with a rough breaking speed reducer (202), the rough breaking speed reducer (202) is positioned on one side face of the rough breaking box (11), a rough breaking motor (203) is arranged on one surface of the rough breaking speed reducer (202), and rough breaking knives (205) are arranged on the peripheral side faces of the rough breaking knife roll shafts (201);

the fine crushing device (6) comprises a fine crushing cutter roll shaft (601), a fine crushing speed reducer (602), a fine crushing motor (603), a second bearing (604), a fine crushing cutter (605), a third catching groove (606), a fourth catching groove (607) and a second nut (608), wherein the third catching groove (606) is arranged on one side surface inside the fine crushing box (12), the second bearing (604) is arranged on the other side surface, the fourth catching groove (607) is arranged on one surface of the second bearing (604), the third catching groove (606) and the fourth catching groove (607) are connected through the fine crushing cutter roll shaft (601), one end of the fine crushing cutter roll shaft (601) is clamped in the third catching groove (606), the other end of the fine crushing cutter roll shaft is clamped in the fourth catching groove (607), the third catching groove (606) and the fourth catching groove (607) are respectively fixed with the fine crushing cutter roll shaft (601) through the second nut (608), and the fine crushing cutter roll shafts (601) which are in mutual staggered and paired are respectively arranged on two side surfaces inside the fine crushing box (12), thin broken speed reducer (602) is installed to third catching groove (606) one end, thin broken speed reducer (602) is located thin broken case one side, thin broken motor (603) is installed to thin broken speed reducer (602) one surface, thin broken sword (605) are provided with to the side around thin broken sword roller (601).

2. A combined crusher as claimed in claim 1, characterised in that: two side faces of the rough breaking box (11) are provided with jacks (8), and two side faces of the fine breaking box (12) are provided with plugs (9).

3. A combined crusher as claimed in claim 2, characterised in that: the plug (9) corresponds to the jack (8) in position and is fixed through a third nut (10).

4. A combined crusher as claimed in claim 1, characterised in that: two rough crushing cutter roll shafts (201) are horizontally arranged on two side faces of the rough crushing box (11), and rough crushing cutters (205) on the two rough crushing cutter roll shafts (201) are meshed in a staggered mode.

5. A combined crusher as claimed in claim 1, characterised in that: the coarse crushing middle fixed knife assembly (3) is arranged in a manner that the middle of two fixed knives is spaced by the thickness of one coarse crushing knife (205).

6. A combined crusher as claimed in claim 1, characterised in that: the coarse crushing side fixed knife assembly (4) is arranged in a mode that the middle of two fixed knives is spaced by the thickness of one coarse crushing knife (205).

7. A combined crusher as claimed in claim 1, characterised in that: two fine crushing cutter roll shafts (601) are horizontally arranged on two side surfaces of the fine crushing box (12), and fine crushing cutters (605) on the two fine crushing cutter roll shafts (601) are meshed in a staggered mode.

8. A combined crusher as claimed in claim 1, characterised in that: the thin breaking fixed knife component (7) is arranged in a way that the middle of two fixed knives is spaced by the thickness of one thin breaking knife (605).

9. A combined crusher as claimed in claim 1, characterised in that: the material guiding strip (5) has a certain inclination angle, and the angle is deviated to the fine breaking device (6).