CN114289123A

CN114289123A - Crusher main machine convenient to overhaul

Info

Publication number: CN114289123A
Application number: CN202111458190.8A
Authority: CN
Inventors: 胡品龙; 卢剑锋; 陈权武; 黄艰生; 李飚
Original assignee: Jiangsu Huahong Technology Co Ltd
Current assignee: Jiangsu Huahong Technology Co Ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-04-08
Anticipated expiration: 2041-12-02
Also published as: CN114289123B

Abstract

The invention relates to a crusher main machine convenient to overhaul, which comprises a frame, a crushing box chamber, a main shaft roller and a screen; the crushing box chamber is divided into an upper box body and a lower box body; the lower box body is fixed in the rack; a box body rotating shaft is arranged at one end of the upper box body, the box body rotating shaft is connected with the rack or the lower box body, and the upper box body can turn around the box body rotating shaft relative to the lower box body; the main shaft roller comprises a main shaft, a main shaft end plate, a plurality of partition plates and a plurality of hammers; the hammerheads are arranged at intervals with the partition plate, and a plurality of hammerheads in the same direction are connected through a hammerhead pin shaft and penetrate through the adjacent partition plate or the main shaft end plate; two ends of the clapboard are also provided with sheaths; the sheath is adjacent to the hammer head. The invention shortens the maintenance preparation time, is more beneficial to daily maintenance and improves the service life of the equipment; and the bulk density of the materials can be quickly adjusted, and the production requirement can be better met.

Description

Crusher main machine convenient to overhaul

Technical Field

The invention relates to a crusher main machine, in particular to a crusher main machine which can conveniently overhaul and replace all easily damaged parts, and belongs to the technical field of mechanical equipment.

Background

In the field of waste metal recovery, a crusher shown in fig. 1 and 2 is needed, a hammer head is driven by a main shaft roller, massive metal is beaten in a high-speed rotating mode to be crushed into small pieces, and then the small pieces of metal materials meeting the size requirement are discharged through a lower screen; the applicant researches in the field for many years, and the related structures can refer to a scrap steel crusher with Chinese patent publication No. CN101530822A, a scrap steel crusher main machine with Chinese patent publication No. CN101549311A and a scrap automobile special crusher with Chinese patent publication No. CN 202823482U; the related accessories can also refer to a feeder with hydraulic double rollers of a main machine of the scrap steel crusher with Chinese patent publication No. CN201446003U, a main shaft transmission device of the scrap steel crusher with a hydraulic coupler with Chinese patent publication No. CN202045000U, and the like.

Because the main machine of the crusher is of a mechanical structure, vibration and impact force can be continuously generated in the working process, and some parts in the crusher, such as a main shaft roller, a hammer head, a screen and the like, are required to be overhauled and replaced frequently; even when the material, the size of broken material take place to switch, also need adjust some parts to what change satisfies the production needs.

But present breaker host computer does not consider when the design and overhauls the convenience, need carry out the huge whole dismantlement of work load to whole machine when leading to overhauing, just can overhaul, wastes time and energy.

In view of the above disadvantages, it is necessary to optimize and improve the structure of the main frame of the crusher, so as to facilitate the maintenance and adjustment.

Disclosure of Invention

The invention aims to provide a crusher main machine convenient to overhaul so as to improve the overhaul and replacement of various easily damaged parts of the crusher main machine, timely adjust various parts according to production requirements and better meet the production requirements.

In order to achieve the aim, the invention provides a crusher main machine convenient to overhaul, which comprises a frame, a crushing box chamber, a main shaft roller and a screen; a crushing box chamber is arranged on the rack, a main shaft roller is arranged in the crushing box chamber, a screen is arranged on the wall surface of the crushing box chamber, and the main shaft roller and the screen form a crushing space;

the crushing box is characterized in that the crushing box chamber is divided into an upper box body and a lower box body; the lower box body is fixed in the rack;

a box body rotating shaft is arranged at one end of the upper box body, the box body rotating shaft is connected with the rack or the lower box body, and the upper box body can turn around the box body rotating shaft relative to the lower box body;

the main shaft roller comprises a main shaft, a main shaft end plate, a plurality of partition plates and a plurality of hammers; the two ends of the main shaft are provided with main shaft end plates, and a plurality of partition plates are arranged in the main shaft end plates; the partition plates are long strip-shaped plates, and 2 adjacent partition plates are arranged in a crisscross manner;

hammers are arranged between the adjacent clapboards in the same installation direction and between the main shaft end plate and the next adjacent clapboard; the end part of the hammer head exceeds the end parts of the partition plate and the main shaft end plate;

the hammer heads and the partition plates are installed at intervals, and a plurality of hammer heads in the same direction are connected through a hammer head pin shaft and penetrate through the adjacent partition plates or the main shaft end plates.

As a further improvement of the invention, the upper box body is driven to turn over by a box body driving element; the box body driving element is a linear driving element; one end of the box body driving element is hinged to the upper box body, and the other end of the box body driving element is hinged to the rack or the lower box body.

As a further improvement of the present invention, the main shaft roller is mounted at a joint of the upper case and the lower case;

bearing seats are arranged at two ends of the main shaft roller and are arranged on a main shaft mounting seat through detachable fasteners; the main shaft mounting seat is fixed on the rack or the lower box body;

the upper part of the bearing seat is provided with a turnover support lug;

connecting seats are arranged on two sides of the upper box body, and connecting lugs are arranged on the connecting seats;

the overturning lug is overlapped with the connecting lug;

the connecting support lug and the overturning support lug are internally provided with detachable connecting fasteners.

As a further improvement of the invention, the lower part of the screen is provided with an independent and replaceable lower screen which is arranged on the movable screen frame;

the lower screen and the movable screen frame can move together relative to the frame and the crushing box chamber;

and the lower screen is positioned outside the frame after moving.

Further, a mobile driving device is arranged between the mobile screen frame and the rack;

more than 2 mobile driving devices are arranged;

the frame reaches the both sides of removing the screen frame all are equipped with remove drive arrangement.

As a further improvement of the invention, two ends of the clapboard are also provided with sheaths; the sheath is adjacent to the hammer head;

the sheath is U-shaped in cross section and is arranged at the end part of the long end of the partition plate through a sheath pin shaft.

Furthermore, two sides of the wall surface of the sheath are provided with taper holes or step holes, and the end part of the sheath pin shaft is clamped into the taper holes or the step holes;

the sheath pin shaft is axially split; two sides of the sheath are respectively provided with a part of partition sheath pin shafts;

and a fastener is arranged in the sheath pin shaft, and the fastener and the sheath pin shaft which are separated clamp two side wall surfaces of the sheath.

Still further, the sheath is disposed at a front side of the movement direction of the partition plate in the rotation direction of the main shaft; and a material crushing area is arranged between the sheath and the adjacent hammer heads.

As a further improvement of the invention, the main shaft roller horizontally deviates towards the direction of the screen body, and a horizontal deviation is arranged between the rotation center of the main shaft roller and the geometric center of the cambered surface at the lower part of the screen;

or the main shaft roller vertically and downwardly offsets towards the direction of the screen body, and a vertical offset is arranged between the rotation center of the main shaft roller and the geometric center of the cambered surface at the lower part of the screen;

the hammer head rotating circle of the main shaft roller and the material channel between the screens form a spiral shape with a wide front end inlet and a narrow rear end outlet.

Furthermore, an adjustable spindle roller mounting height adjusting gasket is arranged between the bearing seats at the two ends of the spindle roller and the spindle mounting seat.

Aiming at the conventional maintenance requirements of a crusher main machine, a special openable box body structure and a follow-up turnover type main shaft roller structure are arranged for the maintenance of the screen, so that the convenience of maintaining the whole screen is greatly improved; meanwhile, the drawing type lower screen is independently arranged for the easily worn lower screen, so that the maintenance convenience of the lower screen is further improved; the invention also aims at the maintenance requirement of the spindle roller, and aims at a plurality of wearing parts, a detachable structure design is adopted, so that the maintenance is convenient, and particularly, the sheath on the clapboard is combined with a follow-up turnover type spindle roller structure, so that the spindle roller can be turned out of the box body and can be quickly replaced; after a series of improvement designs are adopted, the maintenance convenience of the main machine of the crusher is greatly improved, the maintenance preparation time is shortened, the daily maintenance is more favorably carried out, and the service life of the equipment is prolonged.

On the basis of the improvement, the structure is improved for improving the bulk density of the material, and the bulk density of the material can be quickly adjusted by depending on the improved structure, so that the production requirement can be better met.

Drawings

Fig. 1 is a schematic view 1 of the overall structure of the crusher;

FIG. 2 is a schematic view of the overall structure of the crusher 2;

FIG. 3 is a schematic structural diagram of a main frame of the crusher of the present invention;

FIG. 4 is a schematic structural view of a bearing seat for mounting a spindle according to the present invention;

FIG. 5 is a schematic view of a bearing seat mounting structure of the spindle according to the present invention;

FIG. 6 is a schematic diagram of the internal structure of the main frame of the crusher of the present invention;

FIG. 7 is a schematic view of the overall structure of the outer side of the main frame of the crusher of the present invention;

FIG. 8 is a partial schematic view of a host of the crusher of the present invention;

FIG. 9 is a schematic view of the screen mounting of the host of the crusher of the present invention;

FIG. 10 is a schematic diagram of a screen change in a host of the crusher of the present invention;

FIG. 11 is a schematic view showing the overall structure of the main shaft roll of the present invention;

FIG. 12 is a cross-sectional view of the main body of the spindle roll of the present invention;

FIG. 13 is an enlarged partial schematic view of the spindle roll of the present invention;

FIG. 14 is a schematic view of a fixing structure of a protective cover of a spindle roll according to the present invention 1;

FIG. 15 is a schematic view of the fixing structure of the protective sleeve of the spindle roller of the present invention, shown in FIG. 2;

FIG. 16 is a schematic view showing the distribution of hammers of the main shaft roll according to the present invention;

FIG. 17 is an offset mounting schematic of the spindle roll of the present invention;

reference numerals: a frame 1; a crushing chamber 2; a main shaft roll 3; a screen 4;

a main shaft mounting base 11; an upper case 21 and a lower case 22; a box body rotating shaft 23; a case drive element 24;

a connecting seat 211 connected with the support lug 212; an upper locking hole 251 and a lower locking hole 252;

a main shaft 301, a bearing seat 302 and a turning lug 3021; a main shaft connecting flange 303;

a main shaft end plate 304, a partition plate 305, a partition plate key 306 and a partition plate pin shaft 307;

the device comprises a sheath 308, a hammer 309, a hammer pin 310, a pin shaft sleeve 311 and a pin shaft end cover 312;

an end plate sheath pin 313, a separator sheath pin 314, and a sheath pin fastener 315;

the lower screen 41, the moving screen frame 42, the moving driving device 43 and the locking device 44.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 3 and 6, the main frame of the crusher comprises a frame 1, a crushing box chamber 2 is arranged on the frame 1, a spindle roller 3 is installed in the crushing box chamber 2, and a screen 4 is arranged on the wall surface of the crushing box chamber 2; the main body part of the main shaft roller 3 rotates in the crushing box chamber 2, the hammer head is matched with the wall surface of the crushing box chamber 2, particularly matched with the screen 4, the material to be crushed is knocked and crushed, and the crushed small-particle material is discharged through the gap of the screen 4.

First, maintenance of screen mesh

The screen is used as a wall surface for crushing and a material discharge channel, and is subjected to impact and material extrusion for a long time, so that crushing and channel blockage are easily caused, and frequent maintenance is required. Aiming at the maintenance of the screen 4, the invention makes the following improvements:

1. openable box

The crushing box chamber 2 adopts a split structure design and is respectively provided with an upper box body 21 and a lower box body 22; the lower box body 22 is fixed in the frame 1; one end of the upper box body 21 is provided with a box body rotating shaft 23, and the box body rotating shaft 23 is connected with the rack 1 or the lower box body 22, that is, the upper box body 21 can turn around the box body rotating shaft 23 relative to the lower box body 22.

A box body driving element 24 is arranged between the upper box body 21 and the lower box body 22, and in the embodiment, the box body driving element 24 is a hydraulic cylinder; and starting the box body driving element 24, the upper box body 21 can be driven to turn around the box body rotating shaft 23.

By adopting the design, the upper box body 21 can be opened without hoisting.

Still further, in order to ensure the reliability in the flip-open state, an upper locking hole 251 is provided in the upper case 21; correspondingly, a lower locking hole 252 is formed in the lower box body 22; when the upper case 21 is completely opened, the upper locking hole 251 and the lower locking hole 252 are overlapped, and then a locking pin is inserted into the upper locking hole 251 and the lower locking hole 252, so that mechanical fixation can be realized, and accidents caused by failure of the case driving element 24 can be prevented.

2. Follow-up turnover type spindle roller

The spindle roller 3 is fixed on the spindle mounting seat 11 of the frame 1 through bearing seats 302 on two sides; the spindle roller 3 is mounted at the joint of the upper box 21 and the lower box 22; in order to facilitate the removal of the spindle roller 3 from the lower box 22 and thus the maintenance of the screen 4 located below, a turning lug 3021 (shown in fig. 4) is provided on the upper portion of the bearing housing 302, and connecting sockets 211 are provided on both sides of the upper box 21, and a connecting lug 212 corresponding to the turning lug 3021 is provided on each connecting socket 211; when the maintenance is needed, the connecting fastener between the bearing seat 302 and the spindle mounting seat 11 is loosened, meanwhile, the connecting fastener (pin shaft or screw) is arranged in the connecting lug 212 and the turning lug 3021, that is, the spindle roller 3 and the bearing seat 302 are temporarily connected and fixed with the upper box body 21, at this time, the box body driving element 24 is started, so that the spindle roller 3 can be driven to turn over along with the upper box body 21, the hoisting of the spindle roller 3 is omitted, the maintenance and replacement of the screen 4 positioned below can be realized, the preparation and recovery time for maintenance and replacement is greatly shortened, and the operation efficiency is improved.

3. Pull type lower screen mesh

An orthogonal coordinate system is established by the rotation center of the crushing box chamber 2 shown in fig. 6, and the lower screen 41 positioned at the lower left part of the third quadrant is most easily extruded and blocked as a main material inlet channel in daily life, so the maintenance of the part of the lower screen 41 is often required, if the lower screen 41 is implemented by adopting the openable box body and the follow-up turnover type spindle roller each time, the maintenance is still slightly troublesome, so the design of the pull-type lower screen is adopted, the lower screen 41 which is frequently maintained is arranged on the movable screen frame 42, the lower screen 41 can move relative to the frame 1 and the crushing box chamber 2 together with the movable screen frame 42, particularly the lower screen 41 can be moved out of the crushing box chamber 2 and even out of the frame 1, and the convenience is brought under the premise of not disassembling the crushing box chamber 2 and the spindle roller 3, namely, the lower screen 41 is overhauled and replaced, and the equipment overhaul and adjustment preparation time caused by material blockage or production condition change and the like is greatly prolonged.

Further, as shown in fig. 7-10, a moving driving device 43 is installed between the moving screen frame 42 and the frame 1; preferably, at least 2 of the moving driving devices 43 are provided, and are respectively installed on both sides of the frame 1 and the moving screen frame 42 as shown in the figure; the movement driving device 43 is a linear driving device, and is horizontally installed, and the movable screen frame 42 can be horizontally moved with respect to the frame 1 by the driving of the movement driving device 43.

The movement driving device 43 is preferably a hydraulic cylinder, one end of which is fixed to the frame 1 and the other end of which is fixed to the movable screen frame 42, and the hydraulic cylinder drives the movable screen frame 42 to move horizontally with respect to the frame 1.

A bracket is arranged at the bottom of the frame 1; the bracket supports the horizontal movement of the movable screen frame 42, and particularly, the movable screen frame 42 can be kept at a horizontal height after being conveniently moved out; the bracket extends outwardly beyond the housing 1.

Further, the inboard of frame 1 is equipped with horizontal slide rail, and is corresponding be equipped with the slide on the removal screen frame 42, slide rail and slide cooperation provide suitable horizontal migration direction on the one hand, and on the other hand avoids removal screen frame 42 is relative frame 1 takes place except that the outside other directions displacement of water square direction.

In order to prevent the lower screen 41 from affecting the crushing quality along with the displacement of the movable screen frame 42 during the operation of the crusher main body which is convenient for replacing the screen, a locking device 44 is further arranged on the frame 1 and the movable screen frame 42, and the locking device 44 can utilize the upper locking hole 251 or the lower locking hole 252 to install a special fastening mechanism; the number of the locking devices 44 is more than 2, and the locking devices are respectively arranged on two sides of the rack 1 and the movable screen frame 42; when the upper case 21 needs to be turned over and opened, the locking device 44 is removed, so that the locking function of the upper locking hole 251 and the lower locking hole 252 to the position of the upper case 21 can be quickly restored.

The replacing steps of the lower screen 41 of the crusher main frame convenient for replacing the screen are as follows, when the lower screen 41 needs to be replaced, firstly, the locking device 44 is unlocked, the moving driving device 43 is started, the moving screen frame 42 and the lower screen 41 therein are horizontally moved relative to the frame 1 and are moved out of the crushing box chamber 2, and finally, the lower screen 41 is completely moved out of the frame 1, and at the moment, the lower screen 41 can be conveniently hoisted and replaced; after the replacement is finished, the moving driving device 43 is reversely started to move the moving screen frame 42 together with the replaced lower screen 41 into the frame 1, finally the lower screen 41 reaches a designated position in the crushing box chamber 2 to form a complete crushing box wall together with other components, and the locking device 44 is started to lock the moving screen frame 42 in the frame 1 to prevent the lower screen 41 from being accidentally displaced in the working process.

After adopting above-mentioned design, the maintenance of screen cloth 4, change, adjustment efficiency have obtained very big improvement, and the security has also obtained the assurance.

Improved structure of main shaft roller

The main shaft roller 3 is a core component of the crushing operation, the design of the main shaft roller seriously affects the crushing quality and the crushing effect, and the main shaft roller bears the action of alternate impact force for a long time in the operation process and is easy to wear, so the main shaft roller needs to be frequently overhauled and replaced, so the structure of the main shaft roller 3 is improved, as shown in fig. 11-12, the main shaft roller comprises a main shaft 301, two ends of the main shaft 301 are arranged on the frame 1 through bearing seats 302, and two ends of the main shaft 301 are connected with a driving motor through a main shaft connecting flange 303. The part of the main shaft roller 3 in the crushing box chamber 2 is a crushing working main body, main shaft end plates 304 are arranged at two ends of the main shaft 301 in the crushing box chamber 2, and a plurality of partition plates 305 are arranged between the main shaft end plates 304 at the two ends; the diaphragm 305 is connected to the main shaft 301 by a diaphragm key 306, so that the diaphragm 305 rotates along with the main shaft 301.

All the partition plates 305 and the main shaft end plate 304 are further connected together by partition plate pins 307, as shown in fig. 16, the partition plates 305 are long thick plates, and 2 adjacent partition plates 305 are arranged in a crisscross manner.

At both ends of the partition 305, sheaths 308 are installed; the sheath 308 is made of a wear resistant material and protects the ends of the baffle 305.

Between the partition boards 305 in the same adjacent installation direction, hammer heads 309 are installed, and the hammer heads 309 rotate along with the spindle rollers 3 and are matched with the screen 4 to crush the materials. The hammer 309 is made of a wear-resistant material.

The hammer heads 309 are arranged between every two adjacent partition plates 305 to form butterfly installation, so that the striking area of the hammer heads 309 in an effective crushing area is completely covered, and no crushing dead angle exists.

The hammers 309 are installed at intervals with the partition plates 305, and are installed by hammer pins 310, and the hammers 309 are installed between 2 adjacent partition plates 305, or the hammers 309 at the end are installed between the partition plates 305 and the main shaft end plate 304.

Further, a pin shaft sleeve 311 is arranged between the partition 305 (and the spindle end plate 304) and the hammer pin shaft 310, and is used for protecting a mounting hole in the partition 305; when the inner bore is worn due to long-term operation, only the pin shaft sleeve 311 needs to be replaced, and the whole partition plate 305 does not need to be replaced or reamed again for use.

The hammer pin shaft 310 is preferably integrally installed between the two main shaft end plates 304, the two ends of the hammer pin shaft 310 are provided with pin shaft end covers 312, and the pin shaft end covers 312 are fixed on the main shaft end plates 304 through fasteners and limit the hammer pin shaft 310.

The sheath 308 is U-shaped in cross section, and the sheath 308 is mounted through a sheath pin. Two sides of the U-shaped wall surface of the sheath 308 are provided with taper holes or step holes, the end part of the sheath pin shaft is clamped into the taper holes or the step holes, and the sheath pin shaft is tightened through a fastener to drive the two U-shaped side walls of the sheath 308 to contract inwards and clamp.

As shown in fig. 14, for the sheath 308 mounted on the partition 305 adjacent to the main shaft end plate 304, an end plate sheath pin 313 is mounted on one side of the main shaft end plate 304, a partition sheath pin 314 is mounted on one side of the partition 305, and the end plate sheath pin 313 and the partition sheath pin 314 are tightened by a sheath pin fastener 315 to clamp two side walls of the U shape of the sheath 308 and fix the sheath on the main shaft end plate 304.

As shown in fig. 15, for the sheath 308 mounted on the middle partition 305, the sheath 308 is sleeved on the partition 305, partition sheath pins 314 are respectively mounted on two sides of the sheath 308, and fastening members 315 are tightened to clamp two "U" -shaped sidewalls of the sheath 308.

The sheath 308 is also sleeved on the hammer pin 310.

As shown in fig. 11 and 16, the sheath 308 does not completely cover the end of the partition 305, but is disposed mainly on the front side of the movement direction of the partition 305 in the rotation direction of the spindle roller 3; when the spindle roller 3 rotates, the sheath 308 is arranged on the front side of the partition 305 in the moving direction, and the sheath 308 is in contact with the material to protect the partition 305; the sheath 308 is also coupled to the hammer 309 to crush the material.

The main shaft roller 3 is designed into parts which are easy to wear and need to be overhauled and replaced frequently, and can be independently disassembled and replaced according to the working characteristics of the crusher, so that the overhauling and maintaining efficiency is greatly improved, the integral service life of the equipment is prolonged, and the service life of the whole machine is prolonged through effective maintenance and replacement.

And the mounting mode of the hammer 309 is improved, so that the materials are thrown to the lining plate to rebound under the action of centrifugal force after being crushed from the gap of the main shaft, and the bulk density of the materials is higher.

Three, the main shaft roller is installed partially

The bulk density of the crushed material is an important assessment index of the crusher, and the bulk density of the material can be improved through the structural improvement on the main shaft roller 3. At the same time, it is necessary to adjust the mounting position of the main shaft roll 3 in order to further increase the bulk density.

The further improvement of the invention is that the installation position of the main shaft roller 3 is eccentrically installed; specifically, as shown in fig. 17, the rotation center of the spindle roller 3 is a, and after the hammer 309 provided thereon rotates, a circular working area is formed, and the outer side thereof is shown by a chain line; the lower area of the screen 4 is arc-shaped, and the geometric center of the arc surface is B; when the spindle roller 3 is installed, first, a space formed after the hammer 309 rotates is ensured so as not to interfere with the screen 4; further, the spindle roller 3 is installed in an offset manner relative to the arc surface of the screen 4, that is, the rotation center a does not overlap with the geometric center B of the arc surface of the screen 4; particularly, the main shaft roller 3 to 4 main part directions horizontal migration of screen cloth, rotation center A with be equipped with horizontal offset l between 4 cambered surface geometric centre B of screen cloth to make the material passageway form the spiral that the front end entrance is wide, and the rear end export is narrow, produce the circumference extrusion force to the material when beating the material like this, further improve the bulk density of material. Still further, the spindle roller 3 may also be vertically offset downward toward the main body of the screen 4, and a vertical offset h is provided between the rotation center a and the geometric center B of the arc surface of the screen 4, so that a similar spiral channel may be formed to increase the bulk density. Of course, the horizontal offset l and the vertical offset h can exist simultaneously according to design requirements.

Further, the structure of the servo turnover type spindle roller can be utilized, that is, the mounting height between the bearing seat 302 and the spindle mounting seat 11 can be conveniently adjusted, so that the bearing seat 302 can be temporarily lifted away from the spindle mounting seat 11 only by temporarily connecting the bearing seat 302 with the upper box body 21, and at the moment, the height of the bearing seat 302 can be adjusted by increasing or reducing adjusting gaskets between the bearing seat 302 and the upper box body, so that the center height of the spindle roller 3 relative to the screen 4 is adjusted, and the vertical offset h can be quickly adjusted; therefore, the mounting height of the spindle roller 3 can be quickly adjusted according to different material types and different bulk density requirements of target products, so that the production requirements can be better met.

While the preferred embodiments of the present invention have been described in detail, it is not intended that the invention be limited to the exact forms disclosed, and that various equivalent modifications or substitutions may be made by those skilled in the art without departing from the spirit of the invention and the scope of the appended claims.

Claims

1. The crusher main machine convenient to overhaul comprises a frame, a crushing box chamber, a main shaft roller and a screen; a crushing box chamber is arranged on the rack, a main shaft roller is arranged in the crushing box chamber, a screen is arranged on the wall surface of the crushing box chamber, and the main shaft roller and the screen form a crushing space;

2. The main frame of a crusher convenient to overhaul as claimed in claim 1, wherein the upper box body is driven to turn over by a box body driving element; the box body driving element is a linear driving element; one end of the box body driving element is hinged to the upper box body, and the other end of the box body driving element is hinged to the rack or the lower box body.

3. The main frame of the crusher convenient to overhaul as claimed in claim 1, wherein the main shaft roller is installed at the joint of the upper box body and the lower box body;

the upper part of the bearing seat is provided with a turnover support lug;

the overturning lug is overlapped with the connecting lug;

4. The main frame of the crusher convenient for overhaul as claimed in claim 1, wherein the lower part of the screen is provided with a lower screen which is independently replaceable, and the lower screen is arranged on a movable screen frame;

and the lower screen is positioned outside the frame after moving.

5. The main frame of the crusher convenient for overhaul as claimed in claim 4, wherein a moving driving device is arranged between the moving screen frame and the frame;

more than 2 mobile driving devices are arranged;

6. The main frame of crusher convenient for overhaul as claimed in claim 1, wherein, two ends of the clapboard are also provided with a sheath; the sheath is adjacent to the hammer head;

7. The crusher main unit convenient for overhaul according to claim 6, wherein two sides of the wall surface of the sheath are provided with taper holes or step holes, and the end part of the sheath pin shaft is clamped into the taper holes or the step holes;

8. The crusher main unit convenient to overhaul according to claim 6, wherein the sheath is provided on a front side in a moving direction of the partition plate in a rotating direction of the main shaft; and a material crushing area is arranged between the sheath and the adjacent hammer heads.

9. The main frame of the crusher convenient for overhaul as claimed in claim 1, wherein the main shaft roll is horizontally offset towards the main body of the screen, and a horizontal offset is provided between the rotation center of the main shaft roll and the geometric center of the cambered surface at the lower part of the screen;

10. The main frame of crusher convenient for overhaul as claimed in claim 9 wherein adjustable main shaft roller mounting height adjusting shims are provided between the bearing blocks at both ends of the main shaft roller and the main shaft mounting seats thereof.