CN108160272B - Gradually broken formula colliery is wheeled breaker for pit - Google Patents
Gradually broken formula colliery is wheeled breaker for pit Download PDFInfo
- Publication number
- CN108160272B CN108160272B CN201810062090.5A CN201810062090A CN108160272B CN 108160272 B CN108160272 B CN 108160272B CN 201810062090 A CN201810062090 A CN 201810062090A CN 108160272 B CN108160272 B CN 108160272B
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- crushing
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- crushing shaft
- cutter
- broken
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- 239000003245 coal Substances 0.000 claims description 41
- 230000000750 progressive effect Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 230000008859 change Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 239000000428 dust Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
- B02C18/145—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/18—Knives; Mountings thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/24—Drives
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The utility model provides a gradually broken formula colliery is wheeled breaker in pit, this breaker includes broken groove, input groove, entry frame, exit frame, broken axle group includes broken axle, broken sword toothholder, broken sword tooth, and each broken sword toothholder includes left sword toothholder, right sword toothholder, and each broken sword toothholder comprises left sword toothholder, right sword toothholder that the symmetry set up, and a plurality of broken sword toothholders are evenly arranged along the radial direction 360 of broken axle, have guaranteed the dynamic balance of broken axle group operation in-process; the crushing cutter teeth on the crushing shaft group change the traditional cross and straight arrangement modes, and the gradual change spiral arrangement mode is adopted, so that the crushing process is changed into gradual change crushing from interval crushing, the stress state of the crushing shaft group is improved, the simultaneous stress of multiple cutter teeth of the crushing shaft group can be effectively reduced, the problems of large recoil force and large vibration of the crushing shaft are solved, the excessive crushing problem of massive materials in the crushing process is solved, the loading power of the crusher is reduced, the risk of accidents due to blockage is increased, and the crushing efficiency is improved.
Description
Technical Field
The invention relates to the technical field of a wheel crusher for underground coal mines, in particular to a gradually-broken wheel crusher for underground coal mines.
Background
The crusher for the underground mine gateway is an important device for crushing underground coal of a coal mine, a crushing shaft group is one of key components of the crusher, the crushing shaft group is driven by a motor and a speed reducer to realize the crushing function of massive coal, and during normal operation, cutter teeth on the crushing shaft group collide with coal blocks at a high impact speed, so that the aim of crushing the coal blocks is fulfilled.
At present, crushing shaft group cutter teeth of a crusher for underground mine gateway in China are in two arrangement modes of one cutter tooth and a cross cutter tooth, a plurality of cutter teeth are stressed simultaneously, and massive coal in a section is stressed and crushed simultaneously. When the crushing shaft group with the two cutter tooth arrangement forms impact coal blocks, the problems of excessive crushing of massive coal, excessive recoil force applied to the crushing shaft and the like are caused due to the simultaneous impact of a plurality of cutter teeth, so that the problems of oversized total assembly machine of the crusher, easy blockage and the like are caused, the production efficiency of an underground working face is seriously influenced, and benefit loss is brought to coal mine enterprises.
Disclosure of Invention
In view of the foregoing, there is a need for a progressive wheel crusher for coal mine that can change the state of the cutter teeth, reduce the recoil force to which the crushing shaft is subjected, has low total power, and is less prone to clogging.
A gradual-breaking type wheel crusher for underground coal mine comprises a crushing groove, an input groove, an inlet frame, an outlet frame, a crushing shaft group and a power part; an input groove, an inlet frame and an outlet frame which are connected in sequence are arranged above the crushing groove, an input port of the crushing groove is used for being connected with a middle groove of a land section of the transfer conveyor so that coal blocks conveyed by the transfer conveyor enter the crushing groove, and two ends of the crushing shaft group are rotatably arranged on two side walls between the inlet frame and the outlet frame so as to output the crushed coal blocks from an output port of the crushing groove after the crushed coal blocks enter the crushing groove; the output end of the power part is rotationally connected with the crushing shaft group so as to drive the crushing shaft group to rotate around the axis of the crushing shaft group; the crushing shaft group comprises a crushing shaft and a plurality of crushing units arranged along the axial direction of the crushing shaft, each crushing unit comprises a crushing cutter tooth holder and crushing cutter teeth, each crushing cutter tooth holder comprises a left cutter tooth holder and a right cutter tooth holder, the left cutter tooth holder and the right cutter tooth holders are symmetrically arranged in the radial direction of the crushing shaft by taking the crushing shaft as the center, the crushing cutter teeth are arranged at the end parts of the left cutter tooth holder and the right cutter tooth holder, the crushing cutter tooth holders are sequentially arranged along the axial direction of the crushing shaft, the crushing cutter tooth holders sequentially rotate clockwise by a certain angle by taking the crushing shaft as the axis, so as to form gradual spiral arrangement around the wall of the crushing shaft in the radial direction of the crushing shaft, two adjacent crushing cutter tooth holders are different by the same angle in the radial direction of the crushing shaft, and the two crushing cutter tooth holders at the two ends of the crushing shaft are different by 180 degrees in the radial direction of the crushing shaft.
Preferably, the number of the crushing cutter tooth seats is 5, and the radial direction of the crushing shaft is different from the radial direction of the adjacent two crushing cutter tooth seats by 36 degrees.
Preferably, the 5 crushing cutter tooth holders are provided with key grooves, the 5 key grooves are kept on the same straight line along the axis of the crushing shaft, and the 5 crushing cutter tooth holders are connected with the crushing shaft through a flat key.
Preferably, the crushing cutter teeth comprise first cutter teeth and second cutter teeth, and the first cutter teeth and the second cutter teeth are symmetrically arranged on the center line of the crushing cutter teeth seat.
Preferably, the first cutter teeth and the second cutter teeth arranged on the left cutter tooth holder and the first cutter teeth and the second cutter teeth arranged on the right cutter tooth holder are symmetrically arranged in the radial direction of the crushing shaft by taking the crushing shaft as a center.
Preferably, the first cutter tooth, the second cutter tooth and the crushing cutter tooth seat are connected through a check bolt assembly.
Preferably, the lockbolt assembly comprises a cutter tooth bolt, a fastening bolt and a lockwasher, and the cutter tooth bolt and the fastening nut are clamped by the lockwasher.
Preferably, the crushing shaft group further comprises a bearing seat, bearings and a transparent cover, the bearing seats are arranged at two ends of the crushing shaft, the transparent cover is fixedly arranged on the outer end face of the bearing seat, the bearings are arranged in the bearing seats, and the bearings are tapered roller bearings.
Preferably, the power part comprises a motor, a hydraulic coupler, a speed reducer and a half coupling, wherein the motor is in transmission connection with the speed reducer through the hydraulic coupler, and the speed reducer is in transmission connection with the crushing shaft group through the half coupling.
Preferably, the first cutter tooth or the second cutter tooth is in a boss shape, the end face of the top end of the first cutter tooth or the end face of the top end of the second cutter tooth is a smooth arc surface, and the top end of the first cutter tooth or the top end of the second cutter tooth points to the circular-circumscribed line direction of the cross section of the crushing shaft.
Each crushing cutter tooth seat consists of a left cutter tooth seat and a right cutter tooth seat which are symmetrically arranged, and the crushing cutter tooth seats are uniformly distributed along the radial direction of the crushing shaft by 360 degrees, so that the dynamic balance in the running process of the crushing shaft group is ensured; the crushing cutter teeth on the crushing shaft group change the traditional cross and straight arrangement modes, and the gradual change spiral arrangement mode is adopted, so that the crushing process is changed into gradual change crushing from interval crushing, the stress state of the crushing shaft group is improved, the problems of high recoil force and high vibration of the crushing shaft caused by simultaneous stress of multiple cutter teeth of the crushing shaft group can be effectively reduced, the excessive crushing problem of massive materials in the crushing process is solved, the loading power of the crusher is reduced, the risk of accidents caused by easy blockage is reduced, and the crushing efficiency is improved.
Drawings
Fig. 1 is a front view of the progressive coal mine downhole wheel breaker.
Fig. 2 is a partial cutaway view of a top view of the progressive coal mine downhole wheeled breaker.
Fig. 3 is a right side view of the progressive coal mine downhole wheel breaker.
Fig. 4 is an isometric view of the crushing shaft set.
Fig. 5 is a partly cut-away view of a front view of the crushing shaft group.
Fig. 6 is a right side view of the crushing shaft group.
In the figure: the crushing tank 10, the input tank 20, the inlet frame 30, the outlet frame 40, the crushing shaft group 50, the crushing shaft 51, the crushing cutter tooth holder 52, the left cutter tooth holder 521, the right cutter tooth holder 522, the crushing cutter tooth 53, the first cutter tooth 531, the second cutter tooth 532, the flat key 54, the lockbolt assembly 55, the bearing housing 56, the bearing 57, the transmission cover 58, the power section 60, the motor 61, the fluid coupling 62, the speed reducer 63, and the half coupling 64.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Referring to fig. 1 to 6, an embodiment of the invention provides a wheel crusher for a gradually-broken coal mine, which is matched with a crossheading conveyor, and crushed raw coal is conveyed to the crusher by the conveyor to be crushed and then conveyed away by the conveyor; the crusher comprises a crushing tank 10, an input tank 20, an inlet frame 30, an outlet frame 40, a crushing shaft group 50 and a power part 60; an input groove 20, an inlet frame 30 and an outlet frame 40 which are sequentially connected are arranged above the crushing groove 10, an input port of the crushing groove 10 is used for being connected with a middle groove of a landing section of the transfer conveyor so that coal blocks conveyed by the transfer conveyor enter the crushing groove 10, and two ends of a crushing shaft group 50 are rotatably arranged on two side walls between the inlet frame 30 and the outlet frame 40 so as to crush the coal blocks entering the crushing groove 10 and output the crushed coal blocks from an output port of the crushing groove 10; the output end of the power part 60 is rotationally connected with the crushing shaft group 50 so as to drive the crushing shaft group 50 to rotate around the axis thereof; the crushing shaft group 50 comprises a crushing shaft 51 and a plurality of crushing units arranged along the axial direction of the crushing shaft 51, each crushing unit comprises a crushing cutter tooth holder 52 and crushing cutter teeth 53, each crushing cutter tooth holder 52 comprises a left cutter tooth holder 521 and a right cutter tooth holder 522, the left cutter tooth holders 521 and the right cutter tooth holders 522 are symmetrically arranged around the crushing shaft 51 in the radial direction of the crushing shaft 51, the crushing cutter teeth 53 are arranged at the ends of the left cutter tooth holders 521 and the right cutter tooth holders 522, the crushing cutter tooth holders 52 are sequentially arranged along the axial direction of the crushing shaft 51, the crushing cutter tooth holders 52 sequentially rotate clockwise by a certain angle by taking the crushing shaft 51 as an axis so as to form gradual spiral arrangement around the annular wall of the crushing shaft 51 in the radial direction of the crushing shaft 51, two adjacent crushing cutter tooth holders 52 are different by the same angle in the radial direction of the crushing shaft 51, and two crushing cutter tooth holders 52 at two ends of the crushing shaft 51 are different by 180 DEG in the radial direction of the crushing shaft 51.
The crushing shaft group 50 is a main component for crushing materials, and utilizes the kinetic energy stored by the higher rotational inertia of the component at the rated rotational speed to strike the coal blocks through the impact force formed by the short contact time of cutter teeth arranged on the crusher shaft and crushed species, and the speed difference between the cutter tooth seat, the scraper chain and the crusher further rolls and rubs the crushed coal in a passing way so as to achieve the aim of crushing the coal.
Each crushing cutter tooth seat 52 consists of a left cutter tooth seat 521 and a right cutter tooth seat 522 which are symmetrically arranged, and the crushing cutter tooth seats 52 are uniformly distributed along the radial direction 360 degrees of the crushing shaft 51, so that the dynamic balance in the running process of the crushing shaft group 50 is ensured; the service life of the crushing shaft 51 is shortened sharply by avoiding strong vibration generated by the gradual reduction, the crushing cutter teeth 53 on the crushing shaft group 50 change the traditional cross and straight arrangement mode, the gradual screw arrangement mode is adopted, the crushing process is changed from interval crushing to gradual crushing, the stress state of the crushing shaft group 50 is improved, the problems of large recoil force and large vibration of the crushing shaft 51 caused by simultaneous stress of multiple cutter teeth of the crushing shaft group 50 can be effectively reduced, the over-crushing problem of massive materials in the crushing process is solved, the loading power of the crusher and the risk of blockage accidents are reduced, and the crushing efficiency is improved.
Referring to fig. 4 to 6, further, the number of the crushing cutter tooth holders 52 is 5, and adjacent two crushing cutter tooth holders 52 are different by 36 ° in the radial direction of the crushing shaft 51.
Referring to fig. 4, further, 5 crushing cutter tooth holders 52 are provided with key grooves, 5 key grooves are kept on the same straight line along the axis of the crushing shaft 51, and 5 crushing cutter tooth holders 52 are coupled to the crushing shaft by a flat key 54.
Referring to fig. 4 and 5, further, the crushing cutter teeth 53 include first and second cutter teeth 531, 532, and the first and second cutter teeth 531, 532 are symmetrically arranged with respect to the center line of the crushing cutter tooth holder 52.
Referring to fig. 4 and 5, further, the first and second cutter teeth 531, 532 mounted on the left cutter tooth holder 521 and the first and second cutter teeth 531, 532 mounted on the right cutter tooth holder 522 are symmetrically arranged about the crushing shaft 51 in the radial direction of the crushing shaft 51.
Referring to fig. 4 and 5, further, the first cutter tooth 531, the second cutter tooth 532 and the crushing cutter tooth holder 52 are coupled by a lockbolt assembly 55.
Further, the lockbolt assembly 55 includes a cutter tooth bolt, a fastening bolt, and a lockwasher, and the cutter tooth bolt is clamped with the lockwasher for the fastening nut.
As a specific embodiment, the friction force between the cutter tooth bolt and the fastening bolt is increased by using the anti-loosening gasket, so that the screw loosening can be effectively prevented.
Referring to fig. 4 to 6, further, the crushing shaft group 50 further includes a bearing seat 56, a bearing 57, and a transparent cover 58, the bearing seat 56 is installed at both ends of the crushing shaft 51, the transparent cover 58 is fixedly installed at the outer end surface of the bearing seat 56, the bearing 57 is installed in the bearing seat 56, and the bearing 57 is a tapered roller bearing; the tapered roller bearing can bear combined acting forces in the axial direction and the radial direction simultaneously.
Referring to fig. 1, further, the power part 60 includes a motor 61, a fluid coupling 62, a decelerator 63, and a half coupling 64, the motor 61 is in transmission connection with the decelerator 63 through the fluid coupling 62, and the decelerator 63 is in transmission connection with the crushing shaft group 50 through the half coupling 64; the use of the fluid coupling 62 can reduce the impact vibration of the power section 60.
Referring to fig. 4, further, the first cutter tooth 531 or the second cutter tooth 532 is in a boss shape, the top end surface of the first cutter tooth 531 or the second cutter tooth 532 is a smooth arc surface, and the top end of the first cutter tooth 531 or the second cutter tooth 532 is arranged in the direction of the circular external cutting line of the cross section of the crushing shaft 51.
In this embodiment, the first cutter tooth 531 or the second cutter tooth 532 can vertically strike the coal block in a tangential direction when contacting the coal block, so that the power consumption when crushing the coal block is reduced, and the stress direction of the first cutter tooth 531 or the second cutter tooth 532 is along the height direction of the first cutter tooth 531 or the second cutter tooth 532, so that the stress is concentrated, and the damage rate of the first cutter tooth 531 or the second cutter tooth 532 is reduced.
Further, the power part 60 adopts belt transmission, so that the stability and impact resistance of the equipment are improved; the bearings 57 of the crushing shaft set 50 are intensively lubricated by a manual oil drying station, so that the oiling period is prolonged, the oiling workload is reduced, the lubrication is reliable, and some unsafe factors are eliminated.
Further, the crushing granularity adjusting structure adopts a structure of a hand pump, a jack and a cushion block, can perform adjusting operation under the conditions of not dismantling the crusher and not using external hoisting equipment, and is convenient to operate, safe, reliable, time-saving and labor-saving.
When the crusher works, the cutter teeth rotate to cause rapid air flow in the coal breaking process of frequent hammering, so that a large amount of coal dust is generated, the visibility of a working place is reduced, normal work is influenced, and safety and personnel are also adversely affected. Therefore, dust removal and dust fall are needed in time, and the dust content in the air is reduced to the maximum extent; the crusher is provided with a spraying dustproof system, dust curtains are arranged at the inlet and the outlet, and sputtered granular coal and coal dust generated in the crushing process are sealed in a crushing essence to prevent the dust curtains from flying out to endanger personal safety and health.
The modules or units in the device of the embodiment of the invention can be combined, divided and deleted according to actual needs.
The foregoing disclosure is illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the scope of the invention, as it is understood by those skilled in the art that all or part of the above-described embodiments may be practiced with equivalents thereof, which fall within the scope of the invention as defined by the appended claims.
Claims (7)
1. A gradually broken formula colliery is wheeled breaker for pit which characterized in that: the crusher comprises a crushing groove, an input groove, an inlet frame, an outlet frame, a crushing shaft group and a power part; an input groove, an inlet frame and an outlet frame which are connected in sequence are arranged above the crushing groove, an input port of the crushing groove is used for being connected with a middle groove of a land section of the transfer conveyor so that coal blocks conveyed by the transfer conveyor enter the crushing groove, and two ends of the crushing shaft group are rotatably arranged on two side walls between the inlet frame and the outlet frame so as to output the crushed coal blocks from an output port of the crushing groove after the crushed coal blocks enter the crushing groove; the output end of the power part is rotationally connected with the crushing shaft group so as to drive the crushing shaft group to rotate around the axis of the crushing shaft group; the crushing shaft group comprises a crushing shaft and a plurality of crushing units arranged along the axial direction of the crushing shaft, each crushing unit comprises a crushing cutter tooth holder and a crushing cutter tooth, each crushing cutter tooth holder comprises a left cutter tooth holder and a right cutter tooth holder, the left cutter tooth holder and the right cutter tooth holder are symmetrically arranged along the radial direction of the crushing shaft by taking the crushing shaft as the center, the crushing cutter teeth are arranged at the end parts of the left cutter tooth holder and the right cutter tooth holder, the crushing cutter tooth holders are sequentially arranged along the axial direction of the crushing shaft, the crushing cutter tooth holders sequentially rotate clockwise by a certain angle by taking the crushing shaft as the axis so as to form gradual spiral arrangement around the wall of the crushing shaft in the radial direction of the crushing shaft, and the two crushing cutter tooth holders at the two ends of the crushing shaft are different by 180 DEG in the radial direction of the crushing shaft; the number of the crushing cutter tooth seats is 5, and the radial direction of the crushing shaft is different by 36 degrees between two adjacent crushing cutter tooth seats; the 5 crushing cutter tooth seats are provided with key grooves, the 5 key grooves are kept on the same straight line along the axis of the crushing shaft, and the 5 crushing cutter tooth seats are connected with the crushing shaft through a flat key; the crushing cutter teeth comprise first cutter teeth and second cutter teeth, and the first cutter teeth and the second cutter teeth are symmetrically arranged on the center line of the crushing cutter teeth seat.
2. The progressive coal mine downhole wheeled breaker of claim 1, wherein: the first cutter teeth and the second cutter teeth arranged on the left cutter tooth seat and the first cutter teeth and the second cutter teeth arranged on the right cutter tooth seat are symmetrically arranged in the radial direction of the crushing shaft by taking the crushing shaft as a center.
3. The progressive coal mine downhole wheeled breaker of claim 1, wherein: the first cutter tooth, the second cutter tooth and the crushing cutter tooth seat are connected through a check bolt assembly.
4. A progressive coal mine downhole wheel breaker as claimed in claim 3, wherein: the anti-loose bolt assembly comprises a cutter tooth bolt, a fastening bolt and an anti-loose gasket, wherein the cutter tooth bolt and the fastening nut are clamped by the anti-loose gasket.
5. The progressive coal mine downhole wheeled breaker of claim 1, wherein: the crushing shaft group further comprises bearing seats, bearings and a transparent cover, the bearing seats are arranged at two ends of the crushing shaft, the transparent cover is fixedly arranged on the outer end face of each bearing seat, the bearings are arranged in the bearing seats, and the bearings are tapered roller bearings.
6. The progressive coal mine downhole wheeled breaker of claim 1, wherein: the power part comprises a motor, a hydraulic coupler, a speed reducer and a half coupler, wherein the motor is in transmission connection with the speed reducer through the hydraulic coupler, and the speed reducer is in transmission connection with the crushing shaft group through the half coupler.
7. The progressive coal mine downhole wheel breaker of claim 2, wherein: the first cutter tooth or the second cutter tooth is in a boss shape, the end face of the top end of the first cutter tooth or the end face of the top end of the second cutter tooth is a smooth arc face, and the top end of the first cutter tooth or the top end of the second cutter tooth points to the circular external tangent direction of the cross section of the crushing shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810062090.5A CN108160272B (en) | 2018-01-23 | 2018-01-23 | Gradually broken formula colliery is wheeled breaker for pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810062090.5A CN108160272B (en) | 2018-01-23 | 2018-01-23 | Gradually broken formula colliery is wheeled breaker for pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108160272A CN108160272A (en) | 2018-06-15 |
| CN108160272B true CN108160272B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810062090.5A Active CN108160272B (en) | 2018-01-23 | 2018-01-23 | Gradually broken formula colliery is wheeled breaker for pit |
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| Country | Link |
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| CN110694745A (en) * | 2019-11-13 | 2020-01-17 | 淄博科漫机电设备有限公司 | Continuous two-stage crushing type crusher |
| CN112892770B (en) * | 2021-03-22 | 2025-07-25 | 天地上海采掘装备科技有限公司 | Crushing tooth assembly and crusher |
| CN115228589B (en) * | 2022-08-10 | 2024-04-26 | 三一重型装备有限公司 | Intelligent stepless adjustment crusher |
| CN118925865A (en) * | 2024-08-09 | 2024-11-12 | 宁夏天地奔牛实业集团有限公司 | Split-box mining crusher, crushing shaft structure and assembly method |
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