CN110608038A - Drum type crushing roller for coal cutter - Google Patents
Drum type crushing roller for coal cutter Download PDFInfo
- Publication number
- CN110608038A CN110608038A CN201911026941.1A CN201911026941A CN110608038A CN 110608038 A CN110608038 A CN 110608038A CN 201911026941 A CN201911026941 A CN 201911026941A CN 110608038 A CN110608038 A CN 110608038A
- Authority
- CN
- China
- Prior art keywords
- group
- drum
- tooth
- roller body
- cutting teeth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 44
- 230000036346 tooth eruption Effects 0.000 claims abstract description 41
- 238000005065 mining Methods 0.000 description 11
- 238000009825 accumulation Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 208000008312 Tooth Loss Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
- E21C25/10—Rods; Drums
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to a drum-type crushing roller for a coal cutter, which comprises a roller body, a connecting disc and a plurality of tooth holders and cutting teeth which correspond one to one, wherein the cutting teeth are fixed on the corresponding tooth holders, the tooth holders are distributed on the outer cylindrical surface of the roller body and are fixedly connected with the roller body, the tooth holders and the cutting teeth are divided into a plurality of groups along the axial direction of the roller body, the plurality of tooth holders in each group are distributed on one circumference of the outer cylindrical surface of the roller body, the distance from the tooth tips of the cutting teeth to the outer cylindrical surface of the roller body is the largest by taking the middle group as the largest distance, the groups which are closer to the two axial ends of the roller body are smaller, the connecting disc is coaxially fixed on one axial end of the roller body, and a plurality of sawtooth-type crushing teeth are distributed on. The invention has stronger coal breaking capability and longer service life.
Description
Technical Field
The invention relates to a roller on a crushing device for a coal mining machine, and belongs to the technical field of coal mining equipment.
Background
With the progress of coal mining technology and equipment in recent years, more and more thick and ultra-thick coal seams begin to adopt once-mining full-height technology and equipment. The higher the mining height, the greater the probability of the rib caving phenomenon. The large coal blocks falling off from the upper part fall onto the scraper conveyor under the action of gravity, and the crushing device is required to crush the upper coal blocks.
As the scraper conveyer is always in a working running state, the lump coal falling to the middle part of the scraper conveyer can be transported away in a short time, and the lump coal falling to the two sides of the scraper conveyer is difficult to transport away, so that the lump coal integrally presents a concave structure, the middle part is low, the two sides are high, and the lump coal accumulation state shown in figure 1 is formed.
The distances from tooth crests of all cutting teeth on a roller of the conventional crushing device to an outer cylindrical surface of a roller body are equal, namely the tooth crests of all the cutting teeth are positioned on the same cylindrical surface. This results in the crushing drum contacting the lump coal first with the cutting teeth on the sectional lines near the two ends of the drum body in the lump coal stacking state shown in fig. 1, while the cutting teeth on the intermediate sectional line are difficult to contact the lump coal, the cutting teeth have large and small workload, each cutting tooth cannot function uniformly, and there are problems of low coal crushing efficiency, large workload of the cutting teeth on both sides, and low service life.
With the gradual increase of the caving lump coal, the problem that the crushing roller has stronger crushing capability under the premise of unchanged power becomes urgent to be solved.
Disclosure of Invention
The invention aims to provide a drum-type crushing roller for a coal mining machine, which has stronger coal crushing capability and longer service life.
The main technical scheme of the invention is as follows:
the drum-type crushing drum for the coal mining machine comprises a drum body and a plurality of tooth holders and cutting teeth which correspond to each other one by one, wherein the cutting teeth are fixed on the corresponding tooth holders, the tooth holders are distributed on the outer cylindrical surface of the drum body and are fixedly connected with the drum body relatively, the tooth holders and the cutting teeth are divided into a plurality of groups along the axial direction of the drum body, the plurality of tooth holders in each group are dispersedly distributed on one circumference of the outer cylindrical surface of the drum body, the distance from the tooth tips of the cutting teeth to the outer cylindrical surface of the drum body is the largest by using a middle group, the groups which are closer to the two axial ends of the drum body are smaller, and the envelope curved surfaces of the tooth tips of all the cutting teeth form a drum-.
The tooth holder and the cutting teeth can be divided into five groups along the axial direction of the roller body, and the first group, the second group, the third group, the fourth group and the fifth group are respectively arranged from one axial end of the roller body to the other axial end of the roller body.
The drum-type crushing roller for the coal mining machine further comprises a first cushion block and a second cushion block, the toothholders of the second group and the fourth group are fixed on the first cushion block, the toothholders of the third group are fixed on the second cushion block, the first cushion block and the second cushion block are both fixed on the outer cylindrical surface of the roller body, the height of the first cushion block is smaller than that of the second cushion block, the toothholders of the first group and the fifth group are directly fixed on the outer cylindrical surface of the roller body, specifications of all the toothholders are the same, and specifications of the cutting teeth are the same.
The tooth holders of the first group, the third group and the fifth group are linearly arranged along a plurality of generatrices of the outer cylindrical surface of the roller body in the axial direction, one tooth holder of the first group, one tooth holder of the third group and one tooth holder of the fifth group are arranged on each generatrix, the tooth holders of the second group and the fourth group are linearly arranged along a plurality of generatrices of the outer cylindrical surface of the roller body in the axial direction, one tooth holder of the second group and one tooth holder of the fourth group are arranged on each generatrix, and the tooth holders of the second group and the tooth holders of the fourth group are mutually staggered with the tooth holders of the first group, the third group and the fifth group in the circumferential.
The mounting directions of the three cutting picks corresponding to the same bus bar in each pair of the first group, the third group and the fifth group are consistent, and the mounting directions of the two cutting picks corresponding to the same bus bar in each pair of the second group and the fourth group are consistent.
All the cutting picks are installed along the circumferential direction of the drum body in the clockwise or anticlockwise direction.
The paired tooth holders and cutting teeth in the same group are uniformly distributed according to the circumference.
The included angles of the overhanging directions of all cutting teeth relative to the outer cylindrical surface of the roller body are equal.
The drum-type crushing roller for the coal mining machine further comprises a connecting disc, the connecting disc is coaxially fixed at one axial end of the roller body, and a plurality of sawtooth-type crushing teeth are preferably arranged on the cylindrical surface of the connecting disc in a scattered mode along the circumference.
A plurality of sawtooth type broken teeth are evenly distributed along the circumference of the connecting disc.
The invention has the beneficial effects that:
the drum-shaped structure with the high middle and the low two ends can be matched with the accumulation state of the concave lump coal on the scraper conveyor and attached to each other, so that all cutting teeth can effectively participate in crushing work, the cutting tooth loss is reduced, and the crushing efficiency is greatly improved.
The drum adopts the design of five section lines, and the cutting teeth of adjacent section lines are distributed in a staggered manner, so that the arrangement number of the cutting teeth is increased, and the coal breaking capacity of the drum is improved.
According to the invention, a plurality of sawtooth-shaped crushing teeth are dispersedly arranged on the cylindrical surface of the connecting disc along the circumference, so that the coal crushing capability of the roller is further improved, and the service life of the roller is further prolonged.
Drawings
FIG. 1 is a schematic diagram of a state of lump coal accumulation on a prior art lower scraper conveyor;
fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Description of the drawings:
1. a cutting pick; 2. a tooth holder; 3. a first cushion block; 4. a second cushion block; 5. a roller body; 6. a first section line; 7. a second section line; 8. a drum-shaped structure; 9. a sawtooth-shaped crushing tooth; 10. a fourth section line; 11. a fifth section line; 12. a third section line; 13. and (7) connecting the disc.
Detailed Description
The invention discloses a drum-type crushing drum for a coal cutter, which comprises a cylindrical drum body 5, and a plurality of tooth holders 2 and cutting teeth 1 which correspond to each other one by one, wherein the cutting teeth are fixed on the corresponding tooth holders to form a cutting system, as shown in figure 2. The tooth holders are distributed on the outer cylindrical surface of the drum body and fixedly connected with the drum body, the tooth holders and the cutting teeth are divided into a plurality of groups along the axial direction of the drum body, the plurality of tooth holders in each group are distributed on one circumference of the outer cylindrical surface of the drum body, the distance from the tooth tops of the cutting teeth to the outer cylindrical surface of the drum body is the largest by taking the middle group as the largest, the groups closer to the two axial ends of the drum body are smaller, and the enveloping curved surfaces of the tooth tops of all the cutting teeth form a drum-shaped structure 8 with a high middle part and low two ends.
The convex structure of the drum-shaped crushing roller can be matched with the concave lump coal accumulation state on the scraper conveyor and attached to each other, so that all cutting teeth can effectively participate in crushing work, the cutting tooth loss is reduced, and the crushing efficiency is greatly improved.
The tooth holder and the cutting teeth can be divided into five groups along the axial direction of the roller body, and the first group, the second group, the third group, the fourth group and the fifth group are respectively arranged from one axial end of the roller body to the other axial end of the roller body. Each circumference is referred to herein as a stub, and the first to fifth sets correspond to the first stub 6, the second stub 7, the third stub 12, the fourth stub 10, and the fifth stub 11, respectively.
The drum-type crushing roller for the coal mining machine can further comprise a first cushion block 3 and a second cushion block 4, the tooth holders of the second group and the fourth group are fixed on the first cushion block, the tooth holder of the third group is fixed on the second cushion block, the first cushion block and the second cushion block are both fixed on the outer cylindrical surface of the roller body, the height of the first cushion block is smaller than that of the second cushion block, and the tooth holders of the first group and the fifth group are directly fixed on the outer cylindrical surface of the roller body, so that a drum-shaped structure 8 with a high middle and low two ends is realized. In this case, it is preferable that all the seats have the same specification, and the picks have the same specification, simplifying manufacture and assembly. In this embodiment, the first and second spacers are welded to the drum body.
The tooth holders of the first group, the third group and the fifth group are linearly arranged along a plurality of generatrices of the outer cylindrical surface of the roller body in the axial direction, one tooth holder of the first group, one tooth holder of the third group and one tooth holder of the fifth group are arranged on each generatrix, the tooth holders of the second group and the fourth group are linearly arranged along a plurality of generatrices of the outer cylindrical surface of the roller body in the axial direction, one tooth holder of the second group and one tooth holder of the fourth group are arranged on each generatrix, and the tooth holders of the second group and the tooth holders of the fourth group are mutually staggered with the tooth holders of the first group, the third group and the fifth group in the circumferential. The whole design that adopts five transversal lines of cylinder, and the pick of adjacent transversal staggers the distribution, and this kind of structure has increased the quantity that the pick arranged on the one hand, and on the other hand has promoted the broken coal ability of cylinder.
The mounting directions of the three cutting picks corresponding to the same bus bar in each pair of the first group, the third group and the fifth group are consistent, and the mounting directions of the two cutting picks corresponding to the same bus bar in each pair of the second group and the fourth group are consistent.
The direction of mounting of each pick is angled away from the respective radial direction of the drum body, and the axes of the picks preferably lie in the plane formed by the respective sectional lines. All the cutting picks are installed along the circumferential direction of the drum body in the clockwise or anticlockwise direction.
The paired tooth holders and cutting teeth in the same group are uniformly distributed according to the circumference.
Furthermore, included angles of the overhanging directions of all cutting teeth relative to the outer cylindrical surface of the roller body are equal, so that the cutting teeth are stressed uniformly, the coal breaking capacity of the roller is improved, and the service life of the roller is prolonged.
The drum-type crushing roller for the coal mining machine further comprises a connecting disc 13, the connecting disc is coaxially fixed at one axial end of the roller body, and a plurality of sawtooth-type crushing teeth 9 are preferably arranged on the cylindrical surface of the connecting disc in a scattered mode along the circumference, so that more teeth are arranged at one end, close to the connecting disc, of the connecting disc to participate in crushing, and therefore the coal crushing capacity of the roller is further improved, and the service life of the roller is further prolonged.
The plurality of sawtooth-shaped crushing teeth are preferably evenly distributed along the circumference of the connecting disc.
Claims (10)
1. The utility model provides a coal-winning machine is with drum type crushing roller which characterized in that: the drum type tooth holder comprises a drum body and a plurality of tooth holders and cutting teeth in one-to-one correspondence, the cutting teeth are fixed on the tooth holders correspondingly, the tooth holders are distributed on an outer cylindrical surface of the drum body and are fixedly connected with the drum body relatively, the tooth holders and the cutting teeth are divided into a plurality of groups along the axial direction of the drum body, the plurality of tooth holders in each group are dispersedly arranged on one circumference of the outer cylindrical surface of the drum body, the tooth tops of the cutting teeth reach the distance between the outer cylindrical surfaces of the drum body, the distance between the middle groups is the largest, the groups closer to the two axial ends of the drum body are smaller, and the envelope surface of the tooth tops of all the cutting teeth forms a drum type.
2. The drum-type crushing drum for a coal cutter according to claim 1, characterized in that: the tooth holder and the cutting teeth are divided into five groups along the axial direction of the roller body, and the first group, the second group, the third group, the fourth group and the fifth group are respectively arranged from one axial end of the roller body to the other axial end of the roller body.
3. The drum-type crushing drum for a coal cutter according to claim 2, characterized in that: the roller body is characterized by further comprising a first cushion block and a second cushion block, the tooth holders of the second group and the fourth group are fixed on the first cushion block, the tooth holders of the third group are fixed on the second cushion block, the first cushion block and the second cushion block are fixed on the outer cylindrical surface of the roller body, the height of the first cushion block is smaller than that of the second cushion block, the tooth holders of the first group and the fifth group are directly fixed on the outer cylindrical surface of the roller body, all the tooth holders are identical in specification, and the cutting teeth are identical in specification.
4. The drum-type crushing drum for a coal cutter according to claim 3, characterized in that: the tooth holders of the first group, the third group and the fifth group are linearly arranged along a plurality of generatrices of the outer cylindrical surface of the roller body in the axial direction, one tooth holder of the first group, one tooth holder of the third group and one tooth holder of the fifth group are arranged on each generatrix, the tooth holders of the second group and the fourth group are linearly arranged along a plurality of generatrices of the outer cylindrical surface of the roller body in the axial direction, one tooth holder of the second group and one tooth holder of the fourth group are arranged on each generatrix, and the tooth holders of the second group and the tooth holders of the fourth group are mutually staggered with the tooth holders of the first group, the third group and the fifth group in the circumferential.
5. The drum-type crushing drum for a coal cutter according to claim 4, characterized in that: the mounting directions of the three cutting picks corresponding to the same bus bar in each pair of the first group, the third group and the fifth group are consistent, and the mounting directions of the two cutting picks corresponding to the same bus bar in each pair of the second group and the fourth group are consistent.
6. The drum-type crushing drum for a coal cutter according to claim 5, characterized in that: all the cutting picks are installed along the circumferential direction of the drum body in the clockwise or anticlockwise direction.
7. The drum-type crushing drum for a coal cutter according to claim 6, characterized in that: the paired tooth holders and cutting teeth in the same group are uniformly distributed according to the circumference.
8. The drum-type crushing drum for a coal cutter according to claim 7, characterized in that: the included angles of the overhanging directions of all cutting teeth relative to the outer cylindrical surface of the roller body are equal.
9. The drum-type crushing drum for a coal cutter according to claim 1, 2, 3, 4, 5, 6, 7 or 8, characterized in that: the roller body is characterized by further comprising a connecting disc, the connecting disc is coaxially fixed at one axial end of the roller body, and a plurality of sawtooth-shaped crushing teeth are arranged on the cylindrical surface of the connecting disc in a dispersed mode along the circumference.
10. The drum-type crushing drum for a coal cutter according to claim 9, characterized in that: a plurality of sawtooth type broken teeth are evenly distributed along the circumference of the connecting disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026941.1A CN110608038A (en) | 2019-10-26 | 2019-10-26 | Drum type crushing roller for coal cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026941.1A CN110608038A (en) | 2019-10-26 | 2019-10-26 | Drum type crushing roller for coal cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110608038A true CN110608038A (en) | 2019-12-24 |
Family
ID=68895491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911026941.1A Pending CN110608038A (en) | 2019-10-26 | 2019-10-26 | Drum type crushing roller for coal cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110608038A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338671A (en) * | 2008-08-08 | 2009-01-07 | 中国矿业大学 | Hob cutter type coal cutter drum |
| CN102139801A (en) * | 2009-08-18 | 2011-08-03 | 乔伊·姆·特拉华公司 | Lump breaker between a longwall automated face conveyor and a beam stage loader cross feed conveyor |
| CN105545304A (en) * | 2015-12-18 | 2016-05-04 | 重庆市合川区九峰煤炭有限公司 | Single coal cylinder coal cutter and operation method thereof |
| CN108222930A (en) * | 2017-12-27 | 2018-06-29 | 神华集团有限责任公司 | Toothed roller type crushing roller |
| CN210829245U (en) * | 2019-10-26 | 2020-06-23 | 天地科技股份有限公司上海分公司 | Drum type crushing roller for coal cutter |
-
2019
- 2019-10-26 CN CN201911026941.1A patent/CN110608038A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338671A (en) * | 2008-08-08 | 2009-01-07 | 中国矿业大学 | Hob cutter type coal cutter drum |
| CN102139801A (en) * | 2009-08-18 | 2011-08-03 | 乔伊·姆·特拉华公司 | Lump breaker between a longwall automated face conveyor and a beam stage loader cross feed conveyor |
| CN105545304A (en) * | 2015-12-18 | 2016-05-04 | 重庆市合川区九峰煤炭有限公司 | Single coal cylinder coal cutter and operation method thereof |
| CN108222930A (en) * | 2017-12-27 | 2018-06-29 | 神华集团有限责任公司 | Toothed roller type crushing roller |
| CN210829245U (en) * | 2019-10-26 | 2020-06-23 | 天地科技股份有限公司上海分公司 | Drum type crushing roller for coal cutter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210829245U (en) | Drum type crushing roller for coal cutter | |
| CN110608038A (en) | Drum type crushing roller for coal cutter | |
| CN202610692U (en) | Milling rotor | |
| CN203862301U (en) | Tooth roller with double-tooth structure | |
| CN218595426U (en) | Replaceable middle bottom plate convex groove for coal mine crossheading reversed loader | |
| CN109968475A (en) | Corn stover leaf separating device | |
| CN203090873U (en) | Compression roller shaft on compression device of granulator | |
| CN211636654U (en) | Quick breaker of coal cinder | |
| CN209667842U (en) | A kind of shock resistance coupling type lining slot apparatus | |
| CN211031357U (en) | Ball press roller sleeve device | |
| CN208944208U (en) | Crusher is used in coal ash autoclaved production | |
| CN207554040U (en) | A kind of coal mining machine roller combined type end plate | |
| CN210422607U (en) | Large-scale coal-winning machine helical drum | |
| CN203221261U (en) | Solar battery piece welding soldering bit | |
| CN201470437U (en) | Wear-resisting lining tile for coalmill roller | |
| CN202663066U (en) | Composite lead shockproof hammer capable of preventing shifting | |
| CN202516618U (en) | Rotor of sand making machine | |
| CN218493599U (en) | Welding-free shield tail brush assembly | |
| CN214464137U (en) | Coal mining machine roller suitable for cutting hard rock and hard coal | |
| CN215613248U (en) | Protection device for material lifting plate of powder concentrator | |
| CN217262812U (en) | Ceramic belt type sweeper with elastic energy storage function | |
| CN211487893U (en) | Tooth-shaped structure of tooth roller | |
| CN220611864U (en) | Forming roller structure of tile pressing machine | |
| CN216470272U (en) | Link pin shaft for scraper chain and scraper attachment of slag-raking machine | |
| CN203285436U (en) | Coal cutter rocker arm with high block coal rate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |