CN110700827A - Compact easy-maintenance tooth holder - Google Patents
Compact easy-maintenance tooth holder Download PDFInfo
- Publication number
- CN110700827A CN110700827A CN201911062257.9A CN201911062257A CN110700827A CN 110700827 A CN110700827 A CN 110700827A CN 201911062257 A CN201911062257 A CN 201911062257A CN 110700827 A CN110700827 A CN 110700827A
- Authority
- CN
- China
- Prior art keywords
- tooth
- toothholder
- sleeve
- hole
- maintain
- 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
- 238000012423 maintenance Methods 0.000 title claims abstract description 10
- 238000005507 spraying Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 4
- 210000003781 tooth socket Anatomy 0.000 claims 3
- 239000003245 coal Substances 0.000 abstract description 12
- 238000009434 installation Methods 0.000 description 6
- 238000005065 mining Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- E21C35/187—Mining picks; Holders therefor with arrangement of fluid-spraying nozzles
-
- 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
- E21C35/19—Means for fixing picks or holders
- E21C35/197—Means for fixing picks or holders using sleeves, rings or the like, as main fixing elements
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 compact easy-maintenance tooth holder which comprises a tooth holder body and a tooth sleeve, wherein the tooth sleeve is tightly matched in a main hole on the tooth holder body, the wall thickness of the tooth sleeve is within the range of 3-5mm, the hardness of the tooth sleeve is between 58-62HRC, an O-shaped ring mounting groove is arranged on the outer wall of the tooth sleeve, an O-shaped ring is arranged in the O-shaped ring mounting groove, an oil hole is also formed in the tooth holder body, the inner end opening of the oil hole is communicated with the main hole and is positioned on the inner side of the O-shaped ring, the outer end opening of the oil hole is formed in the outer surface of the tooth holder body, a section of threaded hole is formed in the outer end opening of the oil hole, and the tooth holder body is blocked by a. The invention has small size and convenient maintenance, can be used for a small roller of a thin coal seam, and improves the reliability and the adaptability of the roller.
Description
Technical Field
The invention relates to a cutting pick holder used on a roller of a coal mining machine, belonging to the technical field of coal mining equipment.
Background
The tooth holder is an important part on a roller of a coal mining machine, is welded on a roller body, and is provided with a cutter to realize coal cutting of the roller. For a long time, in order to ensure the strength and reliability of the tooth holder, the tooth holder body is overlarge, and meanwhile, the tooth holder sleeve protecting tooth holder body is installed, so that the performance of the roller is limited, particularly for a small roller with a thin coal seam, the tooth holder is overlarge in size and cannot be used on the roller with a small diameter, therefore, only a small series of tooth holders and small cutting teeth can be selected, the cutting performance is reduced, the height of a roller blade is limited, and the coal charging performance of the roller is reduced. And the tooth seat provided with the tooth sleeve is easy to cause the tooth sleeve to fall off in the high-speed rotation process of the roller, and the replacement of the tooth sleeve needs special calipers, which is troublesome.
Disclosure of Invention
The invention aims to provide a compact and easily-maintained tooth holder which is small in size and convenient to maintain, can be used for a small roller of a thin coal seam, and improves the reliability and the adaptability of the roller.
The main technical scheme of the invention is as follows:
a compact easy-maintenance tooth holder comprises a tooth holder body and a tooth sleeve, wherein the tooth sleeve is tightly matched in a main hole in the tooth holder body, and the wall thickness of the tooth sleeve is within the range of 3-5 mm.
The hardness of the gear sleeve is between 58 and 62 HRC.
The tooth sleeve is a cup-shaped structural member with one closed end and the other open end, the opening of the tooth sleeve is arranged to be an outward flanging structure, the opening of the main hole of the tooth seat body is provided with a cylindrical counter bore, and the outward flanging structure is in interference fit with the cylindrical counter bore.
The outer wall of the gear sleeve is provided with an O-shaped ring mounting groove, an O-shaped ring is arranged in the O-shaped ring mounting groove, an oil hole is further formed in the gear seat body, an inner end opening of the oil hole is communicated with the main hole and is located on the inner side of the O-shaped ring, an outer end opening of the oil hole is formed in the outer surface of the gear seat body, a section of threaded hole is formed in an outer end opening of the oil hole, and the oil hole is plugged through a screwed plug in a use state.
An inner end opening of the oil hole is preferably provided on a bottom surface of the main hole, and the O-ring mounting groove is preferably near a root portion of the sleeve gear.
The compact easy-to-maintain toothholder can also include a spraying system, the spraying system includes a spraying water channel and a nozzle, the spraying water channel is opened in the toothholder body, and the nozzle is installed at one end opening part of the spraying water channel close to the mouth part of the main hole.
The spraying water channel comprises a water channel and a square groove which are communicated with each other from top to bottom, the opening of the square groove faces downwards, a section of threaded hole is formed in the top opening of the water channel, and the nozzle is in threaded connection with the top opening of the water channel.
The water inlet of the nozzle is preferably provided with a filter screen.
The angle between the direction of the outlet of the nozzle and the plane of the axis of the main bore is preferably between 20 and 30 degrees.
Welding gaps are formed in the periphery of the root of the tooth seat body, and the size of each gap is preferably not less than 10mm multiplied by 10 mm.
The invention has the beneficial effects that:
the invention adopts the small-outer-diameter, thin-wall and high-hardness gear sleeve to be tightly matched with the main hole of the gear seat body, so that on one hand, the external dimension of the gear seat body is greatly reduced, the occupation of the installation space of the gear seat on a roller is obviously reduced, on the other hand, the gear seat body and the gear sleeve are reliably connected, the rigidity and the strength of the formed assembly body are higher, the gear seat body is prevented from being directly impacted by cutting counter force, and the service life of the gear seat body is prolonged.
By integrating the spraying system on the tooth seat body, the installation space of the spraying system on the roller can be correspondingly reduced, and the saved installation space can be used for increasing the number of blades on the roller, so that the coal charging space and the coal charging rate of the roller are improved.
Through setting up tooth cover dismantlement system, can promote the tooth cover through suppressing for miniature hydro-cylinder and make it deviate from to the toothholder body and accomplish the dismantlement, consequently the dismantlement of tooth cover is maintained very conveniently, helps reducing cost of maintenance.
Drawings
FIG. 1 is a perspective view of one embodiment of the present invention;
fig. 2 is a cross-sectional view taken along line K-K of fig. 1.
Description of the drawings:
1. a tooth base body; 11. an oil hole; 12. a water channel; 13. a square groove; 2. a gear sleeve; 3, an O-shaped ring; 4. plugging by screwing; 5. and (4) a nozzle.
Detailed Description
The invention discloses a compact easy-maintenance tooth holder, which comprises a tooth holder body 1 and a tooth sleeve 2, wherein the tooth sleeve is tightly matched in a main hole on the tooth holder body, so that the tooth holder body and the tooth sleeve are more reliably connected, and the service life of the tooth holder body can be prolonged. The wall thickness of the gear sleeve is within the range of 3-5mm, the gear sleeve is a typical thin-wall gear sleeve, compared with the existing gear sleeve with the wall thickness of 8-10mm, the outer diameter of the gear sleeve is reduced by 1/3 approximately, and accordingly, the external dimension of the gear seat body is also greatly reduced. Because the height direction of the tooth seat body and the axial direction of the main hole form an acute angle, the reduction of the wall thickness of the tooth sleeve reduces the size of the tooth seat body in the radial direction of the main hole by about 10-20mm, and reduces the size in the height direction by more than 10 mm. The whole tooth holder structure is more compact, the welding installation of the tooth holder on the roller is facilitated, especially for the roller with the small diameter, the effects of saving the installation space and improving the cutting performance are more obvious.
The arrangement of the tooth sleeve enables the tooth holder body not to bear direct impact from the cutting tooth, so that the service life of the tooth holder is prolonged.
The hardness of the gear sleeve is 58-62HRC, so that the wear resistance is improved, the rigidity and the strength of an assembly body formed by the gear sleeve and the gear seat body are improved, the requirement on the gear seat body is correspondingly reduced, and the overall economy of the gear seat is improved.
The tooth sleeve is a cup-shaped structural part with one end closed and the other end open. In this embodiment, the mouth of the gear sleeve is provided with an outward flanging structure, the mouth of the main hole of the gear seat body is provided with a cylindrical counter bore, and the outward flanging structure is in interference fit with the cylindrical counter bore. The end surface of the opening of the gear sleeve is flush with the end surface of the opening of the main hole of the gear seat body.
An O-shaped ring mounting groove is preferably formed in the outer wall of the gear sleeve, and an O-shaped ring 3 is arranged in the O-shaped ring mounting groove. An oil hole 11 is further formed in the tooth holder body, an inner end opening of the oil hole is communicated with the main hole and is located on the inner side of the O-shaped ring, and an outer end opening of the oil hole is formed in the outer surface of the tooth holder body, namely on the rear side face of the upper portion of the tooth holder body in the embodiment. A section of threaded hole is formed in an opening at the outer end of the oil hole, and the threaded hole is plugged through a screwed plug 4 at ordinary times to prevent coal ash from entering the oil hole. And a micro oil cylinder is formed among the tooth seat body, the tooth sleeve and the O-shaped ring, and the oil hole is formed into an oil path communicated with the micro oil cylinder. The micro oil cylinder and the oil hole 11 form a gear sleeve dismounting system. When the gear sleeve needs to be disassembled, only the plug 4 is required to be removed, a pressure medium source (such as a high-pressure hydraulic pump) is connected with the outer end opening of the oil hole, the gear sleeve is pushed to be separated out of the gear seat body by pressing the micro oil cylinder, namely, the gear sleeve is expanded out, and the disassembly is completed, so that the disassembly and the maintenance of the gear sleeve are very convenient, and the maintenance cost is reduced.
In this embodiment, an inner end opening of the oil hole is preferably provided on a bottom surface of the main hole, and the O-ring mounting groove is preferably located near a root portion of the sleeve gear.
The compact easy-to-maintain toothholder can also include a spraying system, the spraying system includes a spraying water channel and a nozzle 5, the spraying water channel is opened in the toothholder body, the nozzle is installed at one end opening part of the spraying water channel close to the mouth part of the main hole.
The spraying water channel comprises a water channel 12 and a square groove 13 which are communicated with each other. Under the condition that the main hole is positioned at the upper part of the tooth seat body and the opening part of the main hole is positioned at the front side surface of the upper part of the tooth seat body, the water channel and the square groove are positioned at the lower part of the tooth seat body and are arranged one above the other, and the opening of the square groove faces downwards and is a water inlet of the spraying water channel. The top opening of the water channel is positioned on the front side surface of the lower part of the tooth seat body, the top opening of the water channel is a water outlet of the spraying water channel, and a section of threaded hole is formed in the water outlet and used for installing the nozzle 5. Through set up the spraying system on the tooth pedestal body, can correspondingly reduce the spraying system installation space on the cylinder, the space of saving can be used for increasing the quantity of blade on the cylinder, helps improving the coal charge space and the coal charge rate of cylinder.
The water inlet of the nozzle is preferably provided with a filter screen.
The exit direction of the nozzle is preferably at an angle (i.e. spray angle) of between 20 and 30 degrees to the plane of the axis of the main bore.
The tooth seat body is used as a main body of the tooth seat and needs to be welded and fixed on the roller body, welding gaps are arranged on the periphery of the root of the tooth seat body, and the size of each gap is preferably not less than 10mm multiplied by 10mm, so that the tooth seat body can be welded conveniently.
Claims (10)
1. A compact easy maintenance toothholder which characterized in that: the tooth socket comprises a tooth socket body and a tooth sleeve, wherein the tooth sleeve is tightly matched in a main hole in the tooth socket body, and the wall thickness of the tooth sleeve is within the range of 3-5 mm.
2. The compact easy-to-maintain toothholder of claim 1, wherein: the hardness of the gear sleeve is between 58 and 62 HRC.
3. The compact easy-to-maintain toothholder of claim 2, wherein: the tooth sleeve is a cup-shaped structural member with one closed end and the other open end, the opening of the tooth sleeve is arranged to be an outward flanging structure, the opening of the main hole of the tooth seat body is provided with a cylindrical counter bore, and the outward flanging structure is in interference fit with the cylindrical counter bore.
4. The compact easy-to-maintain toothholder of claim 1, 2 or 3, characterized in that: the outer wall of the gear sleeve is provided with an O-shaped ring mounting groove, an O-shaped ring is arranged in the O-shaped ring mounting groove, an oil hole is further formed in the gear seat body, an inner end opening of the oil hole is communicated with the main hole and is located on the inner side of the O-shaped ring, an outer end opening of the oil hole is formed in the outer surface of the gear seat body, a section of threaded hole is formed in an outer end opening of the oil hole, and the oil hole is plugged through a screwed plug in a use state.
5. The compact easy-to-maintain toothholder of claim 4, wherein: the inner end opening of the oil hole is formed in the bottom surface of the main hole, and the O-shaped ring mounting groove is close to the root of the gear sleeve.
6. The compact easy-to-maintain toothholder of claim 5, wherein: still include spraying system, spraying system includes spraying water course and nozzle, the spraying water course is seted up in the toothholder is internal, the nozzle is installed the spraying water course is close to the one end opening part of the oral area of main bore.
7. The compact easy-to-maintain toothholder of claim 6, wherein: the spraying water channel comprises a water channel and a square groove which are communicated with each other from top to bottom, the opening of the square groove faces downwards, a section of threaded hole is formed in the top opening of the water channel, and the nozzle is in threaded connection with the top opening of the water channel.
8. The compact easy-to-maintain toothholder of claim 6, wherein: and a filter screen is arranged at the water inlet of the nozzle.
9. The compact easy-to-maintain toothholder of claim 6, wherein: the angle between the outlet direction of the nozzle and the plane of the axis of the main hole is 20-30 degrees.
10. The compact easy-to-maintain toothholder of claim 6, wherein: welding gaps are formed in the periphery of the root of the tooth seat body, and the size of each gap is not smaller than 10mm multiplied by 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911062257.9A CN110700827A (en) | 2019-11-02 | 2019-11-02 | Compact easy-maintenance tooth holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911062257.9A CN110700827A (en) | 2019-11-02 | 2019-11-02 | Compact easy-maintenance tooth holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110700827A true CN110700827A (en) | 2020-01-17 |
Family
ID=69204055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911062257.9A Pending CN110700827A (en) | 2019-11-02 | 2019-11-02 | Compact easy-maintenance tooth holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110700827A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756798A (en) * | 2021-10-25 | 2021-12-07 | 天地上海采掘装备科技有限公司 | Cutter device of coal mining machine roller and anti-loosening method thereof |
-
2019
- 2019-11-02 CN CN201911062257.9A patent/CN110700827A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756798A (en) * | 2021-10-25 | 2021-12-07 | 天地上海采掘装备科技有限公司 | Cutter device of coal mining machine roller and anti-loosening method thereof |
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