CN202119643U - Drill and sampler - Google Patents
Drill and sampler Download PDFInfo
- Publication number
- CN202119643U CN202119643U CN2011202292576U CN201120229257U CN202119643U CN 202119643 U CN202119643 U CN 202119643U CN 2011202292576 U CN2011202292576 U CN 2011202292576U CN 201120229257 U CN201120229257 U CN 201120229257U CN 202119643 U CN202119643 U CN 202119643U
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- drill bit
- drill
- tooth
- main
- connecting rod
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- 239000003245 coal Substances 0.000 claims abstract description 88
- 238000005070 sampling Methods 0.000 claims description 21
- 210000004489 deciduous teeth Anatomy 0.000 claims 2
- 230000001066 destructive effect Effects 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 5
- 239000003818 cinder Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 7
- 239000004484 Briquette Substances 0.000 description 5
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a drill and a sampler, which solve the problem that the existing sampler can not obtain information of coal samples due to the fact that coal blocks are big and hard and freeze. The drill comprises a drill connection rod, a lateral tooth piece and a main drill. The lateral tooth piece is connected on the lateral face of the drill connection rod, and comprises lateral teeth for cutting the coal blocks from the lateral side. The main drill is connected at the bottom end of the drill connection rod, and comprises downward main teeth, and the main teeth comprise main tooth blades. Due to the fact that the drill comprises the lateral tooth piece and the main drill, during collection of coal samples, not only the main teeth of the main drill can exert static pressure on the coal samples to be collected on contact faces, but also the lateral teeth of the lateral tooth piece can exert lateral rotation cutting force on the coal samples to be collected. Therefore, destructive force on the coal samples to be collected is increased, collecting of the coal samples in big coal blocks, hard blocks and frozen coal blocks is facilitated, comprehensiveness of coal sample collecting and accuracy of obtained coal samples are guaranteed, and accordingly quality of coal as received can be accurately obtained.
Description
Technical Field
The utility model relates to a coal acquisition turns round technical field, especially relates to a drill bit and sample thief.
Background
At present, when coal entering a plant such as thermal power, petrochemical industry and the like is mechanically sampled, when a sampler encounters a large coal block and coal gangue, because a drill bit of the sampler can only extrude the large coal block and the coal block with higher hardness, representative coal samples in the large coal block and the coal block with higher hardness cannot be collected, an analysis structure obtained aiming at the collected coal samples is incomplete, and the quality of the coal entering the plant cannot be accurately reflected.
In addition, when the external environment temperature is low, the icing phenomenon can occur on the surface of the coal in the transportation process, and at the moment, the sampler cannot be adopted when the iced coal enters the plant, so that the information of the coal sample cannot be accurately acquired, and the quality of the coal entering the plant cannot be accurately acquired.
SUMMERY OF THE UTILITY MODEL
The utility model provides a drill bit and sample thief for solve current sample thief because the coal cinder is big, the coal cinder is hard and the coal cinder freezes, and the problem of the information of unable accurate acquisition coal appearance.
The utility model provides a drill bit, the drill bit includes: a drill connecting rod, a side blade and a main drill;
the drill bit connecting rod comprises a first connecting rod and a second connecting rod, wherein the first connecting rod is a cylinder, the bottom end of the first connecting rod is connected with the top end of the second connecting rod, and the cross section of the second connecting rod is a regular polygon;
the main drill bit comprises a main tooth column and main teeth, the top end of the main tooth column is connected to the bottom end of the second connecting rod, the bottom end of the main tooth column is connected with the main teeth, and the main teeth are downward and comprise main tooth edges;
the side blade comprises a side tooth seat and side teeth, wherein one end of the side tooth seat is connected to the side face of the second connecting rod, the other end of the side tooth seat is connected with the side teeth, the side teeth comprise side tooth edges, and the side teeth cut coal blocks from the side faces.
The side toothholder includes: the first connecting end and the second connecting end are connected with each other;
the side face of one end of the first connecting end is welded on the side face of the second connecting rod, a certain included angle is formed between the welded side tooth holder and the longitudinal center line of the second connecting rod, and the other end of the first connecting end is connected with the second connecting end;
the other end of the second connecting end is provided with a slot along the width direction of the second connecting end, the thickness of the slot is matched with that of the side tooth, and the side tooth is connected in the side tooth seat through the slot.
And each side tooth seat is welded at the same height of different side surfaces of the second connecting rod or at the corresponding positions with different heights.
The side teeth include: a connecting end and a tooth piece end; wherein,
the cross section of the connecting end is rectangular, and the connecting end is positioned in the groove of the side tooth holder;
the cross section of the tooth piece end is rectangular, and the tooth piece end and the connecting end are connected to form a certain included angle which is larger than 90 degrees.
Preferably, the included angle is 105 degrees.
The side teeth further include: a cutting edge on the side flank.
Preferably, the chamfer of the cutting edge is 55 degrees.
The main teeth are triangular pyramids, and each main tooth edge of the main teeth is embedded with a hard alloy blade.
The utility model provides a sample thief including above-mentioned drill bit, the sample thief still includes: the device comprises a spiral drill rod, a drill bit connecting seat and a sampling cylinder; wherein,
the sampling cylinder is a hollow cylinder;
the spiral drill rod is positioned in the sampling cylinder, one end of the spiral drill rod is connected with a motor, the spiral drill rod comprises a drill rod and a rotating blade connected to the outer side of the drill rod, the rotating blade is in a spiral shape, and the rotating blade is connected to the outer side of the drill rod along the length direction of the drill rod;
one end of the drill bit connecting seat is connected to the other end of the spiral drill rod, the other end of the drill bit connecting seat is connected with the drill bit, and after connection, the side teeth of the drill bit are located outside the sampling cylinder.
The drill bit connecting seat is connected with the drill bit through a bolt, a threaded hole formed in the other end of the drill bit connecting seat and a threaded hole formed in a first connecting rod of the drill bit connecting rod.
The utility model provides a drill bit and sample thief, this drill bit includes: the drill bit connecting rod, the side tooth piece and the main drill bit; the side tooth piece is connected on the side face of the drill bit connecting rod and comprises a side tooth for cutting coal blocks from the side face, the main drill bit is connected at the bottom end of the drill bit connecting rod and comprises a downward main tooth, and the main tooth comprises a main tooth edge. Because the utility model discloses in this drill bit includes side blade and main drill bit, consequently, when carrying out the coal sample collection, not only the main tooth of main drill bit can be treated the coal sample of collection and applys the static pressure on the contact surface, the side tooth of side blade can also be treated the coal sample of collection and applys the rotatory cutting force of side direction, cause the destructive power increase on the coal sample of treating the collection, be convenient for carry on the big coal cinder, the collection of coal sample in hard coal cinder and the coal briquette that freezes, can guarantee the comprehensiveness of coal sample collection, and the accuracy of the coal sample who obtains, thereby the quality of knowing the coal of entering the factory that can be accurate.
Drawings
Fig. 1 is a perspective view of the drill bit provided by the present invention;
FIG. 2 is a front view of the main tooth of the present invention after being connected to the drill connecting rod;
fig. 3 is a schematic structural diagram of the sampler provided by the present invention.
Detailed Description
The utility model discloses a coal sample's that effectual improvement was acquireed comprehensiveness guarantees the accuracy of the coal sample quality information who acquires, provides a drill bit and contains the sample thief of this drill bit.
The present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a perspective view of the drill bit provided by the present invention, and as can be seen from fig. 1, the drill bit includes: the drill bit connecting rod 1, the side blades and the main drill bit; wherein,
the drill bit connecting rod 1 comprises a first connecting rod 11 and a second connecting rod 12, wherein the first connecting rod 11 is a cylinder, the bottom end of the first connecting rod 11 is connected with the top end of the second connecting rod 12, and the cross section of the second connecting rod 12 is a regular polygon;
the main drill bit comprises a main tooth column 9 and a main tooth 6, the top end of the main tooth column 9 is connected to the bottom end of the second connecting rod 12, the bottom end of the main tooth column 9 is connected to the main tooth 6, and the main tooth 6 faces downwards and comprises a main tooth edge;
the side blade comprises a side tooth holder 3 and a side tooth 5, wherein one end of the side tooth holder 3 is connected to the side surface of the second connecting rod 12, the other end of the side tooth holder is connected with the side tooth 5, the side tooth 5 comprises a side tooth edge, and the side tooth 5 cuts coal blocks from the side surface.
As shown in fig. 1, the first connection end 11 has a threaded hole 2 formed along a diameter of the first connection end 11 for connection with another component of the sampler.
Because the utility model discloses in this drill bit includes side blade and main drill bit, consequently, when carrying out the coal sample collection, not only the main tooth of main drill bit can be treated the coal sample of collection and applys the static pressure on the contact surface, the side tooth of side blade can also be treated the coal sample of collection and applys the rotatory cutting force of side direction, cause the destructive power increase on the coal sample of treating the collection, be convenient for carry on the big coal cinder, the collection of coal sample in hard coal cinder and the coal briquette that freezes, can guarantee the comprehensiveness of coal sample collection, and the accuracy of the coal sample who obtains, thereby the quality of knowing the coal of entering the factory that can be accurate.
According to fig. 1, the side toothholder 3 comprises: a first connection end 31 and a second connection end 32 connected to each other;
the side surface of one end of the first connecting end 31 is welded on the side surface of the second connecting rod 12, a certain included angle is formed between the welded side tooth holder 3 and the longitudinal center line of the second connecting rod 12, and the other end of the first connecting end 31 is connected with the second connecting end 32;
the other end of the second connecting end 32 is provided with a slot 321 along the width direction of the second connecting end 32, the thickness of the slot 321 is matched with that of the side tooth 5, and the side tooth 5 is connected in the side tooth holder 2 through the slot 321.
In order to secure the stability of the side tooth connection, a screw hole is formed in the second connection end 32 of the side tooth holder, and the side tooth 5 is fixed in the groove 321 of the second connection end 32 by the hexagon socket head cap screw 4.
As shown in fig. 1, the side block 3 has an irregular shape, and the side block may have any shape as long as it can ensure that the side surface of the side block 3 can be welded on the drill connecting rod, and the side block may have a structure including a slot for fixing the side teeth.
In addition, in order to connect the side blades to the second connecting rod, the side surface of one end of the side tooth seat of the side blade is welded to the side surface of the second connecting rod, the cross section of the second connecting rod is a regular polygon, such as a regular triangle, a square, a regular pentagon, a regular hexagon, etc., when the corresponding side blade is welded to each side surface of the second connecting rod, the number of the welded side blades is the same as the number of the side surfaces included in the second connecting rod, for example, when the second connecting rod is a regular triangular prism, the number of the side blades welded to the second connecting rod is three, or the side blades are welded to part of the side surfaces of the second connecting rod, for example, when the cross section of the second connecting rod is a regular hexagon, the number of the six side surfaces is 1 to 6, the side blades can be welded to the side surfaces numbered 1, 3, 5, or the number of the six side blades is 1 to 6, respectively, 4. 6 side blades are welded on the side surfaces.
Since the side toothholders of different side blades are welded on different sides of the second connecting rod, the welding height of each side toothholder on different sides of the second connecting rod can be the same or different. Each welded side tooth seat forms a certain included angle with the longitudinal center line of the second connecting rod, the angle of the included angle is 25 degrees, and the welded side tooth seats are uniformly arranged along the peripheral direction of the drill connecting rod. And when different side toothholders are welded on different heights of the side surface of the second connecting rod, the side toothholders are staggered and uniformly arranged along the peripheral direction of the drill connecting rod.
As can be seen from fig. 1, the side teeth 5 include: a connecting end 51 and a blade end 52; wherein,
the cross section of the connecting end 51 is rectangular, and the connecting end 51 is positioned in the slot 321 of the side toothholder 3;
the cross section of the blade end 52 is rectangular, and the blade end 52 and the connecting end 51 are connected to form a certain included angle, namely a back inclination angle, wherein the included angle is a value greater than 90 degrees.
Preferably, the included angle is 105 degrees.
The utility model discloses in order to improve cutting force and the wear-resisting effect when the side tooth is rotatory, side tooth 5 still includes: a cutting edge 8 on the side flank of said blade end 52. The cutting edge 8 is a build-up layer formed by build-up welding, and the chamfer angle of the cutting edge 8 is 55 degrees, that is, the side edge angle thereof is 55 degrees.
Because the utility model discloses well side blade includes the side tooth to it has the cutting edge to inlay on the side tooth sword of this side tooth, consequently can improve the crushing effect and the wear-resisting effect of side tooth, carries out supplementary breakage to big coal cinder, hard coal cinder and the coal that freezes when being favorable to the sampling.
Fig. 2 is a front view of the main drill bit of the present invention connected to the drill connecting rod, and as shown in fig. 2, the main drill bit 6 includes a main tooth post 61 and a main tooth 62;
wherein, one end of the main tooth post 61 is connected with the bottom end of the second connecting rod 12;
the main tooth 62 is connected to the other end of the main tooth column 61, the main tooth 62 is in a triangular pyramid shape, each main tooth edge corresponds to one edge of the triangular pyramid, and a hard alloy blade 7 is embedded in each main tooth edge of the main tooth 62.
The utility model provides a main tooth is triangular pyramid, and each pyramid is a main serrated edge, and in order to improve the crushing effect of drill bit, all inlay on every main serrated edge has carbide blade 7 to can make the quick coal seam deep that enters into of main tooth. In fig. 2, the main tooth column is a cylinder, but it is a matter of course that the main tooth column may have other shapes, for example, a triangular prism corresponding to the base of the triangular pyramid of the main tooth, and when the main tooth column is a triangular prism, a cemented carbide insert may be mounted on each ridge of the main tooth column, as shown in fig. 1.
Because this second connecting rod is for can be regular triangular prism or square, or the cross section is other regular polygon's cylinder, consequently when it is connected with main drill bit, this main drill bit includes main tooth post, this main tooth post is the cylinder, consequently in the bottom of this second link, open along the length direction of second connecting rod has with main tooth post complex hole, and in order to guarantee the reliability of connecting, it has the screw hole along the width direction of second connecting rod to open on this hole, and it has supporting screw hole to open on this main tooth post. The main tooth column is connected in the bottom end opening of the second connecting rod, and the main tooth column and the second connecting rod are fixed through the bolt, the threaded hole formed in the main tooth column and the threaded hole formed in the width direction of the second connecting rod.
Fig. 3 is a schematic structural diagram of the sampler provided by the present invention, and according to fig. 3, the sampler comprises the above-mentioned drill bit, as well as the auger stem, the drill bit connecting seat 10 and the sampling cylinder 13; wherein,
the sampling cylinder 13 is a hollow cylinder, for example, the sampling cylinder can be a steel pipe;
the auger stem is positioned inside the sampling cylinder 13, one end of the auger stem is connected with a motor (not shown in fig. 4), the auger stem comprises a drill stem 11 and a rotating blade 12, wherein the drill stem 11 is in a rod shape, the rotating blade 12 is in a spiral shape, and the rotating blade 12 is connected to the outer side of the drill stem 11 along the length direction of the drill stem 11;
one end of the drill bit connecting seat 10 is connected to the other end of the spiral drill rod, the other end of the drill bit connecting seat 10 is connected with a drill bit, and after connection, side teeth of the drill bit are located outside the sampling cylinder and are in butt joint with the bottom end of the rotating blade.
The utility model discloses in order to realize being connected of drill bit and drill bit connecting seat, on the head rod of drill bit connecting rod 1, open threaded hole on the diameter direction of head rod to open threaded hole at the other end of drill bit connecting seat 10, open threaded hole that has through bolt 9, the other end of drill bit connecting seat and open threaded hole on the head rod of drill bit connecting rod, connect drill bit connecting seat and this drill bit. The side tooth seat 3 in the side blade of the drill bit is butted with the bottom end of the rotating blade 12, the side tooth seat 3 is connected with the side tooth 5 through a hexagon socket head cap screw, the side tooth 5 is positioned outside the sampling cylinder 13, a cutting edge 8 is embedded on a side tooth edge of the side tooth 5, a coal briquette is cut from the side direction through the side tooth edge of the side tooth, and the cutting edge is embedded on the side tooth edge, so that the crushing effect and the wear resistance of the coal briquette can be improved.
The bottom end of the second connecting rod of the drill connecting rod 1 is connected with a main drill 6, a main tooth column of the main drill 6 is connected with the bottom of the second connecting end, and a main tooth of the main drill is connected with the bottom end of the main tooth column and faces downwards. In order to increase the crushing effect of the main teeth in the main bit and the wear resistance, a carbide insert 7 is embedded on each main tooth edge of the main teeth.
Because pass through bolted connection between the first connecting rod of drill bit and the drill bit connecting seat, consequently when the drill bit part breaks down, can make things convenient for the dismantlement of drill bit through the bolt. Meanwhile, on the drill bit, the side teeth and the side tooth seats as well as the main tooth column of the main drill bit and the second connecting rod are connected through bolts, so that the side teeth or the main teeth on the drill bit can be conveniently replaced when the side teeth or the main teeth break down.
The utility model provides a sample thief when sampling, the drill bit when this sample thief runs into the bold coal, or harder coal cinder, for example during the gangue, or when meetting the frozen coal cinder, and when sampling other coal cinder, the main drill bit of drill bit is under the rotary action of the coal cinder of waiting to sample and auger stem, its main tooth sword when exerting the static pressure on the contact surface with the coal cinder, rotary cutting force is still exerted to it, the destructive stress that the coal cinder received under two power of action increases, thereby produce tiny crackle, and increase along with time, this tiny crackle can the quick crack become big crackle, and then the breakage, and meanwhile, certain supplementary crushing effect is also played to three side tooth, thereby improve the crushing efficiency, improve the accuracy of sampling.
When the sampling device is used, the side tooth seat of the drill bit is in butt joint with the rotating blade on the spiral drill rod, so that when sampling is carried out, the side tooth can crush a coal sample and can rapidly guide the coal sample into the sampling cylinder, and the coal sample is convenient to collect.
The utility model provides a drill bit and sample thief, this drill bit includes: the drill bit connecting rod, the side tooth piece and the main drill bit; the side tooth piece is connected on the side face of the drill bit connecting rod and comprises a side tooth for cutting coal blocks from the side face, the main drill bit is connected at the bottom end of the drill bit connecting rod and comprises a downward main tooth, and the main tooth comprises a main tooth edge. Because the utility model discloses in this drill bit includes side blade and main drill bit, consequently, when carrying out the coal sample collection, not only the main tooth of main drill bit can be treated the coal sample of collection and applys the static pressure on the contact surface, the side tooth of side blade can also be treated the coal sample of collection and applys the rotatory cutting force of side direction, cause the destructive power increase on the coal sample of treating the collection, be convenient for carry on the big coal cinder, the collection of coal sample in hard coal cinder and the coal briquette that freezes, can guarantee the comprehensiveness of coal sample collection, and the accuracy of the coal sample who obtains, thereby the quality of knowing the coal of entering the factory that can be accurate.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A drill bit, characterized in that the drill bit comprises: a drill connecting rod, a side blade and a main drill;
the drill bit connecting rod comprises a first connecting rod and a second connecting rod, wherein the first connecting rod is a cylinder, the bottom end of the first connecting rod is connected with the top end of the second connecting rod, and the cross section of the second connecting rod is a regular polygon;
the main drill bit comprises a main tooth column and main teeth, the top end of the main tooth column is connected to the bottom end of the second connecting rod, the bottom end of the main tooth column is connected with the main teeth, and the main teeth are downward and comprise main tooth edges;
the side blade comprises a side tooth seat and side teeth, wherein one end of the side tooth seat is connected to the side face of the second connecting rod, the other end of the side tooth seat is connected with the side teeth, the side teeth comprise side tooth edges, and the side teeth cut coal blocks from the side faces.
2. The drill bit of claim 1, wherein the side block comprises: the first connecting end and the second connecting end are connected with each other;
the side face of one end of the first connecting end is welded on the side face of the second connecting rod, a certain included angle is formed between the welded side tooth holder and the longitudinal center line of the second connecting rod, and the other end of the first connecting end is connected with the second connecting end;
the other end of the second connecting end is provided with a slot along the width direction of the second connecting end, the thickness of the slot is matched with that of the side tooth, and the side tooth is connected in the side tooth seat through the slot.
3. The drill bit of claim 2, wherein each side block is welded to a different side of the second connecting rod at the same height or at a different height.
4. The drill bit of claim 1 or 2, wherein the side teeth comprise: a connecting end and a tooth piece end; wherein,
the cross section of the connecting end is rectangular, and the connecting end is positioned in the groove of the side tooth holder;
the cross section of the tooth piece end is rectangular, and the tooth piece end and the connecting end are connected to form a certain included angle which is larger than 90 degrees.
5. The drill bit of claim 4, wherein the included angle is 105 degrees.
6. The drill bit of claim 4, wherein the side teeth further comprise: a cutting edge on the side flank.
7. The drill bit of claim 6, wherein the chamfer of the cutting edge is 55 degrees.
8. The drill bit of claim 1, wherein the primary teeth are triangular pyramidal in shape with carbide inserts embedded in each major tooth edge of the primary teeth.
9. A sampler comprising a drill bit according to any one of claims 1 to 8, the sampler further comprising: the device comprises a spiral drill rod, a drill bit connecting seat and a sampling cylinder; wherein,
the sampling cylinder is a hollow cylinder;
the spiral drill rod is positioned in the sampling cylinder, one end of the spiral drill rod is connected with a motor, the spiral drill rod comprises a drill rod and a rotating blade connected to the outer side of the drill rod, the rotating blade is in a spiral shape, and the rotating blade is connected to the outer side of the drill rod along the length direction of the drill rod;
one end of the drill bit connecting seat is connected to the other end of the spiral drill rod, the other end of the drill bit connecting seat is connected with the drill bit, and after connection, the side teeth of the drill bit are located outside the sampling cylinder.
10. The sampler of claim 9, wherein the drill bit connecting seat has a threaded hole formed at the other end thereof for connecting the drill bit connecting seat and the drill bit by means of a bolt, a threaded hole formed at the other end of the drill bit connecting seat, and a threaded hole formed in the first connecting rod of the drill bit connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202292576U CN202119643U (en) | 2011-06-30 | 2011-06-30 | Drill and sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202292576U CN202119643U (en) | 2011-06-30 | 2011-06-30 | Drill and sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202119643U true CN202119643U (en) | 2012-01-18 |
Family
ID=45460698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202292576U Expired - Lifetime CN202119643U (en) | 2011-06-30 | 2011-06-30 | Drill and sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202119643U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251746A (en) * | 2011-06-30 | 2011-11-23 | 中国神华能源股份有限公司 | Drill bit and sampling device |
| CN103543034A (en) * | 2013-11-06 | 2014-01-29 | 太仓浩湖五金制品有限公司 | Material drilling device capable of rapidly drilling coal stone detection sample for detection |
| CN107472937A (en) * | 2017-08-28 | 2017-12-15 | 天府重工有限公司 | A kind of open-top car transporting bulk material freezes the clear car method of end-dump car and its device |
| CN111890505A (en) * | 2020-09-01 | 2020-11-06 | 河南工业大学 | Watermelon grain and coconut tree peeling machine |
-
2011
- 2011-06-30 CN CN2011202292576U patent/CN202119643U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251746A (en) * | 2011-06-30 | 2011-11-23 | 中国神华能源股份有限公司 | Drill bit and sampling device |
| CN102251746B (en) * | 2011-06-30 | 2013-11-06 | 中国神华能源股份有限公司 | Drill bit and sampling device |
| CN103543034A (en) * | 2013-11-06 | 2014-01-29 | 太仓浩湖五金制品有限公司 | Material drilling device capable of rapidly drilling coal stone detection sample for detection |
| CN107472937A (en) * | 2017-08-28 | 2017-12-15 | 天府重工有限公司 | A kind of open-top car transporting bulk material freezes the clear car method of end-dump car and its device |
| CN107472937B (en) * | 2017-08-28 | 2019-08-02 | 天府重工有限公司 | A kind of open-top car transporting bulk material freezes the clear vehicle method and device thereof of end-dump car |
| CN111890505A (en) * | 2020-09-01 | 2020-11-06 | 河南工业大学 | Watermelon grain and coconut tree peeling machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120118 Effective date of abandoning: 20131106 |
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| RGAV | Abandon patent right to avoid regrant |