CN117803389A - A tunneling pick and processing device thereof - Google Patents
A tunneling pick and processing device thereof Download PDFInfo
- Publication number
- CN117803389A CN117803389A CN202410053254.3A CN202410053254A CN117803389A CN 117803389 A CN117803389 A CN 117803389A CN 202410053254 A CN202410053254 A CN 202410053254A CN 117803389 A CN117803389 A CN 117803389A
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- pick
- wear
- mounting
- head
- cutting pick
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Classifications
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- 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
- E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
-
- 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
- E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
- E21C35/1835—Chemical composition or specific material
-
- 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
- E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
- E21C35/1837—Mining picks; Holders therefor with inserts or layers of wear-resisting material characterised by the shape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
本发明提供一种掘进截齿及其加工装置，属于掘进截齿领域。特别涉及一种端部融嵌有不同材质的截齿。包括：截齿，截齿齿尖对应设置有耐磨罩，耐磨罩融嵌置于截齿上，且高出截齿2mm‑5mm，耐磨罩为钨钴合金，截齿为球墨铸铁材质，通过在齿端部融嵌设置有高强度的耐磨罩，形成独立的切削部，避免整体结构的磨损，通过更换耐磨罩实现截齿座的延续使用，且相比焊接能够快速的进行分离。
The invention provides an excavation pick and a processing device thereof, belonging to the field of excavation picks. In particular, it relates to a pick whose end is fused and embedded with different materials. Includes: pick, with a wear-resistant cover corresponding to the pick tip. The wear-resistant cover is embedded on the pick and is 2mm-5mm higher than the pick. The wear-resistant cover is made of tungsten-cobalt alloy, and the pick is made of ductile iron. , a high-strength wear-resistant cover is fused into the tooth end to form an independent cutting part to avoid wear of the overall structure. By replacing the wear-resistant cover, the pick holder can be continued to be used, and it can be performed faster than welding. separation.
Description
Technical Field
The invention provides a tunneling cutting pick and a processing device thereof, and belongs to the field of tunneling cutting picks. In particular to a cutting pick with different materials fused and embedded at the end part.
Background
At present, a cutting pick of a hard rock heading machine is a main cutting tool on a cutting head of the heading machine, and is one of important parts for mining and tunnel engineering. The hard rock heading machine cutting pick adopts a mode of mainly impacting and turning, has the characteristic of large single impact energy, and because of the unique working principle of the hard rock heading machine, the performance of the hard alloy head becomes a key factor influencing the service life of the cutting pick, and the WC-Co hard alloy head is widely applied to the cutting pick due to higher hardness and good shock resistance, but when the hard rock is heading, the abrasion resistance of the WC-Co hard alloy head is insufficient, abrasion failure is easy to cause, the footage speed is slow, and the cutting pick is frequently replaced, so that the downtime is increased, and the heading efficiency is low.
Publication number CN115889918A discloses a brazing method for PDC cutting pick and PDC cutting pick, wherein the hard alloy of the head of PDC cutting pick is plated with Zn-Ni alloy layer in advance, the plated alloy layer and the brazing alloy metal cooperate to realize wetting of the brazing alloy part by the brazing alloy metal under the condition of lower temperature, the brazing rate of the brazing alloy part by the brazing alloy is improved, the residual thermal stress of the bonding interface between the PCD layer and the hard alloy substrate is reduced, the thermal damage degree of the PCD layer is reduced, and in the structure, the whole process is adopted to truly adjust the local characteristics, the whole service life is low, and the maintenance is unchanged.
Publication number CN115450621a discloses a metal ceramic cutting pick, which comprises a cutting pick body tooth head and a cutting pick body tooth handle, wherein a circular mounting plate matched with the cutting pick body tooth head is arranged on the cutting pick body tooth handle, and the cutting pick body tooth heads are all made of metal ceramic composite materials; the cutting pick body tooth head including cutting pick body and spiral tooth head, spiral tooth head set up on the periphery of cutting pick body, install the locating lever on the cutting pick body, cutting pick body tooth head installs on cutting pick body tooth handle, further forms an organic wholely, above-mentioned structure can not form the melt of the different materials of wearing and tearing portion and inlay the setting, whole life is short.
Disclosure of Invention
The invention provides a tunneling cutting pick and a processing device thereof, and provides a cutting pick structure and a processing device thereof, wherein the strength of the tunneling cutting pick is set by arranging a wear-resistant cover at the end of the cutting pick so as to prolong the service life. Simple structure and convenient use.
The invention discloses a tunneling cutting pick and a processing device thereof, which are realized in such a way that the tunneling cutting pick comprises:
the cutting pick is provided with a wear-resistant cover correspondingly at the tip of the cutting pick, the wear-resistant cover is embedded on the cutting pick and is 2mm-5mm higher than the cutting pick, the wear-resistant cover is made of tungsten-cobalt alloy, and the cutting pick is made of ductile cast iron.
Preferably: the cutting pick comprises a cutting pick box, wherein a mounting groove for mounting with a tunneling head is formed in the cutting pick box, and a cutting pick head arranged at the end part of the cutting pick box is axially identical to the cutting pick box;
wherein, pick head end is provided with the wear-resisting cover, and the wear-resisting cover corresponds to be arranged in pick head end, and extends along pick head lateral wall and is provided with multiunit bar structure, and bar structure corresponds the gomphosis and arranges in pick head surface.
Preferably: the pick box comprises a mounting main body, a column structure for mounting is arranged at the bottom of the mounting main body in an extending mode, a mounting groove is formed in the outer side wall of the column structure, a mounting hole is formed in the top end of the mounting main body and used for mounting and fixing the pick head, the mounting main body is in a circular truncated cone structure, and an outer slag discharging groove is formed in the side wall at equal angles;
wherein, the inner wall of the mounting hole at the end part of the mounting main body is provided with two groups of inner limit grooves;
wherein the outer slag discharging groove is spirally extended.
Preferably: the pick head comprises an internal tooth body, wherein the internal tooth body is provided with a column body corresponding to the mounting hole, the outer side wall of the column body is provided with a group of annular grooves, mounting rings are arranged in the annular grooves, the mounting rings are split rings, and the rotating surfaces of the mounting rings are arranged in a V shape;
the inner diameter of the mounting ring is positioned at the bottom of the annular groove and in the middle of the diameter of the opening, and the wall thickness and the outer diameter of the mounting ring are smaller than the diameter of the opening of the annular groove.
Preferably: the inner tooth body top is provided with the centrum structure, and the cone top position is provided with the recess, is convenient for extend along the recess and is equipped with multiunit slot, and foaming treatment is done to the slot bottom surface, and the surface forms mushroom head form structure, and the wear-resisting cover corresponds to be installed in the recess, and the edge sets up along the slot.
Preferably: the wear-resistant cover is characterized in that a cladding layer is arranged between the inner tooth body and the wear-resistant cover, the cladding layer is arranged on the surface of the inner tooth body in a corresponding thermal spraying manner, the cladding layer is thermally sprayed on the inner side of the wear-resistant cover, and the cladding layer is fused by heating after the wear-resistant cover and the inner tooth body are assembled so as to connect and fuse the wear-resistant cover and the inner tooth body.
Preferably: pick head is accomplished through fusion device preparation, fusion device is including the support frame that is used for transmission direction, the slip table of the fixed pick seat of installation and the processing apparatus who corresponds to arrange in on the support frame, and processing apparatus is the thermal spraying subassembly of thermal spraying cladding layer in proper order, installs the installation arm of wear-resisting cover for cladding layer fuses the heating cabinet to and carry out quick refrigerated cooling box, the support frame tip is provided with the discharge gate.
Preferably: the wear-resisting cover is provided with a plurality of groups of protective strips, and edges are arranged on two sides of each protective strip.
According to the tunneling cutting pick and the processing device thereof, the high-strength wear-resistant cover is arranged at the end part of the cutting pick in a fused and embedded mode, so that an independent cutting part is formed, abrasion of an integral structure is avoided, continuous use of the cutting pick holder is realized by replacing the wear-resistant cover, and the cutting pick holder can be separated more quickly than welding.
Drawings
Fig. 1 is a perspective view of a cutting pick of the present invention.
Fig. 2 is a perspective exploded view of a ripping pick of the present invention.
Fig. 3 is a schematic view of the construction of the cutting pick of the present invention.
Fig. 4 is a top view of a ripper pick of the present invention.
FIG. 5 is a schematic cross-sectional view of a top anti-wheelhead of the present invention.
Fig. 6 is a schematic view of the combination of the grater and the tooth end of the present invention.
Fig. 7 is a schematic view of a pick machining apparatus of the present invention.
In the accompanying drawings:
1. a pick box; 2. cutting pick head; 3. a wear-resistant cover; 4. a cladding layer; 5. a fusion device; 11. a mounting main body; 12. a mounting groove; 13. an inner limit groove; 14. an outer slag discharge groove; 21. an internal tooth body; 22. a mounting ring; 31. a guard bar; 51. a support frame; 52. a sliding table; 53. a thermal spray assembly; 54. installing a mechanical arm; 55. a heating box; 56. a cooling box; 57. and a discharge port.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The invention discloses a tunneling cutting pick and a processing device thereof, which are realized in such a way that the tunneling cutting pick comprises:
the cutting pick is characterized in that a wear-resistant cover 3 is correspondingly arranged on the cutting pick tip, the wear-resistant cover 3 is embedded on the cutting pick in a fusion mode, the wear-resistant cover 3 is 2mm-5mm higher than the cutting pick, the wear-resistant cover 3 is made of tungsten-cobalt alloy, and the cutting pick is made of nodular cast iron.
In an alternative embodiment: the cutting pick comprises a cutting pick box 1, wherein a mounting groove 12 for mounting with a tunneling head is formed in the cutting pick box 1, a cutting pick head 2 is arranged at the end part of the cutting pick box 1, and the cutting pick head 2 and the cutting pick box 1 are axially identical;
the end of the pick head 2 is provided with a wear-resistant cover 3, the wear-resistant cover 3 is correspondingly arranged at the end of the pick head 2, a plurality of groups of strip-shaped structures are arranged along the outer side wall of the pick head 2 in an extending mode, and the strip-shaped structures are correspondingly embedded on the surface of the pick head 2 (as shown in figures 1-2).
It is to be noted that the modification setting of the surface is carried out on the tunneling cutting pick by adopting the fusion embedding technology of different materials, so that the whole service life is prolonged.
In an alternative embodiment: the pick box 1 comprises a mounting main body 11, a column structure for mounting is arranged at the bottom of the mounting main body 11 in an extending manner, a mounting groove 12 is formed in the outer side wall of the column structure, a mounting hole is formed in the top end of the mounting main body 11 for mounting and fixing the pick head 2, the mounting main body 11 is in a circular truncated cone structure, and an outer slag discharging groove 14 is formed in the side wall at equal angles (as shown in fig. 4);
wherein, the inner wall of the mounting hole at the end part of the mounting main body 11 is provided with two groups of inner limit grooves 13;
wherein the outer slag notch 14 is spirally extended.
In an alternative embodiment: the pick head 2 comprises an internal tooth body 21, wherein the internal tooth body 21 is provided with a column body corresponding to a mounting hole, the outer side wall of the column body is provided with a group of annular grooves, mounting rings 22 are arranged in the annular grooves, the mounting rings 22 are open rings, and the rotating surface of the mounting rings 22 is arranged in a V shape (as shown in figure 3);
wherein the inner diameter of the mounting ring 22 is positioned at the bottom of the annular groove and in the middle of the diameter of the mouth, and the wall thickness and the outer diameter of the mounting ring 22 are smaller than the diameter of the mouth of the annular groove.
The inner tooth body 21 can be mounted and locked, and the mounting ring 22 is supported and limited in cooperation with the expansion of the mounting ring.
In an alternative embodiment: the top of the internal tooth body 21 is provided with a cone structure, the cone top is provided with a groove, a plurality of groups of grooves are arranged along the groove in a convenient extending way, the bottom surfaces of the grooves are subjected to foaming treatment, a mushroom head-shaped structure (shown in figure 6) is formed on the surface of the groove, the wear-resistant cover 3 is correspondingly arranged in the groove, and the edges of the wear-resistant cover are arranged along the grooves.
It is to be noted that, through the setting of mushroom head, improved the bonding strength of melt-blown, mushroom head is for in the shaping process, and the mould surface is provided with the foaming agent and forms.
In an alternative embodiment: the inner tooth body 21 and the wear-resisting cover 3 are provided with a cladding layer 4 in the middle, the cladding layer 4 is correspondingly and thermally sprayed on the surface of the inner tooth body 21, the cladding layer 4 is thermally sprayed on the inner side of the wear-resisting cover 3, and after the wear-resisting cover 3 and the inner tooth body 21 are assembled, the cladding layer 4 is formed by heating to be fused so as to connect and fuse the wear-resisting cover 3 and the inner tooth body 21.
The wear cap 3 and the internal gear body 21 are fused together with the cladding layer 4 as an intermediate layer, and the edges are partially replaced.
In an alternative embodiment: the pick head 2 is prepared and completed through a fusion device 5 (as shown in fig. 7), the fusion device 5 comprises a support frame 51 for conveying and guiding, a sliding table 52 for installing and fixing the pick holder 1, and a processing device correspondingly arranged on the support frame 51, wherein the processing device sequentially comprises a thermal spraying component 53 for thermally spraying the cladding layer 4, an installation mechanical arm 54 for installing the wear-resistant cover 3, a heating box 55 for fusion of the cladding layer 4, and a cooling box 56 for rapid cooling, and a discharge hole 57 is formed in the end part of the support frame 51.
It should be noted that, the mounting of the pick box 1 is fixed through the sliding table 52, and the pick box 1 is conveyed along the supporting frame 51, so that the pick box 1 sequentially passes through the thermal spraying component 53 to melt-spray the modified surface of the cladding layer 4, the wear-resistant cover 3 is mounted and buckled with the internal tooth body 21 through the mechanical arm 54, and the pick box is pressure heated through the heating box 55, so that the pick box is quickly cooled after fusion, and the bonding strength is improved.
In an alternative embodiment: the wear-resisting cover 3 is provided with a plurality of groups of protective strips 31, and edges are arranged on two sides of the protective strips 31.
Further, the cladding layer 4 is formed by cladding an aluminum-based powder containing tungsten of 10 to 15 specific gravity so as to be fused between the guard bar 31 and the internal tooth body 21.
By providing the wear-resistant cover 3 at the end of the internal tooth body 21, structural separation is formed, wear resistance is increased, and the service life of the tunneling pick is prolonged.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.
Claims (8)
1. A cutting pick, comprising:
the cutting pick is characterized in that a wear-resistant cover (3) is correspondingly arranged at the tip of the cutting pick, the wear-resistant cover (3) is arranged on the cutting pick in a fusion manner and is 2mm-5mm higher than the cutting pick, the wear-resistant cover (3) is made of tungsten-cobalt alloy, and the cutting pick is made of ductile cast iron.
2. A ripping pick as in claim 1, wherein: the cutting pick comprises a cutting pick box (1), wherein a mounting groove (12) for mounting with a tunneling head is formed in the cutting pick box (1), a cutting pick head (2) is arranged at the end part of the cutting pick box (1), and the cutting pick head (2) and the cutting pick box (1) are axially identical;
wherein, pick head (2) tip is provided with wear-resisting cover (3), and pick head (2) tip is arranged in to wear-resisting cover (3) correspondence, and extends along pick head (2) lateral wall and be provided with multiunit bar structure, and bar structure corresponds the gomphosis and arranges in pick head (2) surface.
3. A ripping pick as in claim 2, wherein: the pick box (1) comprises a mounting main body (11), a column structure for mounting is arranged at the bottom of the mounting main body (11) in an extending mode, a mounting groove (12) is formed in the outer side wall of the column structure, a mounting hole is formed in the top end of the mounting main body (11) and used for mounting and fixing the pick head (2), the mounting main body (11) is in a round platform structure, and an outer slag discharging groove (14) is formed in the side wall at the same angle;
wherein, the inner wall of the mounting hole at the end part of the mounting main body (11) is provided with two groups of inner limit grooves (13);
wherein the outer slag discharging groove (14) is spirally extended.
4. A ripping pick as in claim 3 wherein: the pick head (2) comprises an internal tooth body (21), wherein the internal tooth body (21) is provided with a cylinder corresponding to the mounting hole, the outer side wall of the cylinder is provided with a group of annular grooves, mounting rings (22) are arranged in the annular grooves, the mounting rings (22) are open rings, and the rotating surface of the mounting rings (22) is in a V-shaped arrangement;
the inner diameter of the mounting ring (22) is positioned at the bottom of the annular groove and in the middle of the diameter of the opening, and the wall thickness outer diameter of the mounting ring (22) is smaller than the diameter of the opening of the annular groove.
5. A ripping pick as in claim 4, wherein: the top of the internal tooth body (21) is provided with a cone structure, the cone top is provided with a groove, a plurality of groups of grooves are formed along the groove in a convenient extending mode, foaming treatment is carried out on the bottom surfaces of the grooves, a mushroom head-shaped structure is formed on the surface of the groove, the wear-resistant cover (3) is correspondingly arranged in the groove, and the edges of the wear-resistant cover are arranged along the grooves.
6. A ripping pick as in claim 5, wherein: the novel wear-resistant internal gear is characterized in that a cladding layer (4) is arranged between the internal gear body (21) and the wear-resistant cover (3), the cladding layer (4) is correspondingly and thermally sprayed on the surface of the internal gear body (21), the cladding layer (4) is thermally sprayed on the inner side of the wear-resistant cover (3), and after the wear-resistant cover (3) and the internal gear body (21) are assembled, the cladding layer (4) is formed by heating to be fused, so that the wear-resistant cover (3) and the internal gear body (21) are connected and fused.
7. A ripping pick as in claim 6, wherein: pick head (2) are accomplished through fusion device (5) preparation, fusion device (5) are including support frame (51) that are used for transmitting the direction, slip table (52) of installation fixed pick seat (1) and correspond the processing apparatus who arranges in on support frame (51), processing apparatus is thermal spraying subassembly (53) of thermal spraying cladding layer (4) in proper order, installation arm (54) of installation wear-resisting cover (3) for heating cabinet (55) that cladding layer (4) fused to and carry out quick refrigerated cooler bin (56), support frame (51) tip is provided with discharge gate (57).
8. A ripping pick as in claim 6, wherein: the wear-resisting cover (3) is provided with a plurality of groups of protective strips (31), and edges are arranged on two sides of the protective strips (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410053254.3A CN117803389B (en) | 2024-01-15 | 2024-01-15 | A tunneling pick and processing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410053254.3A CN117803389B (en) | 2024-01-15 | 2024-01-15 | A tunneling pick and processing device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117803389A true CN117803389A (en) | 2024-04-02 |
| CN117803389B CN117803389B (en) | 2024-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410053254.3A Active CN117803389B (en) | 2024-01-15 | 2024-01-15 | A tunneling pick and processing device thereof |
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| Country | Link |
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| CN (1) | CN117803389B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0413917A1 (en) * | 1989-08-23 | 1991-02-27 | Kennametal Inc. | Conical rotating cutting tool with wear shield bearing surface |
| CN202707055U (en) * | 2012-08-01 | 2013-01-30 | 赵学峰 | Rotor wing type wear-resisting pickaxe-shaped tooth |
| CN202937261U (en) * | 2012-11-08 | 2013-05-15 | 厦门厦工机械股份有限公司 | Integrated wear-proof cutting tooth for piling drilling tool |
| CN204060691U (en) * | 2014-06-04 | 2014-12-31 | 焦作市双力机械有限公司 | A kind of high-performance diamond composite cutter bit |
| CN204419183U (en) * | 2015-01-08 | 2015-06-24 | 赛迈斯（天津）数控工具有限公司 | Overall many alloy wear-resistings of a kind of band separation rubble revolve and dig pick |
| CN104963684A (en) * | 2015-07-29 | 2015-10-07 | 桂林星钻超硬材料有限公司 | Helmet-shaped polycrystalline diamond cutting tooth |
-
2024
- 2024-01-15 CN CN202410053254.3A patent/CN117803389B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0413917A1 (en) * | 1989-08-23 | 1991-02-27 | Kennametal Inc. | Conical rotating cutting tool with wear shield bearing surface |
| CN202707055U (en) * | 2012-08-01 | 2013-01-30 | 赵学峰 | Rotor wing type wear-resisting pickaxe-shaped tooth |
| CN202937261U (en) * | 2012-11-08 | 2013-05-15 | 厦门厦工机械股份有限公司 | Integrated wear-proof cutting tooth for piling drilling tool |
| CN204060691U (en) * | 2014-06-04 | 2014-12-31 | 焦作市双力机械有限公司 | A kind of high-performance diamond composite cutter bit |
| CN204419183U (en) * | 2015-01-08 | 2015-06-24 | 赛迈斯（天津）数控工具有限公司 | Overall many alloy wear-resistings of a kind of band separation rubble revolve and dig pick |
| CN104963684A (en) * | 2015-07-29 | 2015-10-07 | 桂林星钻超硬材料有限公司 | Helmet-shaped polycrystalline diamond cutting tooth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117803389B (en) | 2024-07-16 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20240402 Assignee: Yancheng Outewei Machinery Manufacturing Co.,Ltd. Assignor: Outewei (Jiangsu) Machinery Technology Co.,Ltd. Contract record no.: X2024980017838 Denomination of invention: A tunneling cutter and its processing device Granted publication date: 20240716 License type: Common License Record date: 20241010 |
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Assignee: Yancheng Outewei Machinery Manufacturing Co.,Ltd. Assignor: Outewei (Jiangsu) Machinery Technology Co.,Ltd. Contract record no.: X2024980017838 Date of cancellation: 20250704 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
| CP03 | Change of name, title or address |
Address after: 224000Jiangsu Province, Dafeng District, Dazhong Street, Yingsheng Road West Side, Wozhi North Side, Building 1, Building 2, Building 3, Building 4 Patentee after: Outewei (Jiangsu) Machinery Technology Co.,Ltd. Country or region after: China Address before: 224000 Jiangsu Province Yancheng City Dafeng District Dazhong Industrial Park Xingye Road 86.NO Patentee before: Outewei (Jiangsu) Machinery Technology Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |