CN219774074U - Center drill rod for raise boring machine - Google Patents
Center drill rod for raise boring machine Download PDFInfo
- Publication number
- CN219774074U CN219774074U CN202321317998.9U CN202321317998U CN219774074U CN 219774074 U CN219774074 U CN 219774074U CN 202321317998 U CN202321317998 U CN 202321317998U CN 219774074 U CN219774074 U CN 219774074U
- Authority
- CN
- China
- Prior art keywords
- rod
- rod body
- boring machine
- drill rod
- raise boring
- 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.)
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Links
- 238000003466 welding Methods 0.000 claims abstract description 26
- 238000005553 drilling Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a central drill rod for a raise boring machine, which comprises a rod body, wherein a plurality of base plates are fixed on the periphery of the rod body, chip removal channels are arranged between adjacent base plates, the base plates are axially arranged according to the rod body, slopes are arranged at the joints of two sides of the base plates and the rod body, and welding wires are deposited on the surfaces of the base plates through gas shielded welding to form a hardened welding layer. The utility model improves the load condition of the drill rod, prolongs the fatigue life of the drill rod, is convenient for discharging and cutting, and can be quickly replaced.
Description
Technical Field
The utility model relates to a center drill rod for a raise boring machine, and belongs to the technical field of mine exploration.
Background
The central drill rod of the raise boring machine is a special drill rod with external threads at the end part for connecting drilling and grinding facilities at the bottom end of a vertical shaft. The purpose of the workpiece is to raise or lower the drilling and grinding equipment, to connect other drill rods or tools, and to transmit the moment of energy required to break the rock. The workpiece must be able to withstand significant internal and external stresses, distortions, bending, stretching and vibrations. The connection is positioned on a section of drill pipe near the drilling and grinding facility and is used for stabilizing the drilling direction.
Due to the complex underground working condition, the common drill rod has short underground working life in the drilling process, and failure accidents often occur. In the conventional engineering, the whole system is formed by components such as a drill rod, a drill collar, a centralizer and the like, and the structure is complex and the components are numerous. The drill rod is stressed relatively complex in the use process and is subjected to constant and alternating loads. The outer Zhou Naimo part of the traditional center drill rod is welded by using alloy teeth, and a step is arranged between the wear-resisting part and the rod body, so that chip removal can be influenced. And the preparation period of the alloy teeth is long, so that the alloy teeth are difficult to quickly supplement in one step when the construction side needs to supplement the center drill rod.
Disclosure of Invention
The utility model aims to provide a central drill rod which improves the load condition of the drill rod, prolongs the fatigue life of the drill rod, is convenient to discharge and cut and can be quickly replaced in a supplementing way.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a center drilling rod for raise boring machine, includes the body of rod, the periphery of body of rod is fixed with a plurality of backing plate, is the chip removal passageway between the adjacent backing plate, and the backing plate is arranged according to body of rod axial, and the both sides of backing plate and body of rod junction have the slope, form the hardening weld layer after the surface of backing plate passes through gas shielded arc welding with the welding wire build-up welding.
Preferably, the device further comprises a loosening ring, wherein one end of the rod body is of a retracted external thread structure, and the loosening ring is sleeved on the rod body and is close to the external thread structure. The loosening ring ensures that when the external thread structure of the drill rod is connected with other drill rods, the other drill rods can be removed through the loosening ring under the condition of locking, so that the drill rod is convenient to detach.
Preferably, the device further comprises a lining, wherein the other end of the rod body is provided with a taper surface with a certain taper, and is sleeved with the lining. The bushing is a stress part in direct contact with the cutterhead base, so that the bushing is made of the same material as the cutterhead base, and the bushing is assembled, so that the bushing can be conveniently replaced after abrasion is guaranteed, and the cost is saved.
Preferably, the other end periphery of the rod body is provided with three uniformly distributed positioning pins near the end face. The positioning of the rod body and the cutter head base is ensured.
Preferably, the distances between the outer surfaces of the hardened welding layers of the plurality of backing plates and the center of the rod body are equal. The work piece is guaranteed to be stressed uniformly when the height of the hardened welding layer is guaranteed to be consistent.
By adopting the structure, the joint of the two sides of the base plate and the rod body is provided with the slope, so that the slope can ensure that chip removal can not be accumulated on the step between the base plate and the rod body. And the surface of the backing plate is subjected to gas shielded welding to form a hardening welding layer after welding wires are subjected to overlaying welding, so that the load condition of the drill rod can be improved, the fatigue life of the drill rod is prolonged, and after the hardening welding layer is worn, the replacement can be quickly carried out by directly performing gas shielded welding overlaying welding.
Drawings
FIG. 1 is a perspective view of the present utility model;
fig. 2 is an enlarged view of the section I of fig. 1.
Detailed Description
The utility model is described in further detail below with reference to examples given in the accompanying drawings.
Referring to fig. 1, a central drill rod for a raise boring machine comprises a rod body 1, wherein the rod body 1 is in a cylindrical shape, one end of the rod body 1 is in a retracted external thread structure and is used for connecting other drill rods, and a loosening ring 6 is sleeved on the rod body 1 and is close to the external thread structure. If other drilling rods are locked, the other drilling rods can be removed through the loosening ring, so that the drilling rod is convenient to detach. The other end of the rod body 1 is provided with a taper surface with a certain taper and is sleeved with a bushing 7. The bush 7 is a stress part which is in direct contact with the reamer head base, so the bush 7 is made of the same material as the reamer head base, and an assembly type design is adopted, so that after abrasion, the bush 7 can be conveniently replaced, and the cost is saved. The other end periphery of the rod body 1 is provided with three uniformly distributed positioning pins 8 near the end face. The positioning of the rod body 1 and the cutter head base is ensured.
Referring to fig. 2, a plurality of backing plates 2 are welded and fixed on the periphery of a rod body 1, in this embodiment, the number of the backing plates 2 is six, chip removal channels 3 are arranged between adjacent backing plates 2, the backing plates 2 are uniformly distributed according to the axial direction of the rod body 1, a slope 4 is formed at the joint of two sides of the backing plates 2 and the rod body 1 through welding, and the slope 4 can ensure smooth chip removal and can not be piled up. The surface of the backing plate 2 is subjected to gas shielded welding to build up welding wires, and then a hardened welding layer 5 is formed. And ensures that the distance between the outer surface of the hardened welding layer 5 of each backing plate 2 and the center of the rod body 1 is equal. The welding wire of the embodiment is an HS113 cobalt-based surfacing welding wire, and the hardness HRC of the surfacing layer can reach about sixty.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present utility model.
Claims (5)
1. The utility model provides a center drilling rod for raise boring machine which characterized in that: including body of rod (1), its characterized in that: a plurality of backing plates (2) are fixed on the periphery of the rod body (1), chip removal channels (3) are arranged between the adjacent backing plates (2), the backing plates (2) are axially distributed according to the rod body (1), slopes (4) are arranged at the joints of two sides of the backing plates (2) and the rod body (1), and a hardening welding layer (5) is formed after welding wires are deposited on the surfaces of the backing plates (2) through gas shielded welding.
2. The center drill rod for a raise boring machine according to claim 1, wherein: the novel telescopic rod further comprises a loosening ring (6), one end of the rod body (1) is of a retracted external thread structure, and the loosening ring (6) is sleeved on the rod body (1) and is close to the external thread structure.
3. The center drill rod for a raise boring machine according to claim 1, wherein: the novel telescopic rod further comprises a lining (7), wherein the other end of the rod body (1) is provided with a taper surface with a certain taper, and is sleeved with the lining (7).
4. The center drill rod for a raise boring machine according to claim 1, wherein: the other end periphery of the rod body (1) is provided with three uniformly distributed positioning pins (8) close to the end face.
5. The center drill rod for a raise boring machine according to claim 1, wherein: the outer surfaces of the hardened welding layers (5) of the plurality of backing plates (2) are equidistant from the center of the rod body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321317998.9U CN219774074U (en) | 2023-05-29 | 2023-05-29 | Center drill rod for raise boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321317998.9U CN219774074U (en) | 2023-05-29 | 2023-05-29 | Center drill rod for raise boring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219774074U true CN219774074U (en) | 2023-09-29 |
Family
ID=88135268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321317998.9U Active CN219774074U (en) | 2023-05-29 | 2023-05-29 | Center drill rod for raise boring machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219774074U (en) |
-
2023
- 2023-05-29 CN CN202321317998.9U patent/CN219774074U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |