CN117569744B - Combined cutterhead and raise boring machine - Google Patents
Combined cutterhead and raise boring machine Download PDFInfo
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- CN117569744B CN117569744B CN202410078332.5A CN202410078332A CN117569744B CN 117569744 B CN117569744 B CN 117569744B CN 202410078332 A CN202410078332 A CN 202410078332A CN 117569744 B CN117569744 B CN 117569744B
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000010008 shearing Methods 0.000 description 10
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005065 mining Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The invention discloses a combined cutterhead and a raise boring machine, wherein the combined cutterhead comprises: the central box body comprises a first connecting surface and a second connecting surface, and the first connecting surface and the second connecting surface are adjacently arranged; the first connecting surface is provided with a clamping groove, and the second connecting surface is provided with a mounting hole; the tool rest is provided with an embedded structure and a torsion-resistant pin shaft, the embedded structure is arranged in the clamping groove, and the torsion-resistant pin shaft is arranged in the mounting hole in a penetrating manner; the wedge block is arranged in the clamping groove and is propped against the embedded structure; the wedge block is used for pushing the embedded structure to be abutted against the groove wall of the clamping groove; and the connecting piece is used for connecting the tool rest and the central box body. The raise boring machine comprises the combined cutterhead. The combined cutterhead for the raise boring machine can meet the strength requirement required by the large-diameter deep raise boring machine reaming operation, and further ensures that the reaming operation is stably carried out.
Description
Technical Field
The invention relates to the technical field of mining machinery, in particular to a combined cutterhead and a raise boring machine.
Background
As mining progresses gradually toward deeper underground, mining processes and methods change constantly, and the development of modern mines is pressing to demand large diameter deep raise heading equipment. When the raise boring machine performs reaming operation, the cutter frame of the cutter head can bear impact, extrusion and shearing loads under the dual actions of rotation and back lifting, so that the reliability of the cutter frame is required to be effectively ensured in the reaming operation. The existing cutterhead at present comprises a combined cutterhead and an integral cutterhead, a tool rest of the combined cutterhead is connected with a central box body only through bolts and clamping keys, the strength requirement required by reaming operation of a large-diameter deep raise boring machine cannot be met, and the integral large-diameter cutterhead cannot enter a cage and a chamber.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the combined cutterhead which can meet the strength requirement required by reaming operation of a large-diameter deep raise boring machine, and further ensure that the reaming operation is stably carried out.
The invention also provides a raise boring machine with the combined cutterhead.
According to an embodiment of the first aspect of the present invention, a combination cutterhead includes:
the central box body comprises a first connecting surface and a second connecting surface, and the first connecting surface and the second connecting surface are adjacently arranged; the first connecting surface is provided with a clamping groove, and the second connecting surface is provided with a mounting hole;
the tool rest is provided with an embedded structure and a torsion-resistant pin shaft, the embedded structure is arranged in the clamping groove, and the torsion-resistant pin shaft is arranged in the mounting hole in a penetrating manner;
the wedge block is arranged in the clamping groove and is propped against the embedded structure; the wedge block is used for pushing the embedded structure to be abutted against the groove wall of the clamping groove;
and the connecting piece is used for connecting the tool rest and the central box body.
The combined cutterhead provided by the embodiment of the invention has at least the following beneficial effects:
the wedge blocks are arranged to push the embedded structure to be abutted against the groove walls of the clamping grooves, so that the gap between the tool rest and the joint of the central box body is effectively eliminated, and the stability and the reliability of the connection of the tool rest and the central box body are further improved; the torsional pin shaft is arranged on the tool rest, and the mounting hole for the torsional pin shaft to pass through is arranged on the central box body, so that the torsional resistance and the shearing resistance of the tool rest are effectively improved, the strength requirement on machining the large-diameter deep courtyard tool rest is met, and the stable operation of reaming operation is ensured.
According to some embodiments of the invention, the clamping groove is provided with a first groove wall and a second groove wall which are arranged oppositely, and the first groove wall and the second groove wall are arranged vertically; the embedded structure is propped against the first groove wall, and the wedge block is propped against the second groove wall.
According to some embodiments of the invention, the embedded structure is provided with a first abutment surface, the wedge is provided with a second abutment surface matched with the first abutment surface, and the first abutment surface abuts against the second abutment surface; the first abutting surface is obliquely arranged.
According to some embodiments of the invention, the wedge is connected to the bottom of the clamping groove by a fastener.
According to some embodiments of the invention, the torsion pin is interference fit with the mounting hole.
According to some embodiments of the invention, the tool holder further comprises a mounting plate, the torque pin being connected to the tool holder by the mounting plate.
According to some embodiments of the invention, the outer periphery of the fixed plate is connected to the tool holder, and the center position of the fixed plate is connected to the torsion pin.
According to some embodiments of the invention, the fixing plate is circular; the fixing plate is connected with the torsion pin shaft through a plurality of first bolts, the fixing plate is connected with the tool rest through a plurality of second bolts, and the second bolts are uniformly arranged at intervals around the circumference on the periphery of the torsion pin shaft.
According to some embodiments of the invention, the plurality of connectors are arranged in a plurality; the torsion pin shafts are arranged at the center positions of the connecting pieces, and the connecting pieces are connected with the second connecting surfaces.
According to some embodiments of the invention, the support roller is rotatably mounted on the end of the tool rest away from the central box body around the axis of the support roller, and the support roller part extends out of the tool rest.
An embodiment of a raise boring machine according to the second aspect of the invention comprises a combination cutterhead as described above.
According to the raise boring machine, due to the fact that the raise boring machine comprises the combined cutterhead, at least all beneficial effects of the combined cutterhead are achieved; the combined cutterhead pushes the embedded structure to be abutted against the groove wall of the clamping groove by arranging the wedge blocks, so that the gap between the tool rest and the joint of the central box body is effectively eliminated, and the stability and the reliability of the connection of the tool rest and the central box body are further improved; the torsional pin shaft is arranged on the tool rest, and the mounting hole for the torsional pin shaft to pass through is arranged on the central box body, so that the torsional resistance and the shearing resistance of the tool rest are effectively improved, the strength requirement on machining the large-diameter deep courtyard tool rest is met, and the stable operation of reaming operation is ensured.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of an assembly of an embodiment of the present invention;
FIG. 2 is a schematic view of a tool holder according to an embodiment of the invention;
FIG. 3 is a partial cross-sectional view of an embodiment of the present invention;
FIG. 4 is an enlargement at A in FIG. 3;
FIG. 5 is a schematic view of a wedge block according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a wedge of an embodiment of the present invention.
Reference numerals:
the central box 100, the first connecting surface 110, the second connecting surface 120, the mounting hole 121, the clamping hole 130, the first groove wall 131 and the second groove wall 132;
the tool post 200, the embedded structure 210, the first abutting surface 211, the torsion pin 220, the riding wheel 230, the fixing plate 240, the first bolt 241, the second bolt 242, the through hole 250 and the operation hole 260;
wedge 300, second abutment surface 310, fastener 320;
a connector 400.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Along with the continuous change of the mining process and method, the use scene of the current large-diameter deep raise boring equipment is more and more, the diameter of the cutterhead in the reaming operation is larger and larger, and the impact force, extrusion force, shearing load and the like born by the cutter frame 200 of the cutterhead are increased, so that the requirements on the cutterhead are higher and higher, and the technical problem to be solved is how to enable the cutter frame 200 of the cutterhead to meet the strength requirements required by the reaming operation of a large-diameter deep raise boring machine. The existing cutterhead is divided into two types, one is a combined cutterhead and the other is an integral cutterhead, and a cutter frame 200 of the combined cutterhead is detachably connected with a central box body 100, so that the cutter frame 200 is convenient to replace independently, but the cutter frame 200 of the existing combined cutterhead is connected with the central box body 100 only through bolts, so that the strength requirement required by reaming operation of a large-diameter deep raise boring machine cannot be met; the integral cutterhead has the problem that the integral cutterhead cannot enter a cage and a chamber due to the fact that the diameter of the integral cutterhead is too large. In order to solve the technical problems, the embodiment of the invention provides a combined cutterhead and a raise boring machine, and the combined cutterhead of the embodiment can meet the strength requirement required by the reaming operation of a large-diameter deep raise boring machine, so that the stable reaming operation is ensured. The combined cutterhead and the raise boring machine according to the embodiments of the present invention will be described in detail with reference to fig. 1 to 6.
Example 1
Referring to fig. 1, a combined cutterhead according to an embodiment of the first aspect of the present invention includes a central casing 100 and tool holders 200, the tool holders 200 are detachably connected to the central casing 100, a plurality of tool holders 200 are connected to an outer periphery of the central casing 100, and the plurality of tool holders 200 are uniformly spaced around the outer periphery of the central casing 100. The center housing 100 includes a first connection surface 110 and a second connection surface 120, where the first connection surface 110 and the second connection surface 120 are disposed adjacent to each other, and the first connection surface 110 and the second connection surface 120 are perpendicular to each other. Taking fig. 1 as an example, the first connection surface 110 is the upper surface of the central box 100, and the second connection surface 120 is the surface of the central box 100 facing the tool rest 200; only one of the first coupling surfaces 110 is provided, while a plurality of second coupling surfaces 120 are provided, and one tool holder 200 is coupled to each of the second coupling surfaces 120.
Further, the first connection surface 110 is provided with a clamping groove 130, the second connection surface 120 is provided with a mounting hole 121 penetrating through the second connection surface 120, and the clamping groove 130 is provided in plurality corresponding to the plurality of second connection surfaces 120. Referring to fig. 1, the card slot 130 is rectangular, and the inner sidewall of the card slot 130 is preferably not provided with a chamfer. Because the clamping groove 130 is rectangular, the clamping groove 130 has four groove walls, the four groove walls are all vertically arranged, and the four groove walls are all vertical to the groove bottom surface of the clamping groove 130. The mounting hole 121 is provided at a position of the second connection surface 120 which is shifted down from the center.
In the embodiment of the present invention, the tool holder 200 is provided with an insert structure 210 and a torsion pin 220, the insert structure 210 is installed in the clamping groove 130, and the torsion pin 220 is penetrated through the installation hole 121. Specifically, referring to fig. 1 and 3, the insertion structure 210 extends toward the center housing 100, and the torsion pin 220 is detachably coupled to the tool post 200. Taking fig. 3 as an example, the torsion pin 220 is mounted to a front side of the tool holder 200, the front side of the tool holder 200 is aligned with the second connection surface 120 of the center housing 100, the front side of the tool holder 200 is substantially identical in size to the second connection surface 120 of the center housing 100, and the front side of the tool holder 200 is connected to the second connection surface 120 of the center housing 100 by a plurality of connection members 400. The detachable connection of the torque pin 220 to the tool holder 200 enables individual replacement of the torque pin 220, thereby reducing maintenance costs.
In the embodiment of the present invention, the connection member 400 is a bolt, which sequentially passes through the front side surface of the tool holder 200 and is locked with the second connection surface 120 of the center housing 100; the plurality of connecting members 400 are divided into two rows, and the two rows of connecting members 400 are respectively disposed on two opposite sides of the second connecting surface 120, that is, on two sides of the tool rest 200 in the left-right direction in fig. 2.
Further, the torsion pin 220 is installed at a central position of the plurality of connection members 400, and when the tool holder 200 is subjected to a shearing force, the force shared by the plurality of connection members 400 is relatively uniform. Specifically, the front side of the tool holder 200 is provided with a through hole 250, and further includes a fixing plate 240, where the fixing plate 240 is used to connect the torsion pin 220 and the tool holder 200; the torsion pin 220 is inserted through the through hole 250, and the fixing plate 240 is connected to a side of the front side of the tool holder 200 facing away from the center housing 100.
Referring to fig. 1 and 3, the fixing plate 240 is circular, the outer circumference of the fixing plate 240 is connected to the tool holder 200, the center of the fixing plate 240 is connected to the torsion pin 220, the fixing plate 240 is connected to the torsion pin 220 by a plurality of first bolts 241, the fixing plate 240 is connected to the tool holder 200 by a plurality of second bolts 242, and the plurality of second bolts 242 are provided at regular intervals around the circumference on the outer circumference of the torsion pin 220. The circular fixing plate 240 can better distribute the shearing force received by the torsion pin 220, and the plurality of first bolts 241 are provided to make the connection between the torsion pin 220 and the fixing plate 240 more stable, and the shearing force received by a single first bolt 241 is smaller; the plurality of second bolts 242 are provided in order to make the connection of the fixing plate 240 with the tool holder 200 more stable, and the shearing force received by the single second bolt 242 is smaller.
It should be understood that the first bolt 241 and the second bolt 242 may be bolts with the same size, or may be bolts with different sizes, which may be specifically selected according to practical situations.
In an embodiment of the present invention, the torsion pin 220 is interference fit with the mounting hole 121. Specifically, the interference fit can ensure that no gap exists between the outer peripheral wall of the torsion pin 220 and the inner side wall of the mounting hole 121, so that the torsion pin 220 is prevented from shaking in the mounting hole 121, the shearing force applied to the tool rest 200 at any angle can be transmitted to the torsion pin 220, and the torsion resistance of the tool rest 200 is improved.
It is conceivable that the size of the torsion pin 220 is larger than that of the connector 400, and that the torsion pin 220 is preferably made of cemented carbide or the like. In addition, the torque pin 220 and the through hole 250 preferably also use an interference fit.
In the embodiment of the present invention, the wedge 300 is further included, and the wedge 300 is mounted on the clamping groove 130 and abuts against the embedded structure 210; the wedge 300 is used for pushing the embedded structure 210 to abut against the groove wall of the clamping groove 130, so that the distance between the embedded structure 210 and the groove wall of the clamping groove 130 is eliminated, and the stability of the connection between the tool rest 200 and the central box 100 is improved. Specifically, the wedge 300 is mainly used to tightly hold the embedded structure 210 in the width direction of the clamping groove 130. Referring to fig. 3 and 4, taking fig. 3 as an example, the front-rear direction in fig. 3 is the width direction of the slot 130; for ease of understanding, in this embodiment, the groove walls on both sides of the width direction of the clamping groove 130 are defined as a first groove wall 131 and a second groove wall 132, wherein the first groove wall 131 is a rear groove wall of the clamping groove 130, and the second groove wall 132 is a front groove wall of the clamping groove 130; referring to fig. 4, it can be seen that the embedded structure 210 abuts against the first groove wall 131, and the wedge 300 abuts against the second groove wall 132.
Further, taking the front-back direction as shown in fig. 3 and 4 as an example, the front side surface of the embedded structure 210 is a first contact surface 211, the rear side surface of the embedded structure 210 is a vertical plane, and the rear side of the embedded structure 210 is abutted against the first groove wall 131 of the clamping groove 130; the front side surface of the wedge block 300 is a vertical plane, the rear side surface of the wedge block 300 is a second abutting surface 310, the front side surface of the wedge block 300 abuts against the second groove wall 132 of the clamping groove 130, the first abutting surface 211 abuts against the second abutting surface 310, and the first abutting surface 211 is obliquely arranged; correspondingly, the second abutment surface 310 is disposed obliquely with respect to the first abutment surface 211. The first abutting surface 211 and the second abutting surface 310 which are obliquely arranged can facilitate the insertion of the wedge 300 and the relative sliding of the wedge 300 and the second abutting surface.
It should be appreciated that during actual use, the wedge 300 is not necessarily in the state shown in fig. 4, and the upper surface of the wedge 300 should normally be higher than the upper surface of the tool holder 200, i.e. the first abutment surface 211 and the second abutment surface 310 are not perfectly aligned, but only a partial area of the first abutment surface 211 and the second abutment surface 310 overlap. The wedge 300 is connected with the bottom of the clamping groove 130 through a fastener 320, and the fastener 320 can be a bolt and other structures, preferably a bolt; the fastening member 320 passes through the wedge 300 and is connected with the groove bottom of the clamping groove 130, the wedge 300 is provided with a through hole for the fastening member 320 to pass through, the groove bottom of the clamping groove 130 is provided with a threaded hole, and the fastening member 320 is in threaded connection with the threaded hole. When the fastener 320 is tightened, the fastener 320 can drive the wedge 300 to descend, so that the contact area of the first contact surface 211 and the second contact surface 310 is gradually increased, and as the contact area of the first contact surface and the second contact surface is increased, the embedded structure 210 can be pushed to move backward so as to be abutted against the first groove wall 131 of the clamping groove 130.
It is conceivable that if the insertion structure 210 or the first groove wall 131 is worn out by a long time use, and thus a gap is generated between the insertion structure 210 and the first groove wall 131 and shakes, the insertion structure 210 may be abutted by further tightening the fastener 320. The adjusting method of the embodiment is simple, low in manufacturing cost and convenient for large-scale manufacturing production.
Further, the wedge 300 is preferably connected to the clamping groove 130 by a plurality of fasteners 320, and the fasteners 320 are uniformly spaced along the length of the wedge 300, so as to improve the stability of the adjustment of the wedge 300. The width of the clamping groove 130 and the width of the wedge 300 can be selected to be reasonable values according to the size of the cutterhead. The wedge blocks 300 are arranged to push the embedded structure 210 to be abutted against the groove walls of the clamping grooves 130, so that the gap at the joint of the tool rest 200 and the central box body 100 is effectively eliminated, and the stability and reliability of the connection of the tool rest and the central box body are improved; by arranging the torsion pin shaft 220 on the center box body 100 and arranging the mounting hole 121 for the torsion pin shaft 220 to pass through on the tool rest 200, the torsion resistance and the shearing resistance of the tool rest 200 are effectively improved, the strength requirement on machining the large-diameter deep courtyard tool rest 200 is met, and the stable operation of reaming operation is ensured.
As can be seen from the above, the first abutting surface 211 and the second abutting surface 310 are both inclined, and the inclined angles of the first abutting surface 211 and the second abutting surface 310 are the same because the first abutting surface 211 and the second abutting surface 310 are matched with each other; to facilitate understanding of the inclination angles of the first abutment surface 211 and the second abutment surface 310, the present embodiment expresses the inclination angles of the first abutment surface 211 and the second abutment surface 310 by an angle α shown in fig. 6, wherein the angle α is preferably 65 ° or less and 70 ° or less, and the wedge 300 is lowered within the angle range to provide a larger component force for the horizontal sliding of the embedded structure 210, thereby reducing the shaking of the embedded structure 210.
The combined cutterhead in the embodiment of the invention further comprises a riding wheel 230, wherein the riding wheel 230 is rotatably installed at one end of the cutter frame 200 far away from the center box 100 around the axis of the riding wheel 230, and part of the riding wheel 230 extends out of the cutter frame 200. Specifically, referring to fig. 2 and 3, the riding wheel 230 is detachably connected with the tool post 200, and when the riding wheel 230 is worn, the riding wheel 230 can be individually replaced or maintained, thereby reducing maintenance cost. The outer peripheral surface of the riding wheel 230 extends out of the tool rest 200, that is, when the cutterhead is in reaming operation, the riding wheel 230 is firstly contacted with the well wall, so that abrasion of the tool rest 200 caused by the well wall is reduced. Taking the direction shown in fig. 2 as an example, the rear end of the current tool rest 200 is basically not provided with the riding wheel 230, so that the rear end of the tool rest 200 can be directly contacted with a well wall, abrasion of the rear end of the tool rest 200 can be caused during reaming operation of a cutterhead, and the service life of the tool rest 200 is influenced; by arranging the riding wheel 230 at the rear end of the tool rest 200, and the riding wheel 230 extends out of the tool rest 200, the well wall will wear the riding wheel 230 first, and the riding wheel 230 can rotate around the axis of the riding wheel, so that the sliding friction between the tool rest 200 and the well wall can be changed into rolling friction, and the obstruction of the well wall to the rotation of the cutterhead is reduced; in addition, the outer circumferential surface of the riding wheel 230 is inlaid with hard alloy teeth, so that the wear resistance of the riding wheel 230 can be increased.
Example two
The raise boring machine of the second aspect of the present invention includes the above-mentioned combination cutterhead. Because the raise boring machine comprises the combined cutterhead, the raise boring machine has at least all the beneficial effects of the combined cutterhead, and the description is omitted here.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (6)
1. A combination cutterhead, comprising:
the central box body comprises a first connecting surface and a second connecting surface, and the first connecting surface and the second connecting surface are adjacently arranged; the first connecting surface is provided with a clamping groove, and the second connecting surface is provided with a mounting hole;
the tool rest is provided with an embedded structure and a torsion-resistant pin shaft, the embedded structure is arranged in the clamping groove, and the torsion-resistant pin shaft is arranged in the mounting hole in a penetrating manner; the torsion pin shaft is in interference fit with the mounting hole;
the wedge block is arranged in the clamping groove and is propped against the embedded structure; the wedge block is used for pushing the embedded structure to be abutted against the groove wall of the clamping groove;
the torsion-resistant pin shaft is connected with the tool rest through the fixing plate; the periphery of the fixing plate is connected with the tool rest, and the center of the fixing plate is connected with the torsion pin shaft; the fixing plate is round; the fixing plate is connected with the torsion pin shaft through a plurality of first bolts, the fixing plate is connected with the tool rest through a plurality of second bolts, and the second bolts are uniformly arranged on the periphery of the torsion pin shaft at intervals around the circumference;
the connecting piece is used for connecting the tool rest and the central box body;
the riding wheel is rotatably arranged at one end of the cutter rest, which is far away from the central box body, around the axis of the riding wheel, and the riding wheel part extends out of the cutter rest.
2. The combination cutterhead according to claim 1, wherein: the clamping groove is provided with a first groove wall and a second groove wall which are oppositely arranged, and the first groove wall and the second groove wall are vertically arranged; the embedded structure is propped against the first groove wall, and the wedge block is propped against the second groove wall.
3. The combination cutterhead according to claim 1, wherein: the embedded structure is provided with a first abutting surface, the wedge block is provided with a second abutting surface matched with the first abutting surface, and the first abutting surface abuts against the second abutting surface; the first abutting surface is obliquely arranged.
4. The combination cutterhead according to claim 1, wherein: the wedge blocks are connected with the bottoms of the clamping grooves through fasteners.
5. The combination cutterhead according to claim 1, wherein: the connecting pieces are arranged in a plurality, and the connecting pieces are arranged in a plurality; the torsion pin shafts are arranged at the center positions of the connecting pieces, and the connecting pieces are connected with the second connecting surfaces.
6. A raise boring machine comprising a combination cutterhead according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202410078332.5A CN117569744B (en) | 2024-01-19 | 2024-01-19 | Combined cutterhead and raise boring machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410078332.5A CN117569744B (en) | 2024-01-19 | 2024-01-19 | Combined cutterhead and raise boring machine |
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| CN117569744A CN117569744A (en) | 2024-02-20 |
| CN117569744B true CN117569744B (en) | 2024-04-09 |
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| CN117569744A (en) | 2024-02-20 |
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