CN215444064U - Cutter head structure of small-diameter full-section hard rock heading machine - Google Patents
Cutter head structure of small-diameter full-section hard rock heading machine Download PDFInfo
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- CN215444064U CN215444064U CN202121912049.6U CN202121912049U CN215444064U CN 215444064 U CN215444064 U CN 215444064U CN 202121912049 U CN202121912049 U CN 202121912049U CN 215444064 U CN215444064 U CN 215444064U
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Abstract
The utility model relates to a small-diameter full-section hard rock tunneling machine cutter head structure, which comprises: the cutter comprises a large cutter head, a small cutter head, a double-cutter knife frame, a central cutter knife frame, a single-cutter knife frame and a side single-cutter knife frame; the large cutter head and the small cutter head are connected to form an integral cutter head, and the double-cutter frame, the central cutter frame, the single-cutter frame and the edge single-cutter frame are welded on the integral cutter head; the central knife frame is positioned in the center of the integral cutterhead, and the two double-knife frames and the two single-knife frames are respectively and symmetrically arranged on two sides of the central knife frame; the edge of the integral cutter head is distributed with a plurality of edge single-cutter knife frames; the outer parts of the central knife frame, the double-knife frame and the single-knife frame are provided with frame-shaped guard plates for reinforcing the corner parts of the knife frames, and the outer parts of the frame-shaped guard plates are provided with triangular rib plates; a flat plate protective plate is arranged between the edge single-knife frame and the side plate of the integral knife disc to reinforce the edge part outside the knife frame. According to the utility model, the overall strength of the cutter frame is increased by thickening the thickness of the base material at the edge of the cutter frame and performing corner wrapping reinforcement on the quadrangle position of the cutter frame, the service life of the cutter head is ensured, and the tunneling efficiency can be improved.
Description
Technical Field
The utility model belongs to the technical field of hard rock roadway tunneling equipment for mines, and relates to a cutter head structure of a small-diameter full-face hard rock tunneling machine.
Background
At present, the underground coal mine roadway tunneling equipment is mainly a cantilever type tunneling machine, when the uniaxial compressive strength of rocks is more than or equal to 80MPa, the existing cantilever type tunneling machine at home and abroad is difficult to adapt to the working condition requirements, so that the consumption of cutting heads, cutting teeth and the like is increased, the service life of all parts of the whole machine is greatly reduced, the tunneling cost is sharply increased, and the tunneling machine cannot be used in serious cases. The research on the hard rock full-face heading machine is the current development trend. The diameter of a mine tunnel is required to be small due to the particularity of the mine tunnel, the general diameter is smaller than 3 meters, the arrangement of cutters of a cutter head of a full-face tunneling machine is limited due to the small diameter of the mine tunnel, the protruding panel of the cutter frame is too high to meet the tunneling requirement, the cutter frame is easy to crack after long-term operation under the working condition that the rock hardness is larger than or equal to 100Mpa, the overhaul under the mine is very troublesome, time and labor are wasted, the tunneling efficiency is influenced, and therefore the research on the reinforcement of the cutter head cutter frame is very significant.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model aims to provide a cutter head structure of a small-diameter full-face hard rock heading machine, which increases the overall strength of a cutter frame by thickening the thickness of a base material at the edge of the cutter frame and performing wrap angle reinforcement on the four-corner position of the cutter frame, ensures the service life of the cutter head and can improve the heading efficiency.
The utility model relates to a small-diameter full-section hard rock tunneling machine cutter head structure, which comprises: the cutter comprises a large cutter head, a small cutter head, a double-cutter knife frame, a central cutter knife frame, a single-cutter knife frame and a side single-cutter knife frame; the large cutter head and the small cutter head are connected through bolts to form an integral cutter head, and the double-cutter frame, the central cutter frame, the single-cutter frame and the edge single-cutter frame are fixed on a panel of the integral cutter head through bolts; the central cutter frame is positioned at the center of the integral cutter head, the two double-cutter frames are symmetrically arranged at two sides of the central cutter frame, and the two single-cutter frames are symmetrically arranged at two sides of the central cutter frame; the edge of the integral cutter head is distributed with a plurality of edge single-cutter knife frames; frame-shaped guard plates are arranged outside the central knife frame, the double-knife frame and the single-knife frame to reinforce the corner parts of the knife frames, and triangular rib plates are arranged outside the frame-shaped guard plates; and a flat plate protective plate is arranged between the edge position single-cutter knife frame and the side plate of the integral cutter head to reinforce the edge part outside the knife frame.
In the cutterhead structure of the small-diameter full-section hard rock tunnel boring machine, the outer parts of the double-cutter frame, the central cutter frame and the single-cutter frame are reinforced by at least one frame-shaped guard plate, and the corner parts of the cutter frames are reinforced by right-angle guard plates at narrow intervals.
In the cutterhead structure of the small-diameter full-section hard rock heading machine, the materials of various knife frames are Q690D, the material of the whole cutterhead panel is Q345E, various guard plates are made of Q460C, and the material of the triangular rib plate is the same as that of the whole cutterhead panel.
In the cutterhead structure of the small-diameter full-section hard rock heading machine, the thicknesses of various guard plates and the weak positions of the reinforced knife frames are equal.
In the cutterhead structure of the small-diameter full-face hard rock tunnel boring machine, various guard plates are welded outside the corresponding cutter frame.
According to the cutter head structure of the small-diameter full-face hard rock tunneling machine, the fact that the front hob cutter frame is prone to cracking is found according to specific point location analysis of cutter frame cracking of the full-face tunneling machine in the actual hard rock tunneling working process, wherein the double-cutter frame cracking condition is more serious than the single-cutter frame cracking condition, and the cracking point locations are mostly at four corners of the cutter frame with concentrated welding stress and at the edges with weak base materials of partial cutter frames. Therefore, the design of reinforcing the cutter frame mainly aims at reinforcing and thickening the cutter frame quadrangle position where the front cutter frame is easy to crack and the weak position of the base metal of the cutter frame, the design scheme not only ensures that the integral strength of the cutter frame is increased, but also ensures that the cutter installation is not interfered after the reinforcement. Meanwhile, a protection plate is made of a proper material selected according to the materials of the cutter frame and the cutter head panel, the triangular rib plate is made of the same material as the cutter frame panel, the overall strength of the cutter frame is increased through the combined action of the protection plate and the triangular rib plate, the service life of the cutter head is guaranteed, and the tunneling efficiency can be improved. The practical problems that the cutter frame is cracked, the underground maintenance is difficult, and the production progress is influenced are solved.
Drawings
Fig. 1 is a schematic view of a small-diameter full-face hard rock tunnel boring machine cutter head structure according to the utility model;
FIG. 2 is a schematic view of a frame-type shield structure;
FIG. 3 is a schematic view of a flat panel shield construction;
FIG. 4 is a schematic view of a right angle sheeting construction;
fig. 5 is a schematic view of a triangular rib structure.
Detailed Description
As shown in fig. 1 to 5, the cutterhead structure of the small-diameter full-face hard rock heading machine of the utility model comprises: the cutter comprises a large cutter head 1, a small cutter head 2, a double-cutter knife frame 3, a central cutter knife frame 4, a single-cutter knife frame 5 and a side single-cutter knife frame 6. The large cutter head 1 and the small cutter head 2 are connected through bolts to form an integral cutter head, and the double-cutter knife frame 3, the central cutter knife frame 4, the single-cutter knife frame 5 and the edge single-cutter knife frame 6 are welded and fixed on a panel of the integral cutter head. The central knife frame 4 is positioned at the center of the integral knife disc, the two double-knife frames 3 are symmetrically arranged at two sides of the central knife frame 4, and the two single-knife frames 5 are symmetrically arranged at two sides of the central knife frame 4. And a plurality of edge single-knife frames 6 are distributed at the edge of the integral cutterhead. A frame-shaped guard plate 7 is arranged outside the central knife frame 4, the double-knife frame 3 and the single-knife frame 5 to reinforce the corner of the knife frame, and a triangular rib plate 8 is arranged outside the frame-shaped guard plate; and a flat guard plate 9 is arranged between the edge single-cutter frame 6 and the side plate of the integral cutter head to reinforce the edge part outside the cutter frame.
During specific implementation, the outer portions of the double-cutter knife frame 3, the central knife frame 4 and the single-cutter knife frame 5 are reinforced by at least one frame-shaped guard plate 7, and the narrow-space positions are reinforced at the corner portions of the knife frames by right-angle guard plates 10.
During specific implementation, the material of each knife frame is Q690D, the material of the whole cutterhead panel is Q345E, various guard plates are made of Q460C, and the material of the triangular rib plate is the same as that of the whole cutterhead panel.
In specific implementation, the thicknesses of various guard plates and the weak positions of the knife frames reinforced by the guard plates are equal, and particularly the thickness is 30 mm.
In specific implementation, various guard plates are welded outside the corresponding knife frames.
According to the concrete point location analysis of full section entry driving machine in the hard rock of reality tunnelling course cutter frame fracture, the discovery is mostly the easy fracture of positive hobbing cutter frame, and wherein the condition of double knives cutter frame fracture is more serious than the condition of single sword frame fracture, and its fracture point is mostly the edge that cutter frame four corners department and part cutter frame base metal that welding stress is comparatively concentrated. Therefore, the design of reinforcing the tool frame mainly aims at reinforcing and thickening the tool frame quadrangle position where the front tool frame is easy to crack and the weak position of the base metal of the tool frame, the design scheme not only ensures that the overall strength of the tool frame is increased, but also ensures that the tool installation is not interfered after the reinforcement. During specific implementation, the lengths of 3 sides of the frame-shaped guard plate and 2 sides of the right-angle guard plate are adjusted according to the layout of the cutter head and the actual cracking point analysis, and the number of the frame-shaped guard plate and the number of the right-angle guard plate are adjusted. When the double-knife frame is closer to the edge of the cutter head, a plug plate 11 can be arranged between the double-knife frame and the side plate of the cutter head so as to support and reinforce the double-knife frame.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined by the appended claims.
Claims (5)
1. The utility model provides a full section hard rock entry driving machine blade disc structure of minor diameter which characterized in that includes: the cutter comprises a large cutter head, a small cutter head, a double-cutter knife frame, a central cutter knife frame, a single-cutter knife frame and a side single-cutter knife frame; the large cutter head and the small cutter head are connected through a bolt to form an integral cutter head, and the double-cutter frame, the central cutter frame, the single-cutter frame and the edge single-cutter frame are welded and fixed on a panel of the integral cutter head; the central cutter frame is positioned at the center of the integral cutter head, the two double-cutter frames are symmetrically arranged at two sides of the central cutter frame, and the two single-cutter frames are symmetrically arranged at two sides of the central cutter frame; the edge of the integral cutter head is distributed with a plurality of edge single-cutter knife frames; frame-shaped guard plates are arranged outside the central knife frame, the double-knife frame and the single-knife frame to reinforce the corner parts of the knife frames, and triangular rib plates are arranged outside the frame-shaped guard plates; and a flat plate protective plate is arranged between the edge position single-cutter knife frame and the side plate of the integral cutter head to reinforce the edge part outside the knife frame.
2. The cutterhead structure of a small-diameter full-face hard rock heading machine according to claim 1, wherein the outer portions of the double-cutter frame, the central cutter frame and the single-cutter frame are reinforced by at least one frame-shaped guard plate, and the narrow-space portions are reinforced at the corners of the cutter frames by right-angle guard plates.
3. The small-diameter full-face hard rock heading machine cutterhead structure according to claim 1, wherein the material of each knife frame is Q690D, the material of the integral cutterhead panel is Q345E, the material of each guard plate is Q460C, and the material of the triangular rib plate is the same as that of the integral cutterhead panel.
4. The cutterhead structure of a small-diameter full-face hard rock ripper of claim 1, wherein the thickness of each guard plate is equal to the thickness of the weak portion of the knife frame reinforced by the guard plate.
5. The small-diameter full-face hard rock ripper cutter head structure of claim 1, wherein various guards are welded outside the respective cutter frames.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121912049.6U CN215444064U (en) | 2021-08-16 | 2021-08-16 | Cutter head structure of small-diameter full-section hard rock heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121912049.6U CN215444064U (en) | 2021-08-16 | 2021-08-16 | Cutter head structure of small-diameter full-section hard rock heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215444064U true CN215444064U (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121912049.6U Active CN215444064U (en) | 2021-08-16 | 2021-08-16 | Cutter head structure of small-diameter full-section hard rock heading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215444064U (en) |
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2021
- 2021-08-16 CN CN202121912049.6U patent/CN215444064U/en active Active
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