CN211777444U - Double-shaft double-edge hob fixing device for normal-pressure tool changing cutterhead - Google Patents
Double-shaft double-edge hob fixing device for normal-pressure tool changing cutterhead Download PDFInfo
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- CN211777444U CN211777444U CN202020432433.5U CN202020432433U CN211777444U CN 211777444 U CN211777444 U CN 211777444U CN 202020432433 U CN202020432433 U CN 202020432433U CN 211777444 U CN211777444 U CN 211777444U
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Abstract
The utility model discloses a double-shaft double-blade hob fixing device for a normal-pressure tool changing cutterhead, which comprises a hob barrel, wherein a hob cutter holder is detachably arranged in the hob barrel, and at least two hobs are arranged in the hob cutter holder; each hob is internally provided with a hob shaft, the two sides of the hob shaft are symmetrically provided with end covers, and the end covers are connected with hob cutter holders through radial tensioning mechanisms. The utility model discloses a hobbing cutter blade holder adopts the integral design, and intensity rigidity is more reliable, and the hobbing cutter sets up in the hobbing cutter blade holder, has strengthened the bearing capacity of hobbing cutter, when changing the hobbing cutter, can directly dismantle the hobbing cutter blade holder, is convenient for maintain or change; the two hobbing cutters are independently arranged in the cutter barrel, so that the arrangement space of the cutters on the cutter head is saved, the two independent single-edge hobbing cutters are arranged in one cutter barrel, and the tunneling efficiency of the shield tunneling machine is improved.
Description
Technical Field
The utility model belongs to the technical field of tunnel boring machine, concretely relates to ordinary pressure tool changing blade disc biax twolip hobbing cutter fixing device.
Background
With the development of the transportation industry and the underground space industry, the construction of tunnels across the river and the sea increases year by year, and the demand of a slurry shield, which is a special engineering machine for the tunnels across the river and the sea, increases year by year. The construction of tunnels across rivers and sea generally has the characteristics of high water pressure and large burial depth, and the pressure of the muddy water cabin can reach more than 10 bar.
At present, a slurry shield cutter head mainly comprises a normal-pressure cutter changing cutter head and a conventional cutter changing cutter head, wherein the normal-pressure cutter changing cutter head has incomparable advantages compared with the conventional shield in safety. However, the existing normal-pressure cutter changing cutterhead only adopts a shaft type fixing mode, and the bearing capacity of the hob is limited by the cutter fixing mode, so that the tunneling efficiency of equipment is limited.
Chinese patent (publication No. CN208441847U, published japanese 20190129) discloses a novel front-loading type normal pressure tool changing cylinder device, in which a tool apron and an integrated tool changing cylinder are integrally formed, a tool groove is formed on the tool apron, a disc cutter member is located in the tool groove, the lower part of the disc cutter member is connected with the integrated tool changing cylinder through a cutter fixing bolt, two sides of the disc cutter member are fixed on the integrated tool changing cylinder through a pressing block, and the lower part of the pressing block is connected with the integrated tool changing cylinder through a pressing block tightening bolt. Although the problem that the cutter barrel is easy to block is solved in the patent, the cutter barrel is not convenient to replace or maintain.
SUMMERY OF THE UTILITY MODEL
The problem of the hobbing cutter bearing capacity not enough to current ordinary pressure tool changing blade disc, the utility model provides an ordinary pressure tool changing blade disc biax twolip hobbing cutter fixing device has solved the limited problem of arranging of hobbing cutter in the single sword section of thick bamboo of ordinary pressure blade disc, has promoted the whole tunnelling efficiency of shield structure machine.
For solving the above technical problem, the utility model discloses the technical scheme who adopts as follows:
a double-shaft double-edge hob fixing device for a normal-pressure tool changing cutterhead comprises a hob barrel, wherein a hob cutter holder is detachably arranged in the hob barrel, and at least two hobs are arranged in the hob cutter holder; each hob is internally provided with a hob shaft, the two sides of the hob shaft are symmetrically provided with end covers, and the end covers are connected with hob cutter holders through radial tensioning mechanisms. The hob cutter holder is designed in an integral manner, so that the bearing structure of the hob can be enhanced, and the hob cutter holder can be directly detached to facilitate direct replacement of the hob; the two hobbing cutters are designed independently, so that the tunneling efficiency of the shield tunneling machine can be improved.
The radial tensioning mechanism comprises a cutter tensioning piece, the cutter tensioning piece is arranged at the rear part of the hob cutter seat, and the cutter tensioning piece penetrates through the hob cutter seat and is connected with the end cover. The cutter tension member positions the hob in the radial direction to increase the bearing capacity of the hob.
An axial tensioning mechanism is movably arranged between the hob seat and the end cover positioned on the outer side, and the axial tensioning mechanism positions the hob in the axial direction so as to increase the bearing capacity of the hob.
The axial tensioning mechanism comprises an axial tensioning block and a rotating connecting piece, wherein an inclined plane I is arranged on one side of the axial tensioning block, the other side of the axial tensioning block is matched with the end cover, and the axial tensioning block is connected with the hob seat through the rotating connecting piece; the inclined plane I inclines towards the direction far away from the center of the hob, and the inclined plane I is matched with the inner wall of the hob holder.
The rotary connecting piece comprises a nut and a double-end stud, one end of the double-end stud penetrates through the hob base and then is in threaded connection with the axial tensioning block, and the other end of the double-end stud is provided with the nut.
A groove is formed in the inner side of the hob seat, inclined planes II are symmetrically arranged on two sides of the groove, and the bottom of the groove is a plane; the end cover is arranged in the groove and matched with the groove, so that the end cover can be fixed better.
The cutter shaft and the end cover on the inner side are of an integrally formed structure so as to reduce the volume of the whole structure of the hob.
The hob cutter seat is detachably connected with the cutter barrel through a cutter seat tensioning piece, and the axial tensioning block is arranged on one side of the hob cutter seat.
The hob cutter holder is a cylindrical cutter holder which is arranged in the cutter barrel, and the cylindrical cutter holder is matched with the interior of the cutter barrel.
The utility model has the advantages that:
the utility model discloses a hobbing cutter blade holder adopts the integral design, and intensity rigidity is more reliable, and the hobbing cutter sets up in the hobbing cutter blade holder, has strengthened the bearing capacity of hobbing cutter, when changing the hobbing cutter, can directly dismantle the hobbing cutter blade holder, is convenient for maintain or change; the two hobbing cutters are independently arranged in the cutter barrel, so that the arrangement space of the cutters on the cutter head is saved, the two independent single-edge hobbing cutters are arranged in one cutter barrel, and the tunneling efficiency of the shield tunneling machine is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is an axial cross-sectional view of FIG. 1
Fig. 3 is a radial cross-sectional view of fig. 1.
Fig. 4 is a top view of fig. 1.
In the figure, 1 is a cutter barrel, 2 is a hob, 2-1 is an end cover, 3 is an axial tensioning block, 4 is a hob seat, 5 is a cutter tensioning piece, 6 is a seat tensioning piece, 7 is a rotary connecting piece, and 8 is a groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
Example 1: a double-shaft double-edge hob fixing device for an atmospheric pressure tool changing cutterhead comprises a hob barrel 1, wherein a hob cutter holder 4 is arranged in the hob barrel 1, the hob cutter holder 4 is a cylindrical cutter holder, the hob cutter holder 4 is detachably connected with the hob barrel 1 through a cutter holder tensioning piece 6, and at least two hobs 2 are symmetrically arranged in the hob cutter holder 4; the number of the roller cutters 2 can be two, three or four, and is preferably two; the tool apron tensioning members 6 are arranged on two sides of the hob tool apron 4, and the hob tool apron 4 can be integrally disassembled or assembled by rotating the tool apron tensioning members 6; the hob cutter holder 4 and the hob 2 are designed integrally, so that the bearing capacity of the hob 2 is enhanced, when the hob 2 needs to be replaced, the hob cutter holder 4 can be directly detached from the cutter barrel 1, and later maintenance or replacement of the hob 2 is facilitated; each hob 2 is internally provided with a cutter shaft, the cutter shaft is provided with a bearing, the hobs 2 are movably arranged on the cutter shaft through the bearings, the two hobs 2 are independently designed, one hob can continuously tunnel when the other hob does not work, and the tunneling efficiency of the shield tunneling machine is improved; end covers 2-1 are symmetrically arranged on two sides of the cutter shaft, the end covers 2-1 are connected with a hob cutter holder 4 through a radial tensioning mechanism, and the radial tensioning mechanism positions the hob cutter 2 in the radial direction; the cutter shaft and the inner end cover 2-1 are manufactured by adopting an integral forming technology, so that the occupied area of the cutter shaft and the end cover 2-1 is reduced, and the volume of a single hob 2 is further reduced.
As shown in fig. 3, the radial tensioning mechanism includes a tool tensioning member 5, the tool tensioning member 5 is disposed at the rear of the hob holder 4, and the tool tensioning member 5 is connected to the end cap 2-1 through the hob holder 4, the end cap 2-1 can be fixed by rotating the tool tensioning member 5, and when the hob 2 needs to be disassembled, the tool tensioning member 5 is rotated reversely. In this embodiment, the tool tension member 5 and the tool apron tension member 6 are tension bolts.
As shown in fig. 2, an axial tensioning mechanism is movably disposed between the hob seat 4 and the end cover 2-1 located at the outer side, the axial tensioning mechanism may be disposed at both sides of the hob seat 4, or may be disposed at one side of the hob seat 4, and the rotary axial tensioning mechanism may position the hob 2 in the axial direction.
The axial tensioning mechanism comprises an axial tensioning block 3 and a rotating connecting piece 7, an inclined plane I is arranged on one side of the axial tensioning block 3, the other side of the axial tensioning block 3 is matched with the middle part of the end cover 2-1, the axial tensioning block 3 is connected with the hob seat 4 through the rotating connecting piece 7, and the distance between the axial tensioning block 3 and the hob seat 4 can be adjusted through rotating the rotating connecting piece 7; the inclined plane I inclines towards the direction far away from the center of the hob 2, and the inclined plane I is matched with the inner wall of the hob holder 4. When the hob 2 needs to be fixed, the rotary connecting piece 7 is rotated to enable the axial tensioning block 3 to move towards the direction close to the hob holder 4 so as to axially fix the hob 2 through the end cover 2-1; when the hob 2 needs to be disassembled, the connecting piece 7 is rotated reversely, so that the axial tensioning block 3 moves away from the hob holder 4.
The rotary connecting piece 7 comprises a nut and a stud, one end of the stud is connected with the axial tensioning block 3 in a threaded mode after penetrating through the hob cutter holder 4, the other end of the stud is provided with the nut, and the nut is arranged at the rear portion of the hob cutter holder 4 and is convenient to directly detach the hob cutter holder 4 from the rear portion of the hob disk.
Example 2: a double-shaft double-edge hob fixing device for a normal-pressure hob changing cutter disc is shown in figure 4, the structure of the present embodiment is the same as that of embodiment 1, except that in the present embodiment, the hobs 2 are single-edge hobs, the number of the single-edge hobs is two, and the two single-edge hobs are symmetrically arranged in a hob holder 4; two sides of the two single-edge hobs are symmetrically provided with end covers 2-1, so that the number of the end covers 2-1 and the number of the grooves 8 are four.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A double-shaft double-edge hob fixing device for a normal-pressure hob changing cutterhead comprises a hob barrel (1) and is characterized in that a hob cutter holder (4) is detachably arranged in the hob barrel (1), and at least two hobs (2) are arranged in the hob cutter holder (4); a cutter shaft is arranged in each hob (2), end covers (2-1) are symmetrically arranged on two sides of the cutter shaft, and the end covers (2-1) are connected with a hob cutter holder (4) through a radial tensioning mechanism.
2. The double-shaft double-edge hob fixing device for the atmospheric-pressure tool changing cutterhead, according to claim 1, characterized in that the radial tensioning mechanism comprises a cutter tensioning member (5), the cutter tensioning member (5) is arranged at the rear part of the hob holder (4), and the cutter tensioning member (5) penetrates through the hob holder (4) and is connected with the end cover (2-1).
3. The double-shaft double-edge hob fixing device for the atmospheric-pressure tool changing cutterhead according to claim 1 or 2, characterized in that an axial tensioning mechanism is movably arranged between the hob holder (4) and an end cover (2-1) positioned on the outer side.
4. The atmospheric-pressure tool-changing cutterhead double-shaft double-edged hob fixing device according to claim 3, characterized in that the axial tensioning mechanism comprises an axial tensioning block (3) and a rotating connecting piece (7), an inclined plane I is arranged on one side of the axial tensioning block (3), the other side of the axial tensioning block (3) is matched with the end cover (2-1), and the axial tensioning block (3) is connected with the hob holder (4) through the rotating connecting piece (7); the inclined plane I inclines towards the direction far away from the center of the hob (2), and the inclined plane I is matched with the inner wall of the hob holder (4).
5. The atmospheric-pressure tool changing cutterhead double-shaft double-edge hob fixing device according to claim 4, wherein the rotary connecting piece (7) comprises a nut and a stud, one end of the stud penetrates through the hob holder (4) and then is in threaded connection with the axial tensioning block (3), and the other end of the stud is provided with the nut.
6. The double-shaft double-edge hob fixing device for the atmospheric pressure tool changing cutterhead according to claim 1 or 5, characterized in that a groove (8) is formed in the inner side of the hob holder (4), inclined planes II are symmetrically formed on two sides of the groove (8), and the bottom of the groove (8) is a plane; the end cover (2-1) is arranged in the groove (8), and the end cover (2-1) is matched with the groove (8).
7. The atmospheric-pressure cutter changing cutterhead double-shaft double-edge hob fixing device according to claim 6, characterized in that the cutter shaft and the inner side end cover (2-1) are of an integrally formed structure.
8. The double-shaft double-edged hob fixing device for the atmospheric-pressure tool changing cutterhead according to claim 4, 5 or 7, characterized in that the hob holder (4) is detachably connected with the hob barrel (1) through a holder tension member (6), and the axial tension block (3) is arranged on one side of the hob holder (4).
9. The double-shaft double-edged hob fixing device for the atmospheric-pressure tool changing cutterhead according to claim 8, wherein the hob holder (4) is a cylindrical holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020432433.5U CN211777444U (en) | 2020-03-30 | 2020-03-30 | Double-shaft double-edge hob fixing device for normal-pressure tool changing cutterhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020432433.5U CN211777444U (en) | 2020-03-30 | 2020-03-30 | Double-shaft double-edge hob fixing device for normal-pressure tool changing cutterhead |
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| CN211777444U true CN211777444U (en) | 2020-10-27 |
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| CN202020432433.5U Active CN211777444U (en) | 2020-03-30 | 2020-03-30 | Double-shaft double-edge hob fixing device for normal-pressure tool changing cutterhead |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431598A (en) * | 2021-08-09 | 2021-09-24 | 太原理工大学 | Small-diameter cutter head with novel cutter mounting mode and tunnel boring machine |
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2020
- 2020-03-30 CN CN202020432433.5U patent/CN211777444U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431598A (en) * | 2021-08-09 | 2021-09-24 | 太原理工大学 | Small-diameter cutter head with novel cutter mounting mode and tunnel boring machine |
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