CN110617075A - Shield tunneling cutter head adjacent to sensitive building with ultra-small distance - Google Patents
Shield tunneling cutter head adjacent to sensitive building with ultra-small distance Download PDFInfo
- Publication number
- CN110617075A CN110617075A CN201911044679.3A CN201911044679A CN110617075A CN 110617075 A CN110617075 A CN 110617075A CN 201911044679 A CN201911044679 A CN 201911044679A CN 110617075 A CN110617075 A CN 110617075A
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- Prior art keywords
- cutter
- locking
- mounting hole
- ultra
- threaded rod
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
Abstract
The invention discloses a shield tunneling cutter head close to a sensitive building and with an ultra-small distance, which comprises a cutter head body, and a hobbing cutter group, a scraping cutter group and a cutter group which are fixed on the cutter head body; a threaded rod is arranged on the mounting surface of each cutter of the cutter group, and a mounting hole corresponding to the threaded rod is formed in the cutter head body; the locking mechanism is arranged in the mounting hole and comprises a locking cylinder, a driving mechanism and a bearing; the locking cylinder is rotatably arranged in the mounting hole through the bearing, and a step for limiting the locking cylinder to extend out is arranged in the mounting hole; locking mechanism is connected with a locking section of thick bamboo transmission, and the inside wall of a locking section of thick bamboo is equipped with the internal thread with the threaded rod adaptation, stretches into a locking section of thick bamboo with the threaded rod of cutter and drives a locking section of thick bamboo through locking mechanism and rotate, and then makes the threaded rod stretch into the mounting hole completely and make cutter and blade disc body locking connection. The invention reduces the difficulty of changing the cutter, shortens the downtime and reduces the influence on the adjacent sensitive buildings.
Description
Technical Field
The invention relates to the technical field of shield tunneling machine cutters, in particular to a shield tunneling cutter head close to a sensitive building and with an ultra-small distance.
Background
The construction is carried out in the ultra-small interval section next to the sensitive building, and because the shield tunnel is constructed by penetrating the curve section downwards, the change of the shield posture greatly affects the surrounding during the propelling, particularly the surrounding buildings, in order to reduce the adverse effects caused by the overbreak and the excessive deviation correction of the shield construction in the curve section, the shield tunneling speed is properly reduced, the deviation correction is timely carried out, the duty correction and the less correction are realized, and the synchronous grouting quantity of the shield tail and the grouting quantity of the secondary grouting in the tunnel are timely increased. But at the same time, the construction progress is considered, the completion is completed as early as possible, the normal work of the shield machine is ensured as far as possible, and the abrasion of a shield cutter head and the timely replacement and maintenance of the cutter are mainly considered.
The cutter head in the shield machine is a cutting disk body with a plurality of feeding grooves, is positioned at the forefront part of the shield machine and is used for cutting soil bodies. The shield tunneling machine is characterized in that a cutter head is provided with a plurality of cutters, the cutters comprise a center cutter, a hobbing cutter, scrapers, a super digging cutter and the like, and the cutters are inevitably worn, so that all types of cutters can be detachably connected with the cutter head, the plurality of scrapers and the super digging cutter are arranged on the edge of the cutter head, and when the shield tunneling machine is steered and tunneled, a super digging cutter oil cylinder can be operated to enable the super digging cutter to extend outwards along the radial direction of the cutter head, so that the excavation diameter is enlarged, and the steering of the shield tunneling machine is easy to realize. The scraper and the cutter are both arranged on the cutter head through bolts, and the scraper is in direct contact with objects such as soil, rocks and the like in the tunneling process. Generally, two rows or three rows of mounting holes are formed in the scraper and the cutter, and the scraper and the cutter are directly fixed on the cutter head by inserting bolts into the mounting holes. The cutter replacement is a relatively complex process, generally, after soil in front of a ground surface digging surface is grouted and reinforced, the cutter is replaced in a man-made cabin, and the replacement step mainly comprises the following steps: and S1, removing cement, residual soil and the like in the pressure bin, and removing silt adhered to the pressure bin. And S2, carrying in tools, installing scaffolds, tool hoisting and positioning tools and the like, and preparing for replacement. S3, using the grasping forceps and the tool hoisting and positioning tool to disassemble the old tool and replace the old tool with a new tool, and fastening the bolt for fixing the tool shaft to the specified torque. And S4, after a ring is tunneled, opening the cabin and tightening the cutter bolt again to finish the replacement of the cutter.
The steps expose the defects of the existing shield tunneling cutter head: the replacement steps are multiple, the operation is complex, the replacement time is not further shortened, the downtime is long, the whole shield machine is easy to settle, the stratum and the ground surface are easy to settle, and different degrees of influences are caused on the ground surface, underground structures and adjacent sensitive buildings.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the shield tunneling cutterhead with the ultra-small distance adjacent to the sensitive building, so that the difficulty in replacing cutters is reduced, the downtime is shortened, and the influence on the adjacent sensitive building is reduced.
The invention provides a shield tunneling cutter head close to a sensitive building and with an ultra-small distance, which comprises a cutter head body, and a hobbing cutter group, a scraping cutter group and a cutter group which are fixed on the cutter head body;
a threaded rod is arranged on the mounting surface of each cutter of the cutter group, and a mounting hole corresponding to the threaded rod is formed in the cutter head body;
the locking mechanism is arranged in the mounting hole and comprises a locking cylinder, a driving mechanism and a bearing; the locking cylinder is rotatably arranged in the mounting hole through the bearing, and a step for limiting the locking cylinder to extend out is arranged in the mounting hole; the locking mechanism is in transmission connection with the locking barrel, an inner thread matched with the threaded rod is arranged on the inner side wall of the locking barrel, the threaded rod of the cutter extends into the locking barrel and drives the locking barrel to rotate through the locking mechanism, and then the threaded rod completely extends into the mounting hole and enables the cutter to be in locking connection with the cutter head body.
The invention has the beneficial effects that:
shut down after and do the preparation work of changing the cutter, locking mechanism drives a locking section of thick bamboo reversal, and a locking section of thick bamboo withdraws from old cutter fast through the bearing when the mounting hole reversal, then inserts the threaded rod of new cutter in the mounting hole, inserts the opening part of a locking section of thick bamboo promptly, and last rethread locking mechanism drives a locking section of thick bamboo corotation, and a locking section of thick bamboo stretches into a locking section of thick bamboo completely with the threaded rod when corotation in the mounting hole. After the cutter is locked, the opening end of the telescopic cylinder is tightly propped against the step, and meanwhile, the mounting surface of the cutter is tightly attached to the outer surface of the cutter head body, so that the mounting of a new cutter is quickly completed. The cutter is simple to assemble and disassemble, the installation complexity is greatly reduced, and the installation time is shortened. The total time consumed by replacing the cutter group of the cutter head body is greatly shortened compared with the time consumed by disassembling and assembling in the prior mode, so that the whole sedimentation of the shield machine caused by long downtime is avoided, the possibility of stratum and ground surface sedimentation caused by long downtime is greatly reduced, and the influence on the ground surface, underground structures and adjacent sensitive buildings is weakened.
Preferably, each cutter mounting surface is provided with a rectangular protrusion, and a screw of each cutter is fixed on the rectangular protrusion.
Preferably, a rectangular sinking groove matched with the protrusion is formed in the opening of each mounting hole.
After the threaded rod of the cutter completely extends into the locking cylinder to be locked, the rectangular protrusion is attached to the rectangular sinking groove, so that the limiting effect is achieved, namely the cutter is prevented from rotating along the circumferential direction of the threaded rod; on the other hand, the locking effect is prevented from being influenced by soil, gravel and the like entering the mounting hole or the locking barrel in the tunneling process.
Preferably, the mounting surface of each cutter is provided with a plurality of threaded rods.
Every the cutter all is equipped with two threaded rods, and all is equipped with two mounting holes that correspond with the threaded rod on every installation station of blade disc body, and all is equipped with above-mentioned locking mechanism in every mounting hole, further improves locking effect through two locking mechanism, has further played restriction cutter along the circumferential direction's of threaded rod limiting displacement simultaneously again.
Preferably, the bearing sleeve is arranged outside the locking cylinder, and a plurality of bearings are arranged.
Preferably, gaps are arranged between the inner ring of the bearing and the locking cylinder and between the bearing and the inner side wall of the mounting hole, and a first pressure sensor is arranged between the bearing and the inner side wall of the mounting hole.
The double bearings are movably connected, namely certain gaps are formed between the inner ring and the mounting hole and between the outer ring and the locking cylinder, so that the movable space is increased for the axial movement of the locking cylinder, and the open end of the locking cylinder is only tightly propped against the step to realize locking. In addition, the purpose of the first pressure sensor is to detect the magnitude of the radial force applied to the cutter, and when the cutter head body rotates to different angles, the magnitude of the radial force changes within a certain range, and of course, the magnitude of the radial force also changes correspondingly for different soil layers. If the cutter breaks, the radial force changes obviously, whether the cutter breaks can be monitored by monitoring the radial force in real time, and the monitoring force is further improved.
Preferably, the step is provided with a second pressure sensor in contact with the open end of the locking cylinder.
The second pressure sensor can transmit the pressure between the locking cylinder and the step to a control system of the shield tunneling machine, and the firm condition of each cutter can be tested and monitored in the tunneling process. When the cutter becomes loose, the control system enables the locking mechanism to lock the cutter again, so that the firmness of the cutter in the re-tunneling process is guaranteed.
Preferably, the locking mechanism comprises a driver, a worm, a turbine and a transmission gear, circumferential gear teeth matched with the transmission gear are arranged outside the locking cylinder, the transmission gear is rotatably arranged in an installation cavity communicated with the installation hole, and the transmission gear is meshed with the circumferential gear teeth of the locking cylinder; the worm wheel and the transmission gear rotate coaxially, the driver is fixed in the installation cavity, the worm is connected with an output shaft of the driver, and the driver drives the locking cylinder to rotate by meshing the worm and the worm wheel.
The threaded rod of the cutter is in threaded connection with the locking barrel, and the cutter is large in moment in the tunneling process and simultaneously vibrates irregularly, so that the threaded rod is prevented from driving the locking barrel to rotate reversely and retreats from the locking barrel a little bit. The driver of the locking mechanism adopts a self-locking servo motor, the output shaft of the self-locking servo motor cannot rotate under the condition that the output shaft does not receive an instruction, and the worm turbine also has the characteristic of unidirectional rotation, namely the worm cannot be driven by the turbine to rotate, so that a structure of twice locking is formed. The adoption of the secondary locking mode reduces the possibility that the threaded rod drives the locking barrel to rotate reversely as far as possible, and ensures that the cutter is connected more firmly.
Preferably, the locking mechanisms are provided with two locking mechanisms, and the two locking mechanisms are symmetrically arranged in the mounting cavity.
The double two locking mechanisms improve the torque for driving the locking barrel to rotate, and meanwhile, the locking barrel is uniformly stressed due to the adoption of symmetrical arrangement.
Preferably, the cutter head body is provided with oil filling holes communicated with the installation cavities, and the oil filling holes are provided with hole covers.
The oil filling hole leads to the meshing part of the worm and the worm wheel and the meshing part of the transmission gear and the locking cylinder, and the normal operation of the locking mechanism is ensured by adding quantitative lubricating oil in the maintenance process after one project is completed.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 2;
FIG. 4 is a left side view of FIG. 2;
FIG. 5 is a schematic view of the cutter shown in FIG. 4 after being hidden;
FIG. 6 is a schematic structural diagram of a cutter in the present embodiment;
fig. 7 is a right side view of fig. 6.
In the drawing, the cutter head comprises a cutter head body 1, a hob group 2, a scraper group 3, a cutter group 4, a cutter 5, a threaded rod 6, a mounting surface 7, a mounting hole 8, a locking cylinder 9, a bearing 10, a step 11, a groove 12, a first pressure sensor 13, a second pressure sensor 14, a driver 15, a worm 16, a turbine 17, a transmission gear 18, a circumferential gear 19, a rectangular protrusion 20, a rectangular sink 21 and a locking mechanism 22.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
As shown in fig. 1, the shield tunneling cutterhead with an ultra-small distance next to sensitive buildings of the present embodiment includes a cutterhead body 1, and a hob group 2, a scraper group 3 and a cutter group 4 fixed to the cutterhead body 1. The hob group 2 comprises a plurality of hobs, the blade group 3 comprises a plurality of blades and the blade group 4 comprises a plurality of cutters 5, whereas the specific number and the specific distribution of hobs, blades and cutters 5 are arranged according to the specific rock formation. The embodiment optimizes the connection mode between the cutter 5 and the cutter head body 1, and aims to avoid the integral settlement of the shield machine caused by long downtime, greatly reduce the possibility of causing stratum and ground surface settlement, and weaken the influence on the ground surface, underground structures and adjacent sensitive buildings. In this embodiment, the cutter 5 is detachably connected to the cutter head body 1 in a threaded connection manner, and the specific connection manner is as follows:
as shown in fig. 6 and 7, a threaded rod 6 is arranged on the mounting surface 7 of each cutter 5 of the cutter group 4, and the cutter head body 1 is provided with mounting holes 8 corresponding to the threaded rods 6. As shown in fig. 2 and 3, a locking mechanism 22 is provided in each mounting hole 8, and the locking mechanism 22 includes a locking cylinder 9, a driving mechanism and a bearing 10. The locking cylinder 9 is rotatably mounted in the mounting hole 8 through the bearing 10, and a step 11 for limiting the extension of the locking cylinder 9 is arranged in the mounting hole 8. The central axis coincidence of a locking section of thick bamboo 9 and mounting hole 8 and the internal diameter size of a locking section of thick bamboo 9 is the same with the internal diameter size of mounting hole 8, in addition, the outside of a locking section of thick bamboo 9 and bearing 10 are located to the bearing 10 cover and are equipped with two. The side wall of the mounting hole 8 is provided with a groove 12 for mounting the bearing 10, and the groove 12 is provided with a first pressure sensor 13 therein, i.e. the first pressure sensor 13 is arranged between the bearing 10 and the inner side wall of the mounting hole 8. The inside wall of a locking section of thick bamboo 9 is equipped with the internal thread with threaded rod 6 adaptation, and locking mechanical system 22 is connected with a locking section of thick bamboo 9 transmission, stretches into a locking section of thick bamboo 9 with the threaded rod 6 of cutter 5 and drives a locking section of thick bamboo 9 through locking mechanical system 22 and rotate, and then makes threaded rod 6 stretch into mounting hole 8 completely and make cutter 5 and blade disc body 1 locking connection. The purpose of the first pressure sensor 13 is to detect the magnitude of the radial force applied to the cutter 5, and the cutter head body 1 rotates to different angles, and the magnitude of the radial force varies within a certain range, and of course, varies correspondingly for different soil layers. If the cutter 5 breaks, the radial force changes obviously, the condition that whether the cutter 5 breaks can be monitored by monitoring the radial force in real time, and the monitoring force is further improved. In this embodiment, the double bearings 10 are movably connected, specifically, gaps are provided between the inner ring of the bearing 10 and the locking cylinder 9 and between the inner side walls of the bearing 10 and the mounting hole 8, that is, certain gaps are provided between the inner ring and the mounting hole 8 and between the outer ring and the locking cylinder 9, so as to increase a movement space for the axial movement of the locking cylinder 9, and ensure that the opening end of the locking cylinder 9 is only tightly pressed against the step 11 to achieve locking. In addition, a second pressure sensor 14 which is in contact with the opening end of the locking cylinder 9 is arranged on the step 11, the second pressure sensor 14 can transmit the pressure between the locking cylinder 9 and the step 11 to a control system of the shield tunneling machine, and the purpose of testing and monitoring the firmness condition of each cutter 5 in the tunneling process is achieved. When the cutter 5 becomes loose, the control system enables the locking mechanism 22 to lock the cutter 5 again, so that the firmness of the cutter 5 in the re-tunneling process is ensured.
In this embodiment, each locking mechanism 22 comprises a driver 15, a worm 16, a worm wheel 17 and a transmission gear 18, part of the outer surface of the locking cylinder 9 is provided with circumferential gear teeth 19 adapted to the transmission gear 18, and part of the outer surface is the outer surface far away from the opening of the locking cylinder 9. The transmission gear 18 is rotatably arranged in the installation cavity communicated with the installation hole 8, and the transmission gear 18 is meshed with the circumferential gear 19 of the locking cylinder 9. Since the locking cylinder 9 can move in a translational way, i.e. in an axial way, towards the opening of the mounting hole 8 when the cutter 5 is locked, the length of the circumferential gear teeth 19 of the locking cylinder 9 is greater than the axial length of the transmission gear 18, so that the locking cylinder 9 still keeps the meshing relation with the transmission gear 18 during the translational way. The worm wheel 17 and the transmission gear 18 rotate coaxially, the driver 15 is fixed in the installation cavity, the worm 16 is connected with an output shaft of the driver 15, and the driver 15 drives the locking cylinder 9 to rotate by meshing the worm 16 and the worm wheel 17.
In addition, the locking mechanism 22 in this embodiment is provided with two locking mechanisms 22, and the two locking mechanisms 22 are symmetrically arranged in the installation cavity. The working principle of the locking mechanism 22 is as follows:
the driver 15 drives the worm 16 to rotate, the worm 16 drives the worm wheel 17 to rotate, the worm wheel 17 drives the transmission gear 18 to rotate, and finally the transmission gear 18 drives the locking cylinder 9 to rotate. The double locking mechanisms 22 improve the torque for driving the locking cylinder 9 to rotate, and meanwhile, the symmetrical arrangement is adopted, so that the locking cylinder 9 is stressed uniformly. The threaded rod 6 of the cutter 5 is in threaded connection with the locking barrel 9, and the cutter 5 is subjected to large moment in the tunneling process and is accompanied by irregular vibration, so that the threaded rod 6 is prevented from driving the locking barrel 9 to rotate reversely, and the locking barrel 9 is prevented from being withdrawn from the locking barrel 9 a little bit. The driver 15 of the locking mechanism 22 adopts a self-locking servo motor, the output shaft of the self-locking servo motor cannot rotate when the output shaft does not receive a command, and the worm 16 and the worm wheel 17 also have the characteristic of unidirectional rotation, namely the worm wheel 17 cannot drive the worm 16 to rotate, so that a structure of twice locking is formed. The secondary locking mode is adopted, the possibility that the threaded rod 6 drives the locking cylinder 9 to rotate reversely is reduced as far as possible, and the cutter 5 is ensured to be connected more firmly. Since the engagement between the worm 16 and the worm wheel 17 and the engagement between the transmission gear 18 and the lock cylinder 9 require regular lubrication, the cutter head body 1 in this embodiment is provided with an oil hole communicating with each of the installation cavities and the oil hole is provided with a hole cover. The oil filling hole leads to the meshing position of the worm 16 and the worm wheel 17 and the meshing position of the transmission gear 18 and the locking cylinder 9, and the normal operation of the locking mechanism 22 is ensured by adding quantitative lubricating oil in the maintenance process after completing a project.
The specific steps of replacing the cutter 5 are as follows: shut down after and make the preparation work of changing cutter 5, servo motor drives a locking section of thick bamboo 9 reversal, locking section of thick bamboo 9 withdraws from old cutter 5 fast through bearing 10 when the reversal in mounting hole 8, then insert the threaded rod 6 of new cutter 5 in the mounting hole 8, insert the opening part of a locking section of thick bamboo 9 promptly, drive a locking section of thick bamboo 9 corotation through servo motor at last again, a locking section of thick bamboo 9 stretches into a locking section of thick bamboo 9 completely with threaded rod 6 in the corotation in mounting hole 8. After the cutter 5 is locked, the opening end of the telescopic cylinder is tightly pressed against the step 11, and meanwhile, the mounting surface 7 of the cutter 5 is tightly attached to the outer surface of the cutter head body 1, so that the mounting of a new cutter 5 is completed quickly. The servo motor is electrically connected with a control system of the shield tunneling machine, and the control system controls the tool changing process.
Because there are a large amount of earth, gravel and so on in the process of tunnelling, in order to avoid earth, gravel to get into mounting hole 8 and locking section of thick bamboo 9, every cutter 5 installation face 7 all is equipped with rectangular protrusion 20 in this embodiment, and the screw rod of cutter 5 is fixed in on the rectangular protrusion 20. The opening of each mounting hole 8 is provided with a rectangular sinking groove 21 matched with the protrusion. After the threaded rod 6 of the cutter 5 completely extends into the locking barrel 9 to be locked, the rectangular protrusion 20 is attached to the rectangular sinking groove 21, and soil, gravel and the like are effectively prevented from entering the mounting hole 8 or the locking barrel 9 in the tunneling process to influence the locking effect. And the rectangular protrusion 20 and the rectangular sinking groove 21 can also play a role in limiting after being attached, namely, the cutter 5 is prevented from rotating along the circumferential direction of the threaded rod 6. In addition, as shown in fig. 4 and 5, the mounting surface 7 of each of the cutters 5 is provided with two threaded rods 6. Every cutter 5 all is equipped with two threaded rods 6, and all is equipped with two mounting holes 8 that correspond with threaded rod 6 on every installation station of blade disc body 1, and all is equipped with above-mentioned locking mechanism 22 in every mounting hole 8, further improves the locking effect through two locking mechanism 22, has further played restriction cutter 5 along the circumferential direction's of threaded rod 6 limiting displacement simultaneously again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A shield tunneling cutterhead close to a sensitive building and with an ultra-small distance comprises a cutterhead body, and a hobbing cutter group, a scraping cutter group and a cutter group which are fixed on the cutterhead body;
the method is characterized in that: a threaded rod is arranged on the mounting surface of each cutter of the cutter group, and a mounting hole corresponding to the threaded rod is formed in the cutter head body;
the locking mechanism is arranged in the mounting hole and comprises a locking cylinder, a driving mechanism and a bearing; the locking cylinder is rotatably arranged in the mounting hole through the bearing, and a step for limiting the locking cylinder to extend out is arranged in the mounting hole; the locking mechanism is in transmission connection with the locking barrel, an inner thread matched with the threaded rod is arranged on the inner side wall of the locking barrel, the threaded rod of the cutter extends into the locking barrel and drives the locking barrel to rotate through the locking mechanism, and then the threaded rod completely extends into the mounting hole and enables the cutter to be in locking connection with the cutter head body.
2. The ultra-small pitch shield tunneling cutterhead for close proximity sensitive buildings according to claim 1, wherein: each cutter mounting surface is provided with a rectangular protrusion, and a screw rod of each cutter is fixed on the rectangular protrusion.
3. The ultra-small pitch shield tunneling cutterhead for close proximity sensitive buildings according to claim 2, wherein: the opening of each mounting hole is provided with a rectangular sinking groove matched with the protrusion.
4. The ultra-small pitch shield tunneling cutterhead for close proximity sensitive buildings according to claim 1, wherein: and a plurality of threaded rods are arranged on the mounting surface of each cutter.
5. The ultra-small pitch shield tunneling cutterhead for close proximity sensitive buildings according to claim 1, wherein: the bearing sleeve is arranged outside the locking cylinder, and a plurality of bearings are arranged.
6. The ultra-small pitch shield tunneling cutterhead in close proximity to sensitive buildings according to claim 5, wherein: gaps are arranged between the inner ring of the bearing and the locking cylinder and between the bearing and the inner side wall of the mounting hole, and a first pressure sensor is arranged between the bearing and the inner side wall of the mounting hole.
7. The ultra-small pitch shield tunneling cutterhead for close proximity sensitive buildings according to claim 6, wherein: the step is provided with a second pressure sensor in contact with the open end of the locking cylinder.
8. The ultra-small pitch shield tunneling cutterhead for close proximity sensitive buildings according to claim 1, wherein: the locking mechanism comprises a driver, a worm, a turbine and a transmission gear, circumferential gear teeth matched with the transmission gear are arranged outside the locking cylinder, the transmission gear is rotatably arranged in an installation cavity communicated with the installation hole, and the transmission gear is meshed with the circumferential gear teeth of the locking cylinder; the worm wheel and the transmission gear rotate coaxially, the driver is fixed in the installation cavity, the worm is connected with an output shaft of the driver, and the driver drives the locking cylinder to rotate by meshing the worm and the worm wheel.
9. The ultra-small pitch shield tunneling cutterhead for close proximity sensitive buildings according to claim 8, wherein: the locking mechanism is provided with two locking mechanisms which are symmetrically arranged in the mounting cavity.
10. The ultra-small pitch shield tunneling cutterhead for close proximity sensitive buildings according to claim 8, wherein: the cutter head body is provided with oil filling holes communicated with each installation cavity, and the oil filling holes are provided with hole covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911044679.3A CN110617075B (en) | 2019-10-30 | 2019-10-30 | Shield tunneling cutter head adjacent to sensitive building with ultra-small distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911044679.3A CN110617075B (en) | 2019-10-30 | 2019-10-30 | Shield tunneling cutter head adjacent to sensitive building with ultra-small distance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110617075A true CN110617075A (en) | 2019-12-27 |
| CN110617075B CN110617075B (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911044679.3A Active CN110617075B (en) | 2019-10-30 | 2019-10-30 | Shield tunneling cutter head adjacent to sensitive building with ultra-small distance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586072A (en) * | 2021-08-13 | 2021-11-02 | 中铁开发投资集团有限公司 | Cutter head of shield machine |
| CN113586071A (en) * | 2021-08-13 | 2021-11-02 | 中铁开发投资集团有限公司 | Fast-assembling shield cutter head and cutter changing method of shield machine cutter head |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06137081A (en) * | 1992-10-21 | 1994-05-17 | Komatsu Ltd | Cutter bit changing device of shield excavator |
| JPH09100697A (en) * | 1995-10-06 | 1997-04-15 | Mitsubishi Heavy Ind Ltd | Cutter bit replacing device |
| JPH10169374A (en) * | 1996-12-06 | 1998-06-23 | Komatsu Ltd | Tunnel excavator |
| JPH10266784A (en) * | 1997-03-25 | 1998-10-06 | Nkk Corp | Movable bit unit of shield boring machine |
| JP2001159297A (en) * | 1999-09-22 | 2001-06-12 | Hitachi Zosen Corp | Shield machine |
| JP2004068350A (en) * | 2002-08-05 | 2004-03-04 | Kumagai Gumi Co Ltd | Shield machine and exchanging method for cutter bit |
| CN101936169A (en) * | 2010-08-24 | 2011-01-05 | 中铁隧道装备制造有限公司 | Cutting device with small-range diameter-variable function of soft rock shield machine |
| CN109139029A (en) * | 2018-11-12 | 2019-01-04 | 德阳宏源机电工程有限责任公司 | Telescopic cutter head of shield machine |
-
2019
- 2019-10-30 CN CN201911044679.3A patent/CN110617075B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06137081A (en) * | 1992-10-21 | 1994-05-17 | Komatsu Ltd | Cutter bit changing device of shield excavator |
| JPH09100697A (en) * | 1995-10-06 | 1997-04-15 | Mitsubishi Heavy Ind Ltd | Cutter bit replacing device |
| JPH10169374A (en) * | 1996-12-06 | 1998-06-23 | Komatsu Ltd | Tunnel excavator |
| JPH10266784A (en) * | 1997-03-25 | 1998-10-06 | Nkk Corp | Movable bit unit of shield boring machine |
| JP2001159297A (en) * | 1999-09-22 | 2001-06-12 | Hitachi Zosen Corp | Shield machine |
| JP2004068350A (en) * | 2002-08-05 | 2004-03-04 | Kumagai Gumi Co Ltd | Shield machine and exchanging method for cutter bit |
| CN101936169A (en) * | 2010-08-24 | 2011-01-05 | 中铁隧道装备制造有限公司 | Cutting device with small-range diameter-variable function of soft rock shield machine |
| CN109139029A (en) * | 2018-11-12 | 2019-01-04 | 德阳宏源机电工程有限责任公司 | Telescopic cutter head of shield machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586072A (en) * | 2021-08-13 | 2021-11-02 | 中铁开发投资集团有限公司 | Cutter head of shield machine |
| CN113586071A (en) * | 2021-08-13 | 2021-11-02 | 中铁开发投资集团有限公司 | Fast-assembling shield cutter head and cutter changing method of shield machine cutter head |
| CN113586071B (en) * | 2021-08-13 | 2023-12-12 | 中铁开发投资集团有限公司 | Quick-mounting shield cutter head and cutter changing method of shield machine cutter head |
| CN113586072B (en) * | 2021-08-13 | 2023-12-12 | 中铁开发投资集团有限公司 | Cutter head of shield tunneling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110617075B (en) | 2021-05-14 |
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