CN216342153U - Spherical drill head type cutter head structure of shield machine - Google Patents
Spherical drill head type cutter head structure of shield machine Download PDFInfo
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- CN216342153U CN216342153U CN202122560024.0U CN202122560024U CN216342153U CN 216342153 U CN216342153 U CN 216342153U CN 202122560024 U CN202122560024 U CN 202122560024U CN 216342153 U CN216342153 U CN 216342153U
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Abstract
The utility model relates to a spherical drill head type cutter head structure of a shield machine, which is arranged on a shield body, wherein the advancing end of the shield body is provided with a spherical cutter head and a cutter positioned on the spherical cutter head, the circle center of the spherical cutter head is provided with a central telescopic cutter assembly, and the central telescopic cutter assembly comprises: the driving device drives the spherical cutter head to rotate, and the spherical cutter head drives the central rotary joint to rotate; the center rotary joint penetrates through the circle center of the spherical cutter head, and a center cutter is arranged on the end part of the center rotary joint, which extends out of the spherical cutter head; the rod body of the central rotary joint is also provided with stirring blades, and the spherical cutter head in a spherical structure and the main beam in a linear arc or spiral arc structure are adopted, so that the driving of muck in the shield excavation process is facilitated; can more effectively prevent the solidification of the residue soil in the soil bin.
Description
Technical Field
The utility model relates to the technical field of shield tunneling machines, in particular to a spherical drill bit type cutter head structure of a shield tunneling machine.
Background
The shield technology has become a main technology for urban subway excavation and construction due to the unique advantages of small disturbance to the stratum, small influence on urban functions and the like.
The right-angle cutter head structure is mostly adopted by the conventional shield tunneling machine, the cutter head structure is simple to manufacture and convenient to install, but the soil bin space is smaller, and the movement of dregs is not facilitated. Particularly, in small tunnels, the space of the soil bin is smaller. And because shield constructs quick-witted self structural feature, the stability and the cutting efficiency of right angle shape blade disc in general stratum are limited, under special operating mode, for example: when the tunnel is tunneled in a cross mode with the original forming tunnel, the tunnel is difficult to be suitable for the excavation work at the cross point.
SUMMERY OF THE UTILITY MODEL
The applicant provides a spherical drill head type cutter head structure of shield machine rational in infrastructure to the shortcoming among the above-mentioned prior art, adopts the spherical cutter head, combines sharp, spiral arc's girder or girder, and when increase and face area of contact, the interior space of spherical cutter head is bigger, is convenient for arrange the sediment to improve cutting efficiency and take native ability.
The technical scheme adopted by the utility model is as follows:
a spherical drilling head type cutter head structure of a shield machine is arranged on a shield body, a spherical cutter head and a cutter positioned on the spherical cutter head are arranged at the advancing end of the shield body,
the centre of a circle department of sphere blade disc is equipped with the flexible cutter subassembly in center, the flexible cutter subassembly in center includes: the driving device drives the spherical cutter head to rotate, and the spherical cutter head drives the central rotary joint to rotate; the center rotary joint penetrates through the circle center of the spherical cutter head, and a center cutter is arranged on the end part of the center rotary joint, which extends out of the spherical cutter head; the rod body of the central rotary joint is also provided with a stirring blade,
a piston structure is arranged in the central rotary joint and comprises an oil cavity positioned in the central rotary joint and a piston body sliding in the oil cavity, two sides of the piston body are respectively connected with a connecting block and a push rod, an oil inlet oil way is arranged in the connecting block, one end of the oil inlet oil way is connected with a hydraulic pipeline at the output end of the hydraulic pump, and the other end of the oil inlet oil way is communicated with the oil cavity; the central drill rod is connected with the central cutter.
The spherical cutter head comprises an annular cutter rest base and arc main beams or spiral main beams which are annularly arrayed on the cutter rest base.
One end of the arc-shaped main beam or the spiral main beam is fixedly connected with the tool rest base, the other end of the arc-shaped main beam or the spiral main beam extends to one side away from the shield body, one end of the arc-shaped main beam or the spiral main beam departing from the tool rest base is converged to one point on the spherical surface where the spherical surface cutter head is located, and the point corresponds to the circle center position of the hemispherical spherical surface cutter head.
The tool rest base is further provided with support beams, the support beams are arranged in an annular array mode, and intersection points of the support beams are located at the circle center of the tool rest base.
Stirring vane on the center rotary joint can dismantle between the rotary joint of center and be connected, and the excircle surface of center rotary joint inlays establishes the installation piece, and bolt fastening is connected between stirring vane and the installation piece.
And a plugging block is additionally arranged at the mounting position of the mounting block on the central rotary joint.
The rod body on the central rotary joint and the connecting block are internally provided with mutually communicated flushing channels, and the output ends of the flushing channels are positioned on the outer wall of the connecting block.
The output end of the flushing channel corresponds to the position in the soil bin.
The utility model has the following beneficial effects:
according to the utility model, the spherical cutter head with a spherical structure and the linear arc or spiral arc main beam structure are adopted, so that the slag soil in the shield excavation process can be driven more conveniently, the cutting efficiency is high, the soil carrying capacity is strong, and the guide performance is good;
meanwhile, a central rotary joint is designed to drive a central cutter to extend out in advance for drilling, so that the stratum condition can be known more quickly and conveniently compared with the traditional shield machine, and the construction is more convenient and safer;
the utility model is provided with high-pressure washing on the basis of the design of the stirring blade, and when the device is used for different stratums, the stirring blade stirs the muck, and the high-pressure washing action is combined, so that the muck solidification in the soil bin can be effectively prevented.
The cutter head adopts a spherical structure, the main beam or the scraper adopts a linear arc-shaped or spiral arc-shaped structure, the slag soil in the shield excavation process can be driven more conveniently, the cutting efficiency is high, the soil carrying capacity is high, the guiding performance is good, and meanwhile, the center advanced drilling device is designed, so that the stratum condition can be known more quickly and conveniently compared with the traditional shield machine, and the construction is more convenient and safer. The cutter head adopts a spherical structure, and compared with the forward movement of a soil bin of a traditional shield machine, the space is larger, the slag soil flow and the cutter changing inspection operation are convenient, meanwhile, the forward movement of the soil bin can shorten the length of a front shield, and the small-curve tunneling and turning of the shield machine are more convenient. The cutter head adopts a spherical structure, compared with the traditional shield machine, the gravity center of a part of the main machine moves backwards relative to the tunnel face, so that the problem that the shield machine is easy to plant heads in part of stratums can be effectively solved, and particularly, the posture problem of the shield machine is solved in weak soil stratums.
The side section of the whole spherical cutter head is seen as a spherical structure, so that the soil bin moves forwards relative to the cutter head with a conventional plane structure, the length of the shield body can be effectively shortened under the same design condition, the shield body is short, the weight is light, in the shield construction process, the small curve turning is very favorable, the shorter the shield body is, the easier the turning is, the smaller curve can be adapted, and the small curve tunneling and turning of the shield machine are convenient. And because the cutter head adopts a spherical structure, the space of the soil bin of the shield tunneling machine is larger relative to that of a plane cutter head, so that the slag soil flow, the cutter changing inspection operation and the like are facilitated.
Drawings
Fig. 1 is a side view of the overall structure of the present invention.
Figure 2 is a side view of the spherical cutterhead of the present invention.
Fig. 3 is a front view of the spherical cutter head of the present invention.
Fig. 4 is a rear view of the spherical cutter head of the present invention.
Figure 5 is a side view of a spherical cutterhead in accordance with another embodiment of the present invention.
Fig. 6 is a front view of a spherical cutterhead in accordance with another embodiment of the present invention.
Fig. 7 is a rear view of a spherical cutterhead in accordance with another embodiment of the present invention.
FIG. 8 is a schematic view of a center swivel joint structure according to the present invention.
Fig. 9 is a schematic view showing the connection between the stirring vanes and the central rotary joint of the present invention.
Wherein: 1. a shield body; 2. a spherical cutter head; 3. a central telescoping cutter assembly; 4. a drive device; 5. mounting blocks; 6. flushing the channel; 7. a soil bin; 8. an oil inlet path;
201. a tool holder base; 202. a main beam; 203. a support beam;
301. a central swivel joint; 302. a center cutter; 303. a stirring blade; 304. an oil chamber; 305. a piston body; 306. connecting blocks; 307. a push rod.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-9, the spherical drill cutter head structure of the shield machine of the present embodiment is disposed on the shield body 1, the advancing end of the shield body 1 is provided with the spherical cutter head 2 and the cutter located on the spherical cutter head 2,
centre of a circle department of spherical blade disc 2 is equipped with central flexible cutter unit spare 3, and central flexible cutter unit spare 3 includes: the central rotary joint 301 is positioned at the circle center position of the spherical cutter head 2, the driving device 4 is arranged in the shield body 1, the driving device 4 drives the spherical cutter head 2, the spherical cutter head 2 drives the central rotary joint 301 to rotate, the central rotary joint 301 penetrates through the circle center position of the spherical cutter head 2, and the end part of the central rotary joint 301, which extends out of the spherical cutter head 2, is provided with a central cutter 302; the stirring blade 303 is further arranged on the rod body of the central rotary joint 301, a piston structure is arranged inside the central rotary joint 301, the piston structure comprises an oil cavity 304 positioned in the central rotary joint 301 and a piston body 305 sliding in the oil cavity 304, two sides of the piston body 305 are respectively connected with a connecting block 306 and a push rod 307, an oil inlet oil way 8 is arranged in the connecting block 306, one end of the oil inlet oil way 8 is connected with a hydraulic pipeline at the output end of the hydraulic pump, oil output by the hydraulic pump is conveyed to the position through a hydraulic system, and the movement of the components is controlled; the other end is communicated with the oil chamber 304; the push rod 307 is connected with the central cutter 302;
the central cutter 302 is embedded with a sensor, and a sensor lead is embedded in the push rod 307 and connected with an external power supply and a computer.
The spherical cutter head 2 comprises an annular cutter frame base 201, and arc main beams 202 or spiral main beams 202 which are annularly arrayed on the cutter frame base 201.
One end of the arc main beam 202 or the spiral main beam 202 is fixedly connected with the tool rest base 201, the other end extends to one side departing from the shield body 1, and one end of the arc main beam 202 or the spiral main beam 202 departing from the tool rest base 201 is converged to one point on the spherical surface where the spherical cutter head 2 is located, and the point corresponds to the circle center position of the hemispherical spherical cutter head 2.
The tool rest base 201 is further provided with support beams 203, the support beams 203 are arranged in an annular array, and the intersection points of the support beams 203 are located at the circle center of the tool rest base 201.
The stirring blade 303 on the central rotary joint 301 is detachably connected with the central rotary joint 301, the mounting block 5 is embedded on the outer circle surface of the central rotary joint 301, and the stirring blade 303 is tightly connected with the mounting block 5 through bolts.
The mounting position of the mounting block 5 on the central rotary joint 301 is also provided with a plugging block.
The inside of the rod body on the central rotary joint 301 and the inside of the connecting block 306 are provided with the mutually communicated flushing channels 6, and the output ends of the flushing channels 6 are positioned on the outer wall of the connecting block 306.
The position of the output end of the flushing channel 6 corresponds to the position of the soil bin 7 of the shield body 1.
The specific structure and working process of the embodiment are as follows:
as shown in fig. 1 and 2, a spherical cutter head 2 is arranged at the advancing end of the shield tunneling machine, the structure of the spherical cutter head 2 refers to fig. 2-4, and the side view of the whole spherical cutter head 2 is semicircular, so that the soil bin 7 moves forwards relative to a tool rest with a conventional planar structure, and under the same other design conditions, the length of the shield body 1 can be effectively shortened, and the shield tunneling machine can more conveniently carry out small-curve tunneling and turning. And because the spherical structure of the cutter rest, compared with a plane cutter shield machine, the soil bin 7 has larger space, thereby facilitating the operation of slag soil flowing, cutter changing inspection and the like.
Fig. 2 to 4 show one embodiment of the present embodiment, in which the main beams 202 for mounting the tool are spiral-shaped, and the spiral direction of each main beam 202 is the same, and finally converges to a point on the spherical surface of the spherical cutter head 2. At this point, a central rotary joint 301 is correspondingly installed, and a central cutter 302 is arranged at one end of the central rotary joint 301 extending out of the spherical cutter head 2.
As shown in fig. 5-7, another embodiment of the present invention is shown, in which the main beam 202 for mounting the tool is in a general circular arc shape, and the main beam 202 is located on a section of the spherical cutterhead 2 passing through the center of a circle.
In the above two embodiments, the support beam 203 and the tool rest base 201 are located on the surface of the sphere where the spherical cutterhead 2 is located, and the support beam 203 is linear and intersects with the center of the spherical cutterhead 2.
As shown in fig. 7 and 8, the central telescopic tool has an integral structure, the central telescopic tool includes a central rotary joint 301, and the driving device 4 in this embodiment is driven by a driving motor with reference to fig. 1. The two ends of the central rotary joint 301 are respectively provided with a central cutter 302 and a connecting block 306, and the central cutter 302 extends out of the spherical cutter head 2 and is positioned on the most protruded point of the spherical cutter head 2. The connecting block 306 is connected with the central rotary joint 301, an oil cylinder is arranged on one side of the connecting block 306, which is far away from the central rotary joint 301, the specific structure of the oil cylinder is the prior art, the scheme is not improved, and the details are not repeated; an oil inlet passage 8 is arranged in the connecting block 306. The center swivel joint 301 is hollow inside, and the hollow space is a track along which the push rod 307 moves. A piston body 305 is slidably connected to the hollow oil chamber 304, and a push rod 307 is connected to the piston body 305, and the push rod 307 is connected to the center cutter 302. According to the orientation in fig. 8, the other oil path below the oil inlet path 8 is the other oil inlet path, and when the two oil paths work, the oil inlet path 8 takes oil to push the piston body 305 to extend, and the push rod 307 extends to drive the central cutter 302 to extend. If the other oil inlet path is filled with oil, the oil inlet path 8 correspondingly discharges oil, and the push rod 307 retracts to drive the central cutter 302 to retract. The piston body 305, the push rod 307 and the central cutter 302 form a central drill rod, and a photoelectric sensor is arranged in the central drill rod and can detect the front stratum, the hardness or one of the components. Photoelectric sensor sets up in the position that the tool bit contacted the geology first, and the lead wire is buried underground inside the drilling rod, and the mounting means of sensor is prior art, and here is not repeated.
The outer circle surface of the central rotary joint 301 is provided with a groove, a mounting block 5 is arranged in the groove, and the mounting block 5 is connected with a stirring blade 303 through a bolt. The stirring blades 303 are detachably arranged, and when the stratum is easy to form mud cakes or soil blocks to be solidified, the stirring blades 303 are installed; when the stratum has bigger stone and easily breaks stirring vane 303, pull down stirring vane 303 the back, block up the fluting position with corresponding jam piece and block up.
When the spherical cutter head 2 is used, the inside of the soil bin 7 can be washed through the washing channel 6, and the washing channel 6 is also communicated to the central cutter 302 to wash the central cutter 302. A flange plug is correspondingly arranged at the position where the flushing channel 6 is communicated with the central cutter 302, the plug is opened when the central cutter 302 needs to be flushed, and the plug is closed when the central cutter 302 does not need to be flushed. The flange plug is a common part, and is not described herein. The stirring blade 303 stirs the residue soil in the soil bin 7 in the soft soil stratum.
Other solutions can be added into the flushing channel 6, and the corresponding solutions are selected to be sprayed according to different working conditions, so that the purpose of improving the residue soil is achieved.
The cutters on the spherical cutter head 2 and the central cutter 302 can adopt different cutters according to actual working conditions to cut or roll and excavate the stratum. The number and distribution of the main beams 202 can be adjusted, increased or decreased according to the actual conditions of the stratum. The central cutter 302 is cemented carbide to prevent wear.
The utility model has the advantages that: the device is suitable for construction of various stratums, when data in equipment excavation fluctuate or are abnormal, stratum relaxation pressure is reduced, or when other unexpected geology occurs, shutdown processing can be carried out, and the geology is detected by the drill rod. Even if the excavation retardation does not occur, the tentative drilling can be performed in real time so as to improve the construction safety.
The spherical cutter head can be directly applied to the secondary excavation of the existing tunnel in the construction process, namely the excavation working condition of a new tunnel which penetrates through the original tunnel in a crossed manner. The shield machine can also be applied to small-diameter turning tunnels, and the problem of construction limitation of the existing shield machine is solved.
The above description is intended to illustrate the present invention and not to limit the present invention, which is defined by the scope of the claims, and may be modified in any manner within the scope of the present invention.
Claims (8)
1. The utility model provides a shield constructs spherical drill head blade disc structure of machine, locates on shield body (1), its characterized in that: the advancing end of the shield body (1) is provided with a spherical cutter head (2) and a cutter positioned on the spherical cutter head (2),
the centre of a circle department of sphere blade disc (2) is equipped with central flexible cutter subassembly (3), central flexible cutter subassembly (3) include: the center rotary joint (301) is positioned at the circle center of the spherical cutter head (2), a driving device (4) is arranged in the shield body (1), the driving device (4) drives the spherical cutter head (2), and the spherical cutter head (2) drives the center rotary joint (301) to rotate; the center rotary joint (301) penetrates through the circle center of the spherical cutter head (2), and a center cutter (302) is installed on the end part, extending out of the spherical cutter head (2), of the center rotary joint (301); a stirring blade (303) is also arranged on the rod body of the central rotary joint (301),
a piston structure is arranged in the central rotary joint (301), the piston structure comprises an oil cavity (304) located in the central rotary joint (301) and a piston body (305) sliding in the oil cavity (304), two sides of the piston body (305) are respectively connected with a connecting block (306) and a push rod (307), an oil inlet oil way (8) is arranged in the connecting block (306), one end of the oil inlet oil way (8) is connected with a hydraulic pipeline at the output end of an external hydraulic pump, and the other end of the oil inlet oil way is communicated with the oil cavity (304); the push rod (307) is connected with the central cutter (302);
the sensor is embedded in the center cutter (302), and a sensor lead is embedded in the push rod (307) and connected with an external power supply and a computer.
2. The spherical drill head type cutter head structure of the shield tunneling machine according to claim 1, wherein: the spherical cutter head (2) comprises an annular cutter rest base (201) and an arc main beam (202) or a spiral main beam (202) which is annularly arrayed on the cutter rest base (201).
3. The spherical drill head type cutter head structure of the shield tunneling machine according to claim 2, wherein: arc girder (202) or spiral girder (202) one end and knife rest base (201) fixed connection, the other end extends to the one side that deviates from the shield body (1), arc girder (202) or spiral girder (202) one end that deviates from knife rest base (201) collects to the one point on sphere of sphere blade disc (2) place, and this point corresponds to the centre of a circle position of hemisphere sphere blade disc (2).
4. The spherical drill head type cutter head structure of the shield tunneling machine according to claim 2, wherein: the tool rest base (201) is further provided with support beams (203), the support beams (203) are arranged in an annular array mode, and intersection points of the support beams (203) are located at the circle center of the tool rest base (201).
5. The spherical drill head type cutter head structure of the shield tunneling machine according to claim 1, wherein: stirring vane (303) on center rotary joint (301) can dismantle between center rotary joint (301) and be connected, and installation piece (5) are inlayed to the excircle surface of center rotary joint (301), and bolt fastening is connected between stirring vane (303) and installation piece (5).
6. The spherical drill head type cutter head structure of the shield tunneling machine according to claim 1, wherein: the mounting position of the mounting block (5) on the central rotary joint (301) is also additionally provided with a blocking block.
7. The spherical drill head type cutter head structure of the shield tunneling machine according to claim 5, wherein: the flushing device is characterized in that flushing channels (6) which are communicated with each other are arranged in the rod body and the connecting block (306) on the central rotary joint (301), and the output end of each flushing channel (6) is located on the outer wall of the connecting block (306).
8. The spherical drill head type cutter head structure of the shield tunneling machine according to claim 7, wherein: the output end position of the flushing channel (6) corresponds to the position in the soil bin (7) of the shield body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122560024.0U CN216342153U (en) | 2021-10-22 | 2021-10-22 | Spherical drill head type cutter head structure of shield machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122560024.0U CN216342153U (en) | 2021-10-22 | 2021-10-22 | Spherical drill head type cutter head structure of shield machine |
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| CN216342153U true CN216342153U (en) | 2022-04-19 |
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| CN202122560024.0U Active CN216342153U (en) | 2021-10-22 | 2021-10-22 | Spherical drill head type cutter head structure of shield machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982609A (en) * | 2021-10-22 | 2022-01-28 | 无锡中铁城轨装备有限公司 | Spherical drill bit type cutter head structure of shield tunneling machine and excavation method |
-
2021
- 2021-10-22 CN CN202122560024.0U patent/CN216342153U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982609A (en) * | 2021-10-22 | 2022-01-28 | 无锡中铁城轨装备有限公司 | Spherical drill bit type cutter head structure of shield tunneling machine and excavation method |
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