CN116498337A - Cutter head of assembled shell-discarding and disassembly shield machine and assembling and disassembling method thereof - Google Patents
Cutter head of assembled shell-discarding and disassembly shield machine and assembling and disassembling method thereof Download PDFInfo
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- CN116498337A CN116498337A CN202310768804.5A CN202310768804A CN116498337A CN 116498337 A CN116498337 A CN 116498337A CN 202310768804 A CN202310768804 A CN 202310768804A CN 116498337 A CN116498337 A CN 116498337A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010276 construction Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims description 4
- 230000005641 tunneling Effects 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000013461 design Methods 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to an assembled shell-discarding and disassembling shield machine cutterhead and an assembling and disassembling method thereof, belonging to the technical field of shield construction. And when a certain part of the cutter head of the assembly type shield tunneling machine is damaged, the part can be replaced without replacing the whole cutter head, so that the service life is prolonged. Through reasonable arrangement of the fixed positions of the cutterhead and optimization of the mounting and dismounting sequences, the problems of narrow dismounting space, high dismounting difficulty and low dismounting efficiency in a hole are avoided, the construction period is shortened, the construction cost is reduced, the assembly rate of the cutterhead is realized to the maximum extent, and the cyclic utilization degree and the green construction level of the cutterhead are improved.
Description
Technical Field
The invention belongs to the technical field of shield construction, and particularly relates to an assembled shell-discarding and disassembling shield machine cutterhead and an assembling and disassembling method thereof.
Background
The shield method is an underground space construction method which utilizes a cutter disc and a cutter at the front end of a cutter head main machine of a shield machine to excavate a rock-soil body, assembles prefabricated segments under the protection of a shield shell, provides counter force for a pushing hydraulic cylinder and makes snakelike progress in stratum. With the vigorous development of track traffic engineering in China, the construction of a shield method is increasingly perfected, and the frequency of tunnel crossing Jiang Hehai lakes is increasingly high. Under the conditions of large span, short working period and complex geology, the shield in-ground butt joint technology of 'in-hole shell discarding and disassembling' becomes a new development trend.
In the prior art, in the process of shell discarding and disassembling of a cutter head of a shield machine, the cutter head needs to be cut off in a hole. But the space in the hole is relatively narrow, the dismantling difficulty is high, and the dismantling efficiency is very limited. Moreover, the cutterhead cannot be recycled after being cut off, and when the cutterhead of the shield machine is recovered by shell discarding and disassembly, the cutterhead needs to be remanufactured with a shield shell, so that great waste is caused.
Disclosure of Invention
The invention aims to provide a cutter head of an assembled shell-discarding and disassembling shield machine and an assembling and disassembling method thereof, which are used for solving the technical problems that the cutter head for cutting out in a hole has large disassembling difficulty and low efficiency and cannot be recycled after cutting out.
Therefore, in one aspect, the invention provides a cutter head of an assembled shell-discarding and-disassembling shield machine, comprising:
the center cutter head comprises first spokes and a spoke plate, wherein the first spokes are coaxially arranged and distributed in a radial manner by taking the center of the cutter head as the center, and the spoke plate is connected between the adjacent first spokes;
the outer ring spoke block is detachably connected to the end part of the first spoke;
the outer ring panel block is arranged between the adjacent outer ring spoke blocks and the spoke plates, and the outer ring panel block and the outer ring spoke blocks and the outer ring panel block and the spoke plates are detachably connected.
Preferably, the outer ring spoke block and the first spoke, the outer ring panel block and the outer ring spoke block and the outer ring panel block and the spoke are detachably connected through the support hydraulic cylinder and a telescopic hole matched with a piston rod of the support hydraulic cylinder.
Preferably, bolts are also used for fastening between the outer ring spoke block and the first spoke, between the outer ring panel block and the outer ring spoke block, and between the outer ring panel block and the spoke plate.
Preferably, the end part of the first spoke is provided with a first supporting hydraulic cylinder, and a first telescopic hole matched with a piston rod of the first supporting hydraulic cylinder is formed at the joint of the outer ring spoke block and the first spoke.
Preferably, a second supporting hydraulic cylinder is arranged on one side of the web far from the center of the cutter head, and a third telescopic hole matched with a piston rod of the second supporting hydraulic cylinder is arranged at the joint of the outer ring panel block and the web.
Preferably, a third supporting hydraulic cylinder is arranged at the joint of the outer ring panel block and the outer ring spoke block, and a second telescopic hole matched with a piston rod of the third supporting hydraulic cylinder is arranged on the outer ring spoke block.
Preferably, the outer ring spoke block comprises a second spoke and a connecting beam, the connecting beam is arranged on the side wall of the second spoke connected with the outer ring panel block away from the center of the cutter disc, and the second telescopic hole is formed in the connecting beam.
Preferably, the device further comprises an annular supporting beam and a bracket, wherein the annular supporting beam is coaxially arranged with the central cutterhead, the annular supporting beam is arranged on the back surface of the central cutterhead, and the bracket is connected between the central cutterhead and the annular supporting beam.
In addition, the invention also provides an assembling and disassembling method of the cutter head of the assembled shell-discarding and disassembling shield machine, which comprises the following steps:
s1, after a central cutter disc, all outer ring spoke blocks and outer ring panel blocks are transported to the site, the outer ring spoke blocks are detachably connected with the end parts of first spokes respectively;
s2, detachably connecting the outer ring panel blocks with the radial plates respectively;
s3, detachably connecting the outer ring panel block and the outer ring spoke block, so as to finish the installation of the whole cutterhead;
s4, after the shield machine is assembled, the shield construction is completed, the shield machine is disassembled, when the cutter head is disassembled, the outer ring spoke block and the outer ring panel block of one half part of the cutter head are disassembled firstly, then the center cutter head is disassembled, and finally the outer ring spoke block and the outer ring panel block of the other half part are disassembled.
Preferably, when the outer ring spoke block and the outer ring panel block are removed in S4, one outer ring spoke block is removed first, then the outer ring panel blocks on two sides of the outer ring spoke block are symmetrically removed, then adjacent outer ring spoke blocks are removed, and the steps are repeated until half of the outer ring spoke blocks and half of the outer ring panel blocks are removed.
Compared with the prior art, the invention has the characteristics and beneficial effects that:
(1) The invention realizes the welding-free installation and cutting-free dismantling of the cutterhead to the maximum extent through the modularized design, the assembly type construction, reasonable block arrangement and strong structural stability, and reduces the cutting workload and the recovery workload of the abandoned cutterhead. And when a certain part of the cutter head of the assembly type shield tunneling machine is damaged, the part can be replaced without replacing the whole cutter head, so that the service life is prolonged.
(2) According to the invention, through reasonable arrangement of the fixed positions of the cutterhead and optimization of the mounting and dismounting sequences, the problems of narrow dismounting space in a hole, high dismounting difficulty and low dismounting efficiency are avoided, the construction period is shortened, the construction cost is reduced, the assembly rate of the cutterhead is realized to the maximum extent, and the recycling degree and the green construction level of the cutterhead are improved.
(3) The outer ring spoke block and the first spoke, the outer ring panel block and the outer ring spoke block and the outer ring panel block and the spoke are detachably connected through the supporting hydraulic cylinder and the telescopic hole matched with the piston rod of the supporting hydraulic cylinder, and the connecting mode has the following advantages: (1) the shearing force of the connecting position can be increased by using the supporting hydraulic cylinder. (2) The hydraulic drive supports the piston rod of the hydraulic cylinder to stretch out and draw back, can realize the connection and dismantlement between two parts, easy operation, connect and dismantlement efficiency is especially high. (3) The hydraulic system controls the hydraulic pressure in the supporting hydraulic cylinder, so that the pressure of the piston rod to the telescopic hole can be changed, and the connection rigidity is adjusted, so that the cutterhead can be well adapted to different lithology and tunneling environments. (4) The hydraulic system has good buffering performance, can absorb the impact and vibration of the connecting part, so that the connecting mode can reduce the influence of the load on the connection as much as possible when encountering a larger load, the safety of the connection is improved, and the hydraulic system has greater advantages under high-speed rotation and geological change conditions.
Drawings
Fig. 1 is a schematic diagram of a front view structure of a cutter head of an assembled shell-discarding and disassembling shield machine;
FIG. 2 is a schematic diagram of a burst of a cutter head of the assembled shell-discarding and-disassembling shield machine;
fig. 3 is a schematic structural view of a center cutterhead;
FIG. 4 is a schematic view of the structure of the outer ring spoke block;
FIG. 5 is a schematic view of the structure of an outer race faceplate block;
fig. 6 is a schematic side view of a cutter head of the assembled shell-discarding and-disassembling shield machine.
The drawings are marked: 1-center cutterhead, 11-first spoke, 12-spoke plate, 13-first supporting hydraulic cylinder, 14-second supporting hydraulic cylinder, 2-outer ring spoke block, 21-second spoke, 22-connecting beam, 23-first expansion hole, 24-second expansion hole, 3-outer ring panel block, 31-third supporting hydraulic cylinder, 32-third expansion hole, 4-annular supporting beam, 5-bracket and 6-bolt.
Detailed Description
The present invention will be further described below in order to make the technical means, innovative features, achieved objects and effects achieved by the present invention easy to understand.
The examples described herein are specific embodiments of the present invention, which are intended to illustrate the inventive concept, are intended to be illustrative and exemplary, and should not be construed as limiting the invention to the embodiments and scope of the invention. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and specification of the present application, including those adopting any obvious substitutions and modifications to the embodiments described herein.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Aiming at the problems that the traditional cutter head of the welding type shield machine has large cutting difficulty and low cutting efficiency and cannot be recycled, the invention designs the cutter head of the assembled shell-discarding and-disassembling shield machine.
Example 1
As shown in fig. 1 and 2, the cutter head of the assembled shell-discarding and disassembling shield machine comprises a central cutter head 1, a plurality of outer ring spoke blocks 2 and a plurality of outer ring panel blocks 3, wherein the central cutter head 1 is detachably connected with the outer ring spoke blocks 2, the outer ring panel blocks 3 are detachably connected with the outer ring spoke blocks 2, and the outer ring panel blocks 3 are detachably connected with the central cutter head 1. In one embodiment, the outer ring spoke piece 2 includes outer ring spoke pieces 2 located in six directions of right above, left above, right above, left below, right below, and the outer ring panel piece 3 includes outer ring panel pieces 3 located in six directions of left above, right left below, right below, left below, and right below. Of course, the number of the outer ring spoke pieces 2 and the number of the outer ring panel pieces 3 in the present invention may be selected to be other numbers, specifically determined according to the number of the first spokes 11 of the center cutterhead 1.
As shown in fig. 3, the center cutterhead 1 includes first spokes 11 and webs 12, the first spokes 11 being coaxially arranged and radially distributed centering on the cutterhead center, the webs 12 being connected between adjacent first spokes 11. The first spokes 11 and the web 12 are welded together. The ends of the first spokes 11 extend beyond the outer edge of the web 12.
As shown in fig. 4, the outer ring spoke piece 2 is detachably connected to the end of the first spoke 11. The present invention preferably detachably connects the outer ring spoke piece 2 with the first spoke 11 through a supporting hydraulic cylinder and a telescopic hole matched with a piston rod of the supporting hydraulic cylinder. The outer ring spoke block 2 comprises a second spoke 21 and a connecting beam 22, the connecting beam 22 is arranged on the side wall of the second spoke 21 connected with the outer ring spoke block 3 far away from the center of the cutter disc, and a second telescopic hole 24 is arranged on the connecting beam 22. The second spoke 21 and the connecting beam 22 may be welded to each other. The outer sides of the second spokes 21 and the outer sides of the connecting beams 22 are arc-shaped.
As shown in fig. 5, the outer ring panel block 3 is disposed between the adjacent outer ring spoke block 2 and the spoke plate 12, and the outer ring panel block 3 and the outer ring spoke block 2 and the outer ring panel block 3 and the spoke plate 12 are detachably connected. The whole outer ring panel block 3 is of an approximate sector structure, the outer side of the outer ring panel block 3 is arc-shaped, and after the outer ring panel block 3, the outer ring spoke block 2 and the central cutter head 1 are connected, the outer side of the outer ring panel block 3 and the outer side of the outer ring spoke block 2 are positioned on the same arc surface. The joints of the outer ring panel blocks 3 and the webs 12 and the joints of the outer ring panel blocks and the connecting beams 22 are horizontal planes, so that the connection is convenient and tight. A gap is left between the outer ring panel block 3 and the first spoke 11.
The invention preferably detachably connects the outer ring panel block 3 with the outer ring spoke block 2 and the outer ring panel block 3 with the spoke plate 12 through the supporting hydraulic cylinder and the telescopic hole matched with the piston rod of the supporting hydraulic cylinder. It should be noted that, those skilled in the art may also use other removable manners to connect the outer ring spoke piece 2 with the first spoke 11, connect the outer ring panel piece 3 with the outer ring spoke piece 2, and connect the outer ring panel piece 3 with the spoke 12, for example, by a snap-in connection, a key-slot connection, a sliding connection, or the like.
In order to improve the reliability of connection between the components, bolts 6 are used for fastening between the outer ring spoke block 2 and the first spoke 11, between the outer ring panel block 3 and the outer ring spoke block 2 and between the outer ring panel block 3 and the spoke 12. Specifically, the connection between the first spoke 11 and the second spoke 21 is provided with a flange, and the bolts 6 penetrate through the flange of the first spoke 11 and the flange of the second spoke 21 to fasten the first spoke 11 and the second spoke 21. Similarly, a flange is provided at the junction of the outer ring panel block 3 and the web 12, and the bolts 6 pass through the flange of the outer ring panel block 3 and the flange of the web 12 to fasten the outer ring panel block 3 and the web 12. Similarly, a flange is arranged at the joint of the connecting beam 22 and the outer ring panel block 3, and the bolts 6 penetrate through the flange of the outer ring panel block 3 and the flange of the connecting beam 22 to fasten the connecting beam 22 and the outer ring panel block 3.
In one embodiment, the end of the first spoke 11 is provided with a first supporting hydraulic cylinder 13, the connection of the outer ring spoke piece 2 and the first spoke 11 is provided with a first telescopic hole 23 matched with a piston rod of the first supporting hydraulic cylinder 13, and specifically, the first telescopic hole 23 is arranged at one end of the second spoke 21 close to the first spoke 11. The hydraulic system of the first supporting hydraulic cylinder 13 controls the extension and retraction of the piston rod, so that the end of the piston rod extends into and out of the first extension hole 23, thereby realizing the connection and the disassembly of the first spoke 11 and the outer ring spoke piece 2. The side of the web 12 far from the center of the cutterhead is provided with a second supporting hydraulic cylinder 14, and the joint of the outer ring panel block 3 and the web 12 is provided with a third telescopic hole 32 matched with a piston rod of the second supporting hydraulic cylinder 14. The hydraulic system of the second supporting hydraulic cylinder 14 controls the extension and retraction of the piston rod so that the end of the piston rod extends into and out of the third extension hole 32, thereby realizing the connection and disconnection of the outer ring panel block 3 and the web 12. The connection part of the outer ring panel block 3 and the outer ring spoke block 2 is provided with a third supporting hydraulic cylinder 31, the outer ring spoke block 2 is provided with a second telescopic hole 24 matched with a piston rod of the third supporting hydraulic cylinder 31, and the second telescopic hole 24 is arranged on the connecting beam 22. The hydraulic system of the third supporting hydraulic cylinder 31 controls the extension and retraction of the piston rod, so that the end of the piston rod extends into and out of the second extension hole 24, thereby realizing the connection and the disassembly of the outer ring panel block 3 and the outer ring spoke block 2. The first supporting hydraulic cylinders 13 are arranged at the end parts of the first spokes 11, and the first telescopic holes 23 are arranged on the outer ring spoke blocks 2, because the supporting hydraulic cylinders need to be powered through the rotary joint pipe line of the center cutterhead 1, and the outer ring of the center cutterhead 1 cannot provide a power channel.
As shown in fig. 6, the assembled shell-discarding and-disassembling shield machine cutterhead of the invention further comprises an annular supporting beam 4 and a bracket 5, wherein the annular supporting beam 4 is coaxially arranged with the central cutterhead 1, the annular supporting beam 4 is arranged on the back surface of the central cutterhead 1, and the bracket 5 is connected between the central cutterhead 1 and the annular supporting beam 4. The annular supporting beam 4 is used for connecting the cutterhead and a main bearing for driving the cutterhead to rotate. The bracket 5 and the center cutterhead 1 and the bracket 5 and the annular supporting beam 4 can be connected by welding.
The mounting and dismounting method of the cutter head of the assembled shell-discarding and disassembling shield machine comprises the following steps:
s1, according to a construction design drawing of the cutter head of the assembled shell-discarding and disassembly shield machine, after the center cutter head 1, all the outer ring spoke blocks 2 and the outer ring panel blocks 3 are transported to the site, the outer ring spoke blocks 2 are respectively detachably connected with the end parts of the first spokes 11.
S2, detachably connecting the outer ring panel blocks 3 with the radial plates 12 respectively.
S3, detachably connecting the outer ring panel block 3 with the outer ring spoke block 2, and thus completing the installation of the whole cutter head.
S4, after the shield machine is assembled, the shield construction is completed, the shield machine is disassembled, when the cutterhead is disassembled, the outer ring spoke block 2 and the outer ring panel block 3 of one half of the cutterhead are disassembled firstly, then the central cutterhead 1 is disassembled, and finally the outer ring spoke block 2 and the outer ring panel block 3 of the other half of the cutterhead are disassembled. Preferably, when the outer ring spoke piece 2 and the outer ring panel piece 3 are removed, one outer ring spoke piece 2 is removed, then the outer ring panel pieces 3 on two sides of the outer ring spoke piece 2 are symmetrically removed, then adjacent outer ring spoke pieces 2 are removed, and the steps are repeated until half of the outer ring spoke pieces 2 and the outer ring panel pieces 3 are removed.
Example two
In the invention, when the outer ring spoke block 2 and the first spoke 11, the outer ring panel block 3 and the outer ring spoke block 2 and the outer ring panel block 3 and the spoke 12 are preferably detachably connected through the supporting hydraulic cylinder and the telescopic hole matched with the piston rod of the supporting hydraulic cylinder, the mounting and dismounting method of the cutter head of the assembled shell discarding and disassembling shield tunneling machine comprises the following steps:
s1, according to a construction design drawing of the cutter head of the assembled shell-discarding and disassembly shield machine, after the center cutter head 1, all outer ring spoke blocks 2 and outer ring panel blocks 3 are transported to the site, the outer ring spoke blocks 2 are assembled on the outer ring of the center cutter head 1, a hydraulic system control piston rod of a first supporting hydraulic cylinder 13 stretches into a first telescopic hole 23, and a second spoke 21 of the outer ring spoke blocks 2 is connected with a first spoke 11 of the center cutter head 1 by bolts 6.
S2, assembling the outer ring panel block 3 on the outer ring of the center cutter head 1, controlling a piston rod to extend into the third telescopic hole 32 by a hydraulic system of the second supporting hydraulic cylinder 14, and connecting the outer ring panel block 3 with the web 12 by using the bolts 6.
And S3, a hydraulic cylinder control piston rod of the third supporting hydraulic cylinder 31 extends into the second telescopic hole 24, and the outer ring panel block 3 is connected with the connecting beam 22 by using the bolts 6. Thus, the whole cutterhead is mounted.
After the shield engineering has the condition of descending the well, descending the well according to the sequence of the front shield, the middle shield, the tail shield and the cutter head; selecting a shield shell discarding and disassembling position according to stratum conditions or engineering requirements, and reinforcing stratum at the shell discarding and disassembling position; after the cutter head of the shield machine reaches the shell discarding and disassembling position, sequentially removing all the trolleys according to the sequence from back to front, and conveying the trolleys to a shield starting working well and hoisting the trolleys out; removing all components in the tail shield and the middle shield; fixing a cutter disc with a front shield shell; and removing the front shield inner shield body and the main driving unit.
S4, removing bolts 6 between the first spokes 11 and the second spokes 21 of the outer ring spoke block 2 right above;
removing bolts 6 between the outer ring spoke blocks 2 and the adjacent outer ring panel blocks 3;
the outer ring spoke block 2 right above is stabilized, the hydraulic system of the first supporting hydraulic cylinder 13 controls the piston rod to shrink, and the hydraulic system of the third supporting hydraulic cylinder 31 controls the piston rod to shrink; tilting the outer ring spoke block 2 right above by an angle, moving the outer ring spoke block along the direction close to the axis, pulling the outer ring spoke block out backwards along the axis, conveying the outer ring spoke block to a shield starting well, and lifting the shield starting well out of the ground;
stabilizing the upper right outer ring panel block 3, and removing bolts 6 between the upper right outer ring panel block 3 and adjacent connecting beams 22 and webs 12;
the hydraulic system of the second supporting hydraulic cylinder 14 controls the piston rod to shrink, and the hydraulic system of the third supporting hydraulic cylinder 31 controls the piston rod to shrink, and the outer ring panel block 3 at the upper right is pulled out backwards along the axis direction and then conveyed to a shield launching well to be lifted out of the ground;
and S4, repeating until all the outer ring spoke blocks 2 and the outer ring panel blocks 3 of the upper half part of the cutterhead are removed and lifted out of the ground. When the outer ring spoke block 2 and the outer ring panel block 3 are removed, a symmetrical removal principle is adopted, so that the gravity center of the rest cutterhead after the outer ring spoke block 2 and the outer ring panel block 3 are removed is ensured to be relatively stable.
S5, removing bolts 6 between the first spoke 11 and the outer ring spoke block 2 of the lower half, the spoke 12 and the outer ring panel block 3 of the lower half and the outer ring spoke block 2 of the lower half and the outer ring panel block 3;
the hydraulic system of the first supporting hydraulic cylinder 13 controls the piston rod to shrink, and the hydraulic system of the second supporting hydraulic cylinder 14 controls the piston rod to shrink, and the central cutterhead 1 is pulled out backwards along the axial direction and conveyed to a shield starting well to be lifted out of the ground;
and S4, repeating the step, and removing and hanging all the outer ring spoke strip blocks 2 and the outer ring panel blocks 3 on the lower half part of the cutterhead out of the ground.
And cutting off a front shield shell baffle, a middle shield shell baffle and a tail shield shell baffle to finish shell discarding and disassembling of the shield machine.
It should be noted that, the present invention may also be used to remove all outer ring spoke blocks 2 and outer ring panel blocks 3 of the lower half first, then remove the center cutterhead 1, and finally remove all outer ring spoke blocks 2 and outer ring panel blocks 3 of the upper half. The invention can also remove all outer ring spoke blocks 2 and outer ring panel blocks 3 of the left half part firstly, then remove the center cutter head 1, and finally remove all outer ring spoke blocks 2 and outer ring panel blocks 3 of the right half part. Or the outer ring spoke block 2 and the outer ring panel block 3 of the right half part can be removed firstly, then the center cutter head 1 is removed, and finally the outer ring spoke block 2 and the outer ring panel block 3 of the left half part are removed. Even the half part of all the outer ring spoke blocks 2 and the outer ring panel blocks 3 at any angle can be removed firstly, then the center cutter head 1 is removed, and finally all the outer ring spoke blocks 2 and the outer ring panel blocks 3 at the rest half part are removed.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (10)
1. The utility model provides a shell disintegration shield constructs machine knife dish is abandoned to assembled which characterized in that includes:
the center cutter head (1) comprises first spokes (11) and webs (12), wherein the first spokes (11) are coaxially arranged and distributed in a radial manner by taking the center of the cutter head as the center, and the webs (12) are connected between the adjacent first spokes (11);
the outer ring spoke block (2) is detachably connected to the end part of the first spoke (11);
the outer ring panel block (3) is arranged between the adjacent outer ring spoke blocks (2) and the spoke plates (12), and the outer ring panel block (3) and the outer ring spoke blocks (2) and the outer ring panel block (3) and the spoke plates (12) are detachably connected.
2. The cutter head of the assembled shell-discarding and disassembling shield machine according to claim 1, wherein the outer ring spoke block (2) and the first spoke (11), the outer ring panel block (3) and the outer ring spoke block (2) and the outer ring panel block (3) and the spoke plate (12) are detachably connected through a supporting hydraulic cylinder and a telescopic hole matched with a piston rod of the supporting hydraulic cylinder.
3. The cutter head of the assembled shell-discarding and disassembled shield machine according to claim 2, wherein bolts (6) are further used for fastening between the outer ring spoke block (2) and the first spoke (11), between the outer ring spoke block (3) and the outer ring spoke block (2) and between the outer ring spoke block (3) and the spoke plate (12).
4. The cutter head of the assembled shell-discarding and disassembling shield machine according to claim 1, wherein a first supporting hydraulic cylinder (13) is arranged at the end part of the first spoke (11), and a first telescopic hole (23) matched with a piston rod of the first supporting hydraulic cylinder (13) is arranged at the joint of the outer ring spoke block (2) and the first spoke (11).
5. The cutter head of the assembled shell-discarding and disassembling shield machine according to claim 1, wherein a second supporting hydraulic cylinder (14) is arranged on one side of the web (12) far from the center of the cutter head, and a third telescopic hole (32) matched with a piston rod of the second supporting hydraulic cylinder (14) is arranged at the joint of the outer ring panel block (3) and the web (12).
6. The cutter head of the assembled shell-discarding and disassembling shield machine according to claim 1, wherein a third supporting hydraulic cylinder (31) is arranged at the joint of the outer ring panel block (3) and the outer ring spoke block (2), and a second telescopic hole (24) matched with a piston rod of the third supporting hydraulic cylinder (31) is arranged on the outer ring spoke block (2).
7. The cutter head of the assembled shell-discarding and disassembled shield machine according to claim 6, wherein the outer ring spoke block (2) comprises a second spoke (21) and a connecting beam (22), the connecting beam (22) is arranged on the side wall of the second spoke (21) connected with the outer ring spoke block (3) far away from the center of the cutter head, and the second telescopic hole (24) is arranged on the connecting beam (22).
8. The assembled shell-discarding disassembled shield machine cutterhead according to claim 1, further comprising an annular supporting beam (4) and a bracket (5), wherein the annular supporting beam (4) is coaxially arranged with the central cutterhead (1) and the annular supporting beam (4) is arranged on the back surface of the central cutterhead (1), and the bracket (5) is connected between the central cutterhead (1) and the annular supporting beam (4).
9. A method of installing and removing a cutterhead of an assembled shell-discarding and-disassembling shield machine according to any one of claims 1 to 8, comprising the steps of:
s1, after a central cutter head (1), all outer ring spoke blocks (2) and outer ring panel blocks (3) are transported to the site, the outer ring spoke blocks (2) are detachably connected with the end parts of first spokes (11) respectively;
s2, detachably connecting the outer ring panel blocks (3) with the radial plates (12) respectively;
s3, detachably connecting the outer ring panel block (3) with the outer ring spoke block (2), so as to finish the installation of the whole cutter head;
s4, finishing shield construction after assembling the shield machine, removing the shield machine, and when removing the cutterhead, firstly removing the outer ring spoke block (2) and the outer ring panel block (3) of one half of the cutterhead, then removing the center cutterhead (1), and finally removing the outer ring spoke block (2) and the outer ring panel block (3) of the other half of the cutterhead.
10. The method for assembling and disassembling the cutterhead of the shield machine according to claim 9, wherein when the outer ring spoke piece (2) and the outer ring faceplate piece (3) are disassembled in the step S4, one outer ring spoke piece (2) is disassembled first, then the outer ring faceplate pieces (3) on two sides of the outer ring spoke piece (2) are disassembled symmetrically, then the adjacent outer ring spoke pieces (2) are disassembled, and the steps are repeated until half of the outer ring spoke pieces (2) and the outer ring faceplate pieces (3) are disassembled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310768804.5A CN116498337A (en) | 2023-06-28 | 2023-06-28 | Cutter head of assembled shell-discarding and disassembly shield machine and assembling and disassembling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310768804.5A CN116498337A (en) | 2023-06-28 | 2023-06-28 | Cutter head of assembled shell-discarding and disassembly shield machine and assembling and disassembling method thereof |
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| CN116498337A true CN116498337A (en) | 2023-07-28 |
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