CN110513117B - Mode switching device of double-mode shield screw machine and using method - Google Patents
Mode switching device of double-mode shield screw machine and using method Download PDFInfo
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- CN110513117B CN110513117B CN201910913491.1A CN201910913491A CN110513117B CN 110513117 B CN110513117 B CN 110513117B CN 201910913491 A CN201910913491 A CN 201910913491A CN 110513117 B CN110513117 B CN 110513117B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 239000002689 soil Substances 0.000 claims description 14
- 238000010276 construction Methods 0.000 abstract description 14
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 5
- 230000005641 tunneling Effects 0.000 abstract description 4
- 239000002893 slag Substances 0.000 description 25
- 238000007790 scraping Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
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- 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/124—Helical conveying means therefor
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Abstract
The invention discloses a mode switching device of a double-mode shield screw machine and a using method thereof, wherein the mode switching device comprises a connecting rotating mechanism and a lifting mechanism, the connecting rotating mechanism is arranged at the front part of a screw conveyer, and the screw conveyer is detachably connected with a main drive or a front shield screw machine base through the connecting rotating mechanism; hoisting mechanism symmetry sets up in screw conveyer's both sides, and hoisting mechanism's the outside and the girder fixed connection of erector, hoisting mechanism's inboard and screw conveyer sliding connection. The invention can meet the tunneling construction requirements of an open mode and an earth pressure mode, can assist in finishing quick and efficient mode conversion, has simple and quick installation mode, realizes a high-efficiency operation mode of a main machine and a rear matching, improves the construction efficiency of the shield machine, and enhances the adaptability of the shield machine.
Description
Technical Field
The invention belongs to the technical field of shield machine construction, and particularly relates to a double-mode shield spiral machine mode switching device and a using method thereof.
Background
At present, a 6 m-level central screw type earth pressure/open double-mode shield (an earth pressure mode of slag discharged by a bottom screw machine and an open mode of slag discharged by a central screw machine) is applied to urban subway tunnels with complex and changeable geological environments by virtue of the advantages of safety in construction, high-efficiency slag discharge, strong adaptability and the like, and how to quickly and efficiently complete mode conversion is a key factor for smooth construction of the 6 m-level double-mode shield. However, the method for efficient mode conversion has not been studied domestically or abroad.
Subject machine space restriction, two kinds of modes of 6m level center screw machine formula bimodulus shield are tunneled and are slagging tap required center screw machine and bottom screw machine can not coexist, need during the mode conversion dismouting respectively and the relevant key component of dregs transportation, and its flow operation is complicated, and is consuming time longer, has many defects: firstly, in order to ensure that key components such as a screw machine and the like are smoothly disassembled and assembled during mode conversion, the main machine and the rear matching system are disconnected, meanwhile, the rear matching system is integrally pulled and retreated by about 20m, and enough operation space is reserved between the main machine and the rear matching system. This construction operation consumes a lot of manpower and material resources, for example: dismounting pipelines, dismounting equipment bridge tools, debugging related equipment such as fluid, hydraulic pressure and electricity again; secondly, when key components such as a screw machine and the like are hoisted and installed, a large number of tools need to be additionally welded, and meanwhile, a plurality of construction workers with abundant experience are matched for assisting and completing, so that the required tools in the construction operation are troublesome to transport, difficult to weld in a hole and inconvenient to operate, and the construction efficiency is seriously influenced. Aiming at the defects existing in the current central screw machine dual-mode shield mode conversion construction method, a novel rapid mode conversion construction method is urgently needed to be designed.
The bottom screw machine bottom of the shield machine is fixed on the shield body screw machine seat through the bolt, the middle part utilizes one end of the pull rod to be connected on the screw machine ear plate, the other end is connected on the main drive ear plate, and the shield machine is affected by the weight, the size and the narrow space of the main machine of the screw machine, so that the installation mode is very inconvenient for replacing the screw machine in the workshop assembly or the hole. Meanwhile, for a central screw machine dual-mode shield, the installation mode can only be suitable for a soil pressure mode, when the open mode is used for tunneling, the screw machine is located in the middle of the main machine and limited by space, and the screw machine cannot be fixed by the pull rod mode, so that the screw machine installation mode which can meet the tunneling requirements of two modes and can be switched between the high-efficiency modes is urgently needed to be designed.
Disclosure of Invention
The invention provides a double-mode shield screw machine mode switching device and a using method thereof, aiming at the problems that the switching between an earth pressure balance mode of slag discharge of a bottom screw machine and an open mode of slag discharge of a central screw machine is complicated and inconvenient to operate, and the quick switching between the open mode and the earth pressure mode is realized.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a mode switching device of a double-mode shield screw machine comprises a connecting rotating mechanism and a lifting mechanism, wherein the connecting rotating mechanism is arranged at the front part of a screw conveyor, and the screw conveyor is detachably connected with a main drive or a front shield screw machine base through the connecting rotating mechanism; the hoisting mechanisms are symmetrically arranged on two sides of the spiral conveyor, are positioned at the rear part of the splicing machine, are fixedly connected with a main beam of the splicing machine at the outer side and are connected with the spiral conveyor in a sliding manner at the inner side.
The connecting and rotating mechanism comprises a joint bearing assembly, the inner surface of the joint bearing assembly is fixedly connected with the screw conveyer, and the outer surface of the joint bearing assembly is detachably connected with the main drive or the front shield screw base.
Still be equipped with the connecting plate between joint bearing assembly and the main drive, one side and the main drive fixed connection of connecting plate, the opposite side and the joint bearing assembly of connecting plate can dismantle and be connected.
The lifting mechanism comprises a pusher, a slide block assembly and a lifting mechanism slide way, the slide block assembly is arranged in the lifting mechanism slide way, one side of the slide block assembly is horizontally and slidably connected with the screw conveyer through a screw machine track, and the other side of the slide block assembly is vertically and slidably connected with the lifting mechanism slide way; the lifting mechanism slide ways are symmetrically and fixedly arranged on a main beam of the assembling machine; the pusher is movably arranged in the lifting mechanism slide way, the pusher is positioned at the lower part of the slide block assembly, the movable end of the pusher is fixedly connected with the slide block assembly, and the fixed end of the pusher is fixedly connected with the bottom of the lifting mechanism slide way.
The sliding block assembly comprises a sliding block and a connecting part, one side of the sliding block is connected with the lifting mechanism slide way in a sliding mode, and the other side of the sliding block is fixedly connected with one side of the connecting part; the other side of the connecting part is movably arranged in the screw machine track.
The screw conveyor track comprises a sliding plate, side plates and a cover plate, the cover plate and the sliding plate are horizontally and symmetrically arranged on the screw conveyor, and the sliding plate is fixedly connected with the screw conveyor; the upper part of the side plate is vertically and fixedly connected with the sliding plate, and the lower part of the side plate is detachably connected with the cover plate; one side of the side plate is fixedly connected with the spiral conveyor, and the other side of the side plate, the sliding plate and the cover plate form a groove; the connecting portion activity sets up in the recess, and the length of recess is greater than the length of connecting portion, pulling screw conveyer, and the relative displacement appears promptly between screw conveyer and the connecting portion along connecting portion removal, screw conveyer and the screw conveyer track.
A use method of a double-mode shield screw machine switching device comprises the following steps when in an open mode soil pressure changing mode:
s1, removing the connection between the knuckle bearing assembly and the connecting plate, adjusting the oil pressure of the pusher to enable the pusher to descend, enabling the sliding block assembly and the pusher to descend synchronously, and enabling the rear part of the screw conveyor to rotate downwards synchronously along with the descending of the sliding block assembly until the screw conveyor rotates to a horizontal position;
s2, pulling out the screw conveyor from the main drive and moving the screw conveyor backwards to enable the tail of the screw conveyor to avoid the main drive;
s3, adjusting the oil pressure of the pusher to lift the pusher, enabling the sliding block assembly and the pusher to lift synchronously, and enabling the screw conveyor to rotate upwards synchronously along with the lifting of the sliding block assembly until the front part of the screw conveyor is opposite to the front shield screw base;
s4, enabling the screw conveyor to move downwards in an inclined mode, and connecting the knuckle bearing assembly with the front shield screw base;
when the soil pressure mode is changed to the open mode, the method comprises the following steps:
s1, removing the connection between the knuckle bearing assembly and the front shield screw base, and pulling out the screw conveyor from the front shield screw base;
s2, adjusting the oil pressure of the pusher to enable the pusher to descend, enabling the sliding block assembly and the pusher to descend synchronously, and enabling the screw conveyor to rotate downwards synchronously with the descending of the sliding block assembly until the screw conveyor rotates to a horizontal position;
s3, enabling the spiral conveyer to move forwards horizontally and inserting the spiral conveyer into the main drive;
and S4, adjusting the oil pressure of the pusher to lift the pusher, enabling the sliding block assembly and the pusher to lift synchronously, enabling the rear part of the screw conveyor to rotate upwards synchronously along with the lifting of the sliding block assembly until the included angle between the screw conveyor and the horizontal position is 4 degrees, and then connecting the joint bearing assembly and the connecting plate.
The invention has the beneficial effects that:
the invention can not only meet the tunneling construction requirements of an open mode and a soil pressure mode, but also assist in completing the fast and efficient mode conversion; when the shield machine digs with a small curve horizontally or vertically, the front shield and the tail shield can move relatively, the screw conveyer can be movably connected with the main drive or the front shield screw machine base through the joint bearing assembly in two modes, and the screw conveyer can be buffered in the digging process; the arrangement of the screw machine track when the open mode and the soil pressure mode are mutually converted not only plays a role of supporting the screw conveyer, but also can ensure that the screw conveyer can adapt to the small curve horizontal turning or up-and-down slope turning requirements of the shield machine.
In a word, the installation mode of the invention is simple, convenient and quick, and the requirement of high-efficiency and quick conversion of two modes can be completed in an auxiliary way without adding new fixed supports such as a pull rod and the like in the soil pressure balance mode of the slag discharged by the bottom screw machine and the open mode of the slag discharged by the central screw machine; the construction method is mainly characterized in that on the premise that the main machine and the rear matching are not disconnected, the screw conveyor can quickly complete the dismounting operation of converting from the bottom of the shield body to the main driving central area or from the main driving central area to the bottom of the shield body, the parallel high-efficiency operation of the main machine and the rear matching is realized, the construction efficiency of the shield machine is improved, and the adaptability of the shield machine is enhanced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the present invention in open mode connected to a main machine and equipment bridge tapping with a central screw.
Fig. 2 is a schematic structural view of the screw conveyor when pulled out.
Fig. 3 is a schematic view of the structure of the screw conveyor when it rotates.
FIG. 4 is a schematic structural diagram of the present invention connected to a main machine and an equipment bridge for tapping with a central screw machine in an earth pressure mode.
Fig. 5 is a sectional view a-a of fig. 1.
Fig. 6 is a sectional view B-B of fig. 4.
Fig. 7 is a partial enlarged view of E in fig. 1.
Fig. 8 is a partial enlarged view of F in fig. 5.
In the figure, 1 is a cutter head slag scraping plate, 2 is a front shield, 3 is a main drive, 4 is a screw conveyor, 5 is an assembling machine, 6 is an equipment bridge, 7 is a belt conveyor tail assembly, 8 is a hoisting mechanism, 8-1 is a pusher, 8-2 is a top sliding block assembly, 8-3 is a hoisting mechanism sliding way, 8-2-1 is a sliding block, 8-2-2 is a connecting part, 8-2-3 is a fixing plate, 8-2-4 is a circular ring, 9 is a central rotary joint, 10 is a slag chute, 11 is a joint bearing assembly, 12 is a screw machine rail, 13 is a connecting plate, 12-1 is a sliding plate, 12-2 is a side plate, and 12-3 is a cover plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
A mode switching device of a double-mode shield screw machine is shown in figure 1 and comprises a connecting rotating mechanism and a lifting mechanism 8, wherein the connecting rotating mechanism is arranged at the front part of a screw conveyor 4, and the screw conveyor 4 is detachably connected with a main drive 3 or a front shield screw machine base through the connecting rotating mechanism; as shown in fig. 5, the hoisting mechanisms 8 are symmetrically arranged on two sides of the screw conveyor 4 to play a role of fixed support for the screw conveyor 4 during mode switching, the screw conveyor 4 is located between two main beams of the erector 5, the outer parts of the two hoisting mechanisms 8 are respectively fixedly connected with the rear side walls of the two main beams of the erector 5, and the inner parts of the hoisting mechanisms 8 are slidably connected with the screw conveyor 4 so as to rotate or horizontally move the screw conveyor 4 during mode switching.
As shown in fig. 7, the connecting and rotating mechanism comprises a joint bearing assembly 11, wherein the inner surface of the joint bearing assembly 11 is fixedly connected with the spiral conveyer 4, so that the spiral conveyer 4 can rotate in the main drive 3; the outer surface of the joint bearing assembly 11 is detachably connected with the main drive 3 or the front shield screw base through bolts, so that the screw conveyor 4 is convenient to detach during mode switching; still be equipped with connecting plate 13 between joint bearing assembly 11 and the main drive 3, one side of connecting plate 13 and the inner wall fixed connection of main drive 3, the opposite side of connecting plate 13 passes through the bolt and can dismantle with joint bearing assembly 11's surface and be connected, and the effect of strengthening the connection can be played in the setting of connecting plate 13.
As shown in fig. 6, the hoisting mechanism 8 comprises a pusher 8-1, a slider assembly 8-2 and hoisting mechanism slideways 8-3, the hoisting mechanism slideways 8-3 are symmetrically and fixedly arranged on two main beams of the erector 5, and the front parts of the two hoisting mechanism slideways 8-3 are correspondingly and fixedly connected with the rear side walls of the two main beams so as to fix the hoisting mechanism slideways 8-3 and further form a support for the spiral conveyor 4; the sliding block assembly 8-2 is arranged in the lifting mechanism slide way 8-3, the sliding block assembly 8-2 comprises a sliding block 8-2-1 and a connecting part 8-2-2, the sliding block 8-2-1 is arranged in the lifting mechanism slide way 8-3, one side of the sliding block 8-2-1 is vertically and slidably connected with the lifting mechanism slide way 8-3 through a guide rail, the guide rail is vertically and fixedly arranged in the lifting mechanism slide way 8-3, and the sliding block 8-2-1 is movably arranged on the guide rail so that the sliding block 8-2-1 can slide up and down along the guide rail in the lifting mechanism slide way 8-3; the other side of the sliding block 8-2-1 is fixedly connected with one side of the connecting part 8-2-2; the other side of the connecting part 8-2-2 is movably arranged in the screw machine track 12; the pusher 8-1 is movably arranged in the lifting mechanism slide way 8-3, the pusher 8-1 is positioned at the lower part of the slide block 8-2-1, the movable end of the pusher 8-1 is fixedly connected with the lower part of the slide block 8-2-1, the fixed end of the pusher 8-1 is fixedly connected with the bottom of the lifting mechanism slide way 8-3, and the slide block can be pushed to move up and down along the lifting mechanism slide way 8-3 by opening the pusher 8-1.
As shown in fig. 8, the screw machine track 12 comprises a sliding plate 12-1, a side plate 12-2 and a cover plate 12-3, wherein the cover plate 12-3 and the sliding plate 12-1 are horizontally and symmetrically arranged on the screw conveyor 4, and the sliding plate 12-1 is fixedly connected with the screw conveyor 4; the upper part of the side plate 12-2 is vertically and fixedly connected with the sliding plate 12-1, the lower part of the side plate 12-2 is detachably connected with the cover plate 12-3 through a bolt, and the screw conveyor 4 is detached after the cover plate 12-3 is detached; one side of the side plate 12-2 is fixedly connected with the spiral conveyor 4, and the other side of the side plate 12-2, the sliding plate 12-1 and the cover plate 12-3 form a groove; the connecting portion 8-2-2 is movably arranged in the groove, and the length of the groove is larger than that of the connecting portion 8-2-2, so that when the spiral conveyor 4 is pulled or pushed, the screw machine track 12 moves back and forth along the connecting portion 8-2-2, and relative displacement occurs between the screw machine track 12 and the spiral conveyor 4 and between the connecting portion 8-2-2.
In order to reduce friction during sliding, the outer side of the connecting part 8-2-2 is fixedly provided with a circular ring 8-2-4 so as to facilitate relative movement between the screw machine track 12 and the connecting part 8-2-2; in order to fix the ring 8-2-4 better, a fixing plate 8-2-3 is arranged between the connecting part 8-2-2 and the side plate 12-2, and the fixing plate 8-2-3 is fixedly connected with the ring 8-2-4 and the connecting part 8-2-2.
In order to improve the pressure resistance of the sliding plate 12-1, a wear-resistant plate is fixedly arranged between the sliding plate 12-1 and the circular ring 8-2-4, and the wear-resistant plate is a high-strength pressure-resistant steel plate; a small gap is arranged between the cover plate 12-3 and the circular ring 8-2-4 to reduce the pressure of the cover plate 12-3.
In this embodiment, the pusher 8-1 is a multi-stage cylinder.
A use method of a double-mode shield screw machine switching device comprises the following steps when in an open mode soil pressure changing mode:
s1, detaching the cutter head slag scraping plate 1 from the cutter head, and detaching the connection between the main drive 3 and the slag chute 10 and the connection between the equipment bridge 6 of the rear supporting system and the tail assembly 7 of the belt conveyor;
s2, removing the connection between the knuckle bearing assembly 11 and the connecting plate 13, adjusting the oil pressure of the multi-stage oil cylinder to enable the multi-stage oil cylinder to descend, and synchronously descending the sliding block assembly 8-2 and the multi-stage oil cylinder because a pushing handle of the multi-stage oil cylinder is fixedly connected with the sliding block assembly 8-2, and synchronously rotating the rear part of the screw conveyor 4 downwards along with the descending of the sliding block assembly 8-2 until the screw conveyor 4 rotates to the horizontal position from 4 degrees;
s3, as shown in fig. 2, pulling the screw conveyor 4 out of the main drive 3 by using the chain block, and making the screw conveyor 4 continuously move backward for about three meters, so that the tail of the screw conveyor 4 avoids the motor of the main drive 3;
s4, as shown in figure 3, adjusting the oil pressure of the multi-stage oil cylinder to lift the multi-stage oil cylinder, enabling the slide block assembly 8-2 and the multi-stage oil cylinder to lift synchronously, enabling the spiral conveyor 4 to rotate upwards synchronously with the lifting of the slide block assembly 8-2, and simultaneously pulling the spiral conveyor 4 upwards synchronously by means of a chain block until the front part of the spiral conveyor 4 corresponds to the front shield screw base;
s5, as shown in FIG. 4, the spiral conveyor 4 is moved downwards obliquely by means of a chain block, and then the knuckle bearing assembly 11 and the front shield screw base are connected;
s6, mounting the central rotary joint 9 on a connecting plate of the main drive 3, communicating related pipelines such as fluid hydraulic pressure and the like at two ends of the central rotary joint 9, and finally connecting the tail assembly 7 of the belt conveyor to the equipment bridge 6;
and S7, completing mode conversion after debugging each system.
When the soil pressure mode is changed to the open mode, the method comprises the following steps:
s1, removing the connection between the central rotary joint 9 and the main drive 3 and the related pipelines such as fluid hydraulic pressure and the like, and then removing the tail assembly 7 of the belt conveyor from the equipment bridge 6;
s2, removing the connection between the knuckle bearing assembly 11 and the front shield screw base, and pulling the screw conveyor 4 out of the front shield screw base by using a chain block;
s3, adjusting the oil pressure of the multi-stage oil cylinder to enable the multi-stage oil cylinder to descend, enabling the sliding block assembly 8-2 to descend synchronously with the multi-stage oil cylinder, enabling the spiral conveyor 4 to rotate downwards synchronously with the descending of the sliding block assembly 8-2, and enabling the spiral conveyor 4 to rotate downwards by using the chain block until the spiral conveyor 4 rotates to the horizontal position;
s4, horizontally moving the spiral conveyor 4 forward by means of a chain block, and inserting the spiral conveyor 4 into the main drive 3;
s5, adjusting the oil pressure of the multi-stage oil cylinder to enable the multi-stage oil cylinder to rise, enabling the sliding block assembly 8-2 and the multi-stage oil cylinder to rise synchronously, enabling the rear part of the spiral conveyor 4 to rotate upwards synchronously with the rising of the sliding block assembly 8-2 until the included angle between the spiral conveyor 4 and the horizontal position is 4 degrees, and then connecting the joint bearing assembly 11 with the connecting plate 13;
s6, installing the cutter head slag scraping plate 1 on the cutter head, installing the slag chute 10 on the main drive 3, and finally installing the belt conveyor tail assembly 7 on the equipment bridge 6;
and S7, completing mode conversion after debugging each system.
In the prior art, the cutter head slag scraping plate 1 can guide the slag soil generated during the rotation of the cutter head into the slag chute 10 in an open mode, and the cutter head slag scraping plate 1 is detached in a soil pressure mode; the slag chute 10 is used for collecting slag soil in an open mode, the spiral conveyor 4 discharges the slag soil in the slag chute 10 through active slag collection, and the slag chute 10 is dismantled in a soil pressure mode; the central rotary joint 9 is a material channel, foam, bentonite or water for improving the slag can be conveyed to a nozzle in front of a cutter head in an earth pressure mode, and the central rotary joint 9 is detached in an open mode (without slag improvement).
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A mode switching device of a double-mode shield screw machine is characterized by comprising a connecting rotating mechanism and a lifting mechanism (8), wherein the connecting rotating mechanism is arranged at the front part of a screw conveyor (4), and the screw conveyor (4) is detachably connected with a main drive (3) or a front shield screw machine base through the connecting rotating mechanism; the lifting mechanisms (8) are symmetrically arranged on two sides of the spiral conveyor (4), the outer sides of the lifting mechanisms (8) are fixedly connected with a main beam of the splicing machine (5), and the inner sides of the lifting mechanisms (8) are connected with the spiral conveyor (4) in a sliding manner;
the lifting mechanism (8) comprises a pusher (8-1), a sliding block assembly (8-2) and a lifting mechanism slideway (8-3), and the lifting mechanism slideway (8-3) is symmetrically and fixedly arranged on a main beam of the assembling machine (5); the sliding block assembly (8-2) is arranged in the lifting mechanism slide way (8-3), one side of the sliding block assembly (8-2) is horizontally connected with the spiral conveyer (4) in a sliding mode through a screw machine track (12), and the other side of the sliding block assembly (8-2) is vertically connected with the lifting mechanism slide way (8-3) in a sliding mode; the pusher (8-1) is movably arranged in the lifting mechanism slide way (8-3), the pusher (8-1) is positioned at the lower part of the sliding block assembly (8-2), the movable end of the pusher (8-1) is fixedly connected with the sliding block assembly (8-2), and the fixed end of the pusher (8-1) is fixedly connected with the bottom of the lifting mechanism slide way (8-3).
2. The mode switching device of the double-mode shield screw machine according to claim 1, wherein the connecting and rotating mechanism comprises a knuckle bearing assembly (11), the inner surface of the knuckle bearing assembly (11) is fixedly connected with the screw conveyor (4), and the outer surface of the knuckle bearing assembly (11) is detachably connected with the main drive (3) or the front shield screw machine base.
3. The mode switching device of the double-mode shield spiral machine according to claim 2, wherein a connecting plate (13) is further arranged between the knuckle bearing assembly (11) and the main drive (3), one side of the connecting plate (13) is fixedly connected with the main drive (3), and the other side of the connecting plate (13) is detachably connected with the knuckle bearing assembly (11).
4. The mode switching device of the double-mode shield spiral machine according to claim 1 or 3, wherein the sliding block assembly (8-2) comprises a sliding block (8-2-1) and a connecting part (8-2-2), one side of the sliding block (8-2-1) is connected with the lifting mechanism slide way (8-3) in a sliding manner, and the other side of the sliding block (8-2-1) is fixedly connected with one side of the connecting part (8-2-2); the other side of the connecting part (8-2-2) is movably arranged in the screw machine track (12).
5. The double-mold shield screw mode switching device according to claim 4, wherein the screw track (12) comprises a sliding plate (12-1), a side plate (12-2) and a cover plate (12-3), the cover plate (12-3) and the sliding plate (12-1) are horizontally and symmetrically arranged on the screw conveyor (4), and the sliding plate (12-1) is fixedly connected with the screw conveyor (4); the upper part of the side plate (12-2) is vertically and fixedly connected with the sliding plate (12-1), and the lower part of the side plate (12-2) is detachably connected with the cover plate (12-3); one side of the side plate (12-2) is fixedly connected with the spiral conveyor (4), and the other side of the side plate (12-2) forms a groove with the sliding plate (12-1) and the cover plate (12-3); the connecting part (8-2-2) is movably arranged in the groove, and the length of the groove is greater than that of the connecting part (8-2-2).
6. The use method of the double-mode shield spiral machine mode switching device according to claim 1 or 5, characterized by comprising the following steps when the open mode is switched to the earth pressure mode:
s1, removing the connection between the knuckle bearing assembly (11) and the connecting plate (13), adjusting the oil pressure of the pusher (8-1) to enable the pusher (8-1) to descend, enabling the sliding block assembly (8-2) and the pusher (8-1) to descend synchronously, and enabling the rear part of the screw conveyor (4) to rotate downwards synchronously along with the descending of the sliding block assembly (8-2) until the screw conveyor (4) rotates to the horizontal position;
s2, pulling the screw conveyor (4) out of the main drive (3) and moving the screw conveyor (4) backwards to enable the tail part of the screw conveyor (4) to avoid the main drive (3);
s3, adjusting the oil pressure of the pusher (8-1) to lift the pusher (8-1), enabling the sliding block assembly (8-2) and the pusher (8-1) to lift synchronously, and enabling the screw conveyor (4) to rotate upwards synchronously along with the lifting of the sliding block assembly (8-2) until the front part of the screw conveyor (4) is opposite to the front shield screw base;
s4, enabling the screw conveyor (4) to move downwards in an inclined mode, and connecting the knuckle bearing assembly (11) with the front shield screw base;
when the soil pressure mode is changed to the open mode, the method comprises the following steps:
s1, removing the connection between the knuckle bearing assembly (11) and the front shield screw base, and pulling out the screw conveyor (4) from the front shield screw base;
s2, adjusting the oil pressure of the pusher (8-1) to enable the pusher (8-1) to descend, enabling the sliding block assembly (8-2) and the pusher (8-1) to descend synchronously, and enabling the screw conveyor (4) to rotate downwards synchronously along with the descending of the sliding block assembly (8-2) until the screw conveyor (4) rotates to the horizontal position;
s3, horizontally moving the screw conveyor (4) forward, and inserting the screw conveyor (4) into the main drive (3);
s4, adjusting the oil pressure of the pusher (8-1) to lift the pusher (8-1), enabling the sliding block assembly (8-2) and the pusher (8-1) to lift synchronously, enabling the rear part of the spiral conveyor (4) to rotate upwards synchronously along with the lifting of the sliding block assembly (8-2) until the included angle between the spiral conveyor (4) and the horizontal position is 4 degrees, and then connecting the joint bearing assembly (11) with the connecting plate (13).
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| CN110513117B true CN110513117B (en) | 2021-07-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111156012A (en) * | 2019-12-31 | 2020-05-15 | 中铁山河工程装备股份有限公司 | Can realize soil pressure TBM bimodulus shield structure machine of interior retooling of hole |
| CN112879028A (en) * | 2021-01-28 | 2021-06-01 | 中铁工程装备集团有限公司 | Full-face tunnel boring machine soil bin sediment water separation structure |
| CN113217010B (en) * | 2021-04-23 | 2023-02-07 | 中铁工程装备集团有限公司 | Dual-mode shield tunneling machine mode conversion construction method |
| CN115288710A (en) * | 2022-08-04 | 2022-11-04 | 深圳市地铁集团有限公司 | Can adopt entry driving machine of central spiral shell machine slag tap |
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| CN105696956A (en) * | 2016-03-29 | 2016-06-22 | 湖北中油科昊机械制造有限公司 | Drilling fluid while-drilling treating tanker |
| CN106437735B (en) * | 2016-11-07 | 2018-06-01 | 中铁工程装备集团有限公司 | Tunnel connection channel shield machine and its service channel driving method |
| JP2018127855A (en) * | 2017-02-10 | 2018-08-16 | 株式会社東芝 | Controller, control method and program of shield machine |
| CN208310785U (en) * | 2018-06-21 | 2019-01-01 | 中铁工程装备集团有限公司 | A kind of shield machine with screw conveyor element floating support device |
| CN109403999B (en) * | 2018-12-29 | 2024-08-06 | 中铁工程装备集团有限公司 | Double-mode shield tunneling machine for spiral slag tapping |
| CN109838242A (en) * | 2019-03-22 | 2019-06-04 | 中国铁建重工集团有限公司 | Development machine |
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