CN216110744U - Combined screw conveyor for shield machine - Google Patents

Abstract

The utility model relates to the technical field of shield tunneling machine muck transportation equipment, and discloses a combined screw conveyor for a shield tunneling machine, which comprises a belt screw conveyor and a shaft screw conveyor, wherein a feeding hole is formed in one end of the belt screw conveyor, a connecting cylinder is arranged at the other end of the belt screw conveyor, and the connecting cylinder is connected with the shaft screw conveyor; a first slag outlet is arranged below the connecting cylinder, and a blocking mechanism is arranged at one end of the shaft type screw conveyor close to the first slag outlet and used for blocking stones with large particle sizes from entering the shaft type screw conveyor. Through the combination of the belt type screw conveyor and the shaft type screw conveyor, the muck generated in the propelling process of the shield machine is conveyed by the belt type screw conveyor firstly, and is blocked by the blocking mechanism, so that the stone with larger grain diameter is discharged, the shaft type screw conveyor is prevented from being abraded, and the shaft type screw conveyor can effectively prevent the occurrence of a gushing phenomenon.

Description

Combined screw conveyor for shield machine

Technical Field

The utility model relates to the technical field of shield tunneling machine muck transportation equipment, in particular to a combined screw conveyor for a shield tunneling machine.

Background

The spiral conveyor is an important component of the earth pressure balance shield and is mainly used for smoothly discharging the muck in an earth bin and then transporting the muck out through the belt conveyor and a muck truck.

The screw conveyer has two main forms, one is a shaft type screw conveyer which is suitable for water-rich strata and fine-particle strata, the pressure in a soil bin is balanced by forming a soil plug to prevent water and soil gushing in the screw conveyer, the other is a belt type screw conveyer which can discharge dregs with larger particle size, reduce the abrasion to a screw shaft and a screw blade, but not easily form the soil plug to easily cause gushing, the two screw conveyer forms have certain applicability to the strata, the shaft type screw conveyer can discharge soil with smaller particle size, but can effectively prevent the occurrence of the gushing phenomenon, and the belt type screw conveyer is suitable for large-particle strata, but not easily form the soil plug to easily cause water and soil gushing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a combined screw conveyor for a shield machine, and aims to solve the problem that a single-form screw conveyor in the prior art is not suitable for being used in a high-water-pressure mixed stratum environment.

In order to achieve the purpose, the utility model provides the following technical scheme: the combined screw conveyor for the shield machine comprises a belt screw conveyor and a shaft screw conveyor, wherein a feed inlet is formed in one end of the belt screw conveyor, a connecting cylinder is arranged at the other end of the belt screw conveyor, and the connecting cylinder is connected with the shaft screw conveyor; a first driving mechanism is arranged on the belt type spiral conveyor, and a second driving mechanism is arranged on the shaft type spiral conveyor; a first slag outlet is arranged below the connecting cylinder, and a blocking mechanism is arranged at one end of the shaft type screw conveyor close to the first slag outlet and used for blocking stones with large particle sizes from entering the shaft type screw conveyor.

Furthermore, the blocking mechanism comprises a limiting grating, a clamping groove is formed in the shaft type screw conveyor, the limiting grating is installed in the clamping groove, a rubber pad is arranged at the edge of the limiting grating, and a gap between the limiting grating and the clamping groove is blocked by the rubber pad.

Furthermore, the limiting grating is of a net structure, and the bottom of the connecting cylinder body is arranged in a downward inclined mode at the periphery of the first slag outlet.

Further, shaft type screw conveyer includes the second grade barrel, is keeping away from the one end of first slag notch is equipped with the second slag notch the supporting mechanism is installed to the below of second grade barrel.

Further, the supporting mechanism comprises an extension block fixedly installed on the outer wall of the secondary cylinder, a sleeve is fixedly installed at the lower end of the extension block, and a vertical rod is movably installed in the sleeve.

Further, the joint cover is installed to telescopic inner wall, be equipped with a plurality of joint pieces on the outer wall of pole setting, the joint piece with joint cover joint.

Furthermore, be equipped with a plurality of card holes in the pole setting, the downthehole spring that is equipped with of card, the joint piece is connected the tip of spring.

Furthermore, the inner wall of the first slag outlet is provided with a limiting disc and a stabilizing rod, the end part of the stabilizing rod is provided with a supporting rod, and the supporting rod is positioned below the limiting disc.

Furthermore, an electromagnetic block is installed at the upper end of the supporting rod, a pressing sleeve is sleeved at the upper end of the supporting rod, an upper magnetic block is installed on the inner wall of the pressing sleeve, the upper magnetic block and the electromagnetic block are magnets with like poles repelling each other, and a soil pressure sensor is installed at the upper end of the pressing sleeve.

Further, the belt type screw conveyor is obliquely arranged, and the position of the feed inlet is lower than that of the first slag outlet; the shaft type screw conveyer is horizontally arranged.

Compared with the prior art, the combined screw conveyor for the shield machine provided by the utility model has the advantages that the belt screw conveyor and the shaft screw conveyor are combined, so that the muck generated in the propelling process of the shield machine is conveyed by the belt screw conveyor firstly, and is blocked by the blocking mechanism, so that stones with larger particle sizes are discharged, the shaft screw conveyor is prevented from being abraded, and the shaft screw conveyor can effectively prevent the occurrence of a gushing phenomenon.

Drawings

Fig. 1 is a schematic overall structure diagram of a combined screw conveyor for a shield tunneling machine according to the present invention;

FIG. 2 is a partial cross-sectional view of a belt-type screw conveyor of the present invention for a combined screw conveyor of a shield tunneling machine;

FIG. 3 is a partial cross-sectional view of an axial screw conveyor of the present invention for use with a combined screw conveyor for a shield tunneling machine;

FIG. 4 is a schematic view of a connecting cylinder structure of the combined screw conveyor for a shield tunneling machine according to the present invention;

FIG. 5 is a view showing a state after the pressing sleeve of the combined screw conveyor for the shield tunneling machine is pressed down;

FIG. 6 is a schematic structural view of a limiting disc of the combined screw conveyor for the shield machine according to the present invention;

fig. 7 is a partial exploded view of a second drive mechanism of the modular screw conveyor for a shield tunneling machine according to the present invention.

In the figure: 1. a feed inlet; 2. feeding a hopper; 3. a belt-type screw conveyor; 31. a first-stage cylinder; 32. a fixed block; 33. a movable block; 34. supporting legs; 35. connecting the cylinder body; 36. a connecting flange; 37. a viewing port; 38. a first slag outlet; 381. a limiting disc; 3811. mounting a disc; 3812. supporting the strips; 3813. a through hole; 382. a stabilizing rod; 383. a strut; 384. an electromagnetic block; 385. pressing the sleeve; 386. an upper magnetic block; 387. a soil pressure sensor; 4. a shaft screw conveyor; 41. a secondary cylinder; 42. a card slot; 43. a connecting port; 44. a blocking mechanism; 441. a restraint grille; 442. a rubber pad; 443. a handle; 45. a shaft second slag outlet; 46. a support mechanism; 461. an extension block; 462. a sleeve; 463. erecting a rod; 464. a clamping sleeve; 465. a clamping block; 466. a cross bar; 5. a first drive mechanism; 51. a first motor; 52. a first rotating shaft; 53. a first gear; 54. a first worm; 55. helical blades of the belt-type helical conveyor; 6. a second drive mechanism; 61. a second motor; 62. a second rotating shaft; 63. a second gear; 64. a screw shaft; 65. a threaded member; 66. screw blade of shaft screw conveyer.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The combined screw conveyor for the shield machine comprises a belt type screw conveyor 3 and a shaft type screw conveyor 4, wherein a feeding hole 1 is formed in one end of the belt type screw conveyor 3, a connecting cylinder 35 is arranged at the other end of the belt type screw conveyor 3, and the connecting cylinder 35 is connected with the shaft type screw conveyor 4; a first driving mechanism 5 is arranged on the belt type screw conveyor 3, and a second driving mechanism 6 is arranged on the shaft type screw conveyor 4; a first slag outlet 38 is arranged below the connecting cylinder 35, and a blocking mechanism 44 is arranged at one end of the shaft-type screw conveyor 4 close to the first slag outlet 38 and used for blocking large-particle-size stones from entering the shaft-type screw conveyor 4.

According to the combined type screw conveyor for the shield machine, provided by the utility model, the muck generated in the propelling process of the shield machine is conveyed by the belt type screw conveyor firstly through the combination of the belt type screw conveyor and the shaft type screw conveyor, and is blocked by the blocking mechanism, so that stones with larger particle sizes are discharged, the shaft type screw conveyor is prevented from being abraded, and the shaft type screw conveyor can effectively prevent the occurrence of a gushing phenomenon.

Specifically, referring to fig. 1, the combined screw conveyor for the shield machine comprises a belt screw conveyor 3 and a shaft screw conveyor 4 installed on one side of the belt screw conveyor 3, wherein a feeding port 1 is installed at one end of the belt screw conveyor 3, a feeding hopper 2 is installed at the upper end of the feeding port 1, a first driving mechanism 5 is installed at the upper end of the belt screw conveyor 3, a second driving mechanism 6 is installed at the upper end of the shaft screw conveyor 4, a belt conveyor is installed at the tail end of the shaft screw conveyor 4, discharged muck is conveyed out through the belt conveyor, the belt screw conveyor 3 is obliquely arranged, and the shaft screw conveyor 4 is horizontally arranged to facilitate discharging.

Referring to fig. 2, the belt-type screw conveyor 3 includes a primary cylinder 31 and fixed blocks 32 fixedly installed at both sides of the primary cylinder 31, a movable block 33 is movably installed at an outer end of the fixed block 32, a support leg 34 is fixedly installed at a lower end of the movable block 33, a connection cylinder 35 is further installed at one side of the primary cylinder 31 for supporting the belt-type screw conveyor 3, a connection flange 36 is installed at an outer end of the connection cylinder 35, the connection cylinder 35 is fixedly connected with the shaft-type screw conveyor 4 through the connection flange 36, the connection is stable, an observation port 37 is installed on an outer surface of the connection cylinder 35 for observing accumulation of large-particle pebbles therein, a first slag outlet 38 is fixedly installed at a lower end of the connection cylinder 35 for discharging large-particle pebbles, a muck car is installed at a lower end of the first slag outlet 38, and is discharged into the muck car through the first slag outlet 38 for discharging the large-particle pebbles, large pebbles can be discharged as much as possible to reduce the abrasion of the screw conveyer.

Referring to fig. 3, the shaft type screw conveyor 4 includes a secondary cylinder 41 and a slot 42 formed on the outer surface of the secondary cylinder 41, a connector 43 communicating with the flange 36 is formed on the outer side of the secondary cylinder 41, a blocking mechanism 44 is installed inside the secondary cylinder 41, a second slag outlet 45 is fixedly installed at one end of the secondary cylinder 41 far from the connector 43, small particles are mainly discharged, a soil plug is formed inside the cylinder to resist a gushing phenomenon under the action of high water pressure, a gate is arranged at the second slag outlet 45, a belt conveyor is installed at the lower end of the second slag outlet, and the discharged slag soil is transported out by the belt conveyor.

Referring to fig. 3, the blocking mechanism 44 includes a limiting grid 441 and a rubber pad 442 mounted on the upper end of the limiting grid 441, a handle 443 is mounted on the upper end of the rubber pad 442, the rubber pad 442 is matched with the slot 42, the limiting grid 441 can be mounted inside the secondary cylinder 41 through the handle 443, the rubber pad 442 can seal the joint of the limiting grid 441 and the slot 42, the limiting grid 441 can be conveniently detached and replaced in time, and the limiting grid 441 is mounted to limit the particle size entering the secondary screw machine.

Referring to fig. 3, supporting mechanism 46 is installed to the lower extreme of second grade barrel 41, supporting mechanism 46 includes extension piece 461 of fixed mounting in the second grade barrel 41 outside and installs at the sleeve 462 of extension piece 461 lower extreme, the lower extreme movable mounting of sleeve 462 has pole setting 463, joint cover 464 is installed to the inner wall of sleeve 462, the surface mounting of pole setting 463 has a plurality of groups and joint cover 464 assorted joint piece 465, the inner wall fixed mounting of pole setting 463 has horizontal pole 466, adjust the tail end of second grade barrel 41 to certain height, and with the joint piece 465 and the joint cover 464 phase-match of corresponding height, can fix this height, be convenient for adapt to the not high belt conveyor, excellent in use effect.

Referring to fig. 4, the first driving mechanism 5 includes a first motor 51 mounted at the upper end of the primary cylinder 31 and a first rotating shaft 52 mounted at the output end of the first motor 51, the first motor 51 is turned on to rotate the first rotating shaft 52, the first gear 53 is mounted at the lower end of the first rotating shaft 52 to drive the first gear 53 to rotate, a first worm 54 is mounted at one side of the first gear 53, a belt-type screw conveyor screw blade 55 is mounted at one end of the first worm 54, and the first gear 53 drives the first worm 54 to rotate, so that the belt-type screw conveyor screw blade 55 rotates inside the primary cylinder 31, that is, the muck can be rolled and conveyed to the connecting cylinder 35 at the tail of the primary cylinder 31.

Referring to fig. 4, a limit disc 381 is installed on the inner wall of the first slag hole 38, a stabilizing rod 382 is installed on the inner wall of the lower end of the limit disc 381 on the first slag hole 38, a strut 383 is installed on the upper end of the stabilizing rod 382, an electromagnetic block 384 is installed on the upper end of the strut 383, a pressing sleeve 385 is sleeved on the upper end of the pressing sleeve 385, a soil pressure sensor 387 is installed on the upper end of the pressing sleeve 385, the soil pressure sensor 387 is externally connected with a controller and is in signal connection with the first motor 51, the belt-type screw conveyor 3 is subjected to torque change and is provided with the soil pressure sensor 387 for comprehensive judgment, the type of the soil pressure sensor 387 is WIKAS-20, data information of the torque and the soil pressure is fed back to the controller, the controller adjusts the rotating speed of the first motor 51 according to the information, further adjusts the slag discharging speed of the belt-type screw conveyor 3, and provides reference for slag discharging.

Referring to fig. 4-6, the limiting plate 381 includes a mounting plate 3811 fixedly mounted on the inner wall of the first slag hole 38 and a supporting bar 3812 fixedly mounted on the inner wall of the mounting plate 3811, a through hole 3813 communicated with the pressing sleeve 385 is processed on the inner wall of the supporting bar 3812, when large pebbles are accumulated at the first slag hole 38, when observed from the observation port 37, the switch of the electromagnetic block 384 is turned on to electrify the electromagnetic block 384, the inner wall of the pressing sleeve 385 is mounted with an upper magnetic block 386 magnetically connected with the electromagnetic block 384, and the upper magnetic block 386 and the electromagnetic block 384 are magnets with like polarities repelling each other, so that the pressing sleeve 385 and the electromagnetic block 384 are suspended and the through hole 3813 is blocked, thereby preventing particles from being discharged and achieving the valve effect, if the magnetism of the electromagnetic block 384 is gradually reduced by the switch, the upper magnetic block 386 drives the pressing sleeve 385 to gradually approach the electromagnetic block 384, and at this time, a certain distance exists between the pressing sleeve 385 and the through hole 3813, can make large granule pebble whereabouts, the opening is bigger, and the whereabouts volume is just bigger, and is fast more, through the magnetism of adjusting electromagnetism piece 384, adjustable falling speed promptly, to the strip 3812 and be provided with the multiunit, and all fixed mounting is in the inner wall of mounting disc 3811, the multiunit the strip 3812 combination that supports be disc structure, if large granule pebble weight is too big, the strip 3812 is pressed to the gravity down and makes wherein produce the space, conveniently arranges the material.

Referring to fig. 7, the second driving mechanism 6 includes a second motor 61 mounted at the upper end of the secondary cylinder 41 and a second rotating shaft 62 mounted at the output end of the second motor 61, the second motor 61 is turned on to rotate the second rotating shaft 62, a second gear 63 is mounted at the lower end of the second rotating shaft 62, a screw shaft 64 is mounted inside the secondary cylinder 41, a screw 65 engaged with the second gear 63 and a shaft-type screw conveyor screw vane 66 disposed inside the secondary cylinder 41 are mounted on the outer surface of the screw shaft 64, the screw 65 and the second gear 63 form a worm drive to rotate the screw shaft 64 and the shaft-type screw conveyor screw vane 66 on the outer surface of the screw shaft 64, the small-particle soil residue transmitted from the belt-type screw conveyor screw vane 55 to the connecting cylinder 35 can be conveyed to the second slag outlet 45, and the flow rate of water is reduced after passing through the belt-type screw conveyor 3 and the shaft-type screw conveyor 4 under the high water pressure, in particular to a shaft type screw conveyor 4 which can effectively form 'soil plug', and can control the occurrence of 'gushing' phenomenon.

The working principle is as follows: when the shield is propelled in a high-water-pressure mixed stratum, the feeding hopper 2 extends into the soil bin to feed materials, so that the materials can conveniently enter the inside of the primary cylinder 31, one side of the primary cylinder 31 is provided with the connecting cylinder 35, the first motor 51 is started to work, the first rotating shaft 52 is made to rotate, the lower end of the first rotating shaft 52 is provided with the first gear 53, the first gear 53 can be driven to rotate, one side of the first gear 53 is provided with the first worm 54, one end of the first worm 54 is provided with the belt type screw conveyor helical blade 55, the first gear 53 drives the first worm 54 to rotate, the belt type screw conveyor helical blade 55 can be made to rotate in the primary cylinder 31, namely, muck can be rolled and conveyed to the connecting cylinder 35 at the tail part of the primary cylinder 31, the outer surface of the connecting cylinder 35 is provided with the observation port 37, the upper end of the pressing sleeve 385 is provided with the soil pressure sensor 387, and the soil pressure sensor 387 is externally connected with the controller, the belt-type screw conveyor 3 is in signal connection with a first motor 51, the torque change of the belt-type screw conveyor 3 and the arrangement of an earth pressure sensor 387 are used for comprehensive judgment, data information of the torque and the earth pressure are fed back to a controller, the controller adjusts the rotating speed of the first motor 51 according to the information so as to adjust the slag discharging speed of the belt-type screw conveyor 3 and provide reference for discharging the slag, a mounting disc 3811 is mounted on the inner wall of a first slag outlet 38, a supporting strip 3812 is mounted on the inner wall of the mounting disc 3811, a through hole 3813 communicated with a pressing sleeve 385 is processed on the inner wall of the supporting strip 3812, when large-particle pebbles are accumulated at the first slag outlet 38, the observation hole 37 is used for observing, a switch of the electromagnetic block 384 is started to electrify the electromagnetic block 384, an upper magnetic block 386 magnetically connected with the electromagnetic block 384 is mounted on the inner wall of the pressing sleeve 385, and the upper magnetic block 386 and the electromagnetic block 384 are magnets with the same polarity and the same polarity, so that the pressing sleeve 385 and the electromagnetic block 384 are suspended in the air and block 3813, the discharge of particles can be avoided, the effect of the valve is achieved, if the magnetism of the electromagnetic block 384 is gradually reduced by using a switch, the upper magnetic block 386 drives the pressing sleeve 385 to gradually approach the electromagnetic block 384, at the moment, a certain distance exists between the pressing sleeve 385 and the through hole 3813, the large-particle pebbles can fall, the larger the opening is, the larger the falling amount is, the higher the falling speed is, namely, the falling speed can be adjusted by adjusting the magnetism of the electromagnetic block 384, the supporting strips 3812 are provided with a plurality of groups which are fixedly arranged on the inner wall of the mounting disc 3811, the plurality of groups of supporting strips 3812 are combined into a disc-shaped structure, if the large-particle pebbles are too heavy, the supporting strips 3812 are pressed by gravity to generate gaps, the first slag outlet 38 is fixedly arranged at the lower end of the connecting cylinder 35, the slag car is arranged at the lower end of the first slag outlet 38, after the observation port 37 finds that the large particles are accumulated to a certain degree, the upper hopper 2 is closed, and the first slag outlet 38 is opened, the slag is discharged into the slag car through the first slag hole 38, slag discharge of the screw conveyor is stopped, the limiting grating 441 can be installed inside the secondary cylinder 41 through the handle 443, the rubber pad 442 can seal the joint of the limiting grating 441 and the clamping groove 42, the limiting grating 441 is arranged inside the secondary cylinder 41 and is used for limiting the particle size entering the secondary screw conveyor, the second motor 61 is started to work, the screw shaft 64 and the screw blade 66 of the screw shaft 64 on the outer surface of the screw shaft 64 can be driven to rotate, the second slag hole 45 is fixedly installed at one end, far away from the connecting port 43, of the secondary cylinder 41, small-particle slag soil transmitted to the connecting cylinder 35 by the screw blade 55 of the belt screw conveyor can be conveyed to the second slag hole 45, the gate is arranged at the second slag hole 45, and the belt conveyor is installed at the lower end of the second slag hole 45, and the discharged slag soil is conveyed out through the belt conveyor.

The utility model has the beneficial effects that:

1. the utility model provides a combined screw conveyor for a shield machine, wherein one end of a belt screw conveyor is provided with a feed inlet, the upper end of the feed inlet is provided with a feeding hopper, the feeding hopper extends into a soil bin for feeding and is convenient to enter the interior of a primary cylinder, one side of the primary cylinder is provided with a connecting cylinder, the connecting cylinder is connected with a secondary cylinder through a connecting flange, the belt screw conveyor is obliquely arranged, a shaft screw conveyor is horizontally arranged, the upper end of the primary cylinder is provided with a first motor, the output end of the first motor is provided with a first rotating shaft, the first motor is started to work to enable the first rotating shaft to rotate, the lower end of the first rotating shaft is provided with a first gear which can drive the first gear to rotate, one side of the first gear is provided with a first worm, one end of the first worm is provided with a belt screw conveyor helical blade, and the first worm is driven to rotate by the first gear, can be so that belt screw conveyer helical blade is at the inside rotation of one-level barrel, can be drawn into the dregs and transport the connecting cylinder department to one-level barrel afterbody, connecting cylinder's surface mounting has the viewing aperture, connecting cylinder's lower extreme fixed mounting has first slag notch, large granule cobble can discharge as far as possible, with the wearing and tearing that reduce screw conveyer, the lower extreme of first slag notch is provided with the dregs car, after certain degree is piled up to the large granule through the viewing aperture discovery, close the feeding funnel, and open first slag notch, discharge to the dregs car in through first slag notch, stop screw conveyer and arrange the sediment, second grade screw conveyer front portion arranges the particle diameter that the restriction grid is used for the restriction to get into second grade screw conveyer, second grade screw conveyer slag notch sets up one gate, be convenient for discharge dregs to belt conveyer.

2. The combined screw conveyor for the shield machine, provided by the utility model, has the advantages that the upper end of the limiting grid is provided with the rubber pad, the upper end of the rubber pad is provided with the handle, the rubber pad is matched with the clamping groove, the limiting grid can be arranged inside the secondary cylinder body through the handle, the rubber pad can seal the joint of the limiting grid and the clamping groove, the disassembly and the assembly of the limiting grid are convenient to complete, the replacement is convenient in time, the particle size entering the secondary screw conveyor is limited through the installation of the limiting grid, the outer side of the secondary cylinder body is provided with the extending block, the lower end of the extending block is provided with the sleeve, the lower end of the sleeve is movably provided with the vertical rod, the inner wall of the sleeve is provided with the clamping sleeve, the outer surface of the vertical rod is provided with a plurality of groups of clamping blocks matched with the clamping sleeve, the inner wall of the vertical rod is fixedly provided with the cross rod, the tail end of the secondary cylinder body is adjusted to a certain height, and the clamping blocks with the clamping sleeve with the corresponding height are matched with the clamping sleeve, can fix this height, be convenient for adapt to not co-altitude band conveyer, excellent in use effect.

3. The utility model provides a combined screw conveyor for a shield machine, wherein a support rod is arranged at the upper end of a stabilizing rod, an electromagnetic block is arranged at the upper end of the support rod, a pressing sleeve is sleeved at the upper end of the support rod, a soil pressure sensor is arranged at the upper end of the pressing sleeve, the soil pressure sensor is externally connected with a controller and is in signal connection with a first motor, the torque change of a belt screw conveyor and the arrangement of the soil pressure sensor are comprehensively judged, the data information of the torque and the soil pressure is fed back to the controller, the controller adjusts the rotating speed of the first motor according to the information so as to adjust the slag discharging speed of the belt screw conveyor and provide reference for the discharge of slag soil, a mounting disc is arranged on the inner wall of a first slag outlet, a supporting strip is arranged on the inner wall of the supporting strip, a through hole communicated with the pressing sleeve is processed on the inner wall of the supporting strip, when large-particle pebbles are accumulated at the first slag outlet, the observation port is observed by an observation port, the switch of the electromagnetic block is opened so that the electromagnetic block is electrified, install the last magnetic path of being connected with electromagnetic block magnetism according to the inner wall of pressing the cover, and go up the magnetic path and be like same polarity repellent's magnet with the electromagnetic block, can make according to pressing the cover unsettled and plug up the through hole with the electromagnetic block, can avoid the granule to discharge, play the effect of valve, if utilize the switch to reduce the magnetism of electromagnetic block gradually, it then drives and presses the cover to be close to the electromagnetic block gradually to go up the magnetic path, press the cover this moment then and exist certain distance between the through hole, can make the whereabouts of large granule cobble stone, the opening is big more, the whereabouts volume just is big more, it is fast more, through the magnetism of adjusting the electromagnetic block promptly, adjustable whereabouts speed, it is provided with the multiunit to support the strip, and equal fixed mounting is at the inner wall of mounting disc, the multiunit support the strip combination to be disc structure, if large granule cobble weight is too big, the strip is pressed under the gravity makes wherein to produce the space, conveniently arrange the material.

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 utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The combined screw conveyor for the shield machine is characterized by comprising a belt screw conveyor and a shaft screw conveyor, wherein a feeding hole is formed in one end of the belt screw conveyor, a connecting cylinder is arranged at the other end of the belt screw conveyor, and the connecting cylinder is connected with the shaft screw conveyor; a first driving mechanism is arranged on the belt type spiral conveyor, and a second driving mechanism is arranged on the shaft type spiral conveyor; a first slag outlet is arranged below the connecting cylinder, and a blocking mechanism is arranged at one end of the shaft type screw conveyor close to the first slag outlet and used for blocking stones with large particle sizes from entering the shaft type screw conveyor.

2. The combined screw conveyor for a shield tunneling machine according to claim 1, wherein the blocking mechanism includes a limiting grid, a slot is formed in the shaft screw conveyor, the limiting grid is installed in the slot, a rubber pad is disposed on an edge of the limiting grid, and the rubber pad blocks a gap between the limiting grid and the slot.

3. The modular screw conveyor for a shield tunneling machine according to claim 2, wherein said limiting grid is a net structure, and the bottom of said connecting cylinder is disposed in a downward inclination around said first slag hole.

4. The modular screw conveyor for a shield tunneling machine according to claim 3, wherein said shaft screw conveyor comprises a secondary cylinder, a second slag hole is provided at an end remote from said first slag hole, and a support mechanism is mounted below said secondary cylinder.

5. The modular screw conveyor for a shield tunneling machine of claim 4, wherein the support mechanism comprises an extension block fixedly mounted on the outer wall of the secondary cylinder, a sleeve is fixedly mounted at the lower end of the extension block, and a vertical rod is movably mounted in the sleeve.

6. The combined screw conveyor for the shield tunneling machine according to claim 5, wherein a clamping sleeve is mounted on the inner wall of the sleeve, a plurality of clamping blocks are arranged on the outer wall of the upright rod, and the clamping blocks are clamped with the clamping sleeve.

7. The combined screw conveyor for the shield tunneling machine according to claim 6, wherein a plurality of locking holes are provided on the vertical rod, springs are provided in the locking holes, and the locking blocks are connected to ends of the springs.

8. The modular screw conveyor for a shield tunneling machine according to claim 7, wherein the inner wall of the first slag outlet is provided with a limiting disk and a stabilizing rod, the end of the stabilizing rod is provided with a support rod, and the support rod is located below the limiting disk.

9. The combined screw conveyor for the shield tunneling machine according to claim 8, wherein an electromagnetic block is mounted at the upper end of the supporting rod, a pressing sleeve is sleeved at the upper end of the supporting rod, an upper magnetic block is mounted on the inner wall of the pressing sleeve, the upper magnetic block and the electromagnetic block are magnets with like poles repelling each other, and a soil pressure sensor is mounted at the upper end of the pressing sleeve.

10. The modular screw conveyor for a shield tunneling machine according to any one of claims 1-9, wherein said belt screw conveyor is inclined, and the feed inlet is located at a position lower than the first slag outlet; the shaft type screw conveyer is horizontally arranged.

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