CN217481271U - Double-channel tunneling machine - Google Patents

Abstract

The utility model relates to a tunnel construction equipment technical field, concretely relates to binary channels entry driving machine. An object of the utility model is to protect a binary channels entry driving machine, binary channels entry driving machine include the blade disc and the shield body, and shield body front portion is provided with the air cushion ballast room, forms the excavation cabin between the preceding cabin board of air cushion ballast room and the blade disc. The lower part of the air cushion pressure regulating cabin is provided with a normal pressure open space, so that the maintenance of the equipment in the normal pressure open space is convenient and safe. The tunneling machine further comprises a screw conveyor and a slurry discharge pipeline of the excavation cabin, a screw conveyor mounting opening is formed in the front partition plate of the normal-pressure open space, and a conveyor gate is arranged at the screw conveyor mounting opening; the excavation cabin slurry discharge pipeline is arranged in the front partition plate area near the screw conveyor, the front end of the excavation cabin slurry discharge pipeline extends into the excavation cabin, a slurry discharge pipe valve is arranged on the excavation cabin slurry discharge pipeline, the switching of the slurry discharge mode of the heading machine can be conveniently realized by adjusting the opening and closing of a conveyor gate and the slurry discharge pipe valve, and the construction efficiency is improved.

Description

Double-channel heading machine

Technical Field

The utility model relates to a tunnel construction equipment technical field, concretely relates to binary channels entry driving machine.

Background

During the tunneling process, the tunneling machine encounters complicated and variable geological conditions, for example, in a long tunneling interval, the geological conditions may change from a stable rock stratum to a soft water-bearing high-water-pressure stratum, a broken crack or a cavity stratum. The variable geological conditions make the development machine which operates in a single mode difficult to complete construction tasks, and in order to solve the problems, the development machine which is provided with double-row slag channels and can switch different development modes according to different stratum conditions to adapt to the stratum conditions to complete development tasks is invented.

Chinese patent application publication No. CN111119916A discloses a muddy water-soil pressure dual-mode shield machine loaded with two crushers, which comprises an air cushion cabin, namely an air cushion pressure regulating cabin, a front crusher and a screw conveyor which are arranged at the lower part of the air cushion cabin, a slurry discharge pipeline and a muck conveying mechanism, wherein the shield machine realizes slag discharge in a soil pressure mode through the screw conveyor, a muck extension box and a dilution box, and realizes slag discharge in a muddy water mode through the front crusher and the slurry discharge pipeline.

The spiral conveyer and other equipment of the shield tunneling machine are arranged in the air cushion cabin, and due to the muddy water in the air cushion cabin and the high pressure, the maintenance process of the equipment is time-consuming and labor-consuming and has certain dangerousness.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a binary channels entry driving machine for solve current binary channels entry driving machine because of equipment parts such as screw conveyer are in the air cushion under-deck, because there are muddy water and pressure higher in the air cushion under-deck, make the maintenance process of above-mentioned equipment hard consuming time, and have certain dangerous problem.

The utility model relates to a binary channels entry driving machine adopts following technical scheme:

the double-channel tunneling machine comprises a cutter head and a shield body, wherein an air cushion pressure regulating cabin is arranged at the front part of the shield body, an excavation cabin is formed between a front cabin plate of the air cushion pressure regulating cabin and the cutter head, the double-channel tunneling machine also comprises a screw conveyor for discharging dregs in the excavation cabin and a slurry discharging pipeline of the excavation cabin, the screw conveyor comprises a conveying cylinder, a transmission shaft arranged in the conveying cylinder, a power device for driving the transmission shaft and a slag discharging screw blade, the slag discharging screw blade is driven by the transmission shaft to discharge slag to the rear part of the shield body, a normal-pressure open space is arranged below the air cushion pressure regulating cabin, the normal pressure open space is separated from the air cushion pressure regulating cabin and is communicated with the open region at the rear part of the shield body, a spiral conveyor mounting port for a slag discharge spiral blade to extend into the excavation cabin is formed in a front partition plate of the normal pressure open space, the front end of the spiral conveyor is positioned in the normal pressure open space, and a conveyor gate for opening and closing the spiral conveyor mounting port is arranged at the spiral conveyor mounting port; the slurry discharging pipeline of the excavation cabin penetrates through the normal-pressure open space, the front end of the slurry discharging pipeline of the excavation cabin extends into the excavation cabin, and a slurry discharging pipe valve is arranged on the slurry discharging pipeline of the excavation cabin; when the gate of the conveyor is opened and the gate of the slurry discharge pipe valve is closed, the dual-channel tunneling machine is in a slag discharge mode of the screw conveyor, the screw conveyor discharges the slag in the excavation cabin, and when the gate of the slurry discharge pipe valve is opened and the gate of the conveyor is closed, the dual-channel tunneling machine is in a muddy water slag discharge mode and discharges the slag in the excavation cabin through the slurry discharge pipeline of the excavation cabin.

Has the advantages that: in the double-channel tunneling machine of the utility model, a normal pressure open space is arranged below the air cushion pressure regulating cabin, the normal pressure open space is separated from the air cushion cabin, the front end of the screw conveyer is positioned in the normal pressure open space, and the slurry discharging pipeline of the excavation cabin passes through the normal pressure open space, so that when the parts of the screw conveyer and the slurry discharging pipeline of the excavation cabin, which are positioned in the normal pressure open space, are maintained, the muddy water in the air cushion pressure regulating cabin does not need to be pumped and discharged, the air pressure in the air cushion pressure regulating cabin is adjusted, and the maintenance process is more convenient and safer; be provided with the screw conveyer installing port that supplies row sediment helical blade to stretch into the excavation cabin on the preceding baffle in the open space of ordinary pressure, installing port department is provided with the conveyer gate that is used for switching screw conveyer installing port, and be provided with the thick liquid pipe valve of arranging on the thick liquid pipe of excavation cabin row, the setting up of conveyer gate and thick liquid pipe valve makes the entry driving machine when meetting different geological conditions, can realize the switching of arranging the sediment mode under the different tunnelling modes through the switching of conveyer gate and thick liquid pipe valve of arranging, adaptability is wider, and efficiency is higher.

Furthermore, a slag outlet and a slag inlet positioned at the front end of the conveying cylinder are arranged on the conveying cylinder, a crushing device which is communicated with the slag outlet and is used for crushing the slag discharged from the slag outlet is also arranged in the shield body, the crushing device comprises a dilution box and a crusher, the dilution box is connected with a dilution box slurry inlet pipeline which provides slurry for the crusher, and the crusher is provided with a crusher slag outlet; the crusher residue discharge port is connected with a crusher slurry discharge pipeline, a residue discharge pump is arranged on the crusher slurry discharge pipeline, and the residue discharge pump is used for discharging crushed residue soil. The crushing device is arranged to dilute the residue soil discharged from the residue outlet and crush the residue soil with large particle size, so that the residue soil with large particle size is prevented from blocking the slurry discharge pipeline.

Furthermore, the excavation cabin slurry discharge pipeline comprises a shared slurry discharge pipeline which is communicated with the crusher slurry discharge pipeline, so that slurry discharged from the crusher slurry discharge pipeline enters the shared slurry discharge pipeline and then is discharged to the ground. The setting of sharing row's thick liquid pipeline saves the inner space of entry driving machine shield body more, and has reduced the consumptive material cost.

Further, screw conveyer installs at the shield internally, and a conveying section of thick bamboo includes first shell ring and the second shell ring of arranging along direction of delivery, the slag inlet sets up the front end at first shell ring, the slag notch sets up on first shell ring, and the transmission shaft rotates the configuration on the second shell ring, is provided with flexible actuating mechanism between first shell ring and the second shell ring, and flexible actuating mechanism is used for driving second shell ring and transmission shaft to retreat and withdraw from the excavation cabin until row's sediment helical blade's front end. The spiral conveyer is arranged into a telescopic cylinder section, so that the size is small, and the space inside the shield body is saved.

Furthermore, a power device of the screw conveyor is arranged at the rear end of the conveying cylinder, a reverse helical blade which is arranged at the rear side of the slag outlet and used for conveying the slag forward is arranged in the second cylinder section, and the slag discharging helical blade is arranged at the front side of the reverse helical blade. The setting of reverse helical blade can carry the dregs of a river back to the slag notch piling up at the slag notch rear side for screw conveyer's operation is reliable and more stable.

Furthermore, the front end of a first cylindrical shell section of the spiral conveyor is fixedly connected with a front partition plate in a normal-pressure open space, and the rear end of the first cylindrical shell section is fixed in the shield body through a connecting piece. The screw conveyor is fixed in the shield body through the first shell ring, so that the mounting mode is simpler, and the internal space of the shield body is saved.

Furthermore, the telescopic driving mechanism of the screw conveyor is a hydraulic cylinder, and two ends of the hydraulic cylinder are fixedly connected with the outer wall of the first cylindrical section and the outer wall of the second cylindrical section respectively. The hydraulic cylinder is used as a driving mechanism, and the driving mechanism is simple in structure and stable and reliable in driving.

Furthermore, the front end of a transmission shaft of the screw conveyor is fixed with the slag discharge helical blade, and the reverse helical blade is fixed on the periphery of the transmission shaft. The front end of the transmission shaft is fixed with the slag discharging helical blade, so that the flow of slag soil which can be conveyed by the slag discharging helical blade is larger, and the slag soil is not easy to block.

Further, the crushing device is installed below the screw conveyor. The crushing device is arranged below the screw conveyor, the structure is more compact, and the inner space of the shield body is saved.

Further, the crusher of the crushing device is a jaw crusher. The jaw crusher has better crushing effect on the residue soil with large particle size and is not easy to block.

Drawings

Fig. 1 is a partial schematic view of the whole double-channel heading machine and a screw conveyor of the utility model;

fig. 2 is a schematic view of a screw conveyor of the double-channel heading machine of the invention;

FIG. 3 is a partial schematic view of the whole and slurry discharge piping diagram of the dual-channel tunneling machine of the present invention;

FIG. 4 is a view taken along direction A of FIG. 3;

in the figure: 1. a cutter head; 11. a palm surface; 2. an air cushion pressure regulating cabin; 3. excavating a cabin; 4. opening a space at normal pressure; 41. a front bulkhead; 411. a screw conveyor mounting port; 412. a conveyor gate; 5. a screw conveyor; 51. a delivery cartridge; 511. a first shell ring; 5111. a slag inlet; 5112. a slag outlet; 512. a second shell ring; 52. a drive shaft; 53. a hydraulic motor; 54. deslagging helical blades; 55. a reverse helical blade; 56. a hydraulic cylinder; 6. a crushing device; 61. a dilution tank; 62. a jaw crusher; 7. excavating a cabin slurry discharge pipeline; 71. a slurry discharge pipe valve; 72. sharing a slurry discharge pipeline; 74. a crusher slurry discharge pipeline; 8. a dilution tank slurry inlet pipeline; 9. a propulsion system.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, which may be present, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrases "comprising an … …," or the like, do not exclude the presence of such elements, processes, or methods.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly to each other. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the term "provided" may be used in a broad sense, for example, the object provided may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

The present invention will be described in further detail with reference to examples.

The utility model relates to a specific embodiment 1 of binary channels entry driving machine:

as shown in fig. 1 and 2, the dual-channel tunneling machine comprises a cutter head 1 and a shield body, wherein a main drive for driving the cutter head 1 to cut the front stratum is arranged in the shield body, and the main drive is fixedly connected with the cutter head 1. An air cushion pressure regulating cabin 2 is arranged at the front part of the shield body, and an excavation cabin 3 is formed between a front cabin plate of the air cushion pressure regulating cabin 2 and the cutter head 1. A compressed air regulator is arranged in the air cushion ballast 2, and a communicating pipeline is arranged between the air cushion ballast 2 and the excavation cabin 3. When the heading machine operates in a muddy water balance mode, muddy water is stored in the lower parts of the excavation cabin 3 and the air cushion pressure regulating cabin 2, the space above the muddy water is an air cushion formed by compressed air, the pressure of the air cushion on the muddy water at the lower part of the air cushion pressure regulating cabin 2 can be regulated by setting parameters of a compressed air regulator, then the pressure of the muddy water at the lower part of the air cushion pressure regulating cabin 2 is transmitted to the excavation cabin 3 through a communication pipeline, and the effect of indirectly controlling the pressure in the excavation cabin 3 by regulating the pressure of the air cushion pressure regulating cabin 2 is achieved. The arrangement of the air cushion pressure regulating cabin 2 can more sensitively and conveniently regulate the pressure of muddy water in the excavation cabin 3, so that the pressure on the tunnel face 11 in front of the cutter head 1 is more stable, and the ground surface is not easy to collapse or rise.

An atmospheric pressure open space 4 communicated with the open area at the rear part of the shield body is arranged below the air cushion ballast 2, and the atmospheric pressure open space 4 is separated from the air cushion ballast 2 by a partition plate. The normal pressure open space 4 and the air cushion pressure regulating cabin 2 are arranged in a separated mode, so that muddy water in the air cushion pressure regulating cabin 2 does not need to be pumped and discharged when equipment in the normal pressure open space 4 is maintained, and the air cushion pressure regulating cabin is convenient and fast to use. And a spiral conveyor 5 for conveying the muck from the excavation cabin 3 to the rear of the shield body in a soil pressure balance mode is further arranged in the shield body, the spiral conveyor 5 is obliquely arranged towards the rear of the shield body, and the front end of the spiral conveyor is positioned in the normal-pressure open space 4.

The screw conveyor 5 comprises a conveying cylinder 51, a transmission shaft 52 arranged in the conveying cylinder 51, a power device for driving the transmission shaft 52 and a slag discharging screw blade 54, wherein the front end of the slag discharging screw blade 54 can extend into the excavation cabin 3, and the slag discharging screw blade 54 is fixed at the front end of the transmission shaft 52 and driven by the transmission shaft 52 to discharge slag to the rear part of the shield body. Delivery cartridge 51 includes a first cartridge section 511 and a second cartridge section 512 that is fitted to first cartridge section 511. A slag inlet 5111 is formed at the opening at the front end of the first cylinder section 511, a slag outlet 5112 is further arranged behind the first cylinder section 511, a power device is arranged behind the second cylinder section 512, and the transmission shaft 52 is rotationally arranged on the second cylinder section 512. Screw conveyor 5 further comprises a telescopic drive mechanism arranged between first shell ring 511 and second shell ring 512. The telescopic driving mechanism is used for driving the second cylinder section 512 and the transmission shaft 52 to retreat until the front end of the deslagging spiral blade 54 exits the excavation cabin 3.

The front partition plate 41 in the normal-pressure open space 4 is provided with a screw conveyor mounting port 411 for extending a slag discharging screw blade 54 into the excavation chamber 3, the first cylinder section 511 is mounted on the front partition plate 41 through the screw conveyor mounting port 411, specifically, the front end of the first cylinder section 511 is fixedly connected with the front partition plate 41 through a flange, the rear part of the first cylinder section 511 is fixed in the shield body through a pull rod, and the pull rod constitutes the connecting piece. The conveyer gate 412 is arranged at the position of the spiral conveyer mounting port 411, when the conveyer gate 412 is opened, the deslagging spiral blade 54 can extend into the excavation cabin 3 through the spiral conveyer mounting port 411 and convey away the slag soil in the excavation cabin 3, after the deslagging spiral blade 54 is withdrawn from the spiral conveyer mounting port 411, the conveyer gate 412 can be closed, and at the moment, the spiral conveyer 5 is separated from the excavation cabin 3. The arrangement of the conveyor gate 412 can conveniently control the on-off relationship between the spiral conveyor 5 and the excavation cabin 3, and the independence of the normal-pressure open space 4 is not damaged.

In this embodiment, the telescopic driving mechanism is specifically a hydraulic cylinder 56, a fixed end of the hydraulic cylinder 56 is fixedly connected with the outer wall of the first cylindrical section 511, and a telescopic end is fixedly connected with the outer wall of the second cylindrical section 512. When the hydraulic cylinder 56 operates, the telescopic end drives the second cylinder section 512 to retreat backwards, and the second cylinder section 512 drives the slag discharge helical blade 54 in the first cylinder section 511 to retreat to the normal-pressure open space 4. The telescopic design of screw conveyer 5 is convenient for maintain it more, specifically, when needs maintain screw conveyer 5, will arrange sediment helical blade 54 through pneumatic cylinder 56 earlier and withdraw, then close conveyer gate 412, and the front end of screw conveyer 5 is located the open space of ordinary pressure 4 this moment, conveniently overhauls it.

The screw conveyor 5 further includes a reverse screw blade 55 for conveying the earth slag accumulated after passing over the slag hole 5112 back to the slag hole 5112. The reverse spiral vane 55 is disposed at the rear side of the slag hole 5112 and is fixedly connected to the outer circumference of the driving shaft 52, and the slag discharge spiral vane 54 is disposed at the front side of the reverse spiral vane 55. In this embodiment, the power unit is a hydraulic motor 53, and the slagging screw 54 is a belt screw. The hydraulic motor 53 is installed at the rear end of the second cylinder section 512, the transmission shaft 52 extends into the second cylinder section 512 and is fixedly connected with the reverse helical blade 55, the reverse helical blade 55 is connected with the slag discharge helical blade 54, and when the hydraulic motor 53 operates, the transmission shaft 52 drives the slag discharge helical blade 54 to rotate, so that the slag in the slag inlet 5111 is conveyed to the slag outlet 5112. The slag discharge helical blade 54 is a shaftless belt-type helical blade, has larger conveying flow rate for slag soil, and is not easy to block. The arrangement of the reverse spiral blades can effectively prevent the dregs from crossing the slag outlet 5112 and accumulating behind the spiral conveyor 5, so that the spiral conveyor 5 runs more stably and reliably.

The shield is also internally provided with a crushing device 6 for crushing large-particle-size slag conveyed by the screw conveyor 5, the crushing device 6 is positioned on the lower side of the screw conveyor 5 and comprises a dilution box 61 and a jaw crusher 62, the dilution box 61 is arranged right below a slag outlet 5112 and is used for receiving the slag conveyed by the screw conveyor 5, a dilution box slurry inlet pipeline 8 is connected in the dilution box 61, and the dilution box slurry inlet pipeline 8 is used for injecting low-concentration slurry from a ground mud-water separation station into the dilution box 61 so as to dilute the slag in the dilution box 61. The jaw crusher 62 is communicated with the dilution tank 61 and is used for crushing the diluted large-particle-size slag soil. The slag discharge port of the jaw crusher 62 is connected with a crusher slurry discharge pipe 74, and the crusher slurry discharge pipe 74 is used for discharging the diluted and crushed slag. The crushing device 6 is arranged below the screw conveyor 5, so that the space in the shield body is effectively saved.

As shown in fig. 3 and 4, an excavation cabin slurry discharge pipeline 7 for conveying the residue soil from the excavation cabin 3 to the rear of the shield body in a slurry balance mode is further arranged in the shield body, the excavation cabin slurry discharge pipeline 7 penetrates through the normal-pressure open space 4 and is fixedly installed on the front partition plate 41, and a slurry discharge pipe valve 71 for opening or closing the excavation cabin slurry discharge pipeline 7 is arranged on the excavation cabin slurry discharge pipeline 7. The front end opening of the excavation cabin slurry discharge pipeline 7 forms a slurry inlet, and the rear end extends out of the normal pressure open space 4. In this embodiment, the slurry discharge pipeline 7 of the excavation chamber is provided with two paths, and the slurry inlets are respectively located at two sides of the screw conveyor 5.

The heading machine further comprises a muddy water circulating system, and the muddy water circulating system comprises a slurry inlet pipeline, a slurry discharge pump and a muddy water separation station arranged on the ground. The slurry inlet pipeline comprises an excavation cabin slurry inlet pipeline and a dilution box slurry inlet pipeline 8, the excavation cabin slurry inlet pipeline is used for injecting low-concentration slurry from the slurry separation station into the excavation cabin 3 to dilute excavated residue soil, the related branch pipelines are used for flushing slurry inlets of the cutter head 1 and the excavation cabin slurry discharge pipeline 7, and the dilution box slurry inlet pipeline 8 is used for injecting the low-concentration slurry from the slurry separation station into the dilution box 61 to dilute residue soil in the dilution box 61. The slurry discharge pipeline is used for conveying high-concentration slurry in the shield body to the mud-water separation station and comprises an excavation cabin slurry discharge pipeline 7, a crusher slurry discharge pipeline 74 and a shared slurry discharge pipeline 72. The crusher slurry discharge pipe 74 is communicated with the common slurry discharge pipe 72, so that slurry discharged from the crusher slurry discharge pipe enters the common slurry discharge pipe 72 and is discharged to the ground. The arrangement of the shared slurry discharge pipeline 72 saves the inner space of the shield body of the heading machine and reduces the material cost.

The double-channel heading machine is further provided with a mud injection pipeline, one end of the mud injection pipeline is connected with a bentonite tank or a bentonite station, the other end of the mud injection pipeline is divided into two paths, one path of mud injection pipeline is installed on a rear cabin plate of the air cushion ballast 2 and communicated with the air cushion ballast 2, and the other path of mud injection pipeline is installed on a front cabin plate of the air cushion ballast 2 and communicated with the excavation cabin 3.

The double-channel heading machine further comprises a propelling system 9 for propelling the heading machine to advance, and the propelling system 9 is in the prior art of the heading machine and is not described in detail herein.

The operation mode of the double-channel heading machine in the embodiment is as follows:

sludge-water deslagging mode. In this mode, the second cylindrical section 512 of the screw conveyor 5 is retracted, the conveyor gate 412 at the front end of the first cylindrical section 511 is closed, and the slurry discharge pipe valve 71 is opened. The propulsion system 9 pushes the heading machine to heading forwards, the main drive driving cutter head 1 cuts the front stratum at the same time, and cut dregs enter the excavation cabin 3. The excavation cabin slurry inlet pipeline 8 injects low-concentration slurry from the ground slurry separation station into the excavation cabin 3 to dilute the residue soil therein, the diluted residue soil forms high-concentration slurry, and the high-concentration slurry enters the excavation cabin slurry discharge pipeline 7 and is conveyed back to the ground slurry separation station through the slurry discharge pipeline by the slurry discharge pump.

And a deslagging mode of the screw conveyor. In this mode, the conveyor gate 412 at the front end of the screw conveyor 5 is opened, the screw blade is extended into the excavation chamber 3, and the slurry discharge pipe valve 71 is closed. The propulsion system 9 pushes the heading machine to heading forwards, the main drive driving cutter head 1 cuts the front stratum at the same time, and cut dregs enter the excavation cabin 3. Then, the soil in the excavation chamber 3 is transported to the slag hole 5112 through the slag inlet 5111 by the screw blade of the screw conveyor 5, and at the same time, the soil over the slag hole 5112 is transported back to the slag hole 5112 by the reverse screw blade 55, and the soil is discharged from the slag hole 5112 and enters the dilution box 61. The dilution tank slurry inlet line 8 injects low-concentration slurry from the surface mud-water separation station into the dilution tank 61 to dilute the muck therein. The diluted muck enters a jaw crusher 62, the sand with large particle size is crushed by the jaw crusher 62, and then the slurry enters a common slurry discharge pipeline 72 and is conveyed back to a mud-water separation station on the ground by a slurry discharge pump.

And an air pressure indirect control type soil pressure balance operation mode. In this mode, high-concentration bentonite is injected into the air cushion chamber through the mud injection pipeline. The compressed air regulator starts to work, the air cushion cabin is pressurized, bentonite slurry in the air cushion cabin is pressed into the excavation cabin 3 through the communication pipeline, and the bentonite slurry fills cracks of the tunnel face 11 after entering the front of the tunnel face 11, so that the tunnel face 11 and the stratum at the top of the shield body in the continuous tunneling and excavation process are stabilized, and collapse or ground subsidence is prevented. The slag discharge process in this mode is the same as the slag discharge mode of the screw conveyor, and is not described in detail here.

And (3) directly controlling a soil pressure balance operation mode. In the mode, high-concentration mud is directly and continuously injected into the excavation cabin 3 through a mud injection pipeline, the high-concentration mud can fill up stratum gaps of a broken zone, and the stability of a tunnel face 11 during earth pressure balance shield mode excavation is realized; meanwhile, the high-concentration mud can also fill large-scale underground cavities, so that the shield body is prevented from sinking and falling, and the adaptability and the traffic capacity of the shield in various complex stratums are improved. The deslagging process in this mode is the same as the deslagging mode of the screw conveyor, and is not described in detail here.

The utility model discloses specific embodiment 2 of binary channels entry driving machine, the difference with above-mentioned embodiment only lies in, in this embodiment, the shield body is stretched out backward to screw conveyer's rear end, and breaker is in on the trailer of host computer rear side.

The utility model discloses specific embodiment 3 of binary channels entry driving machine, the difference with above-mentioned embodiment only lies in, and the thick liquid pipeline is arranged with the excavation cabin to the breaker and the thick liquid pipeline is separately set up.

The utility model discloses specific embodiment 4 of binary channels entry driving machine, the difference with above-mentioned embodiment only lies in, screw conveyer's transport section of thick bamboo formula structure as an organic whole, and power device sliding assembly is provided with flexible actuating mechanism at the rear of transport section of thick bamboo between transport section of thick bamboo and power device, and flexible actuating mechanism can drive the transmission shaft and retreat in order to drive row's sediment helical blade to deviate from the excavation cabin in carrying the section of thick bamboo.

The utility model discloses specific embodiment 5 of binary channels entry driving machine, the difference with above-mentioned embodiment only lies in, no longer sets up reverse helical blade in the second shell ring, is provided with push pedal and link mechanism, and the reciprocating motion through the push pedal pushes back the slag notch with accumulational dregs in the second shell ring.

The utility model discloses specific embodiment 6 of binary channels entry driving machine, the difference with above-mentioned embodiment only lies in, and the internal supporting seat that is provided with of shield, the rear end of first shell ring pass through supporting seat fixed mounting at the shield internal.

The utility model discloses specific embodiment 7 of binary channels entry driving machine, the difference with above-mentioned embodiment only lies in, and flexible actuating mechanism is electric telescopic handle.

The utility model discloses specific embodiment 8 of binary channels entry driving machine, the difference with above-mentioned embodiment only lies in, and breaker installs in one side of screw conveyer, and screw conveyer's slag notch passes through spout and breaker's broken entry intercommunication.

The utility model discloses two channel entry driving machine's concrete embodiment 9, the difference with above-mentioned embodiment only lies in, and the breaker is roller crusher.

The utility model discloses specific embodiment 10 of binary channels entry driving machine, the difference with above-mentioned embodiment only lies in, arranges sediment helical blade and reverse helical blade everywhere and encircles the periphery of fixing at the transmission shaft.

Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made without inventive effort to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a two-channel heading machine, including blade disc (1) and shield body, shield body front portion is provided with air cushion pressure regulating cabin (2), form excavation cabin (3) between preceding cabin board and blade disc (1) of air cushion pressure regulating cabin (2), two-channel heading machine still includes be used for with excavation cabin (3) in dregs exhaust screw conveyer (5) and excavation cabin slurry discharge pipeline (7), screw conveyer (5) are including delivery cylinder (51), be in transmission shaft (52) of delivery cylinder (51), the power device and the row's sediment helical blade (54) of drive transmission shaft (52), row's sediment helical blade (54) are used for arranging the sediment to the shield body rear portion by transmission shaft (52) drive, its characterized in that, the below of air cushion pressure regulating cabin (2) is provided with the open space of ordinary pressure (4), the open space of ordinary pressure (4) separate with air cushion pressure regulating cabin (2) and set up and the open space of ordinary pressure (4) and the open regional intercommunication at shield body rear portion, a spiral conveyor mounting port (411) for enabling a slag discharge spiral blade (54) to extend into the excavation cabin (3) is formed in a front partition plate (41) of the normal-pressure open space (4), the front end of the spiral conveyor (5) is located in the normal-pressure open space (4), and a conveyor gate (412) for opening and closing the spiral conveyor mounting port (411) is arranged at the spiral conveyor mounting port (411); the slurry discharging pipeline (7) of the excavation cabin penetrates through the normal-pressure open space (4), the front end of the slurry discharging pipeline extends into the excavation cabin (3), and a slurry discharging pipe valve (71) is arranged on the slurry discharging pipeline (7) of the excavation cabin; when the conveyor gate (412) is opened and the slurry discharge pipe valve (71) is closed, the double-channel tunneling machine is in a slag discharge mode of the spiral conveyor, the spiral conveyor (5) discharges the slag in the excavation cabin (3), and when the slurry discharge pipe valve (71) is opened and the conveyor gate (412) is closed, the double-channel tunneling machine is in a slurry slag discharge mode and discharges the slag in the excavation cabin (3) through the slurry discharge pipeline (7) of the excavation cabin.

2. The double-channel heading machine according to claim 1, wherein a slag outlet (5112) and a slag inlet (5111) are arranged on the conveying cylinder (51), the slag inlet is positioned at the front end of the conveying cylinder (51), a crushing device (6) which is communicated with the slag outlet (5112) and is used for crushing slag discharged from the slag outlet (5112) is further arranged in the shield body, the crushing device (6) comprises a dilution box (61) and a crusher, the dilution box (61) is connected with a dilution box slurry inlet pipeline (8) for supplying slurry to the crusher, and the crusher is provided with a crusher slag outlet; the crusher residue discharge port is connected with a crusher slurry discharge pipeline (74), a residue discharge pump is arranged on the crusher slurry discharge pipeline (74), and the residue discharge pump is used for discharging crushed residue soil.

3. The double-channel heading machine according to claim 2, wherein the excavation cabin slurry discharge pipeline (7) comprises a common slurry discharge pipeline (72), and the common slurry discharge pipeline (72) is communicated with the crusher slurry discharge pipeline (74) so that slurry discharged from the crusher slurry discharge pipeline (74) enters the common slurry discharge pipeline (72) and is discharged to the ground.

4. The double-channel tunneling machine according to claim 2, wherein the screw conveyor (5) is installed in the shield body, the conveying drum (51) comprises a first drum section (511) and a second drum section (512) which are arranged along the conveying direction, the slag inlet (5111) is arranged at the front end of the first drum section (511), the slag outlet (5112) is arranged on the first drum section (511), the transmission shaft (52) is rotationally arranged on the second drum section (512), and a telescopic driving mechanism is arranged between the first drum section (511) and the second drum section (512) and used for driving the second drum section (512) and the transmission shaft (52) to retreat until the front end of the slag-removing screw blade (54) exits the excavation chamber (3).

5. The double-channel heading machine according to claim 4, wherein the power unit of the screw conveyor (5) is arranged at the rear end of the conveying cylinder (51), a reverse spiral blade (55) is arranged in the second cylinder section (512) and is positioned at the rear side of the slag outlet (5112) and used for conveying the slag forward, and the slag discharge spiral blade (54) is positioned at the front side of the reverse spiral blade (55).

6. The double-channel heading machine according to claim 4, wherein the front end of the first cylindrical section (511) of the screw conveyor (5) is fixedly connected with the front partition plate (41) of the normal-pressure open space (4), and the rear end of the first cylindrical section (511) is fixed in the shield body through a connecting piece.

7. The double-channel tunneling machine according to claim 4, wherein the telescopic driving mechanism of the screw conveyor (5) is a hydraulic cylinder (56), and two ends of the hydraulic cylinder (56) are fixedly connected with the outer wall of the first cylindrical section (511) and the outer wall of the second cylindrical section (512), respectively.

8. The double-channel heading machine according to claim 5, wherein the front end of the drive shaft (52) of the screw conveyor (5) is fixed to the slag discharge screw (54), and the reverse screw (55) is fixed to the outer periphery of the drive shaft (52).

9. A double pass heading machine according to any one of claims 2 to 8, wherein the crushing device (6) is mounted below the screw conveyor (5).

10. A double channel heading machine according to any one of claims 2 to 8, wherein the crusher of the crushing device (6) is a jaw crusher (62).

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