阅读说明：本技术 机头盾体、联络通道施工系统及方法 (Handpiece shield body and contact channel construction system and method ) 是由 刘飞香 程永亮 彭正阳 刘学 郭磊 李向红 刘剑 张瑞临 刘任丰 杨亚飞 陈亮 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种机头盾体,包括环形壳体、固定安装于环形壳体前端的切削组件和前端开口露出在环形壳体前端的冲洗排渣通道,冲洗排渣通道穿设在环形壳体内外壁之间且向后延伸,切削组件转动时能够切削形成大小不小于环形壳体的环形槽体以使得环形壳体能够跟随切削组件进入环形槽体。在该机头盾体中,设置了环形的盾体结构,以在安装联络通道支撑管时,无需对联络通道整体掘进,能够有效地避免出现内部塌方等问题。而且设置了冲洗排渣通道,可以利用内部土体易被冲刷的特点,以无需切削,即可前进,进而使得联络通道支撑管可以紧随其后安装。本发明还公开一种包括上述机头盾体的联络通道施工系统；本发明还公开一种联络通道施工方法。(The invention discloses a machine head shield body which comprises an annular shell, a cutting assembly fixedly arranged at the front end of the annular shell and a flushing slag discharging channel with an opening at the front end exposed out of the front end of the annular shell, wherein the flushing slag discharging channel penetrates between the inner wall and the outer wall of the annular shell and extends backwards, and the cutting assembly can cut into an annular groove body with the size not smaller than that of the annular shell when rotating so that the annular shell can enter the annular groove body along with the cutting assembly. In the machine head shield body, an annular shield body structure is arranged, so that when the connecting channel supporting tube is installed, the connecting channel does not need to be integrally tunneled, and the problems of internal collapse and the like can be effectively avoided. And set up and wash the sediment passageway, can utilize the easy characteristics of being washed and brushed of inside soil body to need not the cutting, can advance, and then make the contact passageway stay tube install immediately thereafter. The invention also discloses a construction system of the connection channel comprising the handpiece shield body; the invention also discloses a construction method of the connecting passage.)

1. The utility model provides a aircraft nose shield body, its characterized in that, including annular housing, fixed mounting in the cutting subassembly and the front end opening of annular housing front end expose the slag removal passageway that washes of annular housing front end, wash the slag removal passageway and wear to establish just extend backward between the annular housing inside and outside wall, can cut when cutting subassembly rotates and form the size and be not less than the annular groove body of annular housing is so that annular housing can follow cutting subassembly gets into annular groove body.

2. The handpiece shield body according to claim 1, wherein the flushing and deslagging channel comprises a flushing channel and a deslagging channel, a plurality of partition areas are uniformly distributed at the front end of the annular shell along the circumferential direction, and each partition area is provided with one or more deslagging ports communicated with the deslagging channel and a plurality of flushing ports communicated with the flushing channel.

3. The handpiece shield body according to claim 2, further comprising a deviation-correcting device and an annular base body coaxially arranged with the annular shell, wherein the front end of the annular base body is connected with the annular shell in an inserting manner, the deviation-correcting device is arranged on one side of the annular shell and located between the inner wall and the outer wall, one end of the deviation-correcting device is connected with the annular base body, and the other end of the deviation-correcting device is connected with the annular shell.

4. The handpiece shield of claim 3, further comprising a flushing and deslagging conduit mounted within the flushing and deslagging channel, the flushing and deslagging conduit extending through a rear removably attached double support tube segment in communication with the muck pumping means and the flushing means of the primary channel at the initiating end.

5. A linkage channel construction system, which comprises the machine head shield body as claimed in claims 1-4, and further comprises a driving device disposed in the main channel of the initiating end and a double-layer supporting pipe joint which abuts against the rear end of the machine head shield body and can transmit torque between each other, the cross section profile of the double-layer supporting pipe joint is equal to the cross section of the machine head shield body in size and shape and is coaxially disposed, the front end of the driving device is provided with a clamping device for clamping the double-layer supporting pipe joint, so that in the clamping state of the clamping device, the rotary driving part of the driving device can drive the double-layer supporting pipe joint to rotate when being started, and the push driving part of the driving device can push the double-layer supporting pipe joint to move forwards when being started.

6. The communication channel construction system of claim 5, further comprising an originating end sealing sleeve, a sealing baffle and a supporting device, wherein the originating end sealing sleeve is sleeved outside the double-layer supporting pipe section, the front end of the originating end sealing sleeve is connected with the originating port of the communication channel, a sealing brush is arranged between the inner side of the originating end sealing sleeve and the outer side of the double-layer supporting pipe section, the sealing baffle is arranged in the originating end main channel and located inside the double-layer supporting pipe section, the sealing brush is arranged between the peripheral edge of the sealing baffle and the side wall of the double-layer supporting pipe section close to the central axis, and the supporting device is provided with a supporting hydraulic cylinder for pushing the sealing baffle forwards to abut on the originating end main channel pipe section.

7. The communication channel construction system as claimed in claim 6, comprising a receiving end sealing cylinder installed in the receiving end main channel and coaxial with the handpiece shield body, wherein the receiving end sealing cylinder is provided with a pressurizer capable of pressurizing the segment at the receiving end main channel.

8. The communication channel construction system of claim 7, further comprising a muck pumping device and a flushing device for installation in the originating main channel, each of the muck pumping device and the flushing device being in communication with a corresponding flushing slagging channel and piping in the handpiece shield body.

9. A construction method of a connecting channel is characterized by comprising the following steps:

driving an annular handpiece shield body which corresponds to the size and shape of the cross section profile of the double-layer support pipe joint to rotate and advance, so that the handpiece shield body cuts and separates the corresponding segment part of the primary channel of the initiating end;

stopping driving the machine head shield body to rotate, driving the machine head shield body to move forward, washing soil on the front side of the machine head shield body through a washing slag discharge port at the front end of the machine head shield body, discharging slag, and enabling the double-layer support pipe joint to move forward along with the machine head shield body;

when the machine head shield body reaches the segment of the receiving end main channel, the washing and deslagging on the front side of the machine head shield body are stopped, and the machine head shield body is driven to rotate, advance and rotate so as to enable the machine head shield body to cut and separate the segment part corresponding to the receiving end main channel.

10. The construction method of the communication channel according to claim 9, wherein before the soil mass at the front side of the machine head shield body is washed and slag is discharged through the washing slag discharge port at the front end of the machine head shield body, the method further comprises the following steps:

and pressurizing and supporting the pipe piece of the receiving end main channel positioned at the receiving end of the communication channel from the receiving end main channel.

Technical Field

The invention relates to the technical field of underground passage construction, in particular to a machine head shield body, an interconnection passage construction system comprising the machine head shield body and an interconnection passage construction method.

Background

The communication channel, namely the emergency channel arranged between the two tunnels, is convenient for underground personnel to directly lead to the other tunnel from one tunnel so as to facilitate quick escape and rescue.

At present, the construction method aiming at the communication channel mainly comprises a mechanical construction method, namely, shield/pipe jacking construction, and the construction method still has the technical defects that: the contact channel construction equipment/pipe jacking machine needs to excavate the soil body in a full section by using a cutter head, the disturbance to the soil body is very large, and the ground settlement is easy to cause; the existing tunnel is easy to be damaged; the equipment occupies a large space, has long initial and receiving time and high cost, and is difficult to popularize in the construction of short-distance contact channels.

Therefore, how to safely and effectively perform tunnel construction while avoiding the above drawbacks to a certain extent still remains a problem to be solved by those skilled in the art.

In summary, how to effectively solve the problem of inconvenient forming of the communication channel is a problem which needs to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, a first object of the present invention is to provide a handpiece shield, which can effectively solve the problem of inconvenient forming of the existing communication channel, and a second object of the present invention is to provide a communication channel construction system comprising the handpiece shield; the third purpose of the invention is to provide a connecting channel construction method.

In order to achieve the first object, the invention provides the following technical scheme:

the utility model provides a aircraft nose shield body, includes annular housing, fixed mounting in the cutting subassembly and the front end opening of annular housing front end expose the slag removal passageway that washes of annular housing front end, wash the slag removal passageway and wear to establish just extend backward between the inside and outside wall of annular housing, can cut when cutting assembly rotates and form the size and be not less than the annular cell body of annular housing is so that annular housing can follow cutting assembly gets into annular cell body.

In this aircraft nose shield body, when using, arrange the aircraft nose shield body in the initial end main channel, and arrange in the place that needs set up the contact passageway, arrange along the contact passageway extending direction who sets for, then outside actuating mechanism direct or indirect drive annular casing rotates and feeds forward, the cutting assembly synchronous rotation of front end this moment, in order to contact with initial end main channel section of jurisdiction in order to cut, and then cut on the initial end section of jurisdiction and form annular groove body, along with the cutting assembly cutting, annular casing follows the forward, the corresponding contact passageway stay tube that follows behind it follows the forward, the moment of torsion and the thrust in the advancing direction that transmit annular casing, also can transmit through the contact passageway stay tube that follows behind it. And after the cutting assembly completely penetrates through the segment of the primary channel at the starting end, the cutting assembly enters a soil body, at the moment, the external driving device does not need to drive the annular shell to rotate, then the flushing and deslagging channel is correspondingly connected with the flushing device and is connected with the muck pumping device for pumping out the muck in a mud form, the external driving device continuously drives the cutting assembly to advance, the annular shell can continuously advance under the flushing and pumping-out of the flushed muck of the deslagging channel, and then the annular shell can continuously advance along with the supporting tube of the subsequent communication channel and enters the communication channel. When the handpiece shield body reaches the duct piece of the receiving end main channel, the annular shell body is continuously driven to rotate at the moment, the corresponding cutting assembly rotates to cut the duct piece on the receiving end main channel, so that the whole body can continuously advance, the annular shell body is completely exposed from the receiving end main channel, the driving can be stopped at the moment, then the contact channel supporting pipe is pushed to penetrate through the whole contact channel, the handpiece shield body can be transported out from the receiving end main channel, and the residual soil body inside the contact channel supporting pipe and the cut and separated duct piece can be transported out at a later period. In the machine head shield body, an annular shield body structure is arranged, so that when the connecting channel supporting tube is installed, the connecting channel does not need to be integrally tunneled, and the problems of internal collapse and the like can be effectively avoided. And set up and wash the sediment passageway, can utilize the easy characteristics of being washed and brushed of inside soil body to need not the cutting, can advance, and then make the contact passageway stay tube install immediately thereafter. In conclusion, the machine head shield body can effectively solve the problem that the existing communication channel is inconvenient to form.

Preferably, wash the slag discharge passageway including washing the passageway and arranging the slag passageway, annular casing front end evenly distributed has a plurality of partition regions along circumference, each partition region is provided with the intercommunication arrange slag passage's one or more slag notch and the intercommunication washes a plurality of mouths of washing of passageway.

Preferably, the device further comprises a deviation correcting device and an annular base body coaxially arranged with the annular shell, the front end of the annular base body is connected with the annular shell in an inserting mode, the deviation correcting device is arranged on one side of the annular shell and located between the inner wall and the outer wall, one end of the deviation correcting device is connected with the annular base body, and the other end of the deviation correcting device is connected with the annular shell.

Preferably, the washing and deslagging device further comprises a washing and deslagging pipeline arranged in the washing and deslagging channel, wherein the washing and deslagging pipeline extends and is communicated with the muck pumping device and the washing device of the primary channel of the initiating end through a double-layer supporting pipe joint detachably connected at the rear part. .

In order to achieve the second object, the present invention further provides a linkage channel construction system, which includes any one of the above-mentioned handpiece shield bodies, further includes a driving device disposed in the originating end main channel, and a double-layer supporting pipe joint abutted to the rear end of the handpiece shield body and capable of transmitting torque therebetween, wherein the cross-sectional profile of the double-layer supporting pipe joint is equal to the cross-sectional shape of the handpiece shield body and is coaxially disposed, the front end of the driving device has a clamping device for clamping the double-layer supporting pipe joint, so that in a clamping state of the clamping device, a rotation driving part of the driving device can drive the double-layer supporting pipe joint to rotate when activated, and a pushing driving part of the driving device can push the double-layer supporting pipe joint to move forward when activated. Because the machine head shield body has the technical effects, the connection channel construction system with the machine head shield body also has corresponding technical effects.

Preferably, still include originating end sealing barrel, sealing baffle and strutting arrangement, originating end sealing barrel set establish the double-deck support tube coupling outside and front end link up with the originating port of liaison passageway, inboard with have the sealing brush between the double-deck support tube coupling outside, sealing baffle is used for setting up in originating end main passageway and lie in double-deck support tube coupling is inboard, sealing baffle border and double-deck support tube coupling is close to and is provided with the sealing brush between the lateral wall of central axis, strutting arrangement has the pneumatic cylinder to promote forward sealing baffle butt is in originating end main passageway pipe piece.

Preferably, the device comprises a receiving end sealing cylinder which is arranged in a receiving end main channel and is coaxial with the machine head shield body, and a pressurizing object capable of pressurizing a segment at the receiving end main channel is arranged in the receiving end sealing cylinder.

Preferably, the machine further comprises a muck pumping device and a flushing device which are used for being installed in the originating end main channel, and the muck pumping device and the flushing device are respectively communicated with the corresponding flushing slag discharging channel and the corresponding pipeline in the machine head shield body.

In order to achieve the third object, the invention further provides a connection channel construction method, which adopts any one of the machine head shields, and specifically comprises the following steps: driving an annular handpiece shield body which corresponds to the size and shape of the cross section profile of the double-layer support pipe joint to rotate and advance, so that the handpiece shield body cuts and separates the corresponding segment part of the primary channel of the initiating end; stopping driving the machine head shield body to rotate, driving the machine head shield body to move forward, washing soil on the front side of the machine head shield body through a washing slag discharge port at the front end of the machine head shield body, discharging slag, and enabling the double-layer support pipe joint to move forward along with the machine head shield body; when the machine head shield body reaches the segment of the receiving end main channel, the washing and deslagging on the front side of the machine head shield body are stopped, and the machine head shield body is driven to rotate, advance and rotate so as to enable the machine head shield body to cut and separate the segment part corresponding to the receiving end main channel. Because the machine head shield body has the technical effects, the construction method of the connection channel with the machine head shield body also has corresponding technical effects.

Preferably, before the soil body on the front side of the machine head shield body is washed and subjected to slag discharge through the washing slag discharge port at the front end of the machine head shield body, the method further comprises the following steps:

and pressurizing and supporting the pipe piece of the receiving end main channel positioned at the receiving end of the communication channel from the receiving end main channel.

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 structural diagram of a communication channel construction system according to an embodiment of the present invention;

FIG. 2 is a schematic view of the shield of the handpiece of FIG. 1 in the direction AA;

FIG. 3 is a schematic view of the structure of FIG. 2 in the BB direction;

FIG. 4 is a schematic structural diagram of the upper part of the handpiece shield in FIG. 1;

fig. 5 is a schematic structural view of the lower portion of the handpiece shield in fig. 1.

The drawings are numbered as follows:

the machine head shield comprises a machine head shield body 1, a cutting assembly 2, an annular shell 3, a washing port 4, a slag discharge port 5, a deviation correcting device 6, a washing slag discharge channel 7, an anti-twisting device 8, an annular base body 9, a driving device 10, a sealing baffle 11, a supporting device 12, an originating end sealing cylinder 13, a receiving end sealing cylinder 14, a sealing brush 15, a double-layer supporting pipe joint 16 and a supporting hydraulic cylinder 17.

Detailed Description

The embodiment of the invention discloses a machine head shield body which can effectively solve the problem that the existing communication channel is inconvenient to form.

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.

Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a communication channel construction system according to an embodiment of the present invention; FIG. 2 is a schematic view of the shield of the handpiece of FIG. 1 in the direction AA; FIG. 3 is a schematic view of the structure of FIG. 2 in the BB direction;

FIG. 4 is a schematic structural diagram of the upper part of the handpiece shield in FIG. 1; fig. 5 is a schematic structural view of the lower portion of the handpiece shield in fig. 1.

In an embodiment, the present embodiment provides a handpiece shield 1, mainly for the erection of a communication channel between two channels. Specifically, the handpiece shield 1 mainly comprises an annular shell 3, a cutting assembly 2 and a flushing and deslagging channel 7.

Wherein the annular housing 3 mainly comprises an inner shell and an outer shell, wherein the outer shell is sleeved outside the inner shell and coaxially arranged therebetween. Wherein the outer wall diameter of annular casing 3, outer shell external diameter, the size is generally equal with contact channel support pipe external diameter, and the inner wall diameter of annular casing 3, inner shell internal diameter promptly, the size is generally equal with contact channel support pipe internal diameter to the cross section profile size shape that makes contact channel support pipe is equal, and when coaxial setting, can follow annular casing 3 and move forward. The communication channel is used for communicating between the originating end main channel and the receiving end main channel, wherein the originating end is the end of the handpiece shield 1 for forming the communication channel, which starts to work, and the receiving end is the end of the handpiece shield 1, which finishes working. The communication channel support tube, i.e. the communication channel support wall, is generally formed by connecting a plurality of double-layer support tube segments 16 one after another.

Wherein cutting assembly 2 fixed mounting can cut when cutting assembly 2 rotates and form annular cell body in 3 front ends of annular casing, annular cell body size not less than annular casing 3 to make annular casing 3 can follow cutting assembly 2 and get into annular cell body, and then the contact passageway stay tube immediately after can also follow annular casing 3 and enter into annular cell body. Wherein the cutting assembly 2, generally comprising a plurality of cutting blades uniformly arranged in the radial direction along the front end of the annular housing 3, can make the length of the cutting blades extending in the radial direction not less than the thickness of one side of the annular housing 3 distributed in the radial direction, i.e. equal to the thickness of the communication channel support tube. The cutting assembly 2 is mainly used for cutting and forming an annular groove body on the receiving end main channel pipe piece and the originating end main channel pipe piece, so the cutting assembly 2 is an assembly capable of cutting reinforced concrete.

The front end opening of the flushing and deslagging channel 7 is exposed at the front end of the annular shell 3, wherein the flushing and deslagging channel 7 is arranged between the inner wall and the outer wall of the annular shell 3 in a penetrating way and extends backwards. It should be noted that the flushing and deslagging channel 7 can be two types of channels, one type of channel is specially used for conveying flushing liquid, the other type of channel is specially used for deslagging, and the flushing and deslagging channel can also be only one type of channel, i.e. deslagging can be performed, and flushing liquid can also be conveyed, for example, flushing liquid and deslagging are performed alternately.

Wherein expose at annular housing 3 front end through washing 7 front end openings of sediment passageway to make the flush fluid can flow at annular housing 3 front end, the flush fluid of high pressure state flows from annular housing 3 front end, can directly impact on the soil body of annular housing 3 front side, has the scouring effect to the soil pit, so that earth mixes the flush fluid on the soil body, forms mud. Then a suction pump is connected at the rear end of the flushing and deslagging channel 7 to pump out formed mud through the front end opening of the flushing and deslagging channel 7 so as to reduce mud in front of the annular shell 3, so that the annular shell 3 can be pushed to advance.

In this aircraft nose shield body 1, when using, arrange aircraft nose shield body 1 in the originating main channel, and arrange in the place that needs set up the contact passageway, arrange along the contact passageway extending direction who sets for, then outside actuating mechanism directly or indirect drive annular casing 3 rotates and feeds forward, the cutting subassembly 2 synchronous rotation of front end this moment, in order to contact with originating main channel section of jurisdiction and cut in order to carry out the cutting, and then the cutting forms annular cell body on the originating section of jurisdiction, along with cutting subassembly 2 cuts, annular casing 3 follows the forward, the corresponding contact passageway stay tube that follows behind it follows the forward, the moment of torsion and the thrust in the advancing direction of transmitting annular casing 3 also can transmit the stay tube through the contact passageway that follows behind it. And after cutting assembly 2 completely runs through the segment of the primary channel of the initiating terminal, the cutting assembly enters the soil body, at the moment, the external driving device does not need to drive the annular shell 3 to rotate, then the flushing and deslagging channel 7 is correspondingly connected with the flushing device and connected with the muck pumping device for pumping out the muck in the form of slurry, the external driving device continuously drives the cutting assembly 2 to advance, the annular shell 3 can continuously advance under the flushing and pumping-out of the flushed muck of the deslagging channel 7, and then the annular shell further continues to advance along with the supporting tube of the subsequent communication channel and enters the communication channel. When the handpiece shield body 1 reaches the duct piece of the receiving end main channel, the annular shell 3 is continuously driven to rotate at the moment, the corresponding cutting assembly 2 rotates to cut the duct piece on the receiving end main channel, so that the whole body can continuously advance, the annular shell 3 is completely exposed from the receiving end main channel, the driving can be stopped at the moment, then the contact channel supporting pipe is pushed to penetrate through the whole contact channel, the handpiece shield body 1 can be transported out from the receiving end main channel, and the residual soil body in the contact channel supporting pipe and the duct piece which is cut and separated can be transported out at a later stage. In the machine head shield body 1, an annular shield body structure is arranged, so that when the connecting channel supporting tube is installed, the connecting channel does not need to be integrally tunneled, and the problems of internal collapse and the like can be effectively avoided. And set up and wash slag discharging channel 7, can utilize the easy characteristics washed by the inside soil body to need not the cutting, can advance, and then make the contact passageway stay tube install immediately thereafter. In conclusion, the machine head shield body can effectively solve the problem that the existing communication channel is inconvenient to form.

Further, it is preferred that the flushing and deslagging channel 7 comprises a flushing channel and a deslagging channel, i.e. the flushing channel and the deslagging channel are respectively specially arranged, wherein the flushing channel is used for discharging flushing liquid, and the deslagging channel is used for discharging dregs, therefore, the cross section of the deslagging channel is preferably larger than that of the flushing channel, and the number of the flushing channels can be larger than that of the deslagging channels, especially on the front side of the annular shell, the flushing ports 4 are more than the deslagging ports 5, so that the distribution of the flushing ports 4 is more dense, thereby better flushing is realized. Specifically, the distribution mode can be that 3 front ends of annular casing have a plurality of partition regions along circumference evenly distributed, and each partition region is provided with one or more row cinder notch 5 and the intercommunication of intercommunication sediment passageway and washes a plurality of mouths 4 that wash of passageway to make, wash mouth 4 and distribute more densely, do benefit to and wash. It should be noted that one flushing channel may correspond to one flushing port 4, and may also correspond to a plurality of flushing ports 4, and one slag discharging channel may correspond to one slag discharging port 5, and may also correspond to a plurality of slag discharging ports 5, where one slag discharging channel corresponds to one slag discharging port, 5, so as to avoid the occurrence of internal blockage. Cutting components are arranged at the boundary between the separation areas, and rib plates can also be arranged to separate. It should be noted that the flushing port 4 may be directly towards the front side, or may be inclined forwards, preferably inclined forwards, to better flush the soil body gradually. It should be noted that, when the flushing slag discharge cannot advance, the rear-side rotation driving device may be made to drive the annular housing 3 to rotate for a short time or a small amount, so that the cutting may be performed, and then the flushing may be performed.

Further, in order to avoid that the handpiece shield body 1 can realize a certain inclined deflection, the preferred still includes deviation correcting device 6 and the annular base member 9 that sets up with annular housing 3 coaxial here, wherein annular base member 9 also can be called tail shield, and the front end of annular base member 9 is connected with annular housing 3 grafting, wherein deviation correcting device 6 sets up in annular housing 3 one side and is located between the inside and outside wall, and deviation correcting device 6 one end is connected with annular base member 9, and the other end is connected with annular housing 3 to adjust the contained angle between annular housing 3 and the annular base member 9, so that annular housing 3 inclines to set up, in order to revise.

Furthermore, the device also comprises a flushing slag discharging pipeline arranged in the flushing slag discharging channel 7, wherein the flushing slag discharging pipeline extends and is communicated with a slag pumping device and a flushing device of the primary channel at the starting end through a double-layer supporting pipe joint detachably connected at the rear part. The flushing and deslagging pipeline is divided into a plurality of pipeline sections which are sequentially detachably connected, so that when the flushing and deslagging pipeline is used, the pipeline sections with corresponding quantity are installed according to the tunneling depth of the machine head shield body 1, the machine head shield body 1 can be fully fed, flushing liquid in the main channel of the initiating end can be conveyed to the position of the machine head shield body 1, and muck at the position of the machine head shield body 1 can be led out of the main channel of the initiating end to be discharged. When the deviation correcting device 6 is arranged, the deviation correcting device 6 generally adopts a telescopic oil cylinder, so that an oil pipeline is required to supply high-pressure oil for the telescopic oil cylinder, and an oil pump is generally arranged on the starting end trolley, so that the oil pipeline is required to be connected between the deviation correcting device 6 and the oil pump, and correspondingly, the oil pipeline can also be divided into a plurality of pipeline sections which are sequentially detachably connected.

And an anti-twist device 8 can be further arranged, wherein the anti-twist device 8 is arranged between the inner wall and the outer wall of the two symmetrical sides of the double-layer annular shell 3 and is used for preventing the deviation-rectifying oil cylinder 6 from being stressed and transmitting torque backwards when the annular tunnel face is excavated in the middle of the machine head shield body 1.

Based on the handpiece shield body 1 provided in the above embodiment, the present invention further provides a communication channel construction system, which comprises any one of the handpiece shield bodies 1 in the above embodiments, further comprising a driving device 10 arranged in the primary channel of the initiating terminal, and a double-layer supporting pipe joint 16 which is abutted against the rear end of the handpiece shield body 1 and can transmit torque between each other, wherein the cross-sectional profile of the double-layer supporting pipe joint 16 is equal to the cross-sectional size and shape of the handpiece shield body 1 and is coaxially arranged, which means approximately coaxially arranged, when the annular base body 9 and the deviation rectifying device 6 are present, the annular base body 9 and the double-layer supporting pipe joint 16 are coaxially arranged, and the handpiece shield body 1 is also substantially coaxially arranged, and the deviation range is generally not more than 5 degrees. The front end of the driving device 10 is provided with a clamping device for clamping the double-layer supporting pipe joint 16, so that in a clamping state of the clamping device, when the rotary driving part of the driving device 10 is started, the rotary driving part of the driving device 10 can drive the double-layer supporting pipe joint 16 to rotate, and further can drive the annular shell 3 to rotate, when the push driving part of the driving device 10 is started, the double-layer supporting pipe joint 16 can be pushed to move forward to finish feeding, as described above, when the segment is cut, the rotary driving part and the push driving part are both started, at this time, the corresponding flushing slag discharge pipeline, the hydraulic pipeline and the like can be detached to realize segment cutting, and when the cutting is finished, the soil body needs to be further fed, at this time, the flushing slag discharge pipeline, the hydraulic pipeline and the like are connected, and then only the push driving part can be started without starting the rotary driving part to realize flushing feeding, if double-deck support tube coupling 16 length is not enough this moment, then need connect corresponding double-deck support tube coupling 16, and when contacting the receiving terminal main passage section of jurisdiction, at this moment, can remove corresponding washing slag discharge pipeline and hydraulic line etc. to avoid interfering aircraft nose shield 1 and rotate, then rotate the drive division and all start with the promotion drive division, in order to realize the section of jurisdiction excision. Because the machine head shield body in the above embodiment is adopted in the communication channel construction system, please refer to the above embodiment for the beneficial effect of the communication channel construction system.

It should be noted that, the clamping device generally includes a plurality of pressing arms, generally hydraulic telescopic arms, disposed around the double-layer supporting pipe section 16 to push the pressing plates to move toward the center to achieve clamping, so as to achieve relative fixation between the clamping device and the double-layer supporting pipe section 16 or the handpiece shield 1, and the rotation driving portion may be used to drive the clamping device to rotate, and the pushing driving portion may be used to drive the clamping device to advance.

Further, in order to avoid the separation of the segments cut and separated in the primary channel of the initiating terminal and the overflow of slurry formed during the cutting process of the cutting assembly, it is preferable that the primary terminal sealing cylinder 13, the sealing baffle plate 11 and the supporting device 12 are further included, wherein the primary terminal sealing cylinder 13 is sleeved outside the double-layer supporting pipe joint 16 and the front end is connected with the initiating port of the communicating channel, a sealing brush 15 is arranged between the inner side and the outer side of the double-layer supporting pipe joint 16, wherein the sealing baffle plate 11 is arranged in the primary channel of the initiating terminal and positioned inside the double-layer supporting pipe joint 16, a sealing brush 15 is arranged between the peripheral edge of the sealing baffle plate 11 and the side wall of the double-layer supporting pipe joint 16 close to the central axis, and the supporting device 12 is provided with a supporting hydraulic cylinder 17 for pushing the sealing baffle plate 11 forward to abut on the segments of the primary channel of the initiating terminal.

Furthermore, a receiving end sealing cylinder 14 which is arranged in the receiving end main channel and is coaxial with the handpiece shield 1 can be further included. Furthermore, a pressure substance, such as a high-pressure fluid material, or a hydraulic pushing device capable of pressurizing the segment at the receiving end main channel can be provided in the receiving end sealing cylinder 14, so that the segment at the corresponding position of the receiving end main channel is supported sufficiently at the inner side, and the segment deviation in the receiving end main channel caused by pushing of the machine head shield 1 is avoided.

Further, correspondingly, the flushing liquid is convenient to supply, and the slag is convenient to discharge. Preferably, the machine further comprises a muck pumping device and a flushing device which are arranged in the main channel of the initiating end, wherein the muck pumping device and the flushing device are respectively communicated with the corresponding flushing slag discharging channel in the shield body of the machine head. Namely, the inlet end of the muck pumping device is communicated with the slag discharge channel and the pipeline in the flushing slag discharge channel, and the water outlet of the flushing device is communicated with the flushing channel and the pipeline of the flushing slag discharge channel.

Based on the handpiece shield body provided in the above embodiment, the invention also provides a connection channel construction method, which can adopt any one of the handpiece shield bodies in the above embodiments, and specifically the connection channel construction method comprises the following steps:

step 100: the rotation and the forward feed of the annular handpiece shield 1, corresponding to the size and shape of the cross-section profile of the double-layer support tube segment 16, are actuated so that the handpiece shield 1 cuts and separates the segment portions corresponding to the primary channels of the origin.

The machine head shield body 1 which is annular and corresponds to the cross section outline of the double-layer supporting pipe section 16 in size and shape is selected to form an annular groove body with the size being the same as that of the double-layer supporting pipe section 16, so that the double-layer supporting pipe section 16 can enter the annular groove body, and the size of the double-layer supporting pipe section 16 is matched with that of the annular groove body to serve as a supporting pipe of the communication channel.

Then the handpiece shield body 1 is directly or indirectly driven by an external driving mechanism to rotate and move forwards so as to rotate through the handpiece shield body 1, so that the cutting assembly 2 at the front end of the handpiece shield body 1 forms an annular cutting groove, and along with feeding, the segment positioned on the inner side of the annular handpiece shield body 1 is completely separated from the segment positioned on the outer side of the annular handpiece shield body 1, and at the moment, the segment does not need to be cut.

Step 200: stopping driving the machine head shield body 1 rotates, drives the machine head shield body 1 to move forward, and passes through the flushing deslagging port at the front end of the machine head shield body 1 is right the soil body at the front side of the machine head shield body 1 is flushed and deslagging is carried out, and the double-layer supporting pipe joint 16 is made to follow the machine head shield body 1 to move forward.

After the pipe slice is cut, the soil body is arranged at the front end of the machine head shield body 1, the machine head shield body 1 does not need to be driven to rotate, the soil body is washed through the washing slag discharging port at the front end of the machine head shield body 1 to form slag mud, the slag mud is discharged through the slag discharging port 5, the soil body on the front side of the machine head shield body 1 is taken away, and the machine head shield body 1 can be continuously pushed to move forwards to complete feeding. In the feeding process of the machine head shield body 1, the double-layer supporting pipe joint 16 can advance along with the machine head shield body 1, and the double-layer supporting pipe joint 16 and the machine head shield body 1 can be fixedly connected with each other so as to transmit torque and thrust in the advancing direction. And the adjacent double-layer supporting pipe sections 16 are subject to the condition of being capable of transmitting torque. The double-layer supporting pipe sections 16 and the handpiece shield body 1 and the adjacent double-layer supporting pipe sections 16 can be connected by bolts extending radially and axially.

Step 300: when the machine head shield body 1 reaches the segment of the main channel of the receiving end, the washing and deslagging on the front side of the machine head shield body 1 are stopped, and the machine head shield body 1 is driven to rotate, advance and rotate so that the machine head shield body 1 can cut and separate the segment part corresponding to the main channel of the receiving end.

After the tunneling of the soil body is completed by the machine head shield body 1, the cutting assembly 2 at the front end of the machine head shield body 1 can touch the segment corresponding to the main channel of the receiving end, and the torque can be transmitted to the machine head shield body 1 through external force or through the double-layer supporting pipe joint 16 at the moment so as to push the machine head shield body 1 to rotate, and meanwhile, the machine head shield body 1 is driven to feed so as to realize the cutting of the segment of the main channel of the receiving end until the cutting is completed. Because the machine head shield body in the embodiment is adopted in the connection channel construction method, the beneficial effects of the connection channel construction method refer to the embodiment.

Further, before the soil body at the front side of the machine head shield body 1 is washed and the slag is discharged through the washing slag discharge port at the front end of the machine head shield body 1, the method can further comprise the following steps: and pressurizing and supporting the pipe piece of the receiving end main channel positioned at the receiving end of the communication channel from the receiving end main channel. Such as by high pressure soil, or by support plates.

Further, before the circular machine head shield body 1 corresponding to the cross section contour size and shape of the double-layer supporting pipe section 16 is driven to rotate and advance, or before the soil body on the front side of the machine head shield body 1 is washed and subjected to slag discharge through a washing slag discharge port at the front end of the machine head shield body 1, the method may further include the following steps: and (3) pressurizing and supporting the primary channel pipe piece at the initiating end, such as supporting by hydraulic equipment or a supporting plate body or high-pressure sludge.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.