阅读说明：本技术 一种联络通道掘进设备 (Junctional passage tunneling equipment ) 是由 程永亮 刘学 张瑞临 刘任丰 魏国梁 康思杰 孟祥宾 马灿 余亚根 韩涛 董岩松 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种联络通道掘进设备,包括掘进机体、可转动设于掘进机体上的掘进刀具和用于驱动掘进刀具相对掘进机体转动的转动驱动装置,还包括切割刀具和伸缩驱动装置,切割刀具位于掘进刀具径向外侧,且与掘进刀具沿掘进刀具轴向滑动连接且能够限制绕掘进刀具轴线相对转动,伸缩驱动装置两端分别安装在切割刀具与掘进刀具上以能够推动切割刀具向前伸出以凸出掘进刀具以及向后缩回至与掘进刀具对齐。直接将伸缩驱动装置安装在掘进刀具与切割刀具之间,能够更好的保证切割刀具与掘进刀具之间的扭矩传递,以使得钢筋混凝土管片切除更为方便。(The invention discloses a linkage channel tunneling device which comprises a tunneling machine body, a tunneling cutter rotatably arranged on the tunneling machine body, a rotary driving device used for driving the tunneling cutter to rotate relative to the tunneling machine body, a cutting cutter and a telescopic driving device, wherein the cutting cutter is positioned on the radial outer side of the tunneling cutter, is in sliding connection with the tunneling cutter along the axial direction of the tunneling cutter and can limit relative rotation around the axis of the tunneling cutter, and two ends of the telescopic driving device are respectively arranged on the cutting cutter and the tunneling cutter so as to push the cutting cutter to extend forwards to protrude the tunneling cutter and retract backwards to be aligned with the tunneling cutter. The telescopic driving device is directly installed between the tunneling cutter and the cutting cutter, so that torque transmission between the cutting cutter and the tunneling cutter can be better guaranteed, and the reinforced concrete segment can be cut off more conveniently.)

1. The utility model provides a junctional passage tunnelling equipment, includes tunnelling organism, the rotatable tunnelling cutter of locating on the tunnelling organism with be used for the drive tunnelling cutter is relative tunnelling organism pivoted rotation drive device, its characterized in that still includes cutting tool and flexible drive arrangement, cutting tool is located the radial outside of tunnelling cutter, and with the tunnelling cutter is followed tunnelling cutter axial sliding connects and can restrict and wind tunnelling cutter axis rotates relatively, flexible drive arrangement both ends are installed respectively cutting tool with can promote on the tunnelling cutter cutting tool stretches out forward with the protrusion cutting tool and to retract backward with the tunnelling cutter aligns.

2. The communication channel tunneling apparatus according to claim 1, wherein the cutting tool comprises a rotary cylinder body fitted around the outside of the tunneling tool and a plurality of cutting blades provided at the front end of the rotary cylinder body so as to be able to cut the reinforced concrete segments at the receiving end.

3. The communication channel boring apparatus of claim 2, wherein some of the plurality of cutting knives are outer toothed knives, some of the plurality of cutting knives are inner toothed knives, and some of the plurality of cutting knives are middle toothed knives, the outer toothed knives, the inner toothed knives, and the middle toothed knives being arranged alternately.

4. The connection channel tunneling apparatus according to claim 3, wherein the tunneling cutter comprises an installation cylinder body sleeved outside the tunneling machine body and a cutter head installed at the front end of the installation cylinder body, the rotary cylinder body is sleeved on the installation cylinder body and installed in a matched manner, and the plurality of telescopic driving devices are uniformly distributed along the circumferential direction and are uniformly distributed inside the installation cylinder body.

5. A communication channel tunnelling apparatus as claimed in claim 4, wherein the telescopic drive means includes a plurality of telescopic cylinders arranged side by side and having at least one set of telescopic cylinders mounted in opposite directions.

6. The communication channel boring apparatus of claim 5, wherein the boring cutter further comprises a plurality of covers for covering the sides of the telescopic drive means remote from the mounting cylinder, respectively.

7. The communication channel tunneling apparatus according to claim 6, wherein a sliding groove is provided on the mounting cylinder, the mounting cylinder has a sliding block fitted with the sliding groove to realize a sliding connection, and the end of the telescopic driving device is mounted on the sliding block.

8. The connection channel tunneling apparatus according to any one of claims 4-7, wherein the cutter head comprises a central fishtail cutter, an installation outer ring and a spoke cutter set, the installation outer ring is sleeved outside the central fishtail cutter, a shell cutter is arranged on the front side plate surface of the spoke cutter set, cutters are arranged on the two side edges of the spoke cutter set, and the two ends of the spoke cutter set are respectively installed at the edge of the central fishtail cutter installation disk and the edge of the installation outer ring.

9. The connection channel tunneling equipment according to claim 8, further comprising a panel cutter set between adjacent spoke cutter sets, wherein an intermediate ring is arranged between the mounting outer ring and the central fishtail cutter, two ends of the panel cutter set are respectively mounted at the mounting outer ring and the intermediate ring, a front side plate of the panel cutter set is provided with shell cutters, and two side edges of the panel cutter set are provided with cutters.

10. The communication channel tunneling apparatus according to claim 9, wherein there are three sets of said spoke knife groups, and each of said telescopic driving devices is located right behind each of said spoke knife groups; and the rear side of the cutter head is also provided with a stirring rod which extends in the soil bin along the axial direction.

Technical Field

The invention relates to the technical field of communication channels, in particular to a communication channel tunneling device.

Background

The communication channel is generally arranged between the two tunnels, becomes a channel arranged between the two tunnels, and has the functions of communication, drainage, fire prevention and the like. The construction method adopted by the traditional connection channel construction mainly comprises freezing method construction and grouting reinforcement construction, the construction method firstly needs to reinforce and stop the stratum and then adopts a manual excavation mode, and the defects of complex settlement control, high construction cost, low construction efficiency, high personnel safety risk and the like exist.

Therefore, the prior art has the connection channel shield/pipe-jacking construction method. And (3) propelling the shield tunneling machine/pipe jacking machine in the construction process, and assembling reinforced concrete pipe pieces to finally form the contact passage structure. The existing connecting channel shield/pipe-jacking construction equipment cannot directly break reinforced concrete pipe pieces, and usually special pipe pieces are adopted to increase the construction cost. In addition, when the contact channel shield/jacking pipe breaks the reinforced concrete segment at the receiving end, the reinforced concrete segment of the main tunnel is in reverse arc contact with the cutter head, so that the technology for quickly breaking the reinforced concrete segment is lacked.

In summary, how to effectively solve the problem of inconvenience in cutting reinforced concrete segments is a problem which needs to be solved urgently by those skilled in the art at present.

Disclosure of Invention

In view of the above, the present invention aims to provide a communication tunnel boring device, which can effectively solve the problem of inconvenience in cutting reinforced concrete segments.

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

the utility model provides a junctional passage tunnelling equipment, includes tunnelling organism, the rotatable tunnelling cutter of locating on the tunnelling organism with be used for the drive tunnelling cutter is relative tunnelling organism pivoted rotation drive device still includes cutting tool and flexible drive arrangement, cutting tool is located the radial outside of tunnelling cutter, and with the tunnelling cutter is followed tunnelling cutter endwise slip connects and can restrict and wind tunnelling cutter axis rotates relatively, flexible drive arrangement both ends are installed respectively cutting tool with can promote on the tunnelling cutter the cutting tool stretches out forward with the protrusion tunnelling cutter and retract backward with the tunnelling cutter aligns.

In the connection channel tunneling device, the cutting tool is arranged, the cutting tool can be driven to extend out to cut the reinforced concrete segment at the receiving end, and the cutting tool can be retracted compared with the tunneling tool to form a part of the tunneling tool, so that the segment at the starting end is crushed and broken and the tunneling operation at the later stage is guaranteed. More importantly, the telescopic driving device is directly installed between the tunneling cutter and the cutting cutter so as to drive the cutting cutter to move forward or backward relative to the tunneling cutter better, torque transmission between the cutting cutter and the tunneling cutter can be better guaranteed, the tunneling machine body is prevented from being excessively reformed, cost is effectively reduced, and reinforced concrete segments can be cut conveniently. And the excavation equipment can directly break the reinforced concrete segment at the receiving end, solves the problem that the reinforced concrete segment needs to be specially customized, and ensures that the reinforced concrete segment is more convenient to cut. To sum up, the problem that reinforced concrete segments are inconvenient to cut can be effectively solved by the connecting channel tunneling equipment.

Preferably, the cutting tool comprises a rotary cylinder body sleeved on the outer side of the tunneling tool and a plurality of cutting knives arranged at the front end of the rotary cylinder body and used for cutting reinforced concrete segments at the receiving end.

Preferably, among the plurality of cutting knives, part of the cutting knives are outer toothed knives, part of the cutting knives are inner toothed knives, and part of the cutting knives are middle toothed knives, and the outer toothed knives, the inner toothed knives and the middle toothed knives are arranged alternately.

Preferably, the tunneling cutter comprises a mounting cylinder body arranged outside the tunneling machine body in a sleeved mode and a cutter head arranged at the front end of the mounting cylinder body, the rotary cylinder body is arranged on the mounting cylinder body in a sleeved mode and is installed in a matched mode, the telescopic driving devices are evenly distributed along the circumferential direction, and the telescopic driving devices are evenly distributed on the inner side of the mounting cylinder body.

Preferably, the telescopic driving device comprises a plurality of telescopic cylinders which are arranged in parallel and at least one group of telescopic cylinders with opposite installation directions.

Preferably, the tunneling cutter further comprises a plurality of housings respectively covering one side of the telescopic driving device far away from the installation cylinder.

Preferably, a sliding groove is formed in the installation cylinder body, the installation cylinder body is provided with a sliding block matched with the sliding groove to achieve sliding connection, and the end portion of the telescopic driving device is installed on the sliding block.

Preferably, the blade disc includes central fish tail sword, installation outer loop and spoke knife tackle, the installation outer loop cover is established the central fish tail sword outside, the preceding curb plate face of spoke knife tackle is provided with shell sword, both sides border is provided with the cutter, spoke knife tackle both ends install respectively in central fish tail sword mounting disc border department and installation outer loop department.

Preferably, the spoke knife groups are adjacent to each other, a panel knife group is further included between the spoke knife groups, an intermediate ring is arranged between the mounting outer ring and the central fishtail knife, two ends of the panel knife group are respectively mounted at the mounting outer ring and the intermediate ring, a front side plate of the panel knife group is provided with shell knives, and the edges of two sides of the panel knife group are provided with cutters.

Preferably, three groups of spoke knife groups are provided, and each telescopic driving device is positioned right behind each spoke knife group; and the rear side of the cutter head is also provided with a stirring rod which extends in the soil bin along the axial direction.

Compared with the prior art, the connection channel tunneling equipment provided by the invention has the following technical effects:

firstly, cutting a reinforced concrete segment by a cutting tool, tunneling a soil body by a tunneling tool to respectively cut the reinforced concrete segment and tunnel the soil body, and directly crushing and breaking the segment at the initiating end by the tunneling tool at the initiating end without manually assisting to remove the crushed segment; the reinforced concrete segment is cut at the receiving end through the cutting tool, the reinforced concrete segment at the receiving end does not need to be specially manufactured, and the problem that the reinforced concrete segment in the main tunnel at the receiving end is difficult to rapidly break the reinforced concrete segment due to the fact that the reinforced concrete segment is in reverse arc contact with the cutter head is solved.

Secondly, the telescopic driving device can push the cutting tool to extend forwards to protrude out of the tunneling tool to cut the reinforced concrete segment, and can retract compared with the tunneling tool to form a part of the tunneling tool so as to ensure the segment crushing and breaking at the initial end and the later tunneling operation. The telescopic driving device is directly installed between the tunneling cutter and the cutting cutter so as to drive the cutting cutter to move forward or backward relative to the tunneling cutter better, torque transmission between the cutting cutter and the tunneling cutter can be better guaranteed, excessive reconstruction of a tunneling machine body is avoided, and cost is effectively reduced.

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 cross-sectional structure diagram of a connection channel tunneling device provided in an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of a communication channel tunneling device provided in the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a front end face of the communication channel tunneling apparatus provided in the embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an external toothed cutter according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an internal tooth cutter according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a middle-tooth cutter according to an embodiment of the present invention.

The drawings are numbered as follows:

the device comprises a development machine body 1, a cutter head 2, a rotation driving device 3, a rotary cylinder 4, a telescopic driving device 5, a cutting knife 6, an installation cylinder 7, a sliding chute 8, a soil bin 9 and a housing 10.

A shield body partition plate 11, a front shield 12, a tail shield 13, a front shield rotating part 14, a front shield fixing part 15, a sealing device 16, a central rotating joint 17, a deviation rectifying oil cylinder 18, a screw conveyor 19,

A central fishtail knife 21, a mounting outer ring 22, a spoke knife group 23, a panel knife group 24, a middle ring 25, a stirring rod 26,

A telescopic cylinder 51.

Detailed Description

The embodiment of the invention discloses a connecting channel tunneling device, which effectively solves the problem of inconvenience in cutting reinforced concrete segments.

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 6, fig. 1 is a schematic cross-sectional structure diagram of a connection tunnel boring device according to an embodiment of the present invention; fig. 2 is a schematic cross-sectional structure diagram of a communication channel tunneling device provided in the embodiment of the present invention; fig. 3 is a schematic structural diagram of a front end face of the communication channel tunneling apparatus provided in the embodiment of the present invention; FIG. 4 is a schematic structural diagram of an external toothed cutter according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of an internal tooth cutter according to an embodiment of the present invention; fig. 6 is a schematic structural diagram of a middle-tooth cutter according to an embodiment of the present invention.

In an embodiment, the present embodiment provides a link tunnel boring apparatus, and specifically, the link tunnel boring apparatus includes a boring machine body 1, a boring cutter, a rotary drive device 3, a cutting cutter, and a telescopic drive device 5. It should be noted that, for convenience of description, the front-back direction is used in the context, where the heading direction is the forward direction and the opposite direction is the backward direction.

Wherein entry driving body 1 indicates, be used for bearing the weight of, the most basic structure of fixed each part, entry driving cutter is rotatable installs on entry driving body 1 to when rotating, cut or excavate the front side soil body of direction of tunnelling, in order to form the dregs, then later stage is carried out through the transport means, and then form circular hole in the front side soil body, be called the entry driving hole promptly, in order being as the contact passageway, generally at the tunnelling in-process, contact passageway reinforced concrete section of jurisdiction enters into the contact passageway along entry driving body, in order to form inside support in the contact passageway.

The rotation driving device 3 is used for driving the tunneling cutter to rotate relative to the tunneling machine body 1, wherein the rotation driving device 3 is installed at the tunneling machine body 1, and the driving end is in transmission connection with the tunneling cutter, such as gear transmission and belt transmission, so as to drive the tunneling cutter to rotate for cutting.

Wherein the cutting tool is located radially outside the ripping tool to form an annular slit having an outer diameter not less than the outer diameters of the ripper body and the ripping tool when rotated. The cutting tool is used for forming a cutting seam, and the cutting tool is arranged correspondingly by specifically referring to the structure of the cutting tool in the prior art.

The cutting tool and the tunneling tool are connected in an axial sliding mode along the tunneling tool, so that the cutting tool can slide forwards relative to the tunneling tool to protrude out of the tunneling tool, the reinforced concrete segment is cut on the front side of the tunneling tool, and the reinforced concrete segment on the inner side of the cutting seam is separated from the cutting tool to form a large hole. Correspondingly, the cutting tool can also slide backwards relative to the tunneling tool, so that the cutting tool can be aligned with the tunneling tool to form a larger cutter head, and the crushing and breaking of the segment at the initial end and the later tunneling operation are guaranteed. So that the cutting tool is prevented from moving radially relative to the ripping tool by the sliding connection, but can only move axially relative to one another.

Meanwhile, the cutting tool and the tunneling tool are limited to rotate relatively around the axis of the tunneling tool through a sliding connection or other rotation stopping mechanisms, so that the tunneling tool can transmit torque to the cutting tool, and the cutting tool can be driven to rotate through the rotation driving device 3 to realize cutting. Specifically, the sliding fit can be realized through a sliding rail or a sliding rod, and then the torque is transmitted.

And wherein the flexible drive arrangement 5 both ends are installed respectively on cutting tool and tunnelling cutter to can stretch out forward with the protrusion tunnelling cutter through flexible promotion cutting tool, can stretch out and draw back with the drive cutting tool backward through flexible simultaneously and align with tunnelling cutter, general flexible drive arrangement 5, when extending, promotes cutting tool and stretches out, and when retracting, promotes cutting tool and draws back. Wherein the telescopic driving device is structured like an electric cylinder, a hydraulic cylinder and the like.

In the connection channel tunneling equipment, the cutting tool is arranged, the cutting tool can be driven to extend out to cut the reinforced concrete segment, and the cutting tool can be retracted compared with the tunneling tool to become a part of the tunneling tool so as to ensure the segment crushing and breaking at the initial end and the tunneling operation at the later stage. The telescopic driving device 5 is directly installed between the tunneling cutter and the cutting cutter to drive the cutting cutter to move forward or backward relative to the tunneling cutter better, so that torque transmission between the cutting cutter and the tunneling cutter can be better guaranteed, the tunneling machine body 1 is prevented from being excessively reformed, cost is effectively reduced, and reinforced concrete segments are cut more conveniently. And the excavation equipment can directly break the reinforced concrete segment at the receiving end, solves the problem that the reinforced concrete segment needs to be specially customized, and ensures that the reinforced concrete segment is more convenient to cut. To sum up, the problem that reinforced concrete segments are inconvenient to cut can be effectively solved by the connecting channel tunneling equipment.

Compared with the prior art, the connection channel tunneling equipment provided by the invention has the following technical effects:

firstly, cutting a reinforced concrete segment by a cutting tool, tunneling a soil body by a tunneling tool to respectively cut the reinforced concrete segment and tunnel the soil body, and directly crushing and breaking the segment at the initiating end by the tunneling tool at the initiating end without manually assisting to remove the crushed segment; the reinforced concrete segment is cut at the receiving end through the cutting tool, the reinforced concrete segment at the receiving end does not need to be specially manufactured, and the problem that the reinforced concrete segment in the main tunnel at the receiving end is difficult to rapidly break the reinforced concrete segment due to the fact that the reinforced concrete segment is in reverse arc contact with the cutter head is solved.

Secondly, the telescopic driving device can push the cutting tool to extend forwards to protrude out of the tunneling tool to cut the reinforced concrete segment, and can retract compared with the tunneling tool to form a part of the tunneling tool so as to ensure the segment crushing and breaking at the initial end and the later tunneling operation. The telescopic driving device is directly installed between the tunneling cutter and the cutting cutter so as to drive the cutting cutter to move forward or backward relative to the tunneling cutter better, torque transmission between the cutting cutter and the tunneling cutter can be better guaranteed, excessive reconstruction of a tunneling machine body is avoided, and cost is effectively reduced.

Specifically, for better cutting, the cutting tool preferably includes a rotary cylinder 4 sleeved outside the tunneling tool and a plurality of cutting blades 6 provided at the front end of the rotary cylinder 4. The outer wall of the tunneling cutter is cylindrical, and the outer diameter of the tunneling cutter is approximately equal to the inner diameter of the rotary cylinder 4, so that the inner side surface of the rotary cylinder 4 is arranged close to the outer side wall of the tunneling cutter.

Wherein cutting knife 6, generally well serrated knife, for better formation joint-cutting, in preferred a plurality of cutting knives 6 here, partial cutting knife 6 is outer serrated knife, partial cutting knife 6 is internal tooth sword and partial cutting knife 6 is well serrated knife, and outer serrated knife, internal tooth sword and well serrated knife set up alternately moreover to cut respectively to the both sides cell wall and the tank bottom surface of slot. In particular, the cutting blade 6 is preferably detachably connected to the rotary cylinder 4, for example, by a plug connection, and is preferably further locked by a bolt.

Specifically, in order to facilitate installation of the cutting tool, it is preferable that the tunneling tool includes an installation cylinder 7 sleeved outside the tunneling machine body 1 and a cutter head 2 installed at the front end of the installation cylinder 7, wherein the rotary cylinder 7 is sleeved on the installation cylinder 7 and is installed in a matched manner, such as clearance fit, and a plurality of telescopic driving devices 5 are uniformly distributed along the circumferential direction and are uniformly distributed inside the installation cylinder 7. Specifically, one end of the telescopic driving device 5 can be fixed with the back side of the cutter head 2; and the other end is fixedly connected with the inner side of the rotary cylinder 4 through a connecting block.

In order to facilitate sliding connection, a sliding groove extending in the axial direction may be provided in a portion of the mounting cylinder 7 circumferentially corresponding to the telescopic driving device 5, and the mounting cylinder 7 may have a slider engaged with the sliding groove 8 to realize sliding connection, wherein an end of the telescopic driving device 5 is mounted on the slider to make the slider serve as a connecting block.

Further, in order to reduce the axial installation distance and ensure more uniform force when extending or retracting, the telescopic driving device 5 preferably comprises a plurality of telescopic cylinders 51 which are arranged side by side and at least one group of telescopic cylinders are installed in opposite directions. Specifically, the telescopic cylinders of any one of the telescopic driving devices 5 are sequentially and uniformly distributed along the circumferential direction. So that the extension and retraction are realized, the force transmission characteristics between the rotary cylinder body 4 and the tunneling cutter are the same, the accidental jumping is avoided, and the force transmission is more uniform when the rotary cylinder body is extended or retracted. Specifically, it is preferable that each of the telescopic driving devices 5 includes four telescopic cylinders 51 arranged in parallel, and the four telescopic cylinders 51 are arranged in opposite directions. It should be noted that, the two telescopic cylinders are installed in opposite directions, which means that: of the two telescopic cylinders, the cylinder body of one telescopic cylinder 51 is connected with the tunneling tool, the telescopic rod is connected with the cutting tool, and the cylinder body of the other telescopic cylinder 51 is connected with the cutting tool, and the telescopic rod is connected with the tunneling tool.

Further, in order to better protect the telescopic cylinder 51, it is preferable that the tunneling tool further includes a plurality of housings 10 respectively covering the telescopic driving device 5 on a side away from the installation cylinder 7, and the openings of the housings are connected to the inner wall of the installation cylinder 7 and the rear wall of the cutterhead 2, so as to prevent the muck tunneled by the cutterhead 2 from entering the housings 10 and further entering the telescopic cylinder 51.

Further, in order to facilitate the tunneling of the tunneling cutter, it is preferable that the cutterhead 2 comprises a central fishtail cutter 21, a mounting outer ring 22 and spoke cutter groups 23, and a hollow space between adjacent spoke cutter groups 23 is used for guiding the tunneling muck to the rear side of the cutterhead 2 so as to enter the soil bin 9. Wherein the installation outer ring 22 is sleeved outside the central fishtail knife 21, the front side plate surface of the spoke knife group 23 is provided with a shell knife, the edges of the two sides are provided with cutters, correspondingly, the cutters and/or the shell knives on the installation outer ring 22 are installed, and the two ends of the spoke knife group 23 are respectively installed at the edge of the installation disc of the central fishtail knife 21 and the installation outer ring 22, so that the cutters on the spoke knife group 23 tunnel between the central fishtail knife 21 and the installation outer ring 22. Further, considering that the circumferential distance is larger near the mounting outer ring 22, it is preferable that the bottom plate of the spoke knife group 23 near a section of the mounting outer ring 22 is in a fan shape to provide more seashell knives.

Further, in order to better arrange the cutters on the cutter head 2, it is preferable here that a panel cutter set 24 is further included between adjacent spoke cutter sets 23, an intermediate ring 25 is provided between the mounting outer ring 22 and the central fishtail cutter 21, two ends of the panel cutter set 24 are respectively mounted at the mounting outer ring 22 and the intermediate ring 25, a front side plate of the panel cutter set 24 has shell cutters, and edges at two sides have cutters. Wherein the intermediate ring 25 is preferably located in an intermediate position between the mounting outer ring 22 and the central fishtail 21. For a better tool layout, there are preferably three sets of said spoke knives 23, and correspondingly, each telescopic drive 5 can be located directly behind each of said spoke knives 23.

Furthermore, a rod body extending axially in the soil bin 9 is further arranged on the rear side of the cutter head 2 to serve as a stirring rod 26 for stirring the muck in the soil bin 9 in the process of rotating along with the cutter head 2, which is beneficial to enhancing the fluidity of the muck in the soil bin 9. Generally, a plurality of stirring rods which are uniformly arranged stir the soil bin.

Specifically, the heading machine body can comprise a shield partition 11, a front shield 12, a tail shield 13 and a sealing device 16. Wherein a soil bin 9 is formed between the shield body partition plate 11 and the cutter head. The front shield 22 is divided into a front shield rotating part 14 and a front shield fixing part 15, a deviation rectifying oil cylinder 18 is arranged between the front shield 12 and the tail shield 13, the deviation rectifying oil cylinder 18 is arranged between the front shield 12 and the tail shield 13, and the tunneling direction is controlled by controlling the stroke difference of each deviation rectifying oil cylinder 18. In addition, the front shield 12 is connected with the tail shield 13 in a hinged mode, the requirement of a small-radius turning working condition is met, and the sealing device 16 is arranged at the hinged position to guarantee the sealing effect.

A central rotary joint 17 is further arranged in the development machine body 1, the central rotary joint 17 is mounted on the shield body partition plate 11 and is coaxially mounted with the rotary center of the cutter head, and a hydraulic pipeline, an electrical pipeline and a water-gas pipeline can supply required media to the front of the shield body partition plate 11 through the central rotary joint 17, wherein the required media are as follows: the oil inlet and return pipelines of the telescopic oil cylinder of the telescopic driving device can also realize oil inlet and return through the rotary center joint 17.

The rotary driving device 3 is arranged in the tunneling machine body 1, the rotary driving device 3 is preferably driven by the periphery to provide power for the rotation of the cutter head, so that the internal space of the equipment is increased, and the structure of the rotary part of the tunneling equipment can better bear torque.

The screw conveyor 19 for outputting the muck is fixed in the tunneling machine body 1 at a certain angle, and meanwhile, the screw conveyor 19 is provided with a screw machine gate, and the pressure of the soil bin 9 is adjusted by controlling the gate opening, so that the soil bin 9 balance mode is realized.

Specifically, in order to ensure that the communication channel can better perform tunneling operation, the general tunneling equipment further comprises a reaction force supporting system, a propelling system, a starting sealing assembly, a receiving sealing assembly and a rear matching system.

The counter-force supporting system is positioned on the originating end trolley and the receiving end trolley corresponding to the tunnel portal and comprises a jacking oil cylinder, a supporting frame and a bearing panel matched with the inner wall surface of the reinforced concrete segment of the main tunnel. The supporting frame 8 is horizontally fixed on the trolley, matched with the groove formed in the bearing panel and used for supporting the bearing panel. One end of the jacking oil cylinder is connected with the trolley, and the other end of the jacking oil cylinder drives the bearing panel to complete stretching and retracting actions.

The propulsion system comprises a top ring, a propulsion oil cylinder and an oil cylinder bracket. The top ring is connected with the propulsion oil cylinder and completes jacking and retracting actions along with the propulsion oil cylinder. The oil cylinder support is vertically arranged on the front side of the counter-force supporting system along the tunneling direction, and a plurality of through holes are formed for placing the propulsion oil cylinder.

The originating end sealing assembly and the receiving end sealing assembly respectively comprise an originating tube and a receiving tube which are fixed on reinforced concrete pipe pieces of the main tunnel at the end part of the communication channel, sealing elements such as sealing brushes or curtain cloth and the like on the inner wall of the originating tube, and the sealing brushes are preferably adopted on the inner wall of the originating tube in the embodiment. The starting tube is arranged on the main tunnel wall of the starting side, the outer diameter of the starting tube is larger than the diameter of a communication channel formed after tunneling, and the inner diameter of the starting tube is larger than the outer diameters of the shield body and the segment. The receiving barrel is arranged on the other main tunnel wall, and the receiving barrel can be arranged according to the tunneling direction of the communication channel tunneling equipment and various tunneling parameters and sizes, so that the receiving work can be smoothly finished. The sealing brush on the inner wall of the starting barrel avoids the phenomena of water gushing, sand gushing and the like in the tunneling process.

The back matching system comprises an electrical system, a hydraulic system, a control system, a grouting friction reducing system, a duct piece hoisting system, a duct piece trolley and a steel pipe joint which are arranged on a trolley in a main tunnel at the initiating end of the communication channel. The trolley at the starting end and the trolley at the receiving end are in a modular design, a connecting structure is arranged between the front trolley and the rear trolley, all the trolleys and accessory equipment can be assembled outside, and are pulled to the excavation position of the contact channel by the traction equipment to be directly tunneled, so that the assembly in a tunnel is avoided, and the tunneling efficiency is increased. The duct piece adopts a sectional type duct piece with different upper and lower angles or an integral duct piece. And when receiving, the steel pipe joints are left in the communication channel for permanent support.

The invention provides a construction method of a connecting passage, which comprises the following steps:

a: driving the cutting tool to retract to be flush with the tunneling tool so as to form a cutter head structure with the tunneling tool, and driving the cutter head mechanism to rotate so as to crush the segment at the initial end;

b: driving the tunneling host to tunnel forwards along a preset tunneling route, and forming a support in an excavated channel;

c: when the tunneling cutter is close to the reinforced concrete segment at the receiving end, the telescopic driving device pushes the cutting cutter to extend forwards to protrude out of the tunneling cutter, and the cutting cutter and the tunneling cutter rotate in a coordinated mode to perform annular cutting on the reinforced concrete segment at the receiving end.

Compared with the prior art, the construction method of the connection channel provided by the invention has the following technical effects:

when the tunnel segment is at the initial end, the cutting tool retracts to be flush with the tunneling tool through the telescopic driving device, a larger cutter head is formed by the cutting tool and the tunneling tool, the main tunnel segment at the initial end is directly crushed, the crushed segment does not need to be removed in an auxiliary mode, the soil body is cut in the tunneling process, simultaneously, the slag is synchronously discharged, and the tunnel is formed at one time. When the receiving end is used, the telescopic driving device pushes the cutting tool to extend forwards to protrude out of the tunneling tool, the cutting tool and the tunneling tool rotate in a coordinated mode, and the reinforced concrete segment at the receiving end is cut in an annular mode, so that the problem that the reinforced concrete segment needs to be specially customized is solved, and the reinforced concrete segment can be cut conveniently.

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.