CN212359762U

CN212359762U - High-speed intelligent shield constructs machine

Info

Publication number: CN212359762U
Application number: CN201922503404.3U
Authority: CN
Inventors: 陈云桥
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-01-15
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a high-speed intelligent shield machine, which consists of a shield device (2) and a sand stone conveying device (3), wherein the shield device (2) consists of a shield cutter head (6) and a spiral sand stone flow diverter (5) which is arranged in front of the shield machine (1); the sand conveying device (3) consists of two or more conveying treatment bins (8), is positioned behind the shield device (2), and is fixedly connected with the shield device (2) through a steering connector (7); the conveying treatment bin (8) comprises a cylindrical cabin, a conveying pipeline (10) is installed in the cabin, a sand accelerated flow diverter (11) is arranged in the conveying pipeline (10), and the conveying pipelines (10) in the cabins are flexibly connected through threaded pipes (12); the shield machine has the advantages of high shield speed, high working efficiency and sand and stone discharge efficiency and strong adaptability, and can be used for open type and semi-open type tunnel shield operation and tunnel full-section shield.

Description

High-speed intelligent shield constructs machine

Technical Field

The invention relates to a shield machine, in particular to a shield machine which can not only carry out tunnel shield operation, but also carry out rapid excavation on a river channel and a ditch, and carry out comprehensive operations of rapid sand taking, channel excavation, island construction and the like on the bottom of a river and sea.

Background

In recent years, with the pace of infrastructure construction in China being accelerated, the full-face rock shield machine is widely used in large-scale engineering construction of high-speed railways, urban subways, mining and the like by virtue of the advantages of environmental protection, high automation degree, strong geological adaptability and the like. Compared with the initial manual drilling and blasting method, the shield method has the advantages that the mechanization degree, the labor productivity and the safety are improved to a great extent. In the construction process of the full-face rock shield machine, a hobbing cutter arranged on a cutterhead is driven to rotate by the rotation of the foremost cutterhead of the equipment to crush rocks. Because the rock has high hardness and high strength, the geological conditions are also complicated changeable, and full face rock shield constructs quick-witted hobbing cutter work under the abominable operating mode of strong extrusion, high wearing and tearing, strong impact simultaneously, these all make full face rock shield construct quick-witted hobbing cutter become the spare part that the shield constructs the easy damage of in-process. The abrasion of the hobbing cutter of the full-face rock shield machine has influences on the efficiency, the speed, the cost and the like of TBM construction to different degrees.

In the shield process, the cutter head is one of the main parts of the full-face rock shield machine, has the functions of shield excavation and supporting the tunnel face, and is an installation carrier of all rock breaking tools. The load borne by the cutter head is a typical random load, and bears large torque, large thrust and random sudden impact load, and under the action of the random load, the vibration of the cutter head is expressed as random torsional vibration and transverse vibration of the forced elastic body. Therefore, the working condition of the cutter head is extremely bad, the stress condition is very complex, and the reasonable design of the cutter head plays an important role in improving the shield speed, the service life of the cutter head, the service life of the cutter and the service life of a large bearing of the cutter head, reducing the excavation cost and the like. The excavation environment is severe, and sometimes the phenomena of immovable excavation and even blocking of the cutter head caused by the extra hard rock stratum in front are frequent, so that the shield efficiency and the shield reliability of the cutter head are influenced, and the problem of immovable excavation and even blocking of the cutter head in the shield process is solved.

The existing rapid shield machine comprises a propelling crawler wheel, a shield cutter head, a spiral sandstone diverter, a winch sandstone shovel and a sandstone conveyor belt, wherein the shield cutter head is a hollow conical shell, the top end of the shield cutter head is provided with an opening, and a plurality of longitudinally arranged excavating tooth claws are symmetrically arranged on the side wall of the shield cutter head; the spiral sandstone flow diverter is coaxially arranged in the conical shell, and the shield cone at the top end extends out of the opening at the top end of the conical shell; when the spiral gravel drainage device is used, the shield cone drills a positioning hole in a rock wall, the hole is gradually enlarged by the digging tooth claw on the shield cutter head, and gravel crushed aggregates are further discharged out of the conical shell of the shield cutter head by the spiral gravel drainage device; capstan winch grit shovel and grit conveyer belt convey away the grit of discharge, realize the quick shield in tunnel. However, the conventional rapid shield machine has low working efficiency under severe working conditions of strong extrusion, high abrasion and strong impact, has poor adaptability to various construction operations, has poor flexibility, and affects the safety and the engineering progress of tunnel operation; meanwhile, the technical scheme has large advancing resistance, so that the defects of low shield efficiency, low shield speed, high energy consumption, low adaptability to geological conditions and low degree are all problems to be solved urgently.

Disclosure of Invention

The invention aims to overcome the defects of the existing tunnel shield machine and designs the high-speed shield machine which has the advantages of high shield speed, high working efficiency and safe construction and can discharge sand and stone efficiently.

In order to realize the purpose of the invention, the following technical scheme is proposed:

a high-speed intelligent shield machine is composed of a shield device 2 and a sand stone conveying device 3, wherein the shield device 2 is composed of a shield cutter head 6 and a spiral sand stone flow diverter 5 and is erected in front of the shield machine 1; the sand conveying device 3 consists of two or more than two conveying treatment bins 8, is positioned behind the shield device 2, and is fixedly connected with the shield device 2 through a steering connector 7; the conveying treatment bin 8 comprises a cylindrical cabin, conveying pipelines 10 are installed in the cabin, sand accelerated flow diverters 11 are arranged in the conveying pipelines 10, and the conveying pipelines 10 in each cabin are flexibly connected through threaded pipes 12; the conveying treatment bin 8 adopts a crawler-type structure, and the whole shield machine is supported by a propelling crawler wheel 9; during the shield constructs, erect shield structure device 2 in the place ahead of shield structure machine 1 and rotate at a high speed, utilize crawler-type structure to exert the shield structure pressure to the grit shield structure device 2, through the grit in pipeline 10 with higher speed the effect of drainage ware 11, further with the grit crushed aggregates discharge shield structure machine 1 with higher speed outside, accomplish the shield and construct the operation.

The main body of the shield cutter head 6 is a conical shell 15 with an opening at the top end, and a plurality of strip-shaped digging tooth claws 16 are arranged on the side wall of the conical shell 15 and are longitudinally and symmetrically arranged; the excavating tooth claw 16 is of an arc-shaped strip structure, the upper edge of the excavating tooth claw is provided with teeth or a hob, the lower edge of the excavating tooth claw is welded and fixed on the side wall of the conical shell 15, an opening is cut at the welding position of the side wall of the conical shell, each excavating tooth claw 16 and the side wall of the conical shell 15 jointly form a sand and stone outlet 17, and sand and stone cut by the excavating tooth claw 16 is discharged into the conical shell of the shield cutter head 6.

The spiral sandstone drainage device 5 is a rotary conical structure with blades, the center of the rotary conical structure is provided with a driving shaft 13, spiral blades 14 are fixed on the driving shaft 13, and the front end of the driving shaft 13 forms a shield cone 4; the spiral sandstone diverter 5 is positioned in the conical shell of the shield cutter head 6 and is coaxial with the shield cutter head 6, and the shield cone 4 extends out of the top opening of the conical shell 15; when the shield machine is used for shielding, the shield cone 4 is positioned at the foremost end of the shield machine 1.

The conveying processing bins 8 are sequentially and longitudinally arranged, each conveying processing bin 8 is supported by a propelling crawler wheel 9, a plurality of conveying pipelines 10 are connected in each conveying processing bin 8, a sand accelerating drainage device 11 is arranged in each conveying pipeline 10, and the conveying pipelines 10 are flexibly connected through threaded pipes 12.

The digging tooth claw 16 is a chromium carbide composite wear-resisting plate, and peripheral racks or hobs and the shield cone 4 are hard alloy blocks with high wear resistance and long service life.

When the shield machine 1 is used as a full-section shield machine, the diameter of the bottom of a conical shell of a shield cutter head 6 and the diameter of a cylindrical cabin of the conveying processing bin 8 are enlarged according to the diameter of a tunnel to form a surrounding shell formed by supporting segments as a shield; and (4) arranging lining, backfilling and grouting equipment to realize the circulation of the working procedures of excavation, mucking, lining, backfilling and grouting of the tunnel shield machine, and performing shield type operation.

The shield machine has the advantages that:

1. the shield machine has the advantages of high shield speed, high working efficiency and sand discharging efficiency, strong adaptability, and capability of performing open-type and semi-open-type tunnel shield operation and full-section tunnel shield;

2. the construction is safe, and the construction operation can be effectively carried out under the protection of the shield;

3. the tunneling condition is good, the excavated surface is smooth and flat, no excess excavation is performed, and no disturbance is caused to surrounding rocks basically;

4. the host structure and the system equipment are convenient to move and can be arranged automatically, the construction requirements in the tunnel are fully met, the change of the lithology of the tunnel wall can be observed directly when the shield is constructed, and the construction safety is facilitated.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a high-speed shield tunneling machine according to the present invention;

FIG. 2 shows a cutter head structure diagram of the shield machine;

FIG. 3 shows a spiral flow diverter configuration;

fig. 4 shows an exploded view of the sand conveyor.

Wherein:

the shield tunneling machine comprises a shield tunneling machine 1, a shield tunneling device 2, a sand conveying device 3, a shield cone 4, a spiral sand flow diverter 5, a shield tunneling cutter head 6, a steering connector 7, a conveying treatment bin 8, a propelling crawler wheel 9, a conveying pipeline 10, a sand acceleration flow diverter 11, a threaded pipe 12, a driving shaft 13, a spiral blade 14, a conical shell 15, an excavating tooth claw 16 and a sand discharge port 17.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic diagram of the overall structure of a high-speed shield tunneling machine according to the present invention; as shown in the figure, the shield machine 1 consists of a shield device 2 and a sand conveying device 3, the shield device 2 is erected in front of the shield machine 1, the sand conveying device 3 is arranged behind the shield device 2, and the shield device 2 and the sand conveying device 3 are fixedly connected through a steering connector 7; the sand conveying device 3 is composed of two or more than two conveying treatment bins 8, each conveying treatment bin 8 comprises a cylindrical cabin, a conveying pipeline 10 is installed in each cabin, sand accelerating flow diverters 11 are arranged in the conveying pipelines 10, and the conveying pipelines 10 in each cabin are flexibly connected through threaded pipes 12; the whole conveying treatment bin 8 adopts a crawler-type structure, the whole shield machine is supported by the propelling crawler wheels 9 and serves as a self-propelled shield machine, and the shield machine is flexible and convenient to deploy when entering a site; when the shield is used, the crawler-type structure is utilized to apply pressure, so that the whole shield can be conveniently controlled to work.

The during operation erects the shield structure device 2 in the place ahead of shield structure machine 1 and rotates at a high speed, just drills into the grit of limit cutting lateral wall, and the grit that cuts down impels into the conical shell of shield structure device 2, discharges the pipeline 10 of conveying treatment storehouse 8 to the rear, and the grit through pipeline 10 in accelerates the effect of drainage ware 11, further with the grit crushed aggregates discharge shield structure machine 1 outward with higher speed, the two cooperation conveys away discharged grit, accomplishes the shield structure operation.

Fig. 2 and 3 are schematic diagrams of a shield device of the shield tunneling machine, wherein fig. 2 shows a cutter head structure, the main body of a shield tunneling cutter head 6 is a conical shell 15 with an opening at the top end, a plurality of strip-shaped excavating tooth claws 16 are arranged on the side wall of the conical shell 15 and are longitudinally and symmetrically arranged, the excavating tooth claws 16 are arc-shaped strip structures, the upper edge of each excavating tooth claw is provided with a tooth or a hob, the lower edge of each excavating tooth claw 16 is welded and fixed on the conical wall, an opening is cut on the side wall of the conical shell, each excavating tooth claw 16 and the side wall of the conical shell 15 form a sand outlet 17 together, and sand cut by the excavating tooth claws 4 is discharged into the conical;

fig. 3 shows a spiral sandstone diverter structure, the spiral sandstone diverter 5 is a rotary cylindrical structure with blades, the center is a driving shaft 13, spiral blades 14 are fixed on the driving shaft 13, the front end of the driving shaft 13 forms a shield cone 4, the spiral sandstone diverter 5 is positioned in the conical shell of the shield cutter head 2 and is coaxial with the shield cutter head 2, and the shield cone 4 extends out of the top opening of the conical shell 15; when the shield machine is used for shielding, the shield cone 4 is positioned at the foremost end of the shield machine 1.

Figure 4 shows a sand conveyor. Sandstone delivery device 3 and shield structure device 2 use to turn to connector 7 fixed connection, sandstone delivery device 3 comprises a plurality of conveying processing storehouse 8 longitudinal arrangement in proper order, and every conveying processing storehouse 8 is supported by impelling athey wheel 9, and conveying processing storehouse 8 in-connection has many pipeline 10, sets up grit drainage ware 11 with higher speed in every pipeline 10, through screwed pipe 12 flexonics between the pipeline 10.

When the rapid shield tunneling machine is used, firstly, a positioning hole is drilled in a rock wall through the shield cone 4, then the hole is gradually enlarged through the excavating tooth claw 16 fixed on the shield cutter head 6, the excavated gravel spiral gravel flow diverter 5 is discharged to the conveying pipeline 10, the gravel accelerating flow diverter 11 accelerates gravel to discharge the gravel backwards, and finally the rapid shield tunneling machine of the tunnel is formed.

The rapid shield machine adopts drilling and cutting or rolling type shields to be carried out simultaneously, reduces the resistance of the shields and greatly improves the efficiency.

The excavating tooth claw 16 is a chromium carbide composite wear-resisting plate, the peripheral racks and the shield cone 4 are hard alloy blocks with high wear resistance, and the service life is long.

Compared with the traditional open type excavation or semi-open type excavation operation, the discharged sand and stone materials are not accumulated in the conveying treatment bin 8, the continuity of the operation is not influenced, and the shield progress is improved.

The shield machine can carry out open type excavation or semi-open type excavation so as to be suitable for the condition that the geological conditions are better, the excavation surface can be kept stable in the shield or can be kept stable when auxiliary measures are taken, the excavation is gradually enlarged from the center of the tunnel, and even if the soil layer is poorer, the jack and a supporting plate are not needed to be used for temporarily supporting the excavation surface. The open type or semi-open type excavation is adopted, and the isolated barrier treatment, the deviation correction and the overexcavation are all easy in other modes. The shield machine has small disturbance to the stratum during open type or semi-open type excavation, can not generate excessive excavation quantity, can control the exposure time to be as small as possible, and realizes safe operation.

The shield machine can also be used as a full-section shield machine, the diameter of the bottom of a conical shell of a shield cutter head 2 is properly enlarged according to the diameter of a tunnel, an enclosure formed by a conveying treatment bin 8 behind the conical shell is used as a shield to carry out shield type operation, lining, backfilling and grouting equipment is arranged, an excavated tunnel section which is not yet lined plays a role of temporary support, bears the pressure of a surrounding soil layer, sometimes bears the underground water pressure and keeps underground water out. And the lining, backfilling and grouting equipment is arranged, so that the operations of excavation, soil discharge, lining and the like are carried out under the shield of the shield, and the circular operation of the working procedures of excavation, mucking, lining, backfilling, grouting and the like of the tunnel shield machine is realized.

The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A high-speed intelligent shield machine is characterized in that the shield machine comprises a shield device (2) and a gravel conveying device (3), wherein the shield device (2) comprises a shield cutter head (6) and a spiral gravel flow diverter (5), and is erected in front of the shield machine (1); the sand conveying device (3) consists of two or more conveying treatment bins (8), is positioned behind the shield device (2), and is fixedly connected with the shield device (2) through a steering connector (7); the conveying treatment bin (8) comprises a cylindrical cabin, a conveying pipeline (10) is installed in the cabin, a sand accelerated flow diverter (11) is arranged in the conveying pipeline (10), and the conveying pipelines (10) in the cabins are flexibly connected through threaded pipes (12); the conveying treatment bin (8) adopts a crawler-type structure, and the whole shield machine is supported by a propelling crawler wheel (9); during the shield constructs, erect shield structure device (2) in the place ahead of shield structure machine (1) and rotate at a high speed, utilize crawler-type structure to exert the shield structure pressure to grit shield structure device (2), through the effect of grit acceleration drainage ware (11) in pipeline (10), further with outside the grit crushed aggregates acceleration discharge shield structure machine (1), accomplish the shield and construct the operation.

2. The shield machine of claim 1, wherein: the main body of the shield cutter head (6) is a conical shell (15) with an opening at the top end, and a plurality of strip-shaped digging tooth claws (16) are arranged on the side wall of the conical shell (15) and are longitudinally and symmetrically arranged; the excavating tooth claw (16) is of an arc-shaped strip structure, the upper edge of the excavating tooth claw is provided with a tooth or a hob, the lower edge of the excavating tooth claw is welded and fixed on the side wall of the conical shell (15), an opening is cut at the welding position of the side wall of the conical shell, each excavating tooth claw (16) and the side wall of the conical shell (15) form a sand and stone outlet (17) together, and sand and stone cut by the excavating tooth claw (16) are discharged into the conical shell of the shield device (2).

3. The shield machine of claim 2, wherein: the spiral sandstone drainage device (5) is a rotary conical structure with blades, the center of the rotary conical structure is provided with a driving shaft (13), spiral blades (14) are fixed on the driving shaft (13), and the front end of the driving shaft (13) forms a shield cone (4); the spiral sandstone diverter (5) is positioned in the conical shell of the shield cutter head (6) and is coaxial with the shield cutter head (6), and the shield cone (4) extends out of the top opening of the conical shell (15); when the shield is used for shielding, the shield cone (4) is positioned at the foremost end of the shield machine (1).

4. The shield machine of claim 3, wherein: storehouse (8) are handled in a plurality of conveying longitudinal arrangement in proper order, and storehouse (8) are handled in every conveying is supported by propulsion athey wheel (9), and storehouse (8) are handled in the conveying and a plurality of pipeline (10) of connecting, set up grit drainage ware (11) with higher speed in every pipeline (10), through screwed pipe (12) flexonics between pipeline (10).

5. The shield machine of claim 4, wherein: the digging tooth claw (16) is a chromium carbide composite wear-resisting plate, and the peripheral racks or the hob and the shield cone (4) are hard alloy blocks with high wear resistance and long service life.

6. The shield tunneling machine according to any one of claims 1-5, wherein: when the shield machine (1) is used as a full-section shield machine, the diameter of the bottom of a conical shell of a shield cutter head (6) and the diameter of a cylindrical cabin of the conveying processing bin (8) are enlarged according to the diameter of a tunnel to form a surrounding shell formed by supporting pipe pieces as a shield; and (4) arranging lining, backfilling and grouting equipment to realize the circulation of the working procedures of excavation, mucking, lining, backfilling and grouting of the tunnel shield machine, and performing shield type operation.