CN2236544Y

CN2236544Y - Inserting shield structure

Info

Publication number: CN2236544Y
Application number: CN 95220205
Authority: CN
Inventors: 郭建国; 过百中; 杨惠光; 梁凤林; 邓举富; 何於琏; 白桂云; 张敏; 郑志敏
Original assignee: SCIENCE INST OF TUNNEL ENGINEERING ADMINISTRATION MINISTRY OF RAILWAYS; BEIJING CITY SUBWAY CONSTRUCTION CORP
Current assignee: SCIENCE INST OF TUNNEL ENGINEERING ADMINISTRATION MINISTRY OF RAILWAYS; BEIJING CITY SUBWAY CONSTRUCTION CORP
Priority date: 1995-08-25
Filing date: 1995-08-25
Publication date: 1996-10-02
Anticipated expiration: 2005-08-25

Abstract

The utility model discloses a slotted tool type shield structure which is mainly composed of a frame (10), slotting tools (3), slotting tools (16), a thrusting oil cylinder (12), a base (1) and a slag expelling mechanism (6). The upper part of the frame (10) is a half cross section elliptical arch block which is provided with 13 slotting tools (3) along a circumferential direction, the bottom surface of the base (1) is provided with 8 slotting tools (16), and slotting tools are pushed and inserted in soil layer in sequence by the thrust cylinder (12) forming a forepoling. Excavation is carried out under the forepoling, soil slag is expelled by the slag expelling mechanism (6), when a space is formed, the thrust cylinder (12) shrinks the frame (10) and is onwards pulled by the friction force between the slotting tools and the soil layer at the same time, and the utility model can endlessly advance by repeating the process. The utility model has the advantages of strong adaptability, convenient assembly and disassembly, flexible use and low cost.

Description

Slotting tool formula shield structure

The utility model relates to engineering machinery, especially relates to the tunnel construction machinery.

Continuous development along with urban construction, underground construction more and more widely, building of underground railway, a large amount of subsurface stormwater in the municipal engineering, building of sewage and heat distribution pipeline, day by day increase, yet, underground construction method is single, construction machinery is simple, and because underground soil property situation complexity, the constructing tunnel roof often caves in, cause underground construction speed slow, construction period is long, the cost height, current, extensively adopt shield method to carry out underground tunnel construction in the world, push mode shield structure has just been used in the subway construction in China Shanghai, improved speed of application, push mode shield structure generally adopts the prefabricated pipe section lining cutting, push ahead the support reaction that provides necessary by the lining cutting ring for the shield structure, and the lining cutting ring must have high strength and precision, otherwise the shield structure can not advance, and the shield structure passes in and out interval work plane, must on interval two ends or tunnel circuit vertical shaft be set, and construction cost is increased, push mode shield structure is full section working forms, can only be fit to the single job practices that matches with it, cause push mode shield structure bad adaptability, and shield structure high price is short expensive application life.

The purpose of this utility model is to provide a kind of energy advance support, and compliance is extensive, and the energy dismounting is simple to operate, the low novel shield structure that does not need the external world to provide support reaction just can advance of cost.

For achieving the above object, the utility model is to realize like this, according to tunnel the first half is the characteristics of elliptical shape, the work plane of novel shield structure also is designed to half section elliptical shape, frame is formed by fixedly connecting by arch block and base, bow member divides several, be welded by longeron respectively, base also is formed by connecting by two, so that dismounting transportation, bow member is provided with many arcwall face slotting tool along circumferential exterior surface, base end face is established many plane slotting tool, slotting tool all can slide in the track slide, every slotting tool is all advanced hydraulic oil cylinder driving by hydraulic pressure, slotting tool is stretched out forward to be inserted in the soil layer successively, when many all insert in the soil layer slotting tool after, be installed in that the breast boards on the base is withstood the soil layer in shield structure the place ahead between machine by cylinder pushes, the excavation operation is just carried out under the supporting that slotting tool forms side by side, dregs is sent by tapping mechanism, behind the metric space that excavates out the slotting tool that puts in soil layer one, advance oil cylinder to bounce back simultaneously, because frictional force is less than the frictional force between slotting tool and soil layer between frame and slotting tool, frame just is pulled to the distance in the place ahead, form an advance cycle, go round and begin again, the shield structure constantly advances, for the shield structure can advance on request, also on the shield structure, be provided with laser deviation correcting device and assisted diversion oil cylinder.

Because the utility model has adopted half section slotting tool structure, self-propelled, saved the necessary lining cutting ring of push mode shield structure, and be not subjected to the restriction of section configuration, energy choose reasonable section configuration, the shield structure is fully utilized, because slotting tool is arranged side by side at vault and has been realized advance support, be provided with breast boards in shield structure the place ahead, make the carrying out of whole digging operation safe ready, the utility model can be dismantled on work plane, from the tunnel that has become, withdraw from, saved vertical shaft, cost reduces, and the complete machine building block can repeatedly use.

Further the utility model is described below in conjunction with drawings and Examples.

Fig. 1 is a structural representation of the present utility model

Fig. 2 is the right sectional view of Fig. 1

Fig. 3 is the profile of overlooking of Fig. 1

Fig. 4 is the profile of slotting tool

Fig. 5 is the partial view that slotting tool cooperates with slide

Fig. 6 is a plane slotting tool profile

Fig. 7 is a cambered surface slotting tool profile

From Fig. 1, Fig. 2, can find out among Fig. 3, frame (10) is by left arch block (2), middle arch block (4), right arch block (8) and base (1) are formed, between connect by flange, three arch blocks are welded to form by 4 longerons respectively, rectangle base (1) also divides two, be connected into integral body by flange, two groups are vertically supported before and after establishing between base (1) and middle arch block (4), to increase the rigidity of whole bow member, and the working space in the middle of the formation shield machine frame (10), 5 cambered surface slotting tools (3) are housed on middle arch block (4), on left arch block (2) and right arch block (8), 4 cambered surface slotting tools (3) are housed respectively, as shown in Figure 7, and plane slotting tool (16) shown in Figure 6 is mounted on base (1) bottom surface, have 8, every slotting tool all is slidingly fitted in separately the guide rail slide (19), as shown in Figure 5.Guide rail slide (19) is fixed on arch block circumferential exterior surface and the base end face, guide rail slide (19) two ends cooperate is equipped with seal cover (7), every as can be seen from Figure 2 slotting tool by advancing oil cylinder (12) to drive, advance oil cylinder (12) one ends to be hinged on arch block and the base, piston rod and slotting tool (3), (16) hinge-coupled, after advancing oil cylinder (12) forward oil-feed, piston rod stretches out, promoting slotting tool respectively injects in the soil layer successively, after 21 slotting tools all insert, digging operation carries out, and dregs sent by the conveying worm (6) that is installed on the base (1), after excavating the space that forms a 500mm length, 21 advance oppositely oil-feed of oil cylinder (12), piston rod is shunk simultaneously, frame just is pulled to the place ahead 500mm by frictional force between slotting tool and the soil layer, finish a working cycles, for the soil layer that prevents shield structure dead ahead caves in, the utility model is provided with three breast boardss (5), drive respectively by three hydraulic cylinders (13), breast boards (5) can withstand on the soil layer in the place ahead with the stretching out of the piston rod of hydraulic cylinder (13).

As can be seen from Figure 4 on the slotting tool front end cutter head, the steel sword plate of handling through liquid extract (18) is installed by bolt, the wearing and tearing back is changed, and the tailgate (9) of the hinged installation of slotting tool afterbody provides the supporting that prevents that unstable soil layer from caving in, the slotting tool of tailgate (9) is installed, be only limited to shield structure top 9 slotting tool.

Can find out also that from Fig. 3 the base both sides have respectively installed one and turned to oil cylinder (17), piston rod stretches out and withstands on respectively that auxiliary shield structure turns on the soil layer of side when the shield structure turns to.

In Fig. 2, also shown the laser guide deviation correcting device, the light beam that the laser indicator sends is penetrated on the speculum (14) that is fixed on the bow member, reflex to accepting on the target plate (11) of being in a fixed position all the time then, the hot spot that receives on the target plate (11) when the deflection of shield structure will depart from the distance in normal position, apart from the degree of deflection that just can determine the shield structure qualitatively, be convenient to correct shield structure direction of advance according to this.

Claims

1. slotting tool formula shield structure is made up of frame, slotting tool, propelling oil cylinder, tapping mechanism etc., it is characterized in that:

(1) frame (10) is by left arch block (2), middle arch block (4), right arch block (8) and base (1) composition that is fixedly connected, along arch block (2), (4), (8) circumferential exterior surface and base (1) bottom surface is equipped with to be slidingly matched in track slide (19) the track slide (19) slotting tool (3) is housed, (16), track slide two ends are provided with seal cover (7) in slotting tool (3), (16) upper hinge connects propelling oil cylinder (12) piston rod, advance oil cylinder (12) hinge-coupled in arch block (2), (4), (8) and on the base (1)

(2) breast boards (5) is housed on frame (10), breast boards (5) and hydraulic jack (13) piston rod hinge-coupled, hydraulic cylinder (13) is fixed on the frame (10),

(3) laser reflective mirror (14) is housed on middle arch rack (4), goes up corresponding reflective mirror at base (1) laser pick-off target plate (11) is housed,

(4) in base (1) both sides fluid-link steering oil cylinder (17) is housed respectively laterally, turns to oil cylinder (17) piston rod top by the dress top board.

2. digger with slotting tool according to claim 1, it is characterized in that: slotting tool (3) (16) is by the Metal Material Welding moulding, its external surface of slotting tool (3) on the arch block (2) (4) (8) is a circular arc, its external surface of slotting tool (16) on the base (1) is the plane, and the slotting tool head is equipped with sword plate (18).

3. digger with slotting tool according to claim 1 and 2 is characterized in that: arch block (2) (4) (8) is gone up slotting tool (3) the afterbody hinge of installing tailgate (9) is installed.