CN201650300U

CN201650300U - Self-contained obstacle breaking and foundation stabilizing device of shield machine

Info

Publication number: CN201650300U
Application number: CN2010201510507U
Authority: CN
Inventors: 王伟刚; 李毕华; 吕建中; 滕丽
Original assignee: SHANGHAI SHIELD CENTER CO Ltd
Current assignee: SHANGHAI SHIELD CENTER CO Ltd
Priority date: 2010-04-06
Filing date: 2010-04-06
Publication date: 2010-11-24
Anticipated expiration: 2020-04-06

Abstract

The utility model discloses a self-contained obstacle breaking and foundation stabilizing device of a shield machine, which comprises a cutter head, a soil storehouse and other elements, wherein the soil storehouse is positioned between the cutter head and a cutter head driving mechanism, the cutter head driving mechanism is connected with the cutter head and controls the rotation of the cutter head; the soil storehouse, the cutter head driving mechanism, a pedestrian storehouse, a first drilling machine, a second drilling machine, an erector and a screw conveyor are positioned in a shield housing; the first drilling machine and the second drilling machine are respectively positioned at one side of the screw conveyor, a frame link bridge is fixed at one end of the screw conveyor, the erector is rotatably connected with the second drilling machine, a thrust cylinder is positioned between the screw conveyor and the shield housing, a spherical hinge is positioned at one side of a connecting bolt; a guide pipe, a spherical valve, a pipe joint and a control valve bank are positioned on the same straight line; the guide pipe and the pipe joint are respectively positioned at two sides of the spherical valve, and the pipe joint is fixedly connected with the second drilling machine. The self-contained barrier breaking and foundation stabilizing device can break obstacles in front to lead the shield machine to go forwards normally and spray grout to the excavation surface in front of the shield and the periphery of the excavation surface for stabilization.

Description

The self-carrying barrier-breaking of shield machine and foundation-reinforcing device

Technical field

The utility model relates to the shield machine field, particularly a kind of self-carrying barrier-breaking of shield machine and foundation-reinforcing device.

Background technology

Along with the encryption of domestic subway gauze and the increase of tunnel quantity, underground space resource is reducing gradually, the position in tunnel will be subjected to the restriction of many factors, cause often running in the shield-tunneling construction process various underground obstacles, using as a servant and discarded pipeline, foundation pile, diaphragm wall, boulder etc. as underground.The residing geological conditions of obstruction is variation very, and geological conditionss such as clay, sand, gravel, soft rock are arranged.

At present, when running into underground obstacle in the shield-tunneling construction process, the method that obstruction is disposed mainly contains two kinds: remove the method for obstruction and the method that shield machine directly cuts obstruction.The advantage of removing the obstruction method is relatively safe, and construction technology is comparative maturity also, and shortcoming is that influence basin is big, and the construction period of increase is longer, must carry out consolidation process on a large scale to the soil body, must increase great amount of investment.Comparatively speaking, the method that adopts shield machine directly to cut obstruction have influence little, save advantages such as duration and investment, but because the intensity of weak soil is lower, if when running into underground obstacle in the shield-tunneling construction process, the shield structure directly cuts and may drive in the obstruction process that obstruction moves forward and along with cutter head of shield machine rotates, the soil body is produced big disturbance, cause occurring landslide or surrounding building sedimentation equivalent risk.Therefore, must before shield structure cutting obstruction, earlier obstruction be carried out preliminary fragmentation, and the obstruction periphery soil body is reinforced.But, also do not have can carry out simultaneously device broken and that reinforce in the prior art.

The utility model content

Technical problem to be solved in the utility model provides a kind of self-carrying barrier-breaking and foundation-reinforcing device of shield machine, and its broken the place ahead obstruction can normally be pushed ahead shield machine, and reinforces to shield structure the place ahead excavation face and periphery injection slurries.

For solveing the technical problem, the utility model provides a kind of self-carrying barrier-breaking and foundation-reinforcing device of shield machine, it comprises cutterhead, Tu Cang, cutter plate driver mechanism, people's firm position, shield structure shell body, first rig, vehicle frame connects bridge, second rig, assembling machine, advance oil cylinder, screw machine, ball pivot, connecting bolt, guide pipe, ball valve, union and control valve group, the soil position in storehouse is between cutterhead and cutter plate driver mechanism, cutter plate driver mechanism is connected and controls the rotation of cutterhead with cutterhead, Tu Cang, cutter plate driver mechanism, people's firm position, first rig, second rig, assembling machine, screw machine is positioned at shield structure shell body, first rig and second rig lay respectively at a side of screw machine, vehicle frame connects the end that bridge is fixed on screw machine, the assembling machine and second rig are rotationally connected, advance oil cylinder between screw machine and shield structure shell body, ball pivot is positioned at a side of connecting bolt, guide pipe, ball valve, union, the control valve group is located along the same line, guide pipe and union lay respectively at the both sides of ball valve, and union is fixedlyed connected with second rig.

Preferably, described first rig and second rig all comprise the rig frame, turn to oil cylinder, revolute pair, firm banking, translation oil cylinder and drilling rod, the control valve group is positioned at an end of rig frame, turn to an end of oil cylinder to be fixed on the rig frame, revolute pair is between rig frame and firm banking, turn to the other end of oil cylinder to be fixed on the firm banking, translation oil cylinder and drilling rod are separately fixed at a side of rig frame.

Positive progressive effect of the present utility model is: the broken the place ahead of the utility model obstruction can normally be pushed ahead shield machine, avoids general artificial air pressure to deliver from godown and cuts the risk that obstruction brings.The utility model is in the deathtrap or the place of obstruction arranged, reinforce to shield structure the place ahead excavation face and periphery injection slurries, place at the as close as possible cutterhead in shield structure the place ahead forms the watertight bolt, when significant trouble takes place the end in shield structure the place ahead, can avoid the maintenance personal under the anti-water condition of air pressure, to carry out maintenance construction.Simultaneously, have certain intensity after the slurries sclerosis, not only can reduce the construction risk of deathtrap, can also fix the position of obstruction, guarantee that obstruction can be along with shield machine moves when shield structure cutting obstruction.

Description of drawings

Fig. 1 is the self-carrying barrier-breaking of the utility model shield machine and the internal construction schematic diagram of foundation-reinforcing device.

Fig. 2 is the self-carrying barrier-breaking of the utility model shield machine and the external structure schematic diagram of foundation-reinforcing device.

Fig. 3 is the structural representation of rig inside in the utility model.

The specific embodiment

Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.

As depicted in figs. 1 and 2, the self-carrying barrier-breaking of the utility model shield machine and foundation-reinforcing device comprise cutterhead 1, soil storehouse 2, cutter plate driver mechanism 3, people's firm position 4, shield structure shell body 5, first rig 6, vehicle frame connects bridge 7, second rig 8, assembling machine 9, advance oil cylinder 10, screw machine 11, ball pivot 12, connecting bolt 13, guide pipe 14, ball valve 15, union 16 and control valve group 18, soil storehouse 2 is between cutterhead 1 and cutter plate driver mechanism 3, cutter plate driver mechanism 3 and cutterhead 1 are connected and control the rotation of cutterhead 1, soil storehouse 2, cutter plate driver mechanism 3, people's firm position 4, first rig 6, second rig 8, assembling machine 9, screw machine 11 is positioned at shield structure shell body 5, first rig 6 and second rig 8 lay respectively at a side of screw machine 11, vehicle frame connects the end that bridge 7 is fixed on screw machine 11, the assembling machine 9 and second rig 8 are rotationally connected, and advance oil cylinder 10 between screw machine 11 and shield structure shell body 5.Ball pivot 12 is positioned at a side of connecting bolt 13, and guide pipe 14, ball valve 15, union 16, control valve group 18 are located along the same line, and guide pipe 14 and union 16 lay respectively at the both sides of ball valve 15, and union 16 can be fixedlyed connected with second rig 8.As shown in Figure 3, first rig 6 and second rig 8 all comprise rig frame 19, turn to oil cylinder 20, revolute pair 21, firm banking 22, translation oil cylinder 23 and drilling rod 24, control valve group 18 is positioned at an end of rig frame 19, turn to an end of oil cylinder 20 to be fixed on the rig frame 19, revolute pair 21 is between rig frame 19 and firm banking 22, turn to the other end of oil cylinder 20 to be fixed on the firm banking 22, translation oil cylinder 23 and drilling rod 24 are separately fixed at a side of rig frame 19.

On the top of shield machine and the bottom first rig 6 and second rig, 8, the first rigs 6 and second rig 8 be installed respectively all be furnished with independent hydraulic power unit.First rig 6 can pass native storehouse 2 to the probing of the front end of shield machine, is used to survey the geological condition, obstruction situation in the place ahead and to shield structure the place ahead grouting and reinforcing; Second rig 8 is oblique probing down from the bottom of shield machine, and the detection operations of below geology is helped predicting the sedimentation situation of shield structure, and can be in time to below soil body grouting reinforcing.The drilling rod of first rig 6 and second rig 8 satisfies area requirement stretching out on the direction and can necessarily adjusting, and can be in not time spent sealing, to prevent pouring in of muddy water.Under off position, first rig 6, second rig 8 and guide pipe 14 unclamp that to be formed by connecting be an individual components.

First rig 6 is turnable rigs, and its work plane is the shield machine front.During 6 work of first rig, cutterhead 1 must suspend digging.Guide pipe 14 for drill bit provides guiding, makes the probing function control the probing orientation exactly in the rig drilling process.Guide pipe 14 can be used as grouting pipe and uses, and must withdraw from drill bit this moment earlier.Ball pivot 12 can rotate in certain angle, for the guide pipe 14 that passes ball pivot 12 provides the rotary freedom of certain limit, enlarges the probing scope of first rig 6.Ball valve 15 is used to control the pipeline break-make, when not needing probing and during slip casting, for first rig 6, guide pipe 14 will withdraw from ball pivot 12, in case with rotation in cutterhead 1 collision.Because the geology detecting of shield machine driving the place ahead and front upper place is particularly important, first rig 6 uses the probing scope of lifting first rig 6 of ball pivot 12 energy maximum magnitudes, regionally detecting is carried out in the front upper place, obtain more fully observation data, for soil body analysis and anticipation provide powerful guarantee, and can enlarge the grouting and reinforcing scope, strengthen the stable of the digging face soil body, improve working security.Simultaneously, can enlarge the scope that first rig 6 cuts obstruction, zone so that shield machine cutting breaks the barriers.The operating path of first rig 6 is by cutterhead 1, so when not working, guide pipe 14 must be withdrawn from native storehouse 2, with avoid with rotate in cutterhead 1 interference, so ball valve 15 is installed in the rear portion of ball pivot 12.

Second rig 8 is fixed-direction formula rigs, and its work plane is the below of shield machine.For second rig 8, control drill bit and withdraw from guide pipe 14, ball valve 15 must be closed, in case extraneous muddy water pours in the shield structure.Union 16 is used for connecting, when needs were drilled work, union 16 was fixedlyed connected with second rig 8, and drill bit can outwards be drilled from the junction by guide pipe 14, when needs were made grouting and reinforcing, union 16 can directly connect the external slip casting of grouting pipeline.Relative top, space in the inside of shield machine and bottom is little, the space of effectively circling round can't be provided, and probing, slip casting and obstruction to the shield machine below soil body cut with the minimum point place the most important, therefore the guide pipe 14 of second rig 8 directly is fixed, is installed on the minimum point place of shield machine.

The power of first rig 6 and second rig 8 is all provided by hydraulic power unit, and control valve plays for 18 groups oil pressure is converted into moment of torsion, and the effect that the motion state of first rig 6 and second rig 8 is controlled.Reaction force in the work such as frame 19 is agent structures of first rig 6 and second rig 8, plays a part to be connected and fixed each parts, and when first rig 6 and the work of second rig 8, frame 19 also must bear probing, cut.Turn to oil cylinder 20 and translation oil cylinder 23 can adjust the initial angle and the front and back position of first rig 6 and

second rig

8,21 of revolute pairs provide rotary freedom.Drilling rod 24 is vitals of drilling, is the power output unit of rig.

The practical operation step of the self-carrying barrier-breaking of the utility model shield machine and foundation-reinforcing device is as follows: when obstruction was run in the place ahead, shield machine stopped to advance (one), and cutterhead 1 stops operating; (2) drilling rod 24 with first rig 6 and second rig 8 stretches out outside the shield machine, the obstruction of broken the place ahead and periphery; (3) withdrawal first rig 6 and second rig 8 inject slurries to improve the flowability of obstruction fragment by fairlead 14 to shield machine the place ahead and periphery; (4) inject the reinforcing slurries by first rig 6 and second rig 8 to shield machine the place ahead and periphery; (5) drilling rod 24 of withdrawal first rig 6 and second rig 8, shield machine pauses a period of time, waits to reinforce the slurries sclerosis; (6) open cutterhead 1 and screw machine 11, discharge the obstruction fragment that cuts, shield machine continues to push ahead.

Run into underground obstacle or soil condition is bad when shield machine the place ahead, be unfavorable for shield machine directly cutting by the time, the cutterhead of shield machine suspends and rotates, shield machine stops to advance, and utilizes drilling rod to drill to the front end soil body of cutterhead.If the place ahead soil condition is bad, the cutting dregs that can be taken out of according to the size variation and the drilling rod rollback of suffered resistance of drill bit in the drilling process and moment of torsion, judge that roughly the place ahead soil body is stable quality that belongs to sand layer, layer of gravel or clay layer, water content and the soil body etc., if the place ahead is the sand of self-stability difference or the poor stability of the soil body, just can waits drilling rod to withdraw from the back and carry out grouting and reinforcing in guide pipe one end connection Grouting Pipe; If the place ahead bigger underground obstacle that is intensity can be tentatively broken with obstruction by drilling rod, spray slip casting to the obstruction periphery then, reinforce the obstruction periphery soil body, when preventing shield cutter cutting obstruction, obstruction is along with shield machine moves together.Each drilling holes and late grouting can both form the zone of approximate column in figure body internal drilling direction, and after the slip casting of repeatedly holing, slurries connect into a monoblock, play the effect of integral reinforcing.

Though more than described the specific embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, and under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these embodiments.Therefore, protection domain of the present utility model is limited by appended claims.

Claims

1. the self-carrying barrier-breaking of a shield machine and foundation-reinforcing device, it is characterized in that, it comprises cutterhead, Tu Cang, cutter plate driver mechanism, people's firm position, shield structure shell body, first rig, vehicle frame connects bridge, second rig, assembling machine, advance oil cylinder, screw machine, ball pivot, connecting bolt, guide pipe, ball valve, union, the control valve group, the soil position in storehouse is between cutterhead and cutter plate driver mechanism, cutter plate driver mechanism is connected and controls the rotation of cutterhead with cutterhead, Tu Cang, cutter plate driver mechanism, people's firm position, first rig, second rig, assembling machine, screw machine is positioned at shield structure shell body, first rig and second rig lay respectively at a side of screw machine, vehicle frame connects the end that bridge is fixed on screw machine, the assembling machine and second rig are rotationally connected, advance oil cylinder between screw machine and shield structure shell body, ball pivot is positioned at a side of connecting bolt, guide pipe, ball valve, union, the control valve group is located along the same line, guide pipe and union lay respectively at the both sides of ball valve, and union is fixedlyed connected with second rig.

2. the self-carrying barrier-breaking of shield machine as claimed in claim 1 and foundation-reinforcing device, it is characterized in that, described first rig and second rig all comprise the rig frame, turn to oil cylinder, revolute pair, firm banking, translation oil cylinder and drilling rod, the control valve group is positioned at an end of rig frame, turn to an end of oil cylinder to be fixed on the rig frame, revolute pair is between rig frame and firm banking, turn to the other end of oil cylinder to be fixed on the firm banking, translation oil cylinder and drilling rod are separately fixed at a side of rig frame.