CN113120755A

CN113120755A - Segment dismounting device for urban shield tunnel and dismounting method thereof

Info

Publication number: CN113120755A
Application number: CN202110500175.9A
Authority: CN
Inventors: 张彦红; 范喜德; 王耀辉; 刘江涛; 李存军; 闫金鹏; 王笑微; 丰土根; 张箭; 张坤勇
Original assignee: Hohai University HHU; China Railway Shanghai Investment Group Co Ltd
Current assignee: Hohai University HHU; China Railway Shanghai Investment Group Co Ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2021-07-16
Anticipated expiration: 2041-05-08
Also published as: CN113120755B

Abstract

The invention discloses a segment dismounting device for an urban shield tunnel, which comprises: the lifting and retracting mechanism comprises a moving carrier, the moving carrier is connected with one end of a lifting and retracting arm beam through a lifting and steering mechanism, an auxiliary lifting and moving frame is arranged at the other end of the lifting and retracting arm beam, a lifting and moving mechanism is matched on the lifting and retracting arm beam in a sliding mode, a self-adjusting type safety impact hanging frame is arranged at the lower end of the lifting and moving mechanism, and a first auxiliary hanging frame and a second auxiliary hanging frame are arranged at the tops of two ends of the lifting and retracting arm beam respectively. According to the invention, through the structural design that the lifting moving mechanism is matched with the self-adjusting type safe impact hanging bracket, the continuous operation of detaching the duct piece and lifting the duct piece can be realized, the traditional two-step operation is combined into one step, the construction efficiency can be greatly improved, the construction period is shortened, the automatic rotation angle adjustment and the angle adjustment of inclination can be realized through the self-adjusting type safe impact hanging bracket, the stable clamping of the duct piece is increased, the automatic impact detachment is realized, the quick pull-connection can also be realized, and double insurance and safety are formed.

Description

Segment dismounting device for urban shield tunnel and dismounting method thereof

Technical Field

The invention relates to the technical field of urban shield tunnels, in particular to a segment dismounting device for an urban shield tunnel and a dismounting method thereof.

Background

The shield method is a fully mechanical construction method in the construction of the undercut method, it is to advance the shield machinery in the ground, prevent the collapse to the tunnel in taking place through shield outer casing and pipe sheet support surrounding rock, excavate the soil body with the cutting device in front of the excavation face at the same time, transport out of the hole through the unearthing machinery, lean on the jack to pressurize and jack in the rear portion, and assemble the precast concrete pipe sheet, form a mechanical construction method of the tunnel structure; the shield segment is a main assembly component for shield construction, is an innermost barrier of a tunnel and plays a role in resisting soil layer pressure, underground water pressure and some special loads;

the shield segment is a permanent lining structure of the shield tunnel, and the quality of the shield segment is directly related to the overall quality and safety of the tunnel, so that the waterproof performance and the durability of the tunnel are influenced; the negative ring duct piece is also called as a temporary duct piece, and the annular duct piece is arranged between the reaction frame and the shield jack when the shield starts so as to provide an acting force for advancing the shield machine;

the shield structure negative ring segment is also called as a temporary segment, when the shield structure is started, in a starting working shaft, the rear end of a shield structure machine is a reaction frame (a back providing counter force), an annular segment is arranged between the reaction frame and a shield structure jack so as to drive the forward propelling acting force for the shield structure machine until a shield tail of the shield structure machine enters a hole on the other side of a well wall, and a distance is driven forwards, so that the counter force generated by the propulsion of the shield structure machine can be offset by the friction force between a stratum and the positive ring segment, at this moment, the temporary segment between the reaction frame and the shield tail is used, and needs to be removed.

In the process of implementing the embodiment, the inventor finds that at least the following defects exist in the prior art:

(1) the negative ring duct piece occupies most space of the vertical shaft, the vertical transportation speed of the duct piece and other materials can be restricted, and the progress of shield construction is influenced, so the negative ring duct piece needs to be dismantled, the dismantling of the negative ring duct piece generally starts after 80 rings of shield tunneling, in the dismantling process, the shield tunnel needs to continuously transport soil out of the tunnel and continuously transport the duct piece into the tunnel, the dismantling of the negative ring duct piece can also influence the progress of shield construction, the duct piece is dismantled through a trolley in the tunnel in the prior art, and then the duct piece needs to be hoisted out of the shield tunnel starting well, so the two-step operation is realized, the efficiency is low, and the progress of shield construction can be influenced;

(2) the method for hoisting the negative ring pipe piece out of the vertical shaft generally comprises two modes, namely, the pipe piece is hoisted out through a crane, the shield tunnel starting shaft is deeper, and in the hoisting process for a long time, at least two unstable factors are generated, wherein the unstable factors include wind power blowing and unstable control of an operator, the pipe piece is easy to shake, so that the crane is unstable or a hoisting rope is broken, the pipe piece is hoisted out through a gantry crane, the gantry crane needs to be assembled on site, and a gantry crane assembly needs to be disassembled after hoisting is completed, so that the method is very troublesome;

(3) after the duct pieces are lifted out, the duct pieces need to be stacked and placed, and then the duct pieces can be conveniently transported, firstly, the inner joint of a lifting hole is connected with a lifting head through a bolt which is a loose temporary connection mode, the bolt is not stable enough, after the lifting is finished, the bolt needs to be taken down and reused, the operation is troublesome, secondly, the duct pieces are directly connected through bolts, and the operation of inserting screws and screwing nuts is very troublesome;

(4) piling up after the section of jurisdiction is lifted out is laid, and the in-process needs artifical supplementary, and is inefficient, and at the in-process that the section of jurisdiction put down, personnel need be close to the section of jurisdiction, and the direction angle when manual supplementary adjustment section of jurisdiction puts down has higher safety risk hidden danger.

(5) When the section of jurisdiction is demolishd, even take off the connecting bolt between the section of jurisdiction already, but because during the section of jurisdiction installation in earlier stage, wedge structure between the section of jurisdiction is joint effect in addition, this lifting force that just needs to exceed section of jurisdiction self weight leads to the section of jurisdiction to be being lifted and demolishs the in-process, when the section of jurisdiction being demolishd separates with other not demolishd sections of jurisdiction, has a sudden impact and rocks, both caused the influence to the stability of lifting equipment, cause great burden to the lifting rope again, cause the lifting rope fracture risk to increase.

(6) After the top segment of each ring is removed, the segment supporting force on the two sides of the tunnel is reduced, so that the risk of collapse is increased, and the conventional equipment lacks protection in the aspect;

(7) when the duct pieces on the lower sides of the two sides of each ring are removed, the lower ends of the duct pieces are positioned below the tracks, so that the duct pieces are directly lifted, hoisted and removed, and easily collide with the tracks, and the duct piece crushing probability is increased;

(8) when lifting out the section of jurisdiction through the crane, because rocking of section of jurisdiction, the section of jurisdiction that takes place easily being lifted collides with the condition between the section of jurisdiction that other are not torn open, leads to the section of jurisdiction damaged, and recycle rate descends.

Disclosure of Invention

The invention aims to provide a duct piece removing device for an urban shield tunnel and a removing method thereof, so as to solve the technical problems in the background technology.

The technical scheme of the invention is as follows: the utility model provides a device is demolishd to section of jurisdiction for city shield tunnel, includes: the lifting and retracting mechanism comprises a moving carrier, the moving carrier is connected with one end of a lifting and retracting arm beam through a lifting and steering mechanism, an auxiliary lifting and moving frame is arranged at the other end of the lifting and retracting arm beam, a lifting and moving mechanism is matched on the lifting and retracting arm beam in a sliding mode, a self-adjusting type safety impact hanging frame is arranged at the lower end of the lifting and moving mechanism, and a first auxiliary hanging frame and a second auxiliary hanging frame are arranged at the tops of two ends of the lifting and retracting arm beam respectively.

As a further optimization of the technical scheme, the self-adjusting safety impact hanger comprises a steering top plate, a duct piece quick connector is arranged on the outer wall of the steering top plate, a middle support plate is connected below the steering top plate through an angle adjusting mechanism, the bottom of the middle support plate is connected with a hanger bottom plate through an impact buffer box, and a main clamping mechanism and an auxiliary clamping mechanism are respectively arranged on two sides of the middle support plate.

As a further optimization of the technical scheme, the steering top plate comprises an upper plate and a lower plate, the top of the lower plate is rotatably connected with the upper plate, the middle of the top of the lower plate is connected with a steering motor through a steering gear and a driving gear, and the steering motor is fixed on the top of the upper plate;

ear seats are respectively arranged on two sides of the upper plate.

As a further optimization of the technical scheme, the adjusting mechanism comprises two angle adjusting hydraulic cylinders, two angle adjusting hydraulic cylinders are arranged in each group in a crossed mode, and the upper ends and the lower ends of the two angle adjusting hydraulic cylinders correspond to the four corners of the lower supporting plate and the middle supporting plate respectively.

As a further optimization of the technical scheme, the upper side and the lower side of the impact buffer box are respectively fixedly connected with the bottom of the middle support plate and the top of the hanger base plate, the impact buffer box comprises a plurality of groups of linear motor bar-shaped stators and linear motor rotors which are electromagnetically matched, the linear motor bar-shaped stators and the linear motor rotors are distributed in an annular array mode by taking the circle center of the impact buffer box as a central point, two ends of each linear motor rotor are respectively connected with an impact block through compression springs, and two ends of each linear motor bar-shaped stator are respectively provided with an end plate.

As a further optimization of the technical scheme, the main clamping mechanism comprises two clamping arm supports and a main clamping hydraulic cylinder, wherein the clamping arm supports are symmetrically arranged at two sides of the middle support plate, the middle part of each clamping arm support is hinged with the side wall of the middle support plate, the upper end of each clamping arm support is hinged with one end of the main clamping hydraulic cylinder, and the other end of each main clamping hydraulic cylinder is hinged with the side wall of the middle support plate;

the auxiliary clamping mechanism comprises a telescopic hydraulic cylinder, an L-shaped frame, an auxiliary clamping hydraulic cylinder and an auxiliary clamping arm rod, the middle of the auxiliary clamping arm rod is hinged to the lower end of the L-shaped frame, one end, far away from the hanger base plate, of the auxiliary clamping arm rod is hinged to one end of the auxiliary clamping hydraulic cylinder, the other end of the auxiliary clamping hydraulic cylinder is hinged to the side end of the L-shaped frame, and the top of the L-shaped frame is connected with the lower end of the telescopic hydraulic cylinder.

As a further optimization of the technical scheme, the duct piece quick connector comprises an insertion type quick connector, the insertion type quick connector comprises a steel wire braided rope sleeve, two ends of the steel wire braided rope sleeve are respectively connected with one side of a frame-shaped frame and one end of a fixed sleeve, the other end of the fixed sleeve is connected with one end of a thread push-pull cylinder through a deformation frame, a transmission flexible shaft penetrates through the middle of the steel wire braided rope sleeve and the fixed sleeve, one end of the transmission flexible shaft is connected with a tightness control adjusting motor, and the other end of the transmission flexible shaft is connected with a thread adjusting rod penetrating through the thread push-pull cylinder;

the deformation frame comprises a plurality of groups of short rods, each group of short rods is hinged with two short rods, and two ends of each group of short rods are hinged with the end parts of the fixed sleeve and the thread push-pull cylinder respectively.

As a further optimization of the technical scheme, the lifting steering mechanism comprises a lifting hydraulic cylinder, a toothed ring, a main beam steering motor and a main beam steering gear;

the hoisting moving mechanism comprises a moving trolley and two main electric hoists symmetrically arranged on two sides of the moving trolley;

the auxiliary lifting moving frame comprises an auxiliary lifting hydraulic cylinder and a supporting wheel.

As a further optimization of the technical scheme, the second auxiliary hanging bracket comprises an auxiliary frame plug-in type quick connector, an adjustable supporting trolley and an auxiliary electric hoist, the structure of the auxiliary frame plug-in type quick connector is the same as that of the plug-in type quick connector, the auxiliary frame plug-in type quick connector is connected with the auxiliary electric hoist, and the auxiliary electric hoist is fixedly arranged on one side of one end of the lifting arm beam;

the adjustable supporting trolley comprises a supporting pulley, and the auxiliary frame lifting rope is erected on the supporting pulley;

the structure of the first auxiliary hanging bracket is the same as that of the second auxiliary hanging bracket.

The invention also discloses a dismounting method of the duct piece dismounting device for the urban shield tunnel, which comprises the following steps:

s1, moving the whole device to one side of the wellhead of the shield tunnel shaft, and then starting to unfold;

s2, preliminarily clamping and fastening the top segment of the negative ring by using a main clamping mechanism;

s3, tensioning the top segment by using the segment quick connector to finish double fastening;

s4, utilizing the first auxiliary hanging bracket and the second auxiliary hanging bracket to assist in tensioning adjacent pipe pieces of the top pipe piece;

s5, gradually hammering, punching, laterally moving and extracting the top segment of the negative ring by using an impact buffer box;

the auxiliary clamping mechanism assists in clamping the duct piece in the dismounting process;

simultaneously checking whether adjacent duct pieces on two sides need to be supported;

then, the segment is lifted by utilizing the first auxiliary lifting frame and the second auxiliary lifting frame to be matched with a lifting moving mechanism;

after the top segment is lifted to the ground height, the top segment is safely placed by using a self-adjusting type safe impact hanging bracket, and the detachment of the top segment is completed;

s6, removing the duct piece on the upper side of the negative ring, adjusting the self-adjusting type safety impact hanging bracket to an inclined state, clamping and detaching the duct piece, and then lifting the duct piece to the ground for safe placement;

removing the middle-lower side duct piece, and lifting and pulling the middle-lower side duct piece to remove the middle-lower side duct piece by using the angle adjusting hydraulic cylinder;

s7, beginning to remove the bottom edge pipe piece of the negative ring, firstly, lifting and pulling the pipe piece through the quick pipe piece connector, the first auxiliary hanging bracket and the second auxiliary hanging bracket in a matching way, then, clamping the bottom edge pipe piece, and then, lifting and removing the pipe piece to the ground to finish the removal of one ring;

and S8, moving the whole equipment along the axial direction of the negative ring to the position of the next ring for dismantling.

The invention provides a duct piece removing device for an urban shield tunnel and a removing method thereof through improvement, compared with the prior art, the duct piece removing device has the following improvement and advantages:

firstly, through the structural design that the lifting moving mechanism is matched with the self-adjusting type safe impact hanging frame, the continuous operation of detaching the duct piece and lifting the duct piece can be realized, the traditional two-step operation is combined into one-step operation, the construction efficiency can be greatly improved, and the construction period can be shortened;

in the invention, the first auxiliary hanging frame and the second auxiliary hanging frame are used for assisting in lifting the self-adjusting type safety impact hanging frame, so that the shaking in the pipe piece lifting process can be effectively reduced, the stability in the pipe piece lifting process is improved, and the safety is higher;

thirdly, the two ends of the device are supported by the matching design of the telescopic boom beam, the lifting steering mechanism, the auxiliary lifting moving frame and the action carrier, so that the device has the stability of a gantry crane and the flexibility of a crane, can be directly folded onto the action carrier after the lifting and dismounting work is finished, does not need to be gradually dismounted, and is more convenient;

fourthly, in the invention, the plug-in quick connector can be inserted into a threaded hole of a segment at the top or a segment hoisting hole, the tightness control adjusting motor drives the threaded adjusting rod to rotate through the transmission flexible shaft, the threaded push-pull cylinder is pushed towards the direction of the fixed sleeve, so that 2 short rods which are hinged with each other are forced to arch up, the diameter range is increased, the arched short rods can be clamped on the threaded holes or the hoisting hole and cannot be drawn out, the quick connection is realized, and finally, workers operate the ratchet wheel tightener to tighten the pull rope, so that the drawknot connection of the hoisting equipment and the segment can be completed, compared with the traditional operation of bolt connection or nut screwing, the connection operation is more convenient, and the construction efficiency can be improved;

fifth, in the invention, the steering motor can drive the lower plate to rotate through the driving gear and the steering gear, so that the lifted duct piece can rotate to adjust the angle, the duct piece stacking work does not need manual assistance, personnel are not needed to press close, and the lifting device is safer and more convenient;

sixth, in the invention, the sub-frame plug-in quick connectors of the first sub-hanger and the second sub-hanger can be inserted into the ear seats on the two sides of the upper plate, so that the first sub-hanger and the second sub-hanger are respectively connected with the two sides of the steering top plate, the first sub-hanger and the second sub-hanger can act together with the lifting and moving mechanism to lift the duct piece, and the stability in the lifting and pulling process is improved;

seventhly, the angle adjusting hydraulic cylinders can be respectively started to stretch, and the stretching energy of the angle adjusting hydraulic cylinders drives the middle support plate and the part at the bottom of the middle support plate to rotate to adjust the inclination angle, so that the segment can be conveniently stacked and placed after being hung and disassembled, and the lower ends of the middle and lower segments can be pulled and lifted towards one side far away from the track when the middle and lower segments are disassembled, so that the segment can be safely disassembled;

eighthly, in the invention, the linear motor bar-shaped stator and the linear motor rotor form a double-variable bar-shaped linear motor, the linear motor rotor in the impact buffer box can rapidly and linearly move in the linear motor bar-shaped stator, and the end plate is impacted by pushing the impact block to generate vibration, so that the impact buffer box can directionally vibrate and impact the circumferential or axial position of the negative ring, and the duct piece can be gradually pulled out by the lateral movement of the hammer impact;

in the invention, when the self-adjusting safety impact hanging bracket shakes in the lifting process, the sliding friction of the linear motor rotor in the linear motor bar-shaped stator can partially offset the shaking acting force of the self-adjusting safety impact hanging bracket, and the principle of the linear motor rotor is the same as that of a high-rise top shaking-proof stabilizer, so that the lifting stability can be improved;

the lifting and steering mechanism can realize height lifting adjustment and position rotation adjustment of the lifting and contracting arm beam, the lifting and moving mechanism can realize lifting and moving of the self-adjusting safety impact hanger, and the auxiliary lifting and moving frame can support two ends of the lifting and contracting arm beam to form a portal frame form, so that the device has the flexibility of a crane and the stability of the portal frame;

according to the invention, the main clamping mechanism has a large volume and strong clamping force, in the duct piece lifting and detaching process, one side of the duct piece is an open space, and the main clamping mechanism can clamp the duct piece from the open side of the duct piece so as to clamp and fix the duct piece;

the auxiliary clamping arm rod has a small volume, when the duct piece is just detached, the space between the detached duct piece and the duct piece which is not detached is small, the auxiliary clamping arm rod can enter a small gap, a timely clamping effect is achieved on the duct piece in the detaching process, the stability of the duct piece when the duct piece is detached is improved, the duct piece is prevented from being collided after being detached, and the safety is higher;

thirteen, in the invention, the first auxiliary hanging frame and the second auxiliary hanging frame can be respectively connected with two sides of the steering top plate to form a common action with the lifting moving mechanism, so that the segment is lifted, the stability in the lifting and pulling process is improved, and when the segment at the top of the negative ring is lifted and detached, the adjacent segment of the segment at the top can be temporarily supported, so that the segment is prevented from collapsing and is safer.

Drawings

The invention is further explained below with reference to the figures and examples:

FIG. 1 is a front view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is a side view of the self-adjusting safety impact hanger of the present invention;

FIG. 4 is an enlarged view of the structure of FIG. 3B according to the present invention;

FIG. 5 is a top view of the main clamping mechanism of the present invention;

FIG. 6 is a top plan view of the upper plate of the present invention;

FIG. 7 is a front view of the angle adjustment mechanism of the present invention;

FIG. 8 is a top view of the surge tank of the present invention;

FIG. 9 is a front view of a second secondary hanger of the present invention;

FIG. 10 is a front view of a segment quick connector of the present invention;

FIG. 11 is an enlarged view of the structure at A in FIG. 10 according to the present invention;

FIG. 12 is a short bar position profile of the present invention;

FIG. 13 is a top plan view of the telescopic boom beam of the present invention;

FIG. 14 is a side view of the adjustable support cart of the present invention;

FIG. 15 is a side view of the auxiliary support frame of the present invention;

FIG. 16 is a top view of the auxiliary support frame of the present invention;

fig. 17 is a view showing the grip arm support and the sub-grip arm lever of the present invention in a retracted state;

FIG. 18 is a view of the self-adjusting safety impact hanger of the present invention in a lifted condition;

FIG. 19 is a state diagram of the self-adjusting safety impact crane for removing a side segment of a negative ring of the present invention;

fig. 20 is a stowed state diagram of the present invention.

Description of reference numerals:

1. a self-adjusting type safety impact hanger, 11, a steering top plate, 111, a steering motor, 112, a steering gear, 113, a driving gear, 114, an upper plate, 115, a lower plate, 116, an ear seat, 12, an angle adjusting mechanism, 121, an angle adjusting hydraulic cylinder, 13, a middle support plate, 14, an impact buffer box, 141, a linear motor bar-shaped stator, 142, a linear motor mover, 143, a compression spring, 144, an end plate, 145, an impact block, 15, a hanger bottom plate, 16, a main clamping mechanism, 161, a clamping arm frame, 162, a lower clamping plate, 163, a main clamping hydraulic cylinder, 164, a reinforcing connecting rod, 17, a segment quick connector, 171, a plug-in quick connector, 1711, a frame, 1712, a tightness control adjusting motor, 1713, a steel wire braided rope sleeve, 4, a transmission flexible shaft, 1715, a fixed sleeve, 1716, a frame, 17161, a short rod, 17162, a wear-resistant coating, 1717, a thread pushing and pulling cylinder, 1718. a threaded adjusting rod 172, a ratchet tightener 173, a pull rope 18, a secondary clamping mechanism 181, a telescopic hydraulic cylinder 182, an L-shaped frame 183, a secondary clamping hydraulic cylinder 184, a secondary clamping arm rod 2, a mobile carrier 3, a lifting steering mechanism 31, a lifting hydraulic cylinder 32, a toothed ring 33, a main beam steering motor 34, a main beam steering gear 4, a first secondary hanger 5, a lifting moving mechanism 51, a main hoist 52, a moving trolley 6, a lifting arm beam 7, a second secondary hanger 71, a secondary frame plug-in quick joint 72, an adjustable supporting trolley 721, a supporting pulley 722, a power wheel 723, a transverse adjusting motor 73, a secondary frame lifting rope 74, a secondary hoist 8, an auxiliary lifting moving frame 81, a rotary seat 82, an auxiliary lifting hydraulic cylinder 83, a supporting wheel 84, an auxiliary supporting frame 85, an auxiliary frame rotating motor 86, a auxiliary frame 86, a lifting hydraulic cylinder 86, an auxiliary lifting hydraulic cylinder 2, a lifting arm rod, a movable carrier, a lifting motor, a main beam plug-in a, A strengthening support hydraulic cylinder 87 and a support foot plate.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 20, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.

Example 1:

the present invention provides a segment removing device for an urban shield tunnel and a removing method thereof by improving, as shown in fig. 1 to 20, the segment removing device for the urban shield tunnel, comprising: the device comprises a mobile carrier 2, wherein the mobile carrier 2 is connected with one end of a telescopic boom beam 6 through a lifting steering mechanism 3, the mobile carrier 2 is a flat car, the telescopic boom beam 6 is a hydraulic telescopic cylinder, an auxiliary lifting moving frame 8 is arranged at the other end of the telescopic boom beam 6, a lifting moving mechanism 5 is slidably matched on the telescopic boom beam 6, a self-adjusting safety impact hanging bracket 1 is arranged at the lower end of the lifting moving mechanism 5, and a first auxiliary hanging bracket 4 and a second auxiliary hanging bracket 7 are respectively arranged at the tops of two ends of the telescopic boom beam 6.

Through the structural design that the lifting moving mechanism 5 is matched with the self-adjusting type safety impact hanger 1, the continuous operation of detaching the duct piece and lifting the duct piece can be realized, the traditional two-step operation is combined into one-step operation, and the construction efficiency is greatly improved;

the self-adjusting safety impact hanger 1 is lifted in an auxiliary mode through the first auxiliary hanger 4 and the second auxiliary hanger 7, so that the shaking in the pipe piece lifting process can be effectively reduced, the stability in the pipe piece lifting process is improved, and the safety is higher;

through the cooperation design of the telescopic boom beam 6, the lifting steering mechanism 3, the auxiliary lifting moving frame 8 and the action carrier 2, two ends of the device are supported, the stability of a gantry crane is achieved, the flexibility of a crane is achieved, the device can be directly folded onto the action carrier 2 after the lifting and dismantling work is completed, and the device is not required to be gradually disassembled and is more convenient.

The self-adjusting type safe impact hanger 1 comprises a steering top plate 11, a duct piece quick connector 17 is arranged on the outer wall of the steering top plate 11, a middle support plate 13 is connected below the steering top plate 11 through an angle adjusting mechanism 12, the bottom of the middle support plate 13 is connected with a hanger bottom plate 15 through an impact buffer box 14, and a main clamping mechanism 16 and an auxiliary clamping mechanism 18 are respectively arranged on two sides of the middle support plate 13; turning to roof 11 and can realizing automatic rotation regulation angle, angle adjusting mechanism 12 can realize automatic regulation inclination, strikes buffer tank 14 and can realize strikeing the dismantlement, and main clamp mechanism 16 and vice clamp mechanism 18 can realize the stable centre gripping to the section of jurisdiction, and section of jurisdiction quick connector 17 can realize the quick drawing with the section of jurisdiction and connect, forms dual fail-safe, and is safer.

The steering top plate 11 comprises an upper plate 114 and a lower plate 115, a raised vertical cylindrical structure is arranged in the middle of the top of the lower plate 115, the upper end of the vertical cylindrical structure penetrates through a round hole in the middle of the upper plate 114 and is connected with a steering gear 112, one side of the steering gear 112 is in meshing connection with a driving gear 113, the top of the driving gear 113 is connected with a steering motor 111, and the steering motor 111 is fixedly mounted on the top of the upper plate 114; the steering motor 111 can drive the lower plate 115 to rotate through the driving gear 113 and the steering gear 112, so that the lifted duct piece can rotate to adjust the angle, the duct piece stacking work does not need manual assistance, personnel are not needed to press close, and the lifting device is safer and more convenient;

ear seats 116 are respectively arranged on two sides of the upper plate 114, and a round hole is arranged in the middle of each ear seat 116; the sub-frame insertion type quick connectors 71 of the first sub-hanger 4 and the second sub-hanger 7 can be inserted into the ear seats 116 on two sides of the upper plate 114, and the first sub-hanger 4 and the second sub-hanger 7 are respectively connected with two sides of the steering top plate 11, so that the first sub-hanger 4 and the second sub-hanger 7 can act together with the lifting moving mechanism 5 to lift the pipe piece, and the stability in the lifting process is improved.

The adjusting mechanism 12 comprises two groups of angle adjusting hydraulic cylinders 121, two groups of angle adjusting hydraulic cylinders 121 are arranged in a crossed manner, and the upper ends and the lower ends of the two groups of angle adjusting hydraulic cylinders 121 correspond to the four corners of the lower plate 115 and the middle support plate 13 respectively; the angle adjustment hydraulic cylinder 121 can be respectively started to stretch out and draw back, the extension plate 13 and the part at the bottom of the middle extension plate 13 are driven to rotate to adjust the inclination angle by utilizing the stretching energy of the angle adjustment hydraulic cylinder 121, so that the segment can be conveniently hung and disassembled to be stacked and placed, and when the segment at the middle lower side is disassembled, the lower end of the segment at the middle lower side is pulled and lifted to one side far away from the track, so that the segment can be safely disassembled.

The upper side and the lower side of the impact buffer box 14 are respectively fixedly connected with the bottom of the middle support plate 13 and the top of the hanger base plate 15, the impact buffer box 14 comprises a plurality of groups of linear motor bar-shaped stators 141 and linear motor movers 142 which are electromagnetically matched, the linear motor movers 142 are positioned in the middle of the linear motor bar-shaped stators 141, the linear motor bar-shaped stators 141 and the linear motor movers 142 are distributed in an annular array mode by taking the circle center of the impact buffer box 14 as a central point, two ends of the linear motor movers 142 are respectively connected with an impact block 145 through compression springs 143, and two ends of the linear motor bar-shaped stators 141 are respectively provided with end; the linear motor bar-shaped stator 141 and the linear motor rotor 142 form a bilateral bar-shaped linear motor, the linear motor rotor 142 in the impact buffer box 14 can rapidly and linearly move in the linear motor bar-shaped stator 141, and the impact block 145 is pushed to impact the end plate 144 to generate vibration, so that the impact buffer box 14 can directionally vibrate and impact the circumferential or axial position of the negative ring, and the duct piece can be gradually pulled out by the lateral movement of the hammer impact; when the linear motor rotor 142 and the linear motor bar-shaped stator 141 rotate in a power-off state, the linear motor rotor 142 can slide freely in the linear motor bar-shaped stator 141 and only friction force blocks the linear motor rotor, when the self-adjusting safety impact hanger 1 shakes in the lifting process, sliding friction of the linear motor rotor 142 in the linear motor bar-shaped stator 141 can partially offset shaking acting force of the self-adjusting safety impact hanger 1, and the principle of the linear motor rotor 142 is the same as that of a high-rise top anti-shaking stabilizer, so that the lifting stability can be improved.

The main clamping mechanism 16 comprises two clamping arm supports 161, a lower clamping plate 162 and a main clamping hydraulic cylinder 163, wherein the clamping arm supports 161 are symmetrically arranged at two sides of the middle support plate 13, the lower clamping plate 162 is arranged at the lower end of the clamping arm support 161, the middle part of the clamping arm support 161 is hinged with the side wall of the middle support plate 13, the upper end of the clamping arm support 161 is hinged with one end of the main clamping hydraulic cylinder 163, and the other end of the main clamping hydraulic cylinder 163 is hinged with the side wall of the middle support plate 13; the main clamping mechanism 16 is large in size and strong in clamping force, one side of the duct piece is an open space in the duct piece lifting and detaching process, and the main clamping mechanism 16 can clamp the duct piece from the open side of the duct piece to clamp and fix the duct piece;

the middle parts of the two clamping arm supports 161 are connected through a reinforcing connecting rod 164; the reinforcement link 164 is used to improve the integrity of the main clamp mechanism 16;

the auxiliary clamping mechanism 18 comprises a telescopic hydraulic cylinder 181, an L-shaped frame 182, an auxiliary clamping hydraulic cylinder 183 and an auxiliary clamping arm rod 184, the middle part of the auxiliary clamping arm rod 184 is hinged with the lower end of the L-shaped frame 182, one end, far away from the hanger bottom plate 15, of the auxiliary clamping arm rod 184 is hinged with one end of the auxiliary clamping hydraulic cylinder 183, the other end of the auxiliary clamping hydraulic cylinder 183 is hinged with the side end of the L-shaped frame 182, the top of the L-shaped frame 182 is connected with the lower end of the telescopic hydraulic cylinder 181, and the telescopic hydraulic cylinder 181 is fixedly installed on one side of the middle; vice clamp arm pole 184 volume is less, when the section of jurisdiction is just pulled apart, and the section of jurisdiction being pulled apart is less with the section of jurisdiction not being pulled apart between the interval, and vice clamp arm pole 184 can get into in less space, plays timely centre gripping effect to the section of jurisdiction of pulling apart the in-process, improves the stability of section of jurisdiction when being pulled apart, prevents that the section of jurisdiction from being pulled apart the back and colliding with, and is safer.

The segment quick connector 17 comprises an insertion type quick connector 171, a ratchet tightener 172 and a pull rope 173, the insertion type quick connector 171 is connected with the outer wall of the lower plate 115 through the pull rope 173, and the ratchet tightener 172 is arranged in the middle of the pull rope 173;

the plug-in type quick connector 171 comprises a frame 1711, a tightness control adjusting motor 1712, a steel wire braided rope sleeve 1713, a transmission flexible shaft 1714, a fixed sleeve 1715, a deformation frame 1716, a short rod 17161, a wear-resistant coating 17162, a thread push-pull cylinder 1717 and a thread adjusting rod 1718, wherein one side of the frame 1711 is connected with a pull rope 173, the other side of the frame 1711 is connected with one end of the steel wire braided rope sleeve 1713, the other end of the steel wire braided rope sleeve 1713 is connected with one end of the fixed sleeve 1715, the other end of the fixed sleeve 1715 is connected with one end of the thread push-pull cylinder 1717 through the deformation frame 1716, the transmission flexible shaft 1714 is penetrated in the middle of the steel wire braided rope sleeve 1713, one end of the transmission flexible shaft 1714 is penetrated in the middle of the frame 1711 and is connected with the tightness control adjusting motor 1712, the tightness control adjusting motor 1712 is fixedly arranged in the frame 1711, one end of the transmission flexible shaft 1714 far, the thread adjusting rod 1718 penetrates through the thread push-pull cylinder 1717, and the thread adjusting rod 1718 is in thread fit with the thread push-pull cylinder 1717;

the deformation frame 1716 comprises a plurality of groups of short rods 17161, each group of short rods 17161 is hinged with two, two ends of each group of short rods 17161 are hinged with the end parts of the fixed sleeve 1715 and the thread push-pull barrel 1717 respectively, and the plurality of groups of short rods 17161 are distributed in an annular array by taking the circle center of the fixed sleeve 1715 as a central point; the distribution mode enables the deformation frame 1716 to be stressed more uniformly and stably;

the outer wall of the short rod 17161 at one side of the deformation frame 1716 close to the fixed sleeve 1715 is coated with a wear-resistant coating 17162; the wear-resistant coating 17162 is made of a teflon material, so that the durability can be improved;

plug-in quick-operation joint 171 can insert the threaded hole of top section of jurisdiction or in the section of jurisdiction hoist hole, the tight control adjustment motor 1712 drives threaded adjustment pole 1718 rotatory through driving flexible axle 1714, push away a section of thick bamboo 1717 to fixed sleeve 1715 direction promotion with the screw thread, make 2 stub 17161 of looks articulated compel hunch-ups, diameter range increases, let the stub 17161 of hunch-up can block on screw hole or hoist hole, can't take out, reach the high-speed joint, workman's operation ratchet turn-buckle 172 tightens up stay cord 173 at last, alright accomplish the drawknot of lifting device and section of jurisdiction and be connected, compare in traditional bolt connection or twist nut's operation, this connection operation is more convenient, can improve the efficiency of construction.

Through adopting above-mentioned technical scheme, automatic rotation regulation angle when can realize hanging to tear open the section of jurisdiction, automatic regulation inclination, and can realize assaulting the dismantlement, realize the stable centre gripping to the section of jurisdiction to and realize drawing fast with the section of jurisdiction and connect, form dual fail-safe, let the section of jurisdiction hang tear open nimble safety.

Example 2:

the present invention provides a segment removing device for an urban shield tunnel and a removing method thereof by improving, as shown in fig. 1 to 20, the segment removing device for the urban shield tunnel, comprising: the device comprises a mobile carrier 2, wherein the mobile carrier 2 is connected with one end of a telescopic boom 6 through a lifting steering mechanism 3, the telescopic boom 6 is a hydraulic telescopic cylinder, the other end of the telescopic boom 6 is provided with an auxiliary lifting moving frame 8, a lifting moving mechanism 5 is slidably matched on the telescopic boom 6, the lower end of the lifting moving mechanism 5 is provided with a self-adjusting safety impact hanging frame 1, and the tops of two ends of the telescopic boom 6 are respectively provided with a first auxiliary hanging frame 4 and a second auxiliary hanging frame 7.

The lifting steering mechanism 3 comprises a lifting hydraulic cylinder 31, a toothed ring 32, a main beam steering motor 33 and a main beam steering gear 34, the upper end and the lower end of the lifting hydraulic cylinder 31 are respectively rotatably connected with the telescopic boom beam 6 and the action carrier 2, the toothed ring 32 is sleeved on the outer wall of the lifting hydraulic cylinder 31, one side of the toothed ring 32 is meshed and connected with the main beam steering gear 34, the top of the main beam steering gear 34 is connected with the main beam steering motor 33, and the main beam steering motor 33 is fixed on the action carrier 2;

the hoisting moving mechanism 5 comprises two main electric hoists 51 and a moving trolley 52, the two main electric hoists 51 are symmetrically arranged on two sides of the bottom of the moving trolley 52, and the lower ends of the two main electric hoists 51 are respectively connected with two sides of the top of the steering top plate 11;

the auxiliary lifting moving frame 8 comprises a rotating seat 81, an auxiliary lifting hydraulic cylinder 82, a supporting wheel 83, an auxiliary supporting frame 84 and an auxiliary frame rotating motor 85, wherein the rotating seat 81 is connected with one end, far away from the action carrier 2, of the lifting arm beam 6 through the auxiliary frame rotating motor 85, one side of the rotating seat 81 is connected with the auxiliary supporting frame 84 through the auxiliary lifting hydraulic cylinder 82, and the supporting wheel 83 is installed in the middle of the auxiliary supporting frame 84;

the outer walls of the two sides of the auxiliary support frame 84 are respectively provided with a reinforced support hydraulic cylinder 86, and one end of the reinforced support hydraulic cylinder 86 is provided with a support foot plate 87; the supporting foot plate 87 is used for improving the stability of the auxiliary supporting frame 84;

the lifting steering mechanism 3 can realize the height lifting adjustment and the position rotation adjustment of the telescopic boom beam 6, the lifting moving mechanism 5 can realize the lifting and moving of the self-adjusting safety impact hanger 1, and the auxiliary lifting moving frame 8 can support two ends of the telescopic boom beam 6 to form a portal frame form, so that the device has the flexibility of a crane and the stability of the portal frame.

The difference between the embodiment 2 and the embodiment 1 is that the device has the stability of a gantry crane, is safe enough, and has the flexibility of a crane, and the device can be directly folded on the action carrier 2 after the hoisting and dismantling work is completed, so that the device does not need to be gradually dismantled, and is more convenient.

Example 3:

The second auxiliary hanging bracket 7 comprises an auxiliary frame inserted quick connector 71, an adjustable supporting trolley 72, an auxiliary frame lifting rope 73 and an auxiliary electric hoist 74, the structure of the auxiliary frame inserted quick connector 71 is the same as that of the inserted quick connector 171, the upper end of the auxiliary frame inserted quick connector 71 is connected with the auxiliary electric hoist 74 through the auxiliary frame lifting rope 73, and the auxiliary electric hoist 74 is fixedly arranged on one side of the telescopic boom beam 6;

the bottom of the adjustable supporting trolley 72 is in sliding fit with the top of the telescopic boom beam 6, the adjustable supporting trolley 72 comprises a supporting pulley 721, a power wheel 722 and a transverse adjusting motor 723, the supporting pulley 721 is arranged on the front side of the adjustable supporting trolley 72, a subframe lifting rope 73 is erected on the supporting pulley 721, the transverse adjusting motor 723 is fixedly arranged on the adjustable supporting trolley 72, the output end of the transverse adjusting motor 723 is connected with the power wheel 722, and the outer wall of the power wheel 722 is in rolling connection with the outer wall of the telescopic boom beam 6;

the structure of the first auxiliary hanging bracket 4 is the same as that of the second auxiliary hanging bracket 7, and the first auxiliary hanging bracket 4 is arranged on one side of the lifting arm beam 6 far away from one end of the second auxiliary hanging bracket 7;

first pair gallows 4 and the vice gallows 7 of second can enough be connected with the both sides that turn to roof 11 respectively, form and lift 5 combined action with lifting, lift the section of jurisdiction, improve and hang the stability of drawing the in-process, can be again when the top section of jurisdiction of burden ring is hung and is torn open, support temporarily to the adjacent section of jurisdiction of top section of jurisdiction, prevent to collapse, it is safer.

The present embodiment 3 differs from embodiment 1 only in that the structure of the first sub-hanger 4 and the second sub-hanger 7 are added, so that the common lifting with the lifting and moving mechanism 5 can be achieved, and the segment lifting stability is improved.

Example 4:

The difference between this embodiment 4 and embodiment 1 is that the safety flexibility of hanging and dismantling, the stability and flexibility of the whole equipment, and the stability of hanging and dismantling are improved.

s1, moving the carrier 2 to one side of the well mouth of the shield tunnel shaft, then starting to unfold the equipment, starting the lifting and steering mechanism 3, driving the lifting and steering motor 33 to rotate by driving the lifting hydraulic cylinder 31, enabling the lifting and retracting arm beam 6 to rotate and move transversely to the top of the shield tunnel shaft, then extending the lifting and retracting arm beam 6, and assisting the lifting and moving frame 8 to start after the front end extends to the other side of the shield tunnel shaft;

the auxiliary frame rotating motor 85 drives the rotating seat 81 to enable the auxiliary supporting frame 84 to be turned to the bottom of the telescopic boom beam 6, then the auxiliary lifting hydraulic cylinder 82 extends to enable the supporting wheel 83 to be propped against the ground, then the lifting hydraulic cylinder 31 and the auxiliary lifting hydraulic cylinder 82 are started to extend simultaneously to adjust and lift the telescopic boom beam 6 to a proper height, and therefore the equipment is unfolded;

s2, initially clamping a top segment of the negative ring, moving a self-adjusting safety impact hanger 1 hung at the lower end of a main electric hoist 51 to a position corresponding to the top segment of the negative ring through the movement of a moving trolley 52 on a telescopic boom beam 6, enabling a hanger bottom plate 15 to reach the top of the top segment, extending a main clamp hydraulic cylinder 163, pushing the lower end of a clamping arm frame 161 to hook towards the bottom of the top segment, enabling a lower clamp plate 162 at the lower end of the clamping arm frame 161 to act together with the hanger bottom plate 15 to clamp and fasten the open end of the top segment, and completing initial clamping and fixing;

s3, pulling the top segment of the negative ring, manually removing the bolts connected between the top segment of the negative ring and other segments by a wrench, manually grasping the segment quick connector 17, inserting the plug-in quick connector 171 into the threaded hole or the segment hoisting hole of the top segment, starting the tightness control adjusting motor 1712, driving the thread adjusting rod 1718 to rotate by the tightness control adjusting motor 1712 through the transmission flexible shaft 1714, pushing the thread pushing and pulling cylinder 1717 towards the direction of the fixed sleeve 1715, leading the hinged 2 short rods 17161 to be forced to arch up, increasing the diameter range, if the plug-in quick connector 171 is inserted into the threaded hole of the segment, leading the arched short rod 17161 to be blocked at the other port of the threaded hole, being unable to be pulled out, achieving quick connection, if the plug-in quick connector 171 is inserted into the segment hoisting hole, leading the arched short rods 17161 to be blocked in the segment hoisting hole, the quick connection is achieved, then the worker operates the ratchet tightener 172 to tighten the pull rope 173, and thus, the double fixation is completed;

s4, performing auxiliary fixing on adjacent segments of the top segment, taking down bolts on the front sides of the adjacent segments, then releasing the first auxiliary hanging bracket 4 and the second auxiliary hanging bracket 7 to enable the auxiliary frame lifting rope 73 to be put down to the height of the adjacent segments, then inserting the auxiliary frame plug-in quick connector 71 into a threaded hole of the adjacent segment, and then rolling the auxiliary electric hoist 74 to enable the auxiliary frame plug-in quick connector 71 to be tensioned, so that the adjacent segments can obtain an auxiliary tensioning effect;

s5: the top segment of the negative ring is detached, due to the wedge-shaped structure among the segments, the side edge of the top segment is clamped with other segments, a transverse impact force needs to be applied to gradually hammer, laterally move and draw out the segments, the linear motor bar-shaped stator 141 and the linear motor rotor 142 aligned with the axial position of the negative ring in the impact buffer box 14 are started, the linear motor rotor 142 rapidly and linearly moves in the linear motor bar-shaped stator 141, the end plate 144 can be impacted by pushing the impact block 145 to generate vibration, so that the impact buffer box 14 can directionally vibrate and impact the axial position of the negative ring, therefore, the duct piece can be gradually laterally moved and extracted by the hammer punch, in the process, the mobile carrier 2 can move by itself to drive the lifting arm beam 6 to move, and the self-adjusting type safety impact hanger 1 is assisted to move along the axial position of the negative ring, so that the extraction of the duct piece at the top of the negative ring is promoted;

after the segment is pulled out of a section to expose a gap, the auxiliary clamping mechanism 18 is started, the telescopic hydraulic cylinder 181 pushes the L-shaped frame 182 to move downwards, so that the auxiliary clamping arm rod 184 moves to the bottom height of the segment at the top, then the auxiliary clamping hydraulic cylinder 183 is started to extend, the other end of the auxiliary clamping arm rod 184 is hooked upwards to jack by utilizing the lever principle, the auxiliary clamping arm rod 184 and the hanger bottom plate 15 interact, one side of the segment at the top, which is far away from the main clamping mechanism 16, is clamped in an auxiliary manner, the clamping effect in time is improved, and the clamping stability is improved;

after the top segment is detached, in order to ensure safety, an operator checks the stability of adjacent segments on two sides, when the adjacent segments are sufficiently stable, the auxiliary frame plug-in type quick connector 71 can be directly taken down and collected, and when the adjacent segments are not sufficiently stable, workers temporarily support the adjacent segments through a support to prevent collapse, and then the auxiliary frame plug-in type quick connector 71 is taken down and collected;

after the top segment is drawn out, the main electric hoist 51 winds a rope, the self-adjusting safety impact hanging bracket 1 is lifted upwards, before lifting, the auxiliary frame inserting type quick connectors 71 can be inserted into the lug seats 116 on the two sides of the steering top plate 11, and the first auxiliary hanging bracket 4 and the second auxiliary hanging bracket 7 are respectively connected with the two sides of the steering top plate 11, so that the first auxiliary hanging bracket 4 and the second auxiliary hanging bracket 7 can work together with the lifting moving mechanism 5 to lift the segment, and the stability in the lifting process is improved;

when the top segment under the self-adjusting safety impact hanger 1 is lifted to a height higher than the ground, the moving trolley 52 drives the self-adjusting safety impact hanger 1 to transversely displace to one side of the well head of the shield tunnel shaft, then the main electric hoist 51 releases the rope to enable the lifted top segment to move downwards to the ground, then the main clamping hydraulic cylinder 163 is contracted to enable the clamping arm support 161 to rotate away from the lower part of the top segment, at the moment, the top segment is lifted by the segment quick connector 17 and the auxiliary clamping mechanism 18, because the segment quick connector 17 is hung on the side of the segment, the bottom of the segment can not be blocked, one side of the segment close to the segment quick connector 17 can be firstly released to be inclined to contact with the ground, the segment can be obliquely put down through the expansion of the angle adjusting hydraulic cylinder 121 and the respective control of the 2 main electric hoists 51, then the other side of the segment is gradually put down to the ground, when the segment, an auxiliary clamp hydraulic cylinder 183 of the auxiliary clamp mechanism 18 pulls an auxiliary clamp arm rod 184 to be drawn away from the bottom of the duct piece, and therefore the duct piece at the top is completely dismantled and placed;

s6, when the side segment of the negative ring is removed, referring to the steps S2 and S3, the self-adjusting safety impact hanger 1 is moved to the top of the middle upper segment, then the main electric hoist 51 on one side of the lifting moving mechanism 5 pulls the rope to be wound, the main electric hoist 51 on the other side puts down the rope to be extended, the self-adjusting safety impact hanger 1 is adjusted to be in an inclined state, the inclined angle corresponds to the angle of the middle upper segment, referring to the step S5, the linear motor bar stator 141 and the linear motor rotor 142 which are aligned with the axial position of the negative ring in the impact buffer box 14 are started, or the linear motor bar stator 141 and the linear motor rotor 142 which are aligned with the circumferential position of the negative ring in the impact buffer box 14 are started, the hammer impact directional vibration acting force in the axial direction of the negative ring or the circumferential direction of the negative ring is applied to the middle upper side, so that the middle upper segment is moved laterally and extracted, then hoisting to the ground, and slightly putting down and placing the upper side duct piece according to the step S5;

when the middle-lower side duct piece is dismounted, because a part of the lower end of the middle-lower side duct piece is positioned at the lower side of the track, after the middle-lower side duct piece is clamped and fixed by the self-adjusting type safety impact hanging bracket 1, the angle adjusting hydraulic cylinder 121 is started, the lower end of the middle-lower side duct piece is pulled and lifted towards one side far away from the track by utilizing the small-amplitude rotation angle of the clamped middle-lower side duct piece driven by the stretching of the angle adjusting hydraulic cylinder 121, and then the middle-lower side duct piece can be safely dismounted;

s7, removing the bottom edge pipe piece of the negative ring, moving the self-adjusting safety impact hanger 1 to the top of the bottom edge pipe piece according to the steps S2 and S3, wherein in the process, the self-adjusting safety impact hanger is connected with the front side of the bottom edge pipe piece through the pipe piece quick connector 17, then the sub-frame plug-in quick connectors 71 of the first sub hanger 4 and the second sub hanger 7 are connected with the left side and the right side of the bottom edge pipe piece, then the bottom edge pipe piece is lifted away from the bottom, then the main clamping mechanism 16 and the sub clamping mechanism 18 are started to clamp the bottom edge pipe piece, and then the bottom edge pipe piece is lifted to the ground, so that the removal of a ring is completed;

and S8, the mobile carrier 2 drives the whole equipment to move along the axial direction of the negative ring to the position of the next ring, the next ring is removed, and the operation is repeated according to the steps until the lifting and the removal of all negative ring segments are completed.

The working principle or the using method of the invention is as follows: firstly, moving a carrier 2 to one side of a well mouth of a shield tunnel shaft, then starting to unfold the equipment, starting a lifting and steering mechanism 3, driving a lifting hydraulic cylinder 31 to rotate by a main beam steering motor 33, enabling a lifting and contracting arm beam 6 to rotate and transversely move to the top of the shield tunnel shaft, then extending the lifting and contracting arm beam 6, and starting an auxiliary lifting and moving frame 8 after the front end of the lifting and contracting arm beam extends to the other side of the shield tunnel shaft;

then, initially clamping a top segment of the negative ring, moving a self-adjusting safety impact hanger 1 hung at the lower end of a main electric hoist 51 to a position corresponding to the top segment of the negative ring through the movement of a moving trolley 52 on a telescopic boom beam 6, enabling a hanger bottom plate 15 to reach the top of the top segment, extending a main clamp hydraulic cylinder 163, pushing the lower end of a clamping arm frame 161 to hook towards the bottom of the top segment, enabling a lower clamp plate 162 at the lower end of the clamping arm frame 161 to act together with the hanger bottom plate 15, clamping and fastening an open end of the top segment, and completing initial clamping and fixing;

then, pulling the top segment of the negative ring, manually detaching and pulling out the bolts connected between the top segment of the negative ring and other segments by a worker with a tool such as a wrench, manually grasping the segment quick connector 17, inserting the plug-in quick connector 171 into the threaded hole or the segment hoisting hole of the top segment, then starting the tightness control adjusting motor 1712, driving the thread adjusting rod 1718 to rotate by the tightness control adjusting motor 1712 through the transmission flexible shaft 1714, pushing the thread pushing and pulling cylinder 1717 towards the direction of the fixing sleeve 1715, so that the hinged 2 short rods 17161 are forced to be arched, the diameter range is increased, if the plug-in quick connector 171 is inserted into the threaded hole of the segment, the arched short rod 17161 can be clamped at the other port of the threaded hole, can not be pulled out, and can achieve quick connection, if the plug-in quick connector 171 is inserted into the hoisting hole of the segment, the arched short rod 17161 can be clamped in the segment hoisting hole, the quick connection is achieved, then the worker operates the ratchet tightener 172 to tighten the pull rope 173, and thus, the double fixation is completed;

next, auxiliary fixing of adjacent segments of the segment at the top is carried out, the front side bolt of the adjacent segment is taken down, then the first auxiliary hanger 4 and the second auxiliary hanger 7 are released, the auxiliary frame lifting rope 73 is put down to the height of the adjacent segment, the auxiliary frame plug-in quick connector 71 is inserted into the threaded hole of the adjacent segment, and then the auxiliary electric hoist 74 is wound, so that the auxiliary frame plug-in quick connector 71 is tensioned, and the adjacent segment is tensioned in an auxiliary manner;

then, the top segment of the negative ring is detached, due to the wedge-shaped structure among the segments, the side edge of the top segment is clamped with other segments, a transverse impact force needs to be applied to gradually hammer, impact, laterally move and draw out the segments, the linear motor bar-shaped stator 141 and the linear motor rotor 142 aligned with the axial position of the negative ring in the impact buffer box 14 are started, the linear motor rotor 142 rapidly and linearly moves in the linear motor bar-shaped stator 141, the end plate 144 can be impacted by pushing the impact block 145 to generate vibration, so that the impact buffer box 14 can directionally vibrate and impact the axial position of the negative ring, therefore, the duct piece can be gradually laterally moved and extracted by the hammer punch, in the process, the mobile carrier 2 can move by itself to drive the lifting arm beam 6 to move, and the self-adjusting type safety impact hanger 1 is assisted to move along the axial position of the negative ring, so that the extraction of the duct piece at the top of the negative ring is promoted;

then, the side segment of the negative ring is removed, wherein when the middle and upper side segments are removed, the self-adjusting safety impact hanger 1 is moved to the top of the middle and upper side segments according to the method, then the main electric hoist 51 on one side of the lifting and moving mechanism 5 pulls the rope to be wound, the main electric hoist 51 on the other side puts the rope to be extended, the self-adjusting safety impact hanger 1 is adjusted to an inclined state, the inclined angle corresponds to the angle of the middle and upper side segments, then according to the method, the linear motor bar-shaped stator 141 and the linear motor rotor 142 which are aligned with the axial position of the negative ring in the impact buffer box 14 are started, or the linear motor bar-shaped stator 141 and the linear motor rotor 142 which are aligned with the circumferential position of the negative ring are started, the hammer impact directional vibration acting force in the axial direction of the negative ring or the circumferential direction of the negative ring is applied to the middle and upper side segments, so that the, then hoisting to the ground, and gently putting down and placing the duct piece on the upper side according to the method;

finally, the bottom side duct piece of the negative ring is removed, and according to the method, the self-adjusting type safety impact hanger 1 is moved to the top of the bottom side duct piece, except that in the process, the self-adjusting type safety impact hanger is connected with the front side of the bottom side duct piece through the duct piece quick connector 17, then the auxiliary frame inserting type quick connectors 71 of the first auxiliary hanger 4 and the second auxiliary hanger 7 are connected with the left side and the right side of the bottom side duct piece, then the bottom side duct piece is lifted away from the bottom, then the main clamping mechanism 16 and the auxiliary clamping mechanism 18 are started to clamp the bottom side duct piece, and then the bottom side duct piece is lifted to the ground, so that the removal of one;

after one ring is removed, the action carrier 2 drives the whole equipment to move along the axial direction of the negative ring to the next ring position, the next ring is removed, and the operation is repeated according to the method until the lifting and the removal of all negative ring segments are completed.

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.

Claims

1. The utility model provides a device is demolishd to section of jurisdiction for city shield tunnel, includes: the moving carrier (2) is characterized in that the moving carrier (2) is connected with one end of a lifting and contracting arm beam (6) through a lifting and steering mechanism (3), the other end of the lifting and contracting arm beam (6) is provided with an auxiliary lifting and moving frame (8), the lifting and contracting arm beam (6) is in sliding fit with a lifting and moving mechanism (5), the lower end of the lifting and moving mechanism (5) is provided with a self-adjusting safety impact hanging bracket (1), and the tops of the two ends of the lifting and contracting arm beam (6) are respectively provided with a first auxiliary hanging bracket (4) and a second auxiliary hanging bracket (7).

2. The segment removal device for the urban shield tunnel according to claim 1, wherein: the self-adjusting safe impact hanger (1) comprises a steering top plate (11), a duct piece quick connector (17) is arranged on the outer wall of the steering top plate (11), a middle support plate (13) is connected to the lower portion of the steering top plate (11) through an angle adjusting mechanism (12), a hanger bottom plate (15) is connected to the bottom of the middle support plate (13) through an impact buffer box (14), and a main clamping mechanism (16) and an auxiliary clamping mechanism (18) are arranged on two sides of the middle support plate (13) respectively.

3. The segment removal device for the urban shield tunnel according to claim 2, wherein: the steering top plate (11) comprises an upper plate (114) and a lower plate (115), the top of the lower plate (115) is rotatably connected with the upper plate (114), the middle of the top of the lower plate (115) is connected with a steering motor (111) through a steering gear (112) and a driving gear (113), and the steering motor (111) is fixed on the top of the upper plate (114);

ear seats (116) are respectively arranged on two sides of the upper plate (114).

4. The segment removal device for the urban shield tunnel according to claim 3, wherein: the adjusting mechanism (12) comprises two angle adjusting hydraulic cylinders (121), two angle adjusting hydraulic cylinders (121) are arranged, two angle adjusting hydraulic cylinders are arranged in each group in a crossed mode, and the upper ends and the lower ends of the two angle adjusting hydraulic cylinders (121) correspond to the four corners of the lower plate (115) and the middle support plate (13) respectively.

5. The segment removal device for the urban shield tunnel according to claim 2, wherein: the upper side and the lower side of the impact buffer box (14) are fixedly connected with the bottom of the middle support plate (13) and the top of the hanger base plate (15) respectively, the impact buffer box (14) comprises a plurality of groups of linear motor bar-shaped stators (141) and linear motor rotors (142) which are matched electromagnetically, the linear motor bar-shaped stators (141) and the linear motor rotors (142) are distributed in an annular array mode by taking the circle center of the impact buffer box (14) as a central point, two ends of the linear motor rotors (142) are connected with impact blocks (145) through compression springs (143) respectively, and two ends of the linear motor bar-shaped stators (141) are provided with end plates (144) respectively.

6. The segment removal device for the urban shield tunnel according to claim 2, wherein: the main clamping mechanism (16) comprises two clamping arm supports (161) and a main clamping hydraulic cylinder (163), the clamping arm supports (161) are symmetrically arranged on two sides of the middle support plate (13), the middle part of each clamping arm support (161) is hinged with the side wall of the middle support plate (13), the upper end of each clamping arm support (161) is hinged with one end of the main clamping hydraulic cylinder (163), and the other end of each main clamping hydraulic cylinder (163) is hinged with the side wall of the middle support plate (13);

the auxiliary clamping mechanism (18) comprises a telescopic hydraulic cylinder (181), an L-shaped frame (182), an auxiliary clamping hydraulic cylinder (183) and an auxiliary clamping arm rod (184), the middle of the auxiliary clamping arm rod (184) is hinged with the lower end of the L-shaped frame (182), one end, away from the hanger bottom plate (15), of the auxiliary clamping arm rod (184) is hinged with one end of the auxiliary clamping hydraulic cylinder (183), the other end of the auxiliary clamping hydraulic cylinder (183) is hinged with the side end of the L-shaped frame (182), and the top of the L-shaped frame (182) is connected with the lower end of the telescopic hydraulic cylinder (181).

7. The segment removal device for the urban shield tunnel according to claim 2, wherein: the segment quick connector (17) comprises an insertion type quick connector (171), the insertion type quick connector (171) comprises a steel wire braided rope sleeve (1713), two ends of the steel wire braided rope sleeve (1713) are respectively connected with one side of a frame-shaped frame (1711) and one end of a fixed sleeve (1715), the other end of the fixed sleeve (1715) is connected with one end of a thread push-pull barrel (1717) through a deformation frame (1716), a transmission flexible shaft (1714) is arranged between the steel wire braided rope sleeve (1713) and the fixed sleeve (1715) in a penetrating mode, one end of the transmission flexible shaft (1714) is connected with a tightness control adjusting motor (1712), and the other end of the transmission flexible shaft (1714) is connected with a thread adjusting rod (1718) arranged in the thread push-pull barrel (1717) in a penetrating mode;

the deformation frame (1716) comprises a plurality of groups of short rods (17161), each group of short rods (17161) is hinged with two short rods, and two ends of each group of short rods (17161) are hinged with the end parts of the fixed sleeve (1715) and the thread push-pull barrel (1717) respectively.

8. The segment removal device for the urban shield tunnel according to claim 1, wherein: the lifting steering mechanism (3) comprises a lifting hydraulic cylinder (31), a toothed ring (32), a main beam steering motor (33) and a main beam steering gear (34);

the hoisting moving mechanism (5) comprises a moving trolley (52) and two main electric hoists (51) symmetrically arranged on two sides of the moving trolley (52);

the auxiliary lifting moving frame (8) comprises an auxiliary lifting hydraulic cylinder (82) and a supporting wheel (83).

9. The segment removal device for the urban shield tunnel according to claim 1, wherein: the second auxiliary hanging bracket (7) comprises an auxiliary frame plug-in type quick connector (71), an adjustable supporting trolley (72) and an auxiliary electric hoist (74), the structure of the auxiliary frame plug-in type quick connector (71) is the same as that of the plug-in type quick connector (171), the auxiliary frame plug-in type quick connector (71) is connected with the auxiliary electric hoist (74), and the auxiliary electric hoist (74) is fixedly installed on one side of one end of the lifting arm beam (6);

the adjustable supporting trolley (72) comprises a supporting pulley (721), and an auxiliary frame lifting rope (73) is erected on the supporting pulley (721);

the structure of the first auxiliary hanging bracket (4) is the same as that of the second auxiliary hanging bracket (7).

10. The removing method of the segment removing device for the urban shield tunnel according to any one of claims 1 to 9, comprising the steps of:

s2, preliminarily clamping and fastening the top segment of the negative ring by using a main clamping mechanism (16);

s3, tensioning the top segment by using the segment quick connector (17) to complete double fastening;

s4, utilizing a first auxiliary hanging bracket (4) and a second auxiliary hanging bracket (7) to assist in tensioning adjacent segments of the top segment;

s5, gradually hammering, punching, laterally moving and extracting the top segment of the negative ring by using an impact buffer box (14);

the auxiliary clamping mechanism (18) is used for assisting in clamping the duct piece in the dismounting process;

then, the first auxiliary hanging bracket (4) and the second auxiliary hanging bracket (7) are matched with a lifting moving mechanism (5) to lift the duct piece;

after the top segment is lifted to the ground height, the top segment is safely placed by using a self-adjusting type safe impact hanger (1) to finish the detachment of the top segment;

s6, removing the duct piece on the upper side of the negative ring, adjusting the self-adjusting type safe impact hanger (1) to an inclined state, clamping and detaching the duct piece, and then lifting the duct piece to the ground for safe placement;

the middle-lower side duct piece is removed, and the middle-lower side duct piece is pulled out by using an angle adjusting hydraulic cylinder (121) and then is lifted, pulled and removed;

s7, beginning to remove the bottom edge pipe piece of the negative ring, firstly, matching and lifting the pipe piece through the pipe piece quick connector (17), the first auxiliary hanging bracket (4) and the second auxiliary hanging bracket (7), then, clamping the bottom edge pipe piece, and then, lifting and removing the pipe piece to the ground to finish the removal of one ring;