CN110608057A - A device for removing segments in a shield tunnel and its application method - Google Patents

Abstract

The invention discloses a device for dismantling segments in a shield tunnel and a method for using the device, which includes a traveling carrier, a rotating mechanism, a pitching mechanism, a four-bar mechanism and a segment clamping mechanism; the rotating mechanism is installed on On the walking carrier, the four-bar mechanism is installed on the main telescopic action arm of the pitch mechanism, and the segment clamping mechanism is installed on the top support of the four-bar mechanism. The work is to send the clamping mechanism of the main tube to the designated elevation with a certain distance of the segment to be dismantled through the pitching mechanism, and at the same time further adjust the position of the clamping mechanism through the four-bar mechanism, so that the buckle bolt on the target segment enters the tube the segment clamping mechanism, and use the segment clamping mechanism to fix it firmly; finally, place the removed segment stably on the proper position by operating the rotating mechanism, pitching mechanism, and four-bar mechanism; remove the lower half ring tube At the same time, the pitching mechanism operates as a hoisting device at this time.

Description

A device for removing segments in a shield tunnel and its application method

technical field

The invention belongs to the technical field of tunnel construction devices, and in particular relates to a device for removing segments in a shield tunnel and an application method thereof.

Background technique

In tunnel construction, the installation of shield excavation segments is a continuous technical process. The use and development of the device for removing segments in shield tunnels is based on a new type of segment removal after the overall construction of the tunnel and excavation to build the main body of the station. method of tunnel construction. When the segment is installed, based on the segment installation device in the shield machine, the dismantling process of the segment in the tunnel is a special-purpose solution, and there is no precedent in tunnel construction.

Therefore, there is an urgent need for a device that can safely and efficiently remove segments in tunnels.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a device for dismantling segments in a shield tunnel and a method for using the same.

The present invention is achieved through the following technical solutions:

A device for removing segments in a shield tunnel, including a traveling carrier, a rotating mechanism, a pitching mechanism, a four-bar mechanism, and a segment clamping mechanism;

The rotating mechanism is installed on the walking carrier, and the tilting mechanism is installed on the turntable of the rotating mechanism. The tilting mechanism includes a main telescopic action arm and a lifting oil cylinder, and the bottom end of the main telescopic action arm is installed through a rotating shaft. On the bracket, the bracket is fixed with the turntable of the rotating mechanism, the bottom end of the lifting cylinder is rotatably mounted on the turntable, the top of the lifting cylinder is hinged on the outer wall of the main telescopic arm, and the main telescopic action is controlled by the lifting cylinder The lifting angle of the arm is controlled by the main telescopic action arm and the height limit is adopted to prevent the arm from breaking out of the arm cavity;

The four-bar mechanism is installed on the main telescopic action arm of the pitch mechanism, and the four-bar mechanism includes a drive cylinder, a triangular turntable, a connecting rod and a top support, and the tail end of the drive cylinder is hinged on the outer arm of the main telescopic action arm. The top of the driving cylinder is hinged with the first corner of the triangular turntable, the second corner of the triangular turntable is hinged with one end of the connecting rod, the third corner of the triangular turntable is hinged with the inner telescopic arm of the main telescopic action arm, and the other end of the connecting rod is hinged at the top On the support, the bottom end of the top support is also hinged with the top end of the inner telescopic arm of the main telescopic action arm;

The segment clamping mechanism is installed on the top support of the four-bar mechanism, and the segment clamping mechanism includes a weight seat, a button head, a button head oil cylinder, a vacuum suction cup, and a vacuum suction cup driving cylinder; the weight seat and the four-bar mechanism The top support is fixed, the buckle head cylinder is installed vertically on the weight base, the buckle head is fixed on the action end of the buckle head cylinder, and the buckle head is driven by the buckle head oil cylinder to adjust its protruding height. The buckle head is used to connect with the tunnel segment The buckle head bolts are aligned and connected; the vacuum suction cup drive cylinders are installed vertically on the weight base, and a vacuum suction cup is respectively installed on the top of each vacuum suction cup drive cylinder. There are multiple vacuum suction cup drive cylinders distributed around the buckle head.

In the above technical solution, the walking carrier can walk on the track, and the walking carrier is provided with hydraulic support legs; the number of hydraulic support legs is 8, and 4 are arranged on each side of the walking carrier; , can stably position the walking carrier.

In the above technical solution, the rotating mechanism includes a turntable, a central rotating shaft, and a driving assembly for driving the central shaft to rotate. The drive is that the central rotating shaft drives the turntable to rotate; the driving assembly includes a hydraulic motor, a reducer and a gear assembly, the output shaft of the hydraulic motor is connected to the input shaft of the reducer, and the output shaft of the reducer is transmitted through the gear assembly and the central rotating shaft.

In the above technical solution, the number of the lifting cylinders is two, which are respectively arranged on both sides of the main telescopic action arm.

In the above technical solution, the top support is a flat plate, and the bottom surface of the flat plate has a connecting flange plate, the flange plate is an inverted triangle, the connecting rod is hinged at the side corner of the flange plate, and the main telescopic action The top end of the inner telescopic arm of the arm is hinged to the bottom corner of the flange plate.

In the above technical solution, the vacuum suction cup drives the oil cylinders and is arranged around the buckle head in a rectangular shape.

In the above technical scheme, the quantity of the buckle head and the buckle head oil cylinder is 2, arranged in rows.

In the above technical solution, the structure of the button head is as follows: two claws are arranged on the button head, and the gap between the two claws is slightly larger than the diameter of the button head bolt, but smaller than the diameter of the end of the button head bolt. So that the buckle bolt can enter the gap between the two jaws, and the ends of the buckle bolt enter the bottom space of the two jaws, and the inner wall of the two jaws is also provided with a screw for receiving the end of the buckle bolt cavity of the head.

In the above technical solution, the weight base is provided with a connecting portion for connecting the suspension rope.

The method of using the device for removing segments in a shield tunnel is as follows:

Before the segments are removed, stabilize the traveling carrier first, then adjust the rotation angle of the rotating mechanism according to the segment removal sequence, so that the segment clamping mechanism faces the target segment, and then send the main segment clamping mechanism to the At the specified elevation of a certain distance from the segment to be disassembled, the position of the segment clamping mechanism is further adjusted through the driving cylinder of the four-bar mechanism, so that the buckle head bolt on the target segment enters the buckle head, and then the buckle head cylinder shrinks to make the buckle head bolt The end snaps into the cavity of the buckle head, and at the same time, the vacuum suction cup drives the oil cylinder to push out, so that the vacuum suction cup withstands the segment, so as to lock the segment firmly; finally, the dismantled The segment is placed stably in the proper position;

Before dismantling the lower half-ring segments, because the segments on both sides are under the rails, the rails need to be removed to remove the segments. device to operate.

Advantage of the present invention and beneficial effect are:

1. Compared with the method of removing the segment manually by setting up a bracket, the method of removing the segment in the present invention is safer and can reduce the incidence of accidents.

2. The invention has multiple ways to dismantle the segment, the segment clamping mechanism can rotate within 210 degrees for removing the top segment, and the segment clamping mechanism can be used to lift the lower segment, which optimizes the construction procedure.

3. The present invention can be used as a support structure when the segment is removed, reducing the large vibration when the segment is removed, so as to prevent disturbance to the adjacent segment. It can effectively prevent the desalination of the segment and the soil inside the tunnel without dismantling.

4. The present invention is based on a new tunnel construction method, which belongs to the special customized equipment required by the new construction method, and there is no precedent in its engineering application.

Description of drawings

Fig. 1 is a structural schematic diagram of a device for removing segments in a shield tunnel according to the present invention.

Fig. 2 is a schematic rear view of the device for segment removal in a shield tunnel according to the present invention.

Fig. 3 is a schematic diagram of the working state of the device for removing segments in a shield tunnel according to the present invention (locking segments).

Fig. 4 is a schematic diagram of the working state of the device for dismantling segments in a shield tunnel according to the present invention (segment lowering).

Fig. 5 is a structural schematic diagram of the buckle in the device for removing segments in a shield tunnel according to the present invention.

Fig. 6 is a top view of the buckle in the device for removing segments in a shield tunnel according to the present invention.

Fig. 7 is a top view of the segment clamping mechanism in the device for removing segments in a shield tunnel according to the present invention.

Fig. 8 is an enlarged structural view of the segment clamping mechanism in the device for removing segments in a shield tunnel according to the present invention when the segments are locked.

For those skilled in the art, other related drawings can be obtained according to the above drawings without any creative effort.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution of the present invention will be further described below in conjunction with specific examples.

Referring to the accompanying drawings, a device for removing segments in a shield tunnel includes a traveling carrier 1 , a rotating mechanism 2 , a pitching mechanism 3 , a four-bar mechanism 4 and a segment clamping mechanism 5 .

The walking carrier 1 can walk on the track, and the walking carrier is provided with hydraulic support legs 1-1, the number of hydraulic support legs is preferably 8, and 4 are respectively arranged on each side of the walking carrier; after the hydraulic support legs fall, It can stably position the walking carrier.

The rotating mechanism 2 is installed on the walking carrier. The rotating mechanism includes a turntable 2-1, a central rotating shaft, and a drive assembly for driving the central shaft to rotate. At the top of the rotating shaft, when the central rotating shaft is driven, the central rotating shaft drives the turntable to rotate. Further, the drive assembly includes a hydraulic motor, a reducer and a gear assembly, the output shaft of the hydraulic motor is connected to the input shaft of the reducer, and the output shaft of the reducer is transmitted to the central shaft through the gear assembly.

The pitch mechanism 3 is installed on the turntable 2-1 of the rotary mechanism, the pitch mechanism includes a main telescopic action arm 3-1 and a lifting cylinder 3-2, and the bottom end of the main telescopic action arm 3-1 Installed on the bracket 3-3 through the rotating shaft, the bracket 3-3 is fixed with the turntable of the rotating mechanism, the bottom end of the lift cylinder 3-2 is rotatably installed on the turntable, and the top of the lift cylinder 3-2 is hinged on the main On the outer wall of the telescopic action arm 3-1, the lifting (pitch) angle of the main telescopic action arm 3-1 is controlled by the lifting cylinder 3-2, and the elevation is controlled by the main telescopic action arm and an elevation limit is adopted to prevent the boom from out of the arm cavity. Furthermore, the number of the lifting cylinders 3-2 is preferably two, which are respectively arranged on both sides of the main telescopic action arm, so that the support for the main telescopic action arm is more stable.

The four-bar mechanism 4 is installed on the main telescopic action arm 3-1 of the pitch mechanism. Specifically, the four-bar mechanism includes a drive cylinder 4-1, a triangular turntable 4-2, a connecting rod 4-3 and a top support 4-4, the tail end of the driving cylinder 4-1 is hinged on the outer arm of the main telescopic action arm 3-1, the top of the driving cylinder 4-1 is hinged with the first corner of the triangular turntable 4-2, the second of the triangular turntable The angle is hinged with one end of the connecting rod 4-3, the third angle of the triangular turntable is hinged with the inner telescopic arm of the main telescopic action arm 3-1, and the other end of the connecting rod 4-3 is hinged on the top support 4-4, and the top support The bottom end of the seat is also hinged with the top end of the inner telescopic arm of the main telescopic action arm. Further, the top support 4-4 is a flat plate, and the bottom surface of the flat plate has a connecting flange plate, the flange plate is an inverted triangle, the connecting rod is hinged at the side corner of the flange plate, and the main telescopic The top of the inner telescopic arm of the action arm is hinged at the bottom corner of the flange plate.

The segment clamping mechanism 5 is installed on the top support 4-4 of the four-bar mechanism. Specifically, the segment clamping mechanism includes a weight base 5-1, a buckle head 5-2, and a buckle head oil cylinder 5-3 , vacuum sucker 5-4, vacuum sucker drive oil cylinder 5-5; The top support 4-4 of described weight base and four-bar mechanism is fixed, and the buckle oil cylinder is vertically installed on the weight base 5-1, and buckle head 5- 2. It is fixed on the action end of the buckle head cylinder 5-3, and the buckle head is driven by the buckle head oil cylinder to adjust its protruding height. The buckle head is used for alignment connection with the buckle head bolts on the tunnel segment; Installed on the heavy base, a vacuum suction cup is installed on the top of each vacuum suction cup driving cylinder, the number of vacuum suction cup driving cylinders is 4-6, distributed around the buckle head 5-2, the vacuum suction cup driving cylinders are arranged in a rectangular shape on the buckle Around the head, further, the quantity of the buckle head 5-2 and the buckle head oil cylinder 5-3 is preferably 2 (Fig. 7), arranged in rows; further, referring to accompanying drawings 5-6, the buckle head The structure of 5-2 is: two jaws 5-21 are arranged on the buckle head, and the gap a between the two jaws is slightly larger than the diameter of the buckle head bolt 6-1, but smaller than the end of the buckle head bolt 6-1 diameter, so that the buckle bolt 6-1 can enter the gap between the two jaws, and the end of the buckle bolt 6-1 enters the bottom space of the two jaws, on the inner wall of the two jaws A cavity 5-22 for accommodating the end of the buckle-head bolt 6-1 is also provided so as to lock the position of the end of the buckle-head bolt 6-1 (FIG. 8).

The method of using this device is as follows:

Before the segment 6 is removed, first stabilize the traveling carrier 1 with the hydraulic support legs 1-1, then adjust the rotation angle of the rotating mechanism according to the removal sequence of the segment, so that the segment clamping mechanism faces the target segment, and then through the pitching The mechanism sends the main pipe clamping mechanism 5 to the designated elevation of a certain distance from the segment to be disassembled, and at the same time further adjusts the position of the segment clamping mechanism 5 through the driving cylinder 4-1 of the four-bar mechanism, so that the buckle head bolt on the target segment 6-1 enters between the two jaws 5-21 of the buckle head 5-2, and then the buckle head oil cylinder 5-3 shrinks, so that the end of the buckle head bolt 6-1 snaps into the cavity 5-22, and the vacuum suction cup Drive the oil cylinder 5-5 to push out, so that the vacuum suction cup 5-4 withstands the segment, thereby firmly locking the segment; finally, the removed segment is stabilized by operating the rotating mechanism 2, the tilting mechanism 3, and the four-bar mechanism 4. placed in a suitable position.

Furthermore, before removing the lower half-ring segment, because the segments on both sides are under the track, the track needs to be removed to remove the segment. Operate as a lifting device, and the weight base 5-1 is provided with a connecting portion for connecting a suspension rope.

For ease of description, spatial relative terms such as "upper", "lower", "left", "right", etc. are used in the embodiments to describe the position of one element or feature shown in the figures relative to another element or feature. relation. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative specifications used herein interpreted accordingly.

Moreover, relative terms such as "first" and "second", etc. are only used to distinguish one from another element having the same name, and do not necessarily require or imply any such actual existence between these elements. relationship or sequence.

The present invention has been described as an example above, and it should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacements that can be made by those skilled in the art without creative labor all fall within the scope of this invention. protection scope of the invention.

Claims (10)

1. A device for removing segments in a shield tunnel, characterized in that: it includes a walking carrier, a rotating mechanism, a pitching mechanism, a four-bar mechanism and a segment clamping mechanism; The rotating mechanism is installed on the walking carrier, and the tilting mechanism is installed on the turntable of the rotating mechanism. The tilting mechanism includes a main telescopic action arm and a lifting oil cylinder, and the bottom end of the main telescopic action arm is installed through a rotating shaft. On the bracket, the bracket is fixed with the turntable of the rotating mechanism, the bottom end of the lifting cylinder is rotatably mounted on the turntable, the top of the lifting cylinder is hinged on the outer wall of the main telescopic arm, and the main telescopic action is controlled by the lifting cylinder The lifting angle of the arm is controlled by the main telescopic action arm and the height limit is adopted to prevent the arm from breaking out of the arm cavity; The four-bar mechanism is installed on the main telescopic action arm of the pitch mechanism, and the four-bar mechanism includes a drive cylinder, a triangular turntable, a connecting rod and a top support, and the tail end of the drive cylinder is hinged on the outer arm of the main telescopic action arm. The top of the driving cylinder is hinged with the first corner of the triangular turntable, the second corner of the triangular turntable is hinged with one end of the connecting rod, the third corner of the triangular turntable is hinged with the inner telescopic arm of the main telescopic action arm, and the other end of the connecting rod is hinged at the top On the support, the bottom end of the top support is also hinged with the top end of the inner telescopic arm of the main telescopic action arm; The segment clamping mechanism is installed on the top support of the four-bar mechanism, and the segment clamping mechanism includes a weight seat, a button head, a button head oil cylinder, a vacuum suction cup, and a vacuum suction cup driving cylinder; the weight seat and the four-bar mechanism The top support is fixed, the buckle head cylinder is installed vertically on the weight base, the buckle head is fixed on the action end of the buckle head cylinder, and the buckle head is driven by the buckle head oil cylinder to adjust its protruding height. The buckle head is used to connect with the tunnel segment The buckle head bolts are aligned and connected; the vacuum suction cup drive cylinders are installed vertically on the weight base, and a vacuum suction cup is respectively installed on the top of each vacuum suction cup drive cylinder. There are multiple vacuum suction cup drive cylinders distributed around the buckle head. 2. The device for removing segments in a shield tunnel according to claim 1, characterized in that: the walking carrier can walk on rails, and the walking carrier is provided with hydraulic support legs; the number of hydraulic support legs There are 8, and 4 are arranged on each side of the walking carrier; after the hydraulic support legs fall, the walking carrier can be stably positioned. 3. The device for removing segments in a shield tunnel according to claim 1, characterized in that: the rotating mechanism includes a turntable, a central rotating shaft, and a drive assembly for driving the central shaft to rotate, and the central rotating shaft rotates vertically and is mounted on a walking On the disc at the end of the carrier, the turntable is fixedly installed on the top of the central shaft. When the shaft is driven, the central shaft drives the turntable to rotate; the drive assembly includes a hydraulic motor, a reducer and a gear assembly, and the output shaft of the hydraulic motor is connected to the input of the reducer. shaft, the output shaft of the reducer is transmitted through the gear assembly and the central shaft. 4. The device for segment removal in a shield tunnel according to claim 1, characterized in that there are two lifting cylinders arranged on both sides of the main telescopic arm respectively. 5. The device for removing segments in a shield tunnel according to claim 1, characterized in that: the top support is a flat plate, and the bottom surface of the flat plate has a connecting flange plate, and the flange plate is an inverted triangle , the connecting rod is hinged at the side corner of the flange plate, and the top end of the inner telescopic arm of the main telescopic action arm is hinged at the bottom corner of the flange plate. 6. The device for removing segments in a shield tunnel according to claim 1, characterized in that: the vacuum suction cup drive cylinders are arranged around the buckle head in a rectangular shape. 7. The device for removing segments in a shield tunnel according to claim 1, characterized in that: the number of buckles and buckle cylinders is two, arranged in rows. 8. The device for removing segments in a shield tunnel according to claim 1, characterized in that: the structure of the buckle head is as follows: two claws are arranged on the buckle head, and the gap between the two claws is The clearance is slightly larger than the diameter of the buckle bolt, but smaller than the diameter of the head of the buckle bolt, so that the buckle bolt can enter the gap between the two jaws, and the end of the buckle bolt can enter the gap between the two jaws. In the bottom space, the inner walls of the two claws are also provided with cavities for accommodating the ends of buckle bolts. 9. The device for removing segments in a shield tunnel according to claim 1, characterized in that: the weight base is provided with a connecting part for connecting a suspension rope. 10. The method for using the device for removing segments in a shield tunnel according to claim 1, characterized in that: Before the segments are removed, stabilize the traveling carrier first, then adjust the rotation angle of the rotating mechanism according to the segment removal sequence, so that the segment clamping mechanism faces the target segment, and then send the main segment clamping mechanism to the At the specified elevation of a certain distance from the segment to be disassembled, the position of the segment clamping mechanism is further adjusted through the driving cylinder of the four-bar mechanism, so that the buckle head bolt on the target segment enters the buckle head, and then the buckle head cylinder shrinks to make the buckle head bolt The end snaps into the cavity of the buckle head, and at the same time, the vacuum suction cup drives the oil cylinder to push out, so that the vacuum suction cup withstands the segment, so as to lock the segment firmly; finally, the dismantled The segment is placed stably in the proper position; Before dismantling the lower half-ring segments, because the segments on both sides are under the rails, the rails need to be removed to remove the segments. device to operate.