Device for removing pipe segments in shield tunnel and method of using the same

Abstract

The present invention discloses a device for removing pipe segments in a shield tunnel and a method for using the device, which includes a walking carrier, a rotating mechanism, a pitch mechanism, a four-bar mechanism and a pipe segment clamping mechanism; the rotating mechanism is installed on the walking carrier, the four-bar mechanism is installed on the main telescopic action arm of the pitch mechanism, and the pipe segment clamping mechanism is installed on the top support of the four-bar mechanism. The working process is to send the main pipe segment clamping mechanism to a specified elevation of a certain distance from the pipe segment to be removed through the pitch mechanism, and at the same time further adjust the position of the pipe segment clamping mechanism through the four-bar mechanism, so that the buckle bolt on the target pipe segment enters the pipe segment clamping mechanism, and the pipe segment clamping mechanism is used to firmly fix it; finally, the removed pipe segment is stably placed in a suitable position by operating the rotating mechanism, the pitch mechanism, and the four-bar mechanism; when removing the lower half ring of pipe segments, the pitch mechanism is operated as a lifting device at this time.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction devices, and in particular relates to a device for removing pipe segments in a shield tunnel and a use method thereof. Background Art

[0002] In tunnel construction, shield tunneling segment installation is a set of continuous technical processes. The use and development of the device for removing segments in shield tunnels is based on a new tunnel construction method that partially removes segments and excavates the station body after the overall construction of the tunnel. When installing the segments, based on the segment installation device in the shield machine, the process of removing segments in the tunnel is a special and dedicated solution, and there is no precedent in tunnel construction.

[0003] Therefore, a device that can remove pipe segments safely and efficiently in a tunnel is urgently needed. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a device for removing pipe segments in a shield tunnel and a method for using the device.

[0005] The present invention is achieved through the following technical solutions:

[0006] A device for removing pipe segments in a shield tunnel, comprising a walking carrier, a rotating mechanism, an elevation mechanism, a four-bar mechanism and a pipe segment clamping mechanism;

[0007] The rotating mechanism is installed on the walking carrier, and the pitch mechanism is installed on the turntable of the rotating mechanism. The pitch mechanism includes a main telescopic action arm and a lifting cylinder. The bottom end of the main telescopic action arm is installed on a bracket through a rotating shaft. The bracket is fixed to the turntable of the rotating mechanism. The bottom end of the lifting cylinder is rotatably installed on the turntable. The top end of the lifting cylinder is hinged on the outer wall of the main telescopic action arm. The lifting angle of the main telescopic action arm is controlled by the lifting cylinder. The elevation control is performed through the main telescopic action arm and the elevation limit is adopted to prevent the boom from leaving the arm cavity.

[0008] The four-bar mechanism is installed on the main telescopic action arm of the pitch mechanism, and the four-bar mechanism includes a driving cylinder, a triangular turntable, a connecting rod and a top support. The tail end of the driving cylinder is hinged on the outer arm of the main telescopic action arm, the top end of the driving cylinder is hinged to the first corner of the triangular turntable, the second corner of the triangular turntable is hinged to one end of the connecting rod, the third corner of the triangular turntable is hinged to the inner telescopic arm of the main telescopic action arm, the other end of the connecting rod is hinged to the top support, and the bottom end of the top support is also hinged to the top end of the inner telescopic arm of the main telescopic action arm;

[0009] The segment clamping mechanism is installed on the top support of the four-bar mechanism, and the segment clamping mechanism includes a weight-bearing seat, a buckle, a buckle cylinder, a vacuum suction cup, and a vacuum suction cup driving cylinder; the weight-bearing seat is fixed to the top support of the four-bar mechanism, the buckle cylinder is vertically installed on the weight-bearing seat, the buckle is fixed to the action end of the buckle cylinder, and the buckle is driven by the buckle cylinder to adjust its extension height, and the buckle is used to align and connect with the buckle bolts on the tunnel segment; the vacuum suction cup driving cylinder is vertically installed on the weight-bearing seat, and a vacuum suction cup is installed on the top of each vacuum suction cup driving cylinder. There are multiple vacuum suction cup driving cylinders distributed around the buckle.

[0010] In the above technical solution, the walking carrier can walk on the track, and is provided with hydraulic support legs; the number of the hydraulic support legs is 8, with 4 legs arranged on each side of the walking carrier; after the hydraulic support legs fall, the walking carrier can be stably positioned.

[0011] In the above technical solution, the rotating mechanism includes a turntable, a central rotating shaft, and a driving assembly for driving the central rotating shaft to rotate. The central rotating shaft is vertically mounted on a disk at the tail of the walking carrier, and the turntable is fixedly mounted on the top of the central rotating shaft. When the central rotating shaft is driven, 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 to the central rotating shaft through the gear assembly.

[0012] In the above technical solution, there are two lifting cylinders, which are respectively arranged on both sides of the main telescopic action arm.

[0013] 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 top end of the inner telescopic arm of the main telescopic action arm is hinged at the bottom corner of the flange plate.

[0014] In the above technical solution, the vacuum suction cup driving cylinders are arranged in a rectangular shape around the buckle head.

[0015] In the above technical solution, the number of buckles and buckle head cylinders is 2, which are arranged in rows.

[0016] In the above technical solution, the structure of the buckle head is as follows: two claws are provided on the buckle head, and the gap between the two claws is slightly larger than the diameter of the buckle head bolt, but smaller than the diameter of the end of the buckle head bolt, so that the buckle head bolt can enter the gap between the two claws and the end of the buckle head bolt can enter the bottom space of the two claws, and a concave cavity for accommodating the end of the buckle head bolt is also provided on the inner walls of the two claws.

[0017] In the above technical solution, a connecting portion for connecting a sling is provided on the load-bearing seat.

[0018] The method of using the device for removing segments in a shield tunnel is as follows:

[0019] Before removing the pipe segment, first stabilize the walking carrier, then adjust the rotation angle of the rotating mechanism according to the sequence of pipe segment removal, so that the pipe segment clamping mechanism faces the target pipe segment, and then send the main pipe segment clamping mechanism to a specified elevation of a certain distance from the pipe segment to be removed through the elevation mechanism, and at the same time further adjust the position of the pipe segment clamping mechanism through the driving cylinder of the four-bar mechanism, so that the buckle head bolt on the target pipe segment enters the buckle head, and then the buckle head cylinder contracts, so that the end of the buckle head bolt is stuck in the buckle head cavity, and at the same time, the vacuum suction cup drives the cylinder to push out, so that the vacuum suction cup supports the pipe segment, thereby firmly locking the pipe segment; finally, the removed pipe segment is stably placed in a suitable position by operating the rotating mechanism, the elevation mechanism, and the four-bar mechanism;

[0020] Before removing the lower half ring of segments, since parts of the segments on both sides are under the track, the track needs to be removed before the segments can be removed. In order to facilitate the removal of the lower half ring of segments in the tunnel annular segment, the elevation and depression mechanism is operated as a lifting device at this time.

[0021] The advantages and beneficial effects of the present invention are:

[0022] 1. The method of removing the pipe segments of the present invention is safer than the method of manually removing the pipe segments by erecting a support, and can reduce the accident rate.

[0023] 2. The present invention has diversified ways to remove pipe segments. The pipe segment clamping mechanism can rotate within a range of 210 degrees when removing the top pipe segment. The pipe segment clamping mechanism can be used to lift the lower pipe segment, thereby optimizing the construction procedure.

[0024] 3. The present invention can be used as a supporting structure when removing the pipe segments, reducing the large-scale vibration when the pipe segments are broken, so as to prevent disturbance to the adjacent pipe segments. It can effectively prevent the deslurry of the pipe segments and the soil inside the tunnel without removing them.

[0025] 4. The present invention is based on a new tunnel construction method and is a special customized equipment required for the construction of the new method. There is no precedent for its engineering application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of a device for removing pipe segments in a shield tunnel according to the present invention.

[0027] Figure 2 It is a rear view schematic diagram of a device for removing pipe segments in a shield tunnel according to the present invention.

[0028] Figure 3 It is a schematic diagram of the working state of the device for removing pipe segments in a shield tunnel of the present invention (locking pipe segments).

[0029] Figure 4 It is a schematic diagram of the working state of the device for removing pipe segments in a shield tunnel of the present invention (lowering pipe segments).

[0030] Figure 5 It is a structural schematic diagram of a buckle head in a device for removing pipe segments in a shield tunnel according to the present invention.

[0031] Figure 6 It is a top view of the buckle head in the device for removing pipe segments in a shield tunnel according to the present invention.

[0032] Figure 7 It is a top view of the pipe segment clamping mechanism in the device for removing pipe segments in a shield tunnel according to the present invention.

[0033] Figure 8 It is an enlarged structural view of the pipe segment clamping mechanism in the device for removing pipe segments in a shield tunnel of the present invention when locking the pipe segment.

[0034] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with specific embodiments.

[0036] Referring to the attached drawings, a device for removing pipe segments in a shield tunnel comprises a walking carrier 1, a rotating mechanism 2, an elevation mechanism 3, a four-bar mechanism 4 and a pipe segment clamping mechanism 5.

[0037] The walking carrier 1 can walk on the track. The walking carrier is provided with hydraulic support legs 1-1. The number of the hydraulic support legs is preferably 8, with 4 being arranged on each side of the walking carrier. After the hydraulic support legs are lowered, the walking carrier can be stably positioned.

[0038] The rotating mechanism 2 is installed on the walking carrier, and the rotating mechanism includes a turntable 2-1, a central rotating shaft, and a driving assembly for driving the central rotating shaft to rotate. The central rotating shaft is vertically rotated and installed on the disk at the tail of the walking carrier, and the turntable is fixedly installed on the top of the central rotating shaft. When the central rotating shaft is driven, the central rotating shaft drives the turntable to rotate. Further, 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 to the central rotating shaft through the gear assembly.

[0039] The pitch mechanism 3 is installed on the turntable 2-1 of the rotating mechanism. The pitch mechanism includes a main telescopic action arm 3-1 and a lifting cylinder 3-2. The bottom end of the main telescopic action arm 3-1 is installed on a bracket 3-3 through a rotating shaft. The bracket 3-3 is fixed to the turntable of the rotating mechanism. The bottom end of the lifting cylinder 3-2 is rotatably installed on the turntable. The top end of the lifting cylinder 3-2 is hinged on the outer wall of the main 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. The elevation control is performed through the main telescopic action arm and the elevation limit is adopted to prevent the boom from leaving the arm cavity. Further, the number of the lifting cylinders 3-2 is preferably two, which are arranged on both sides of the main telescopic action arm, so that the support of the main telescopic action arm is more stable.

[0040] 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 driving 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 end of the driving cylinder 4-1 is hinged to the first corner of the triangular turntable 4-2, the second corner of the triangular turntable is hinged to one end of the connecting rod 4-3, the third corner of the triangular turntable is hinged to the inner telescopic arm of the main telescopic action arm 3-1, the other end of the connecting rod 4-3 is hinged to the top support 4-4, and the bottom end of the top support is also hinged to 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 to the side corner of the flange plate, and the top end of the inner telescopic arm of the main telescopic action arm is hinged to the bottom corner of the flange plate.

[0041] 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-bearing seat 5-1, a buckle 5-2, a buckle cylinder 5-3, a vacuum suction cup 5-4, and a vacuum suction cup driving cylinder 5-5; the weight-bearing seat is fixed to the top support 4-4 of the four-bar mechanism, the buckle cylinder is vertically installed on the weight-bearing seat 5-1, the buckle 5-2 is fixed to the action end of the buckle cylinder 5-3, and the buckle is driven by the buckle cylinder to adjust its extension height, and the buckle is used to be connected with the buckle bolt on the tunnel segment; the vacuum suction cup driving cylinder is vertically installed on the weight-bearing seat, and 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, which are distributed around the buckle 5-2, and the vacuum suction cup driving cylinders are arranged in a rectangular shape around the buckle. Further, the number of buckles 5-2 and buckle cylinders 5-3 is preferably 2 ( Figure 7 ), arranged in rows; further, see Appendix Figure 5-6The structure of the buckle head 5-2 is as follows: two claws 5-21 are arranged on the buckle head, and the gap a between the two claws is slightly larger than the diameter of the buckle head bolt 6-1, but smaller than the diameter of the end of the buckle head bolt 6-1, so that the buckle head bolt 6-1 can enter the gap between the two claws, and the end of the buckle head bolt 6-1 can enter the bottom space of the two claws, and a concave cavity 5-22 for accommodating the end of the buckle head bolt 6-1 is also arranged on the inner wall of the two claws, so as to lock the position of the end of the buckle head bolt 6-1 ( Figure 8 ).

[0042] The method of using this device is as follows:

[0043] Before the segment 6 is removed, the walking carrier 1 is first stabilized by the hydraulic support leg 1-1, and then the rotation angle of the rotating mechanism is adjusted according to the sequence of segment removal so that the segment clamping mechanism faces the target segment, and then the main segment clamping mechanism 5 is sent to a specified elevation of a certain distance from the segment to be removed through the pitch mechanism, and at the same time, the position of the segment clamping mechanism 5 is further adjusted through the driving cylinder 4-1 of the four-bar mechanism so that the buckle bolt 6-1 on the target segment enters between the two claws 5-21 of the buckle 5-2, and then the buckle cylinder 5-3 contracts so that the end of the buckle bolt 6-1 is stuck in the concave cavity 5-22, and at the same time, the vacuum suction cup drives the cylinder 5-5 to push out so that the vacuum suction cup 5-4 presses against the segment, thereby firmly locking the segment; finally, the removed segment is stably placed in a suitable position by operating the rotating mechanism 2, the pitch mechanism 3, and the four-bar mechanism 4.

[0044] Furthermore, before removing the lower half ring of segments, since the segments on both sides are partially under the track, the track needs to be removed before the segments can be removed. In order to facilitate the removal of the lower half ring of segments in the tunnel annular segment, the elevation mechanism is operated as a lifting device at this time, and a connecting portion for connecting a lifting rope is provided on the load-bearing seat 5-1.

[0045] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0046] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0047] The present invention is described above by way of example. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be made by those skilled in the art without inventive effort falls within the protection scope of the present invention.

Claims

1. A device for removing segments in a shield tunnel, characterized in that: It includes a walking carrier, a rotating mechanism, an elevation mechanism, a four-bar mechanism and a segment clamping mechanism; The rotating mechanism is installed on the walking carrier, and the pitch mechanism is installed on the turntable of the rotating mechanism. The pitch mechanism includes a main telescopic action arm and a lifting cylinder. The bottom end of the main telescopic action arm is installed on a bracket through a rotating shaft. The bracket is fixed to the turntable of the rotating mechanism. The bottom end of the lifting cylinder is rotatably installed on the turntable. The top end of the lifting cylinder is hinged on the outer wall of the main telescopic action arm. The lifting angle of the main telescopic action arm is controlled by the lifting cylinder. The elevation control is performed through the main telescopic action arm and the elevation limit is adopted to prevent the boom from leaving 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 driving cylinder, a triangular turntable, a connecting rod and a top support. The tail end of the driving cylinder is hinged on the outer arm of the main telescopic action arm, the top end of the driving cylinder is hinged to the first corner of the triangular turntable, the second corner of the triangular turntable is hinged to one end of the connecting rod, the third corner of the triangular turntable is hinged to the inner telescopic arm of the main telescopic action arm, the other end of the connecting rod is hinged to the top support, and the bottom end of the top support is also hinged to 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-bearing seat, a buckle head, a buckle head cylinder, a vacuum suction cup, and a vacuum suction cup driving cylinder; the weight-bearing seat is fixed to the top support of the four-bar mechanism, the buckle head cylinder is vertically installed on the weight-bearing seat, the buckle head is fixed to the action end of the buckle head cylinder, and the buckle head is driven by the buckle head cylinder to adjust its extension height, and the buckle head is used to align and connect with the buckle head bolts on the tunnel segment; the vacuum suction cup driving cylinder is vertically installed on the weight-bearing seat, and a vacuum suction cup is installed on the top of each vacuum suction cup driving cylinder, and there are multiple vacuum suction cup driving cylinders distributed around the buckle head; The walking carrier can walk on the track, and is provided with hydraulic support legs; the number of the hydraulic support legs is 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; The rotating mechanism includes a turntable, a central rotating shaft, and a driving assembly for driving the central rotating shaft to rotate. The central rotating shaft is vertically mounted on a disk at the tail of the walking carrier, and the turntable is fixedly mounted on the top of the central rotating shaft. When the central rotating shaft is driven, 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 to the central rotating shaft through the gear assembly.

2. The device for removing segments in a shield tunnel according to claim 1, characterized in that: There are two lifting cylinders, which are respectively arranged on both sides of the main telescopic action arm.

3. 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, 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.

4. The device for removing segments in a shield tunnel according to claim 1, characterized in that: The vacuum suction cup driving cylinders are arranged in a rectangular shape around the buckle head.

5. The device for removing segments in a shield tunnel according to claim 1, characterized in that: There are 2 buckles and buckle cylinders, which are arranged in a row.

6. 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 slightly larger than the diameter of the buckle head bolt, but smaller than the diameter of the end of the buckle head bolt, so that the buckle head bolt can enter the gap between the two claws and the end of the buckle head bolt can enter the bottom space of the two claws, and a concave cavity for accommodating the end of the buckle head bolt is also arranged on the inner wall of the two claws.

7. The device for removing segments in a shield tunnel according to claim 1, characterized in that: The load-bearing seat is provided with a connecting portion for connecting a suspension rope.

8. The method for using the device for removing segments in a shield tunnel according to claim 1, characterized in that: Before removing the pipe segment, first stabilize the walking carrier, then adjust the rotation angle of the rotating mechanism according to the sequence of pipe segment removal, so that the pipe segment clamping mechanism faces the target pipe segment, and then send the main pipe segment clamping mechanism to a specified elevation of a certain distance from the pipe segment to be removed through the elevation mechanism, and at the same time further adjust the position of the pipe segment clamping mechanism through the driving cylinder of the four-bar mechanism, so that the buckle head bolt on the target pipe segment enters the buckle head, and then the buckle head cylinder contracts, so that the end of the buckle head bolt is stuck in the buckle head cavity, and at the same time, the vacuum suction cup drives the cylinder to push out, so that the vacuum suction cup supports the pipe segment, thereby firmly locking the pipe segment; finally, the removed pipe segment is stably placed in a suitable position by operating the rotating mechanism, the elevation mechanism, and the four-bar mechanism; Before removing the lower half ring of segments, since parts of the segments on both sides are under the track, the track needs to be removed before the segments can be removed. In order to facilitate the removal of the lower half ring of segments in the tunnel annular segment, the elevation and depression mechanism is operated as a lifting device at this time.

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