A fixed segment assembly machine

Abstract

The fixed segment assembly machine provided by this invention includes a movable sliding frame, a deflecting frame located on the side of the sliding frame away from the shield axis, a deflecting cylinder for driving the deflecting frame to rotate relative to the sliding frame, a lifting device located in the middle of the deflecting frame, and support shoes located below the four corners of the deflecting frame. The sliding frame can be raised and lowered and can move and rotate along the shield axis. The lifting device is used to lift the segments to be assembled. By making the support shoes retractable and setting at least two mating surfaces at their bottom, one mating surface matches the inner wall surface of a normal segment, and the other matches the platform of the inner wall of a non-circular segment. Regardless of whether the lifting device lifts a normal or non-circular segment, the support shoes can extend out of the mating surface to fit and abut against the segment, making it stably connected to the deflecting frame. The assembly is achieved in conjunction with the movement of the sliding frame. It can accommodate the assembly of both normal and non-circular segments, has good versatility, and is particularly suitable for small-diameter shield tunneling.

Description

Technical Field

[0001] This invention relates to the field of tunnel segment assembly technology in shield tunneling, specifically to a fixed segment assembly machine. Background Technology

[0002] Existing segment assembly machines are mainly divided into two categories: fixed and mobile. Mobile assembly machines have a support beam structure fixed on the longitudinal beam of the shield body, occupy a large space, and are often used for shield machines with a diameter of 6m or more. Fixed assembly machines have no main beam, have a simple structure, occupy a small space, and are often used for small-diameter shield construction.

[0003] In small-diameter shield tunneling, the segments forming the segment ring are mostly ordinary circular segments. They are gripped using support shoes with a single-sloped lower surface, enabling stable yaw, pitch, and roll. However, to improve the stress conditions at the top and increase the support resistance at the bottom and in the wall, inverted arch blocks are also installed at the bottom of the segment ring. These inverted arch blocks are irregularly shaped segments, such as... Figure 1 As shown, the outer wall has ribs on both sides and the bottom of the inner wall is filled with a platform with grooves. Since the inner wall surface is not a traditional arc surface, the support shoes of the original segment assembly machine are difficult to fit, and the swaying during tilting, pitching and rolling is large. This not only poses a safety hazard, but also makes it difficult to adjust to the required posture for assembly, resulting in low construction efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome one or more shortcomings in the prior art and provide a fixed segment assembly machine that is compatible with the installation of irregularly shaped segments.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is a fixed segment assembly machine, comprising: The movable sliding frame is capable of being raised, lowered, moved, and rotated along the axis of the shield body. A deflector is provided on the side of the sliding frame away from the shield body axis, the middle part of the deflector is rotatably connected to the sliding frame, and the rotation axis of the deflector extends along the radial direction of the shield body; A deflection cylinder for driving the deflection frame to rotate relative to the sliding frame, wherein the cylinder body is rotatably connected to the sliding frame and the end of the piston rod is rotatably connected to the deflection frame; A lifting device located in the middle of the deflection frame is used to lift the segments to be spliced. Support shoes located below the four corners of the deflection frame; The support shoe is retractable, and the deflection frame is also equipped with a support shoe cylinder that drives the support shoe to extend or retract. The bottom of the support shoe has at least two mating surfaces, one of which matches the inner wall surface of a normal pipe segment, and the other of which matches the platform of the inner wall of a non-circular pipe segment. When the lifting device lifts a normal pipe segment, the support shoe extends so that one of the mating surfaces fits tightly against the inner wall surface of the normal pipe segment. When the lifting device lifts a non-circular pipe segment, the support shoe extends so that the other mating surface fits tightly against the platform of the inner wall of the pipe segment, so that the pipe segment is stably connected to the deflection frame.

[0006] Preferably, the support boot is a solid rubber support boot, and the bottom surface of the support boot has a slope and a straight surface, the slope and the straight surface forming the mating surface.

[0007] More preferably, the inclined surface is located outside the straight surface, and the inclined surface is connected to the straight surface to form the bottom surface of the support boot.

[0008] Preferably, the support boot is a rubber support boot with an internal cavity. When the pressure inside the cavity increases, the bottom surface of the support boot deforms and fits tightly against the inner wall surface and / or the platform to form the mating surface.

[0009] More preferably, the support boot includes a relatively rigid body and a relatively soft rubber bladder. The body is bowl-shaped and has a bottom plate and a surrounding plate vertically connected around the bottom plate. The rubber bladder is embedded in and connected to the body, and the inner cavity of the rubber bladder forms the cavity.

[0010] More preferably, the side wall of the rubber bladder is provided with an opening, which is connected to a pressure supply pipe that penetrates the enclosure.

[0011] More preferably, the pressure supply pipe is provided with a valve, which is closed when the mating surface is formed, so that the pressure inside the rubber bladder is maintained at a set value.

[0012] More preferably, the pressure supply pipe is connected to the oil supply pipe of the support shoe cylinder.

[0013] More preferably, the inner wall of the body is connected to a partition, the partition separating multiple spaces between the bottom plate and the surrounding plate, and there are multiple rubber bladders, with one rubber bladder in each space.

[0014] More preferably, the rubber bladder closer to the lifting device is lower than the rubber bladder farther away from the lifting device.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The fixed segment assembly machine provided by this invention includes a movable sliding frame, a deflecting frame located on the side of the sliding frame away from the shield's axis, a deflecting cylinder for driving the deflecting frame to rotate relative to the sliding frame, a lifting device located in the middle of the deflecting frame, and support shoes located below the four corners of the deflecting frame. The sliding frame can be raised and lowered and can move and rotate along the shield's axis. The lifting device is used to lift the segments to be assembled. By making the support shoes retractable and providing at least two mating surfaces at their bottom, one of the mating surfaces... One mating surface matches the inner wall surface of a regular tunnel segment, while the other mating surface matches the platform of the inner wall of a shaped tunnel segment. When the lifting equipment is used to lift a regular tunnel segment, the support shoe can extend to make one of the mating surfaces fit snugly against the inner wall surface of the regular tunnel segment. When the lifting equipment is used to lift a shaped tunnel segment, the support shoe can extend to make the other mating surface fit snugly against the platform of the inner wall of the segment, so that the tunnel segment is stably connected to the deflection frame. This design accommodates the assembly of both regular and shaped tunnel segments, has good versatility, and is particularly suitable for small-diameter shield tunneling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the existing segment ring structure.

[0017] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0018] Figure 3 yes Figure 2 Cross-sectional view along the AA direction.

[0019] Figure 4 yes Figure 3 A schematic diagram of hoisting ordinary tunnel segments.

[0020] Figure 5 yes Figure 3 A schematic diagram of hoisting irregularly shaped tunnel segments.

[0021] Figure 6 yes Figure 3 A three-dimensional schematic diagram of the deflection plate.

[0022] Figure 7 This is a schematic diagram of the support boot structure in Embodiment 2 of the present invention.

[0023] Figure 8 This is a schematic diagram of the support boot structure in Embodiment 3 of the present invention.

[0024] Among them: 1. Ordinary segment; 2. Inner wall surface; 3. Irregular segment; 4. Platform; 10. Sliding frame; 20. Deflection frame; 21. Support shoe cylinder; 30. Deflection cylinder; 40. Lifting device; 50. Support shoe; 51. Inclined surface; 52. Straight surface; 53. Cavity; 54. Body; 541. Base plate; 542. Enclosure plate; 543. Partition plate; 55. Rubber bladder; 551. Opening. Detailed Implementation

[0025] Example 1, as Figures 2 to 6 As shown, the fixed segment assembly machine provided by the present invention includes: a sliding frame 10, a deflecting frame 20, a deflecting cylinder 30, a lifting device 40, and a support shoe 50. The sliding frame 10 is movably arranged and has three degrees of freedom: lifting, translation, and rotation. That is, the sliding frame 10 can be lifted and lowered, and can move and rotate along the axis of the shield body. This can be achieved by placing the sliding frame 10 on a translation frame, the translation frame on a lifting frame, and the lifting frame on a rotation ring, which is existing technology and will not be described further here. The deflecting frame 20 is located on the side of the sliding frame 10 away from the axis of the shield body. The middle part of the deflecting frame 20 is rotatably connected to the sliding frame 10, and the rotation axis of the deflecting frame 20 extends radially along the shield body. The deflecting cylinder 30 is used to drive the deflecting frame 20 to rotate relative to the sliding frame 10. The cylinder body of the deflecting cylinder 30 is rotatably connected to the sliding frame 10, and the end of the piston rod of the deflecting cylinder 30 is rotatably connected to the deflecting frame 20. The lifting device 40... The lifting device 40 is located in the middle of the deflection frame 30 and is used to lift the segments to be spliced. During lifting, its connection point with the segment is located at the center of the segment. The support shoes 50 are located below the four corners of the deflection frame 20. The support shoes 50 are telescopic. The deflection frame 20 is also equipped with a support shoe cylinder 21 to drive the support shoes 50 to extend or retract. The bottom of the support shoes 50 has at least two mating surfaces. One mating surface matches the inner wall surface 2 of the ordinary segment 1, and the other mating surface matches the irregular segment. Platform 4 on the inner wall of segment 3 is matched. When the lifting device 40 lifts ordinary segment 1, the support shoe 50 extends so that one of the mating surfaces fits tightly against the inner wall surface 2 of ordinary segment 1. When the lifting device 40 lifts irregular segment 3, the support shoe 50 extends so that the other mating surface fits tightly against the platform 4 on the inner wall of irregular segment 3, so that the segment is stably connected to the deflection frame 20. This allows for the assembly of both ordinary segment 1 and irregular segment 3, and has good versatility, making it particularly suitable for small-diameter shield tunneling.

[0026] In this embodiment, the support boot 50 is a solid polyurethane rubber support boot. The bottom surface of the support boot 50 is provided with a slope 51 and a straight surface 52. The slope 51 and the straight surface 52 form a mating surface. Specifically, the slope 51 is located outside the straight surface 52. The slope 51 and the straight surface 52 are connected to form the bottom surface of the support boot 50.

[0027] There are four hydraulic cylinders 21 for supporting shoes, and each hydraulic cylinder 21 corresponds to a supporting shoe 50. Through different combinations of control, the pitch and roll attitude of the hoisted tunnel segments can be finely adjusted.

[0028] The lower structure of the lifting device 40 is machined into an external thread shape, similar to a bolt, and the center of the segment has an internal thread hole, so that the lifting device 40 can be screwed into the segment for subsequent lifting operations. The upper structure of the lifting device 40 can be locked into the segment grab head in the middle of the deflection frame 20, and the two are interlocked.

[0029] Example 2, as Figure 7 As shown, the support shoe 50 in Embodiment 2 is different from that in Embodiment 1. The support shoe 50 in Embodiment 2 is a rubber support shoe with an internal cavity 53. When the pressure inside the cavity 53 increases, the bottom surface of the support shoe 50 deforms and fits tightly against the inner wall surface 2 of the ordinary tube segment 1 and / or the platform 4 of the irregular tube segment 3 to form a mating surface.

[0030] Specifically, the support boot 50 includes a relatively rigid body 54 and a relatively soft rubber bladder 55. The body 54 is bowl-shaped and has a bottom plate 541 and a surrounding plate 542 vertically connected around the bottom plate 541. The bottom plate 541 is connected to the support boot cylinder 21. The rubber bladder 55 is embedded and glued to the body 54, and the inner cavity of the rubber bladder 55 forms a cavity 53.

[0031] To facilitate the pressure increase and decrease of cavity 53, the side wall of rubber bladder 55 is provided with opening 551, which is connected to pressure supply pipe (not shown in the figure) that passes through enclosure 542. The pressure supply pipe is provided with valve. When rubber bladder 55 deforms to form a mating surface, the valve closes, so that the pressure inside rubber bladder 55 is maintained at a set value. This set value is based on the hardness of rubber bladder 55 being close to or greater than the hardness of body 54. When the support cylinder 21 moves to fine adjust the posture of the tube sheet, deformation of rubber bladder 55 is avoided.

[0032] This design allows the rubber bladder 55 to adapt to various sizes of irregularly shaped tube segments, achieving true versatility.

[0033] To facilitate pressure supply, the pressure supply pipe is further connected to the oil supply pipe of the support shoe cylinder 21.

[0034] Example 3, as Figure 8 As shown, Embodiment 3 is basically the same as Embodiment 2, except that in Embodiment 3, the inner wall of the body 54 is connected to a partition 543, which separates two spaces between the bottom plate 541 and the surrounding plate 542. There are two rubber bladders 55, and each space contains a rubber bladder 55.

[0035] To facilitate fitting with the segments, the rubber bladder 55 closer to the spreader 40 is lower than the rubber bladder 55 farther from the spreader 40.

[0036] It should be noted that, due to the size difference between ordinary segment 1 and irregular segment 3, there are two types of lifting devices 40 with different lengths to ensure compatibility.

[0037] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A fixed segment assembly machine, comprising: The sliding frame is movable and can be raised, lowered, moved and rotated along the axis of the shield body. A deflector is provided on the side of the sliding frame away from the shield body axis, the middle part of the deflector is rotatably connected to the sliding frame, and the rotation axis of the deflector extends along the radial direction of the shield body; A deflection cylinder for driving the deflection frame to rotate relative to the sliding frame, wherein the cylinder body is rotatably connected to the sliding frame and the end of the piston rod is rotatably connected to the deflection frame; A lifting device located in the middle of the deflection frame is used to lift the segments to be spliced. Support shoes located below the four corners of the deflection frame; Its features are: The support shoe is retractable, and the deflection frame is also equipped with a support shoe cylinder that drives the support shoe to extend or retract. The bottom of the support shoe has at least two mating surfaces, one of which matches the inner wall surface of a normal tube segment, and the other of which matches the platform of the inner wall of a non-circular tube segment.

2. The fixed segment assembly machine according to claim 1, characterized in that: The support boot is a solid rubber support boot, and the bottom surface of the support boot has a sloping surface and a straight surface, which together form the mating surface.

3. The fixed segment assembly machine according to claim 2, characterized in that: The inclined surface is located outside the straight surface, and the inclined surface is connected to the straight surface to form the bottom surface of the support boot.

4. The fixed segment assembly machine according to claim 1, characterized in that: The support boot is a rubber support boot with an internal cavity. When the pressure inside the cavity increases, the bottom surface of the support boot deforms and fits tightly against the inner wall surface and / or the platform to form the mating surface.

5. The fixed segment assembly machine according to claim 4, characterized in that: The support boot includes a relatively rigid body and a relatively soft rubber bladder. The body is bowl-shaped and has a bottom plate and a surrounding plate vertically connected around the bottom plate. The rubber bladder is embedded in and connected to the body, and the inner cavity of the rubber bladder forms the cavity.

6. The fixed segment assembly machine according to claim 5, characterized in that: The side wall of the rubber bladder has an opening, which is connected to a pressure supply pipe that passes through the enclosure.

7. The fixed segment assembly machine according to claim 6, characterized in that: The pressure supply pipe is equipped with a valve. When the mating surface is formed, the valve is closed to maintain the pressure inside the rubber bladder at a set value.

8. The fixed segment assembly machine according to claim 6, characterized in that: The pressure supply pipe is connected to the oil supply pipe of the support shoe cylinder.

9. The fixed segment assembly machine according to claim 5, characterized in that: The inner wall of the body is connected to a partition, which separates multiple spaces between the bottom plate and the surrounding plate. There are multiple rubber bladders, and each space contains one rubber bladder.

10. The fixed segment assembly machine according to claim 9, characterized in that: The rubber bladder closer to the lifting device is lower than the rubber bladder farther away from the lifting device.

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