Construction platform of segment erector

Abstract

The segment erector construction platform comprises the upper-layer platform, the middle-layer platform and the lower-layer platform which are sequentially arranged from top to bottom, the upper-layer platform comprises the fixing tables located on the left side and the right side and the pedal located in the middle, and the fixing tables are connected to a main structure of a segment erector; the distance between the table top of the fixing table and the top of the tunnel is larger than or equal to the height of an adult, the pedal is rotationally connected with the fixing table, the rotating axis of the pedal extends in the front-back direction, the rotating angle of the pedal is 90 degrees, and the pedal has a turning-up working position and a laying-flat working position; the middle of the upper-layer platform can be overhead to avoid the screw conveyor, when the pedal is located at the horizontal working position, the pedal is flush with the table top of the fixing table, the pedal can bear constructors to conduct construction operation and can adapt to front-back movement of the segment erector, the constructors can conduct construction in a standing mode, the construction efficiency is high, and safety is good.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine technology, and more specifically to a segment assembly machine construction platform. Background Technology

[0002] The segment assembly machine is a key subsystem of the tunnel boring machine (TBM). It is used to assemble precast concrete segments. Every time the TBM excavates a ring, it needs to use the segment assembly machine to quickly and accurately install the precast concrete segments from outside the tunnel onto the newly excavated tunnel surface to support the tunnel surface and prevent groundwater and soil seepage and surface subsidence.

[0003] During the segment assembly process, the segment assembler first needs to grab the segments transported from behind the tunnel boring machine, and then after a series of adjustments, deliver the segments to the designated position. Once the segments arrive at the designated position, construction workers manually install and tighten the segment connection bolts at the segment connection points, thus completing the assembly of one segment. To ensure the completion of segment connections, the segment assembler needs to be designed with a construction platform to allow construction workers to walk and perform bolt connection operations.

[0004] In 6-meter-class earth pressure balance shield tunneling machines, the construction platform of the segment assembler is usually set up as a three-layer structure, with adjacent platforms connected by inclined or straight ladders. Each platform is fixedly connected to the main structure of the segment assembler. During operation, the segment assembler needs to move back and forth, which means that at certain times, the auger conveyor for transporting excavated soil needs to pass through the middle of the segment assembler. To avoid interference, the upper platform of the existing segment assembler is raised as high as possible, resulting in a low height between the upper platform and the tunnel top. Construction workers cannot stand upright when working on the upper platform, making operation inconvenient and reducing construction efficiency. In extreme cases, the height of the upper platform from the tunnel top can only allow construction workers to crawl forward, which also affects personnel safety. Utility Model Content

[0005] The purpose of this utility model is to overcome one or more shortcomings in the prior art and provide a construction platform for a segment assembly machine.

[0006] To achieve the above objectives, the technical solution provided by this utility model is a segment assembly machine construction platform, comprising an upper platform, a middle platform, and a lower platform arranged sequentially from top to bottom. The upper platform includes fixed platforms on the left and right sides and a pedal in the middle. The fixed platforms are connected to the main structure of the segment assembly machine. The distance between the platform surface and the tunnel ceiling is greater than or equal to the height of an adult. The pedal is rotatably connected to the fixed platforms, and the rotation axis of the pedal extends in the front-back direction. The rotation angle of the pedal is 90 degrees. The pedal has a flip-up working position and a flat working position. When the pedal is in the flip-up working position, the pedal is perpendicular to the horizontal plane, so that the middle of the upper platform is suspended to avoid the auger. When the pedal is in the flat working position, the pedal is flush with the platform surface of the fixed platforms. The pedal can support construction personnel to perform construction operations.

[0007] Preferably, the pedal is divided into two parts, and these two pedal parts are rotatably connected to the two fixed platforms respectively.

[0008] More preferably, the two pedals are of equal length in the left-right direction.

[0009] Preferably, the fixed platform includes a base plate and a guardrail. The front and rear edges of the base plate extend beyond the front and rear edges of the pedal, respectively. The guardrail is connected to the base plate and is disposed near the front and rear edges of the base plate, and the guardrail extends upward.

[0010] More preferably, the upper platform further includes an iron chain that limits the rotation angle of the pedal. The iron chain is located on the front and rear sides of the pedal, one end of the iron chain is fixedly connected to the middle of the guardrail, and the other end is fixedly connected to the front or rear side of the pedal.

[0011] More preferably, the chain is an industrial chain, with one end connected to the middle of the surface of the guardrail facing the pedal, and the other end connected to the front or rear side of the pedal away from the guardrail.

[0012] More preferably, when the pedal is in the flat working position, the chain is taut, and the chain, the guardrail, and the pedal form a triangular structure. When the pedal is in the flipped-up working position, the chain is slack, and the slack part is wrapped around the guardrail to achieve binding.

[0013] More preferably, the base plate is a stepped base plate, and the platform of the fixed platform is the highest upper surface of the base plate.

[0014] More preferably, the pedal is connected to the opposite side of the base plate by a hinge, and the pedal is rotatably connected to the base plate by the hinge. There are two hinges and they are spaced apart in the front-back direction.

[0015] More preferably, the upper surfaces of the base plate and the pedal are both anti-slip surfaces with anti-slip protrusions.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] The segment assembly machine construction platform provided by this utility model includes an upper platform, a middle platform, and a lower platform arranged sequentially from top to bottom. The upper platform includes fixed platforms on the left and right sides and a footboard in the middle. The fixed platforms are connected to the main structure of the segment assembly machine, and the distance between the platform surface and the tunnel ceiling is greater than or equal to the height of an adult. The footboard is rotatably connected to the fixed platform, and the rotation axis of the footboard extends in the front-back direction, with a rotation angle of 90 degrees. The footboard has a flip-up working position and a flat working position. When the footboard is in the flip-up working position, it is perpendicular to the horizontal plane, allowing the middle of the upper platform to be suspended to avoid the auger. When the footboard is in the flat working position, it is flush with the platform surface of the fixed platform, allowing the footboard to support construction personnel for construction work. It can adapt to the front-back movement of the segment assembly machine, and construction personnel can stand and work, resulting in high construction efficiency and good safety. Attached Figure Description

[0018] Figure 1 This is a longitudinal section schematic diagram of the tunnel boring machine in the preferred embodiment of this utility model.

[0019] Figure 2 , Figure 3 yes Figure 1 A cross-sectional view of the segment assembly machine, in which... Figure 2 The pedal in the middle is in the flip-up working position. Figure 3 The pedal is in the flat working position.

[0020] Figure 4 yes Figure 3 A schematic diagram of the structure at the central fixed platform.

[0021] Figure 5 yes Figure 4 A left-side view diagram.

[0022] Figure 6 yes Figure 4 Cross-sectional view along the AA direction.

[0023] Figure 7 yes Figure 5 Cross-sectional view along the BB direction.

[0024] Figure 8 yes Figure 2 A schematic diagram of the structure at the central fixed platform.

[0025] Among them: 1. Segment assembly machine; 2. Spiral conveyor; 3. Tunnel boring machine; 10. Upper platform; 11. Fixed platform; 111. Base plate; 112. Guardrail; 12. Step; 13. Chain; 14. Hinge; 15. Anti-slip protrusion; 20. Middle platform; 30. Lower platform; 41. Side flange; 42. Bottom flange. Detailed Implementation

[0026] like Figures 1 to 8 As shown, the construction platform for the segment assembly machine provided by this utility model includes an upper platform 10, a middle platform 20, and a lower platform 30 arranged sequentially from top to bottom. Adjacent platforms are connected by a straight ladder. The upper platform 10, the middle platform 20, the lower platform 30, and the straight ladder are arranged symmetrically from left to right. Each platform is fixed by a mounting flange. Specifically, the mounting flange includes a side flange 41 and a bottom flange 42. The side flange 41 is fixed to the rear surface of the main structure of the segment assembly machine 1, and the bottom flange 42 is fixed to the upper surface of the middle platform, so that the construction platform can move back and forth with the segment assembly machine 1. Further, the upper platform 10 includes fixed platforms 11 located on the left and right sides and a step 12 located in the middle. The fixed platforms 11 are connected to the main structure of the segment assembly machine 1. The distance from the platform surface of the fixed platform 10 to the top of the tunnel is greater than or equal to the height of an adult (for adult height data, please refer to GB / T "Anthropometric Dimensions of Chinese Adults"). 10000-2023), the pedal 12 is rotatably connected to the fixed platform 11. The rotation axis of the pedal 12 extends in the front-to-back direction. The rotation angle of the pedal 12 is 90 degrees. The pedal 12 has a flip-up working position and a flat working position. When the pedal 12 is in the flip-up working position, the pedal 12 is perpendicular to the horizontal plane, so that the middle part of the upper platform 10 is suspended to avoid the screw conveyor 2. When the pedal 12 is in the flat working position, the pedal 12 is flush with the platform surface of the fixed platform 11. The pedal 12 can support the construction personnel to carry out construction work. The construction platform can avoid interference with the screw conveyor 2 when it moves back and forth in the segment assembly machine 1, and reduces the installation height of the upper platform 10, so that the construction personnel can stand and work, resulting in high construction efficiency and good safety.

[0027] In this embodiment, the pedal 12 is divided into two parts, which are rotatably connected to two fixed platforms 11 respectively. The lengths of the two pedals 12 in the left and right directions are equal. This arrangement can reduce the height of the upper edge of the pedal 12 when it is flipped up, and avoid interference with other components of the tunnel boring machine 3.

[0028] In this embodiment, the fixed platform 11 includes a base plate 111 and a guardrail 112. The front and rear edges of the base plate 111 extend beyond the front and rear edges of the pedal 12, respectively. The guardrail 112 is connected to the base plate 111 and is located close to the front and rear edges of the base plate 111. The guardrail 112 extends upward. Furthermore, the upper platform 10 also includes an iron chain 13 that limits the rotation angle of the pedal 12. The iron chain 13 is located on the front and rear sides of the pedal 12. The iron chain 13 is an industrial iron chain. One end of the iron chain 13 is fixedly connected to the middle of the guardrail 112, and the other end is fixedly connected to the front or rear side of the pedal 12. Specifically, one end of the iron chain 13 is connected to the middle of the surface of the guardrail 112 facing the pedal 12, and the other end is connected to the front or rear side of the pedal 12 away from the guardrail 112.

[0029] When the pedal 12 is in the flat working position, the chain 13 is taut, so that the chain 13, the guardrail 112, and the pedal 12 form a stable triangular structure to support the construction personnel. When the pedal 12 is in the flipped working position, the chain 13 is slack, and the slack part of the chain 13 is wrapped around the guardrail 112 to bind it, so as to prevent the pedal 12 from being accidentally flattened.

[0030] For ease of use, in this embodiment, the base plate 111 is a two-step base plate, and the platform of the fixed platform 11 is the highest upper surface of the base plate 111. The pedal 12 is connected to the opposite side of the base plate 111 by a hinge 14. The pedal 12 is rotatably connected to the base plate 111 by the hinge 14. There are two hinges 14, which are spaced apart in the front-back direction. Furthermore, the upper surfaces of the base plate 111 and the pedal 12 are both anti-slip surfaces with anti-slip protrusions 15.

[0031] When construction workers need to perform bolt connection work on the upper platform 10, they can move the segment assembly machine 1 away from the screw conveyor 2 and change the pedal 12 to the flat working position. At this time, the construction platform will not interfere with the screw conveyor 2, and the height of the upper platform 10 from the top of the tunnel is sufficient for construction workers to walk freely. After the bolt connection work is completed, the construction workers leave the upper platform 10 and change the pedal 12 to the flip-up working position to ensure that the middle of the segment assembly machine 1 is suspended, which can avoid interference between the upper platform 10 and the screw conveyor 2 during the movement of the segment assembly machine 1.

[0032] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A segment assembly machine construction platform, comprising an upper platform, a middle platform, and a lower platform arranged sequentially from top to bottom, characterized in that: The upper platform includes fixed platforms on the left and right sides and a step in the middle. The fixed platforms are connected to the main structure of the segment assembly machine. The distance between the platform surface and the tunnel ceiling is greater than or equal to the height of an adult. The step is rotatably connected to the fixed platforms. The axis of rotation of the step extends in the front-to-back direction. The rotation angle of the step is 90 degrees. The step has a flip-up working position and a flat working position. When the step is in the flip-up working position, the step is perpendicular to the horizontal plane, so that the middle of the upper platform is suspended to avoid the screw conveyor. When the step is in the flat working position, the step is flush with the platform surface of the fixed platforms. The step can support construction personnel to carry out construction work.

2. The segment assembly machine construction platform according to claim 1, characterized in that: The pedal is divided into two parts, which are rotatably connected to the two fixed platforms respectively.

3. The segment assembly machine construction platform according to claim 2, characterized in that: The two pedals are of equal length in the left-right direction.

4. The segment assembly machine construction platform according to claim 1, characterized in that: The fixed platform includes a base plate and a guardrail. The front and rear edges of the base plate extend beyond the front and rear edges of the pedal, respectively. The guardrail is connected to the base plate and is located near the front and rear edges of the base plate, and extends upward.

5. The segment assembly machine construction platform according to claim 4, characterized in that: The upper platform also includes an iron chain that restricts the rotation angle of the pedal. The iron chain is located on the front and rear sides of the pedal. One end of the iron chain is fixedly connected to the middle of the guardrail, and the other end is fixedly connected to the front or rear side of the pedal.

6. The segment assembly machine construction platform according to claim 5, characterized in that: The chain is an industrial chain, with one end connected to the middle of the surface of the guardrail facing the pedal, and the other end connected to the front or rear side of the pedal away from the guardrail.

7. The segment assembly machine construction platform according to claim 5, characterized in that: When the pedal is in the flat working position, the chain is taut, and the chain, the guardrail, and the pedal form a triangular structure. When the pedal is in the flipped working position, the chain is slack, and the slack part is wrapped around the guardrail to achieve binding.

8. The segment assembly machine construction platform according to claim 4, characterized in that: The base plate is a stepped base plate, and the platform of the fixed platform is the highest upper surface of the base plate.

9. The segment assembly machine construction platform according to claim 4, characterized in that: The pedal is connected to the opposite side of the base plate by a hinge, and the pedal is rotatably connected to the base plate by the hinge. There are two hinges, which are spaced apart in the front-back direction.

10. The segment assembly machine construction platform according to claim 4, characterized in that: The upper surfaces of both the base plate and the pedal are anti-slip surfaces with anti-slip protrusions.

Images