Multi-stage folding mobile operation platform for super-large-diameter shield segment assembly

Abstract

The utility model relates to the technical field of operation platforms, in particular to a multi-stage folding mobile operation platform for assembling super-large-diameter shield segments. The working platform comprises a top platform, first-stage platforms are movably connected to the left side and the right side of the top platform, second-stage platforms are movably connected to the ends, away from the top platform, of the first-stage platforms, and third-stage platforms are movably connected to the ends, away from the first-stage platforms, of the second-stage platforms. A first oil cylinder is installed between the top platform and the first-stage platform, a second oil cylinder is installed between the first-stage platform and the second-stage platform, the side wall of the third-stage platform is fixedly connected with a limiting clamping plate, and the outer surface of the limiting clamping plate is attached to the lower surface of the second-stage platform. The folding and unfolding type tunnel duct piece can be folded and unfolded, the state of the folding and unfolding type tunnel duct piece can be adjusted according to actual requirements, and a platform for workers to stand is built on the tunnel duct piece and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of working platforms, in particular to a multi-stage folding mobile working platform for assembling shield segments with super large diameters. Background Art

[0002] The designed thickness of the super-large diameter shield tunnel segments is relatively large. In order to meet the forward and backward movement of the assembly machine during the segment assembly operation and the safe distance between the segments to be assembled and the formed segments, it exceeds the reasonable range of personnel operations. At the same time, the super-large diameter shield is high in height and is an aerial operation, so there is a risk of falling.

[0003] In order to reduce the risk of operation and increase the convenience of personnel operation, a foldable working platform is set up, which is retracted into the gear ring of the segment assembly machine during the assembly operation of the segment assembly machine, without affecting the operation of the assembly machine. After the assembly operation is completed, the working platform can be moved to the shield tail operation area for operation. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a multi-stage folding mobile working platform for assembling super-large diameter shield segments.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multi-stage folding mobile working platform for assembling super-large diameter shield segments, including a top platform, the left and right sides of the top platform are movably connected with a first-level platform, the end of the first-level platform away from the top platform is movably connected with a second-level platform, the end of the second-level platform away from the first-level platform is movably connected with a third-level platform, a first oil cylinder is installed between the top platform and the first-level platform, a second oil cylinder is installed between the first-level platform and the second-level platform, and the side wall of the third-level platform is fixedly connected with a limiting clamp, and the outer surface of the limiting clamp is in contact with the lower surface of the second-level platform.

[0006] The preferred technical solution of the utility model is as follows: a heightened platform is installed on the upper surface of the top platform; the first-level platform, the second-level platform and the third-level platform on both sides of the top platform are symmetrically arranged.

[0007] The better technical solution of the utility model is as follows: the upper surfaces of the first-level platform, the second-level platform and the third-level platform are all fixedly connected with guardrails, and the upper surfaces of the first-level platform, the second-level platform and the third-level platform are all provided with storage frames.

[0008] A better technical solution of the utility model is as follows: both the front and rear sides of the top platform are fixedly connected with a fixing plate, the lower surface of the fixing plate is installed with a height adjustment mechanism, and the bottom of the height adjustment mechanism is installed with a bottom plate.

[0009] A better technical solution of the utility model: the height adjustment mechanism includes a fixed column, a movable column, and a third oil cylinder, the fixed column is installed on the upper surface of the base plate, the movable column is installed on the lower surface of the fixed plate, the third oil cylinder is installed inside the fixed column, and the top of the third oil cylinder is fixedly connected to the bottom of the movable column.

[0010] A better technical solution of the utility model is as follows: a slide rail is fixedly connected to the front side of the base plate, a moving block is movably connected to the outer surface of the slide rail, and a fourth oil cylinder is installed between the moving block and the base plate.

[0011] A better technical solution of the utility model is as follows: a clamping block is fixedly connected to the back side of the bottom plate, and the structure of the clamping block is an inverted trapezoidal structure.

[0012] The utility model has the following beneficial effects:

[0013] (1) The utility model symmetrically arranges a first-level platform, a second-level platform and a third-level platform on both sides of the top platform. When in use, the first-level platform, the second-level platform and the third-level platform can be controlled by a cylinder to be unfolded and stored. When unfolded, seven working platforms can be formed. When stored, the first-level platform, the second-level platform and the third-level platform can be stored between the top platform and the bottom plate to reduce the volume. The multi-level folding mobile working platform for assembling super-large diameter shield segments can be folded and unfolded, and can adjust its own state according to actual needs. A platform for workers to stand is constructed on the tunnel segments, which is easy to use.

[0014] (2) The utility model is provided with a slide rail, a moving block, a fourth oil cylinder and a clamping block. When in use, the moving block and the clamping block on the slide rail are installed on the track. The fourth oil cylinder can drive the moving block to move forward and backward along the slide rail, so that the bottom plate can slide on the track, which is convenient for the working platform to move in the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model from the first perspective;

[0016] Figure 2 for Figure 1 A magnified view of the structure at center;

[0017] Figure 3 for Figure 1 A magnified view of the structure at B in the middle;

[0018] Figure 4 This is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0019] Figure 5 This is a cross-sectional view of the internal structure of the utility model from the first viewing angle;

[0020] Figure 6This is a cross-sectional view of the internal structure of the utility model from a second viewing angle;

[0021] Figure 7 for Figure 6 A magnified view of the structure at C in the middle;

[0022] Figure 8 This is a reference diagram used in this utility model.

[0023] Legend: 1. Top platform; 2. First-level platform; 3. Second-level platform; 4. Third-level platform; 41. Limiting plate; 5. First cylinder; 6. Second cylinder; 7. Heightening platform; 8. Fixed plate; 9. Height adjustment mechanism; 901. Fixed column; 902. Moving column; 903. Third cylinder; 10. Bottom plate; 11. Slide rail; 12. Moving block; 13. Fourth cylinder; 14. Block. DETAILED DESCRIPTION

[0024] Reference Figure 1-8 The utility model provides a multi-stage folding mobile working platform for assembling super-large diameter shield segments: it includes a top platform 1, both sides of the top platform 1 are movably connected with a first-level platform 2, the first-level working platform 2 is designed with a middle step in the slope section to facilitate the operation in the 2-3 point and 9-10 point areas, the first-level platform 2 is movably connected to a second-level platform 3 at one end away from the top platform 1, the second-level platform 3 is movably connected to a third-level platform 4 at one end away from the first-level platform 2, a first oil cylinder 5 is installed between the top platform 1 and the first-level platform 2, a second oil cylinder 6 is installed between the first-level platform 2 and the second-level platform 3, and the first oil cylinder 5 is connected to the second-level platform 3. The second oil cylinder 6 is connected to the shield machine auxiliary system. A hydraulic control valve is configured at each platform position to control the extension and retraction of the oil cylinder. The platform can be unfolded and folded by controlling the operation of the oil cylinder. The side wall of the tertiary platform 4 is fixedly connected with a limiting card plate 41. The outer surface of the limiting card plate 41 fits with the lower surface of the secondary platform 3. The tertiary platform 4 will flip downward under the action of gravity. At this time, the limiting card plate 41 is blocked by the secondary platform 3, so that the position of the tertiary platform 4 can be limited. A heightening platform 7 is installed on the upper surface of the top platform 1. The heightening platform 7 meets the operating height requirement of the arc-shaped center position of the shield tunnel.

[0025] Implementation example Figure 1 As shown, guardrails are fixedly connected to the upper surfaces of the first-level platform 2, the second-level platform 3, and the third-level platform 4 to provide protection. The guardrail of the second-level platform is not in the same plane as the first-level and third-level guardrails to prevent interference during storage. Storage frames are provided on the upper surfaces of the first-level platform 2, the second-level platform 3, and the third-level platform 4. The width of the work frame is 30 cm, and the work frame is placed on the side of the platform adjacent to the guardrail to facilitate the placement of some commonly used tools without affecting the normal use of the platform.

[0026] The front and rear sides of the top platform 1 are fixedly connected with a fixed plate 8, the lower surface of the fixed plate 8 is installed with a height adjustment mechanism 9, the bottom of the height adjustment mechanism 9 is installed with a bottom plate 10, the height adjustment mechanism 9 includes a fixed column 901, a movable column 902, and a third oil cylinder 903, the fixed column 901 is installed on the upper surface of the bottom plate 10, the movable column 902 is installed on the lower surface of the fixed plate 8, the third oil cylinder 903 is installed inside the fixed column 901, and the top of the third oil cylinder 903 is fixedly connected to the bottom of the movable column 902. The height of the working platform can be adjusted by the operation of the third oil cylinder 903, and the adjustable height is generally 1.5-2m.

[0027] A slide rail 11 is fixedly connected to the front of the base plate 10, and a moving block 12 is movably connected to the outer surface of the slide rail 11. A fourth oil cylinder 13 is installed between the moving block 12 and the base plate 10. A clamping block 14 is fixedly connected to the back of the base plate 10. The structure of the clamping block 14 is an inverted trapezoidal structure. A track is laid in the moving area of ​​the shield machine working platform. The track adopts an inverted trapezoidal structure, and a clamping groove corresponding to the slide track is arranged at the bottom of the moving area; the inverted trapezoidal structures are engaged with each other to achieve an anti-tilting effect and prevent horizontal displacement. After that, the fourth oil cylinder 13 can drive the base plate to move on the track. Generally, the moving distance is controlled at about 2.5m, covering the shield tail 2 ring segment re-tightening operation area.

[0028] Working principle: The first-level platform 2, the second-level platform 3, and the third-level platform 4 are controlled by the cylinder to be unfolded and stored. When unfolded, seven working platforms can be formed. When stored, the first-level platform 2, the second-level platform 3, and the third-level platform 4 can be stored between the top platform 1 and the bottom plate 10 to reduce the volume. The multi-stage folding mobile working platform used for assembling ultra-large diameter shield segments can be folded and unfolded, and can adjust its own state according to actual needs. A platform for workers to stand is constructed on the tunnel segments for easy use.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage folding mobile working platform for assembling super-large diameter shield segments, comprising a top platform (1), characterized in that: The left and right sides of the top platform (1) are movably connected to a first-level platform (2); the end of the first-level platform (2) away from the top platform (1) is movably connected to a second-level platform (3); the end of the second-level platform (3) away from the first-level platform (2) is movably connected to a third-level platform (4); a first oil cylinder (5) is installed between the top platform (1) and the first-level platform (2); a second oil cylinder (6) is installed between the first-level platform (2) and the second-level platform (3); a side wall of the third-level platform (4) is fixedly connected to a limiting clamping plate (41); the outer surface of the limiting clamping plate (41) is in contact with the lower surface of the second-level platform (3).

2. The multi-stage folding mobile working platform for assembling super-large diameter shield segments according to claim 1 is characterized in that: A heightened platform (7) is installed on the upper surface of the top platform (1), and the primary platform (2), secondary platform (3) and tertiary platform (4) on both sides of the top platform are symmetrically arranged.

3. The multi-stage folding mobile working platform for assembling super-large diameter shield segments according to claim 1 is characterized in that: The upper surfaces of the first-level platform (2), the second-level platform (3) and the third-level platform (4) are all fixedly connected with guardrails, and the upper surfaces of the first-level platform (2), the second-level platform (3) and the third-level platform (4) are all provided with storage frames.

4. The multi-stage folding mobile working platform for assembling super-large diameter shield segments according to claim 1 is characterized in that: The front and rear side edges of the top platform (1) are both fixedly connected with a fixing plate (8), a height adjustment mechanism (9) is installed on the lower surface of the fixing plate (8), and a bottom plate (10) is installed at the bottom of the height adjustment mechanism (9).

5. The multi-stage folding mobile working platform for assembling super-large diameter shield segments according to claim 4 is characterized in that: The height adjustment mechanism (9) comprises a fixed column (901), a movable column (902), and a third oil cylinder (903); the fixed column (901) is mounted on the upper surface of the base plate (10); the movable column (902) is mounted on the lower surface of the fixed plate (8); the third oil cylinder (903) is mounted inside the fixed column (901), and the top of the third oil cylinder (903) is fixedly connected to the bottom of the movable column (902).

6. The multi-stage folding mobile working platform for assembling super-large diameter shield segments according to claim 4 is characterized in that: The front surface of the base plate (10) is fixedly connected to a slide rail (11), the outer surface of the slide rail (11) is movably connected to a moving block (12), and a fourth oil cylinder (13) is installed between the moving block (12) and the base plate (10).

7. The multi-stage folding mobile working platform for assembling super-large diameter shield segments according to claim 4 is characterized in that: A clamping block (14) is fixedly connected to the back side of the base plate (10), and the structure of the clamping block (14) is an inverted trapezoidal structure.

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