Ladder cage for pier column construction

Abstract

The utility model relates to a ladder cage for pier column construction, and belongs to the field of bridge construction, the ladder cage comprises a supporting framework and multiple layers of working platform plates, the multiple working platform plates and the supporting framework are fixedly connected and are arranged in the vertical direction, and working holes for pier columns to penetrate through are formed in the middles of the working platform plates; a compensation plate is movably connected to the position, close to the pier column, of the working platform plate, the contour of the working hole is rectangular, the section of the pier column is round, and the compensation plate is used for filling the corner space of the working hole. When a template of a pier column is dismantled or installed, the compensation plate is moved to a working space which does not influence a working hole, and when people walk on the working platform plate frequently, the compensation plate is moved to a position for filling a corner space of the working hole, so that the working safety on the working platform plate of the ladder cage is improved.

Description

Technical Field

[0001] This application relates to the field of bridge construction, and particularly to a ladder cage for pier column construction. Background Art

[0002] A pier column is a lower load-bearing structure in civil engineering for supporting the upper structure. The cross-section of a pier column is mostly circular, and there are also special-shaped pier columns such as oval, square, curved, and parabolic. It is an important component in projects such as highway bridges, railway bridges, sidewalks, overpasses, ramp bridges, and skybridges.

[0003] In traditional standard ladder cages for pier column construction, they are built around the pier column, that is, the pier column passes through each working platform of the ladder cage. To facilitate the installation and removal of the pier column formwork on-site, there is a certain space left between the upper working platform and the pier column. For example, for a pier column with a circular cross-section, the inner edge contour of each working platform is square, and the side length of the square is greater than the diameter of the circular cross-section of the pier column. Thus, a non-negligible vacant space is formed between the inner edge of the working platform and the pier column. There is a potential safety hazard that on-site workers may fall due to carelessness or work mistakes when going up and down the ladder cage or during the installation of formwork and concrete pouring, which may easily cause accidents such as casualties of on-site personnel. Utility Model Content

[0004] To improve the above problems, this application provides a ladder cage for pier column construction.

[0005] The ladder cage for pier column construction provided by this application adopts the following technical solutions:

[0006] A ladder cage for pier column construction includes a support framework and multiple working platform plates. The multiple working platform plates are fixedly connected to the support framework and arranged in the vertical direction. A working hole for the pier column to pass through is opened in the middle of the working platform plate. A compensation plate is movably connected near the pier column of the working platform plate. The contour of the working hole is rectangular, and the cross-section of the pier column is circular. The compensation plate is used to fill the corner space of the working hole.

[0007] Preferably, there are four compensation plates, and each single compensation plate is located at a corner of the working hole. One side of the compensation plate is hinged to the working platform plate, and the hinge axis is in the horizontal direction.

[0008] Preferably, a limiting strip is fixedly connected to the edge of the compensation plate. When the compensation plate is located in the working hole, the limiting strip abuts against the upper plate surface of the working plate.

[0009] Preferably, a reinforcing mesh is fixedly connected to the plate surface of the compensation plate. When the compensation plate is located in the working hole, the reinforcing mesh is located below the compensation plate.

[0010] Preferably, it further includes an inner edge guardrail, which is located in the working hole and is detachably connected to the working platform plate.

[0011] Preferably, an installation sleeve is fixedly connected to the working platform plate and the hole wall of the working hole. The installation sleeve is located between two adjacent compensation plates. The inner edge guardrail includes a cross bar and a vertical bar fixedly connected to each other, and the vertical bar is inserted into the installation sleeve.

[0012] Preferably, a limit bolt is threadedly connected to the installation sleeve, a limit hole is formed in the vertical bar, the end of the limit bolt is inserted into the limit hole, and the nut of the limit bolt is located above the side of the compensation plate away from its hinge axis.

[0013] This application includes at least one of the following beneficial technical effects:

[0014] 1. Through the setting of the compensation plate, when removing or installing the formwork of the pier column, the compensation plate is moved to a position where it does not affect the working space of the working hole. When there is frequent personnel movement on the working platform plate, the compensation plate is moved to a position to fill the corner space of the working hole, improving the operation safety on the working platform plate;

[0015] 2. Through the setting of the inner edge guardrail, while further improving the safety of the working hole and reducing the risk of falling by mistake, the limit bolt can play a role in preventing the working plate from retreating and limiting, thereby improving the state stability of the compensation plate. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of the ladder cage for pier column construction in the embodiment of the present application.

[0017] Figure 2 is a schematic diagram of the structure of the working platform plate, the compensation plate and the inner edge guardrail in the embodiment of the present application.

[0018] Figure 3 is a schematic diagram of the structure when one of the compensation plates is opened in the embodiment of the present application.

[0019] Description of the reference numerals: 1, support skeleton; 11, working platform plate; 12, pier column; 13, working hole; 14, personnel walking ladder; 2, compensation plate; 21, limit strip; 22, reinforcement mesh; 3, inner edge guardrail; 31, cross bar; 32, vertical bar; 321, limit hole; 4, installation sleeve; 41, limit bolt. Detailed Description of the Invention

[0020] The following is a further detailed description of the present application in conjunction with the attached Figures 1-3 drawings.

[0021] The embodiment of the present application discloses a ladder cage for pier column construction, asFigure 1 As shown, it includes a support framework 1 and multiple working platform plates 11. The support framework 1 is fixedly established on the ground. A plurality of working platform plates 11 are fixedly connected to the support framework 1 and arranged in the vertical direction. A man ladder 14 is fixedly connected between the support framework 1 and between every two adjacent layers of working platform plates 11. A pier column 12 is located inside the support framework 1. A working hole 13 for the pier column 12 to pass through is provided in the middle of the working platform plate 11; the cross-section of the pier column 12 is circular, and the outer contour of the working platform plate 11 and the contour of the working hole 13 are both square. The side length of the working hole 13 is greater than the diameter of the pier column 12, that is, there is a large gap between the side wall of the pier column 12 and the aperture of the working hole 13. A compensation plate 2 is movably connected near the pier column 12 of the working platform plate 11. The compensation plate 2 is used to fill the corner space of the working hole 13.

[0022] As Figure 1 、 2 and shown in FIG. 3, the number of compensation plates 2 is four. The plate surface shape of the compensation plate 2 is approximately an isosceles right triangle, and its hypotenuse is arc-shaped. One right angle of a single compensation plate 2 corresponds to a corner of the working hole 13; one of the right sides of the compensation plate 2 and the working plate are hinged by a hinge. The hinge is located above the two plates, and the hinge axis is a horizontal line. The other right side is fixedly provided with a limiting half bar by welding. When the compensation plate 2 is flipped into the working hole 13 completely by itself, the limiting half bar abuts against the upper plate surface of the working plate. At this time, the plate surface of the compensation plate 2 is parallel to the working platform plate 11, and the compensation plate 2 cannot be flipped further. A reinforcing mesh 22 is fixedly connected to the plate surface of the compensation plate 2. When the compensation plate 2 is located in the working hole 13, the reinforcing mesh 22 is located below the compensation plate 2, which can improve the anti-bending deformation strength of the compensation plate 2 and improve safety.

[0023] As Figure 2 and 3As shown, an inner edge guardrail 3 is further provided on the working platform plate 11. The inner edge guardrail 3 is located within the working hole 13 and is detachably connected to the working platform plate 11. An installation sleeve 4 is welded to the working platform plate 11 and the hole wall of the working hole 13. The installation sleeve 4 is located between two adjacent compensation plates 2, and the number of installation sleeves 4 between two adjacent compensation plates 2 is two. There are four inner edge guardrails 3. The inner edge guardrail 3 includes a cross bar 31 and a vertical bar 32 that are fixedly connected to each other. The number of cross bars 31 and vertical bars 32 of a single inner edge guardrail 3 is two. The two vertical bars 32 are respectively located at both ends of the cross bar 31. The lower end of a single vertical bar 32 is inserted into a single installation sleeve 4. A limit bolt 41 is threadedly connected to the installation sleeve 4. The axial direction of the limit bolt 41 is horizontal. A limit hole 321 is provided on the vertical bar 32, and the end of the limit bolt 41 is inserted into the limit hole 321. The nut of the limit bolt 41 is located above the side of the compensation plate 2 away from its hinge axis. When the compensation plate 2 is in the working hole 13, the limit bolt 41 is screwed in. When the compensation plate 2 is turned upward by 2-3°, it is blocked by the limit bolt 41. In this way, the state stability of the compensation plate 2 when filling the working hole 13 can be improved, thereby improving safety.

[0024] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A ladder cage for pier column construction, comprising a support frame (1) and a multi-layer working platform plate (11), wherein a plurality of the working platform plates (11) are fixedly connected to the support frame (1) and arranged in a vertical direction, and a working hole (13) for a pier column (12) to pass through is provided in the middle of the working platform plate (11), characterized in that: The working platform plate (11) is movably connected to a compensation plate (2) near the pier (12); the outline of the working hole (13) is rectangular, the cross-section of the pier (12) is circular, and the compensation plate (2) is used to fill the corner space of the working hole (13).

2. A ladder cage for pier construction according to claim 1, characterized in that: There are four compensation plates (2), and a single compensation plate (2) is located at a corner of the working hole (13). One side of the compensation plate (2) is hinged to the working platform plate (11), and the hinge axis is in the horizontal direction.

3. A ladder cage for pier construction according to claim 2, characterized in that: The edge of the compensation plate (2) is fixedly connected to a limiting strip (21); when the compensation plate (2) is located in the working hole (13), the limiting strip (21) abuts against the upper surface of the working plate.

4. A ladder cage for pier construction according to claim 3, characterized in that: A reinforcing mesh rib (22) is fixedly connected to the plate surface of the compensation plate (2); when the compensation plate (2) is located in the working hole (13), the reinforcing mesh rib (22) is located below the compensation plate (2).

5. A ladder cage for pier construction according to claim 3 or 4, characterized in that: It also comprises an inner edge guardrail (3), wherein the inner edge guardrail (3) is located in the working hole (13) and is detachably connected to the working platform plate (11).

6. A ladder cage for pier construction according to claim 5, characterized in that: A mounting sleeve (4) is fixedly connected on the working platform plate (11) and on the hole wall of the working hole (13); the mounting sleeve (4) is located between two adjacent compensation plates (2); the inner edge guardrail (3) comprises a cross bar (31) and a vertical bar (32) fixedly connected to each other; the mounting sleeve (4) is for the vertical bar (32) to be inserted into.

7. A ladder cage for pier construction according to claim 6, characterized in that: A limiting bolt (41) is threadedly connected to the mounting sleeve (4), a limiting hole (321) is provided on the vertical rod (32), an end of the limiting bolt (41) is inserted into the limiting hole (321), and a nut of the limiting bolt (41) is located above a side of the compensation plate (2) away from its own hinge axis.

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