A subway floating slab anti-displacement spiral top device and installation method

Abstract

The present invention discloses a subway floating plate anti-displacement spiral top device and installation method, comprising a spiral top, a mounting frame and an adjustable length adjustment rod assembly, the mounting frame is provided with an adjustment rod mounting part and a spiral top mounting part that can be raised and lowered, the spiral top mounting part is supported by the mounting frame, the right end of the spiral top is provided with a top plate for abutting against the floating plate, the middle part of the spiral top is hinged with the upper end of the spiral top mounting part, and the two ends of the adjustment rod assembly are respectively hinged with the left end of the spiral top and the adjustment rod mounting part. During installation, the mounting frame is first fixed to the subway pipe segment using expansion bolts, and then the spiral top mounting part is raised and lowered to adjust the height of the spiral top, and then the length of the adjustment rod assembly is adjusted so that the right end face of the spiral top top plate is parallel to the floating plate, and the spiral top is adjusted so that the right end face of the top plate is abutted against the floating plate, so that the top plate of the spiral top is tightly against the floating plate. The present invention solves the problem of poor reliability of lateral positioning of the floating plate, reduces the construction difficulty, and improves the construction quality at the same time.

Description

Technical Field

[0001] The invention belongs to the technical field of self-compacting concrete pouring of subway roadbeds, and in particular relates to a subway floating slab anti-displacement spiral top device and an installation method during curved section construction. Background Art

[0002] During the construction of the subway monolithic trackbed, it is necessary to pour self-compacting concrete between the base and the floating plate. In order to prevent the floating plate from floating up and moving laterally during the pouring of the self-compacting concrete, it is necessary to use a reaction frame and a pull rod to position it. However, during the construction of the curved section of the subway monolithic trackbed, when one side of the base is higher than the other side, in order to make the size of the subway monolithic trackbed of the poured self-compacting concrete consistent, the floating plate needs to be placed and tilted in accordance with the base. When pouring the self-compacting concrete, the floating plate will generate a large moving force toward the lower side, resulting in poor reliability of the lateral positioning of the floating plate, which increases the difficulty of construction. Therefore, during the construction of the curved section of the subway monolithic trackbed, preventing the lateral movement of the floating plate becomes an urgent problem to be solved. Summary of the invention

[0003] In order to solve at least one of the above technical problems, the present invention provides a subway floating slab anti-displacement spiral top device and an installation method.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] The present invention provides a subway floating plate anti-displacement spiral top device, comprising a spiral top, a mounting frame and an adjustable length adjustment rod assembly, the mounting frame is provided with an adjustment rod mounting part and a liftable spiral top mounting part, the spiral top mounting part is supported by the mounting frame, the right end of the spiral top is provided with a top plate for supporting the floating plate, the middle part of the spiral top is hinged to the upper end of the spiral top mounting part, and the two ends of the adjustment rod assembly are respectively hinged to the left end of the spiral top and the adjustment rod mounting part.

[0006] As a further improvement, the mounting frame includes a base plate and a column erected on the base plate, the adjusting rod mounting portion is arranged on the base plate, and the spiral top mounting portion is liftably mounted on the column.

[0007] As a further improvement, the column is provided with at least two column pin holes at intervals along its length direction, and the spiral top mounting portion is provided with a mounting pin hole corresponding to the column pin hole, and the mounting pin hole and the column pin hole are fixed by inserting a positioning pin.

[0008] As a further improvement, a screw hole perpendicular to the axis of the mounting pin hole is provided at the lower end of the spiral mounting portion, and a tightening screw which can be mounted on the side of the column is threaded into the screw hole.

[0009] As a further improvement, the adjusting rod assembly includes a tensioning screw, the two ends of which are telescopically provided with an upper screw and a lower screw that are coaxial and have opposite spiral directions, and the upper screw and the lower screw are respectively screwed with an upper articulated nut and a lower articulated nut, the upper articulated nut is hinged to the left end of the spiral top, and the lower articulated nut is hinged to the adjusting rod mounting portion.

[0010] As a further improvement, an adjusting handle is provided on the spiral top.

[0011] The present invention provides a subway floating plate anti-displacement spiral top device, which comprises a spiral top, a mounting frame and an adjustable rod assembly with adjustable length. The mounting frame is provided with an adjusting rod mounting part and a liftable spiral top mounting part, the spiral top mounting part is supported by the mounting frame, the right end of the spiral top is provided with a top plate for supporting the floating plate, the middle part of the spiral top is hinged to the upper end of the spiral top mounting part, and the two ends of the adjusting rod assembly are respectively hinged to the left end of the spiral top and the adjusting rod mounting part. During installation, expansion bolts are first used to fix the mounting frame on the subway segment, and then the spiral top mounting part is raised and lowered to adjust the height of the spiral top, and then the length of the adjusting rod assembly is adjusted to make the right end surface of the top plate of the spiral top parallel to the floating plate, and the spiral top is adjusted to make the right end surface of the top plate abut against the floating plate, so that the top plate of the spiral top is tightly pressed against the floating plate. In the construction of the curved section of the subway integral roadbed, when the self-compacting concrete is poured between the base and the floating plate, the present invention prevents the floating plate from moving sideways, solves the problem of poor reliability of lateral positioning of the floating plate, and has a simple mounting structure, which can effectively reduce the construction difficulty and improve the construction quality.

[0012] The present invention provides a method for installing a subway floating slab anti-displacement spiral top device, which includes any one of the improvements of the above-mentioned subway floating slab anti-displacement spiral top device. The installation method is as follows:

[0013] S1. Install and fix the mounting frame on the subway segment;

[0014] S2, lifting and lowering the screw top installation part to adjust the height of the screw top;

[0015] S3. Adjust the length of the adjusting rod assembly so that the right end surface of the top plate is parallel to the floating plate;

[0016] S4. Adjust the spiral top so that the right end surface of the top plate is against the floating plate, pressing the floating plate tightly.

[0017] Since the above technical contents are adopted, it should have the same or corresponding technical effects as a subway floating plate anti-displacement spiral top device, so it will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the mounting plate of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the adjusting rod assembly of the present invention.

[0022] In the figure: 1, spiral top; 3, adjusting rod assembly; 4, subway segment; 5, floating plate; 6, base; 7, self-compacting concrete; 11, top plate; 12, adjusting handle; 21, adjusting rod mounting portion; 22, spiral top mounting portion; 23, bottom plate; 24, column; 221, mounting pin hole; 222, screw hole; 223, tightening screw; 31, tightening screw; 32, upper screw; 33, lower screw; 34, upper articulated nut; 35, lower articulated nut. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0024] The present invention involves directional indications (such as up, down, left, right, front, back...), Figure 1 For example, upward on the horizontal paper surface is “up”, downward on the horizontal paper surface is “down”, left on the horizontal paper surface is “left”, and right on the horizontal paper surface is “right”. If the specific posture changes, the directional indication will also change accordingly.

[0025] Combination Figure 1 As shown, an embodiment of the present invention provides a subway floating plate anti-displacement spiral top device, including a spiral top 1, a mounting frame and an adjustable rod assembly 3 with an adjustable length. The adjusting rod mounting part 21 and the liftable spiral top mounting part 22 are both arranged on the mounting frame, and the liftable spiral top mounting part 22 is supported by the mounting frame. The right end of the spiral top 1 is provided with a top plate 11 for supporting the floating plate 5. The spiral top 1 converts the rotary motion into linear motion through a spiral transmission. The spiral transmission can be a force transmission spiral, a conduction spiral and an adjustment spiral. The spiral top 1 is provided with an adjustment handle 12. The adjustment handle 12 is operated to make the spiral top 1 perform a rotary motion. The linear motion converted from the rotary motion can adjust the distance between the right end face of the top plate 11 and the floating plate 5.

[0026] like Figure 3 As shown, the adjusting rod assembly 3 includes a tensioning screw 31, and the two ends of the tensioning screw 31 are respectively telescopically provided with an upper screw 32 and a lower screw 33 which are coaxial and have opposite spiral directions. The upper screw 32 and the lower screw 33 are respectively screwed with an upper articulated nut 34 and a lower articulated nut 35. The upper articulated nut 34 is hinged to the left end of the spiral top 1, and the lower articulated nut 35 is hinged to the adjusting rod mounting portion 21. The tensioning screw 31 is rotated to extend or retract the upper screw 32 and the lower screw 33, and the screw connection position of the upper articulated nut 34 and the upper screw 32 and / or the screw connection position of the lower articulated nut 35 and the lower screw 33 is changed to adjust the length of the adjusting rod assembly 3.

[0027] The mounting frame is provided with an adjusting rod mounting portion 21 and a movably mounted spiral top mounting portion 22. Specifically, the mounting frame includes a bottom plate 23 and a column 24 erected on the bottom plate 23, the adjusting rod mounting portion 21 is arranged on the bottom plate 23, and the spiral top mounting portion 22 is movably mounted on the column 24, so as to facilitate the installation or removal of the adjusting rod mounting portion 21 and the adjusting rod assembly 3, and the spiral top mounting portion 22 and the spiral top 1.

[0028] The middle part of the spiral top 1 is hinged to the upper end of the spiral top mounting part 22, and the two ends of the adjusting rod assembly 3 are respectively hinged to the left end of the spiral top 1 and the adjusting rod mounting part 21. The connecting lines of the hinge point between the spiral top 1 and the spiral top mounting part 22, the hinge point between the adjusting rod assembly 3 and the left end of the spiral top 1, and the hinge point between the adjusting rod assembly 3 and the adjusting rod mounting part 21 form a triangle.

[0029] During installation, first use expansion bolts to fix the mounting frame on the subway segment 4, then lift the spiral top mounting part 22 to adjust the height of the spiral top 1, and then adjust the length of the adjusting rod assembly 3 to make the right end surface of the top plate 11 of the spiral top 1 parallel to the floating plate 5, and adjust the spiral top 1 to make the right end surface of the top plate 11 abut against the floating plate 5, so that the top plate 11 of the spiral top 1 is tightly against the floating plate 5. In the construction of the curved section of the subway integral roadbed, when the self-compacting concrete 7 is poured between the base 6 and the floating plate 5, the lateral movement of the floating plate 5 is prevented, and the problem of poor lateral positioning reliability of the floating plate 5 is solved. In addition, the installation structure is simple, which can effectively reduce the construction difficulty and improve the construction quality.

[0030] As a further preferred embodiment, at least two column pin holes are arranged at intervals along the length direction of the column 24 at the upper part, and a mounting pin hole 221 corresponding to the column pin hole is arranged at the lower part of the spiral top mounting part 22, and the mounting pin hole 221 and the column pin hole are fixed by inserting and fixing by positioning pins. When the spiral top mounting part 22 needs to be raised or lowered to adjust the height of the spiral top, the spiral top mounting part 22 is moved up and down, and the mounting pin hole 221 is aligned with one of the at least two column pin holes, and then fixed by inserting and fixing with positioning pins.

[0031] As a further preferred embodiment, the lower end of the spiral top mounting portion 22 is provided with a screw hole 222 which is perpendicular to the axis of the mounting pin hole 221, and a tightening screw 223 which can be mounted on the side of the column 24 is threaded in the screw hole 222 to prevent the spiral top mounting portion 22 from swaying left and right due to a gap between the two when the spiral top mounting portion 22 is mounted on the column 24.

[0032] The embodiment of the present invention further provides an installation method of a subway floating plate anti-displacement spiral top device, including any preferred implementation of a subway floating plate anti-displacement spiral top device, and in the case of no conflict, the embodiments and the features in the embodiments can be combined with each other, and should have the same or corresponding technical effects as a subway floating plate anti-displacement spiral top device, which will not be described in detail here. The installation method is as follows:

[0033] S1. Install and fix the mounting frame on the subway segment 4. The mounting frame is provided with a mounting frame mounting hole. Use expansion bolts to pass through the mounting frame mounting hole to fix the mounting frame to the subway segment 4.

[0034] S2, lifting and lowering the spiral top mounting part 22 to adjust the height of the spiral top 1 so that the axis of the spiral top 1 is perpendicular to the floating plate 5;

[0035] S3, adjusting the length of the adjusting rod assembly 3 so that the right end surface of the top plate 11 of the spiral top 1 is parallel to the floating plate 5, so as to avoid the distance between the floating plate 5 and the base 6 changing during the construction of the curved section of the subway integral roadbed, thereby affecting the construction quality;

[0036] S4. Adjust the spiral top 1 so that the right end surface of the top plate 11 is against the floating plate 5, so that the top plate 11 of the spiral top 1 is pressed against the floating plate 5 to prevent the floating plate 5 from moving sideways.

[0037] Many specific details are set forth in the above description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein, and therefore, they should not be construed as limiting the scope of protection of the present invention.

[0038] In summary, although the present invention lists the above-mentioned preferred embodiments, it should be noted that although technicians in this field can make various changes and modifications, unless such changes and modifications deviate from the scope of the present invention, they should be included in the protection scope of the present invention.

Claims

1. A subway floating slab anti-displacement spiral top device, characterized in that: The invention comprises a spiral top (1), a mounting frame and an adjustable rod assembly (3) with adjustable length, wherein the mounting frame is provided with an adjustable rod mounting portion (21) and a liftable spiral top mounting portion (22), the spiral top mounting portion (22) being supported by the mounting frame, the right end of the spiral top (1) is provided with a top plate (11) for supporting a floating plate (5), the middle part of the spiral top (1) is hinged to the upper end of the spiral top mounting portion (22), and the two ends of the adjustable rod assembly (3) are respectively hinged to the left end of the spiral top (1) and the adjustable rod mounting portion (21); The mounting frame comprises a bottom plate (23) and a column (24) erected on the bottom plate (23); the adjusting rod mounting portion (21) is arranged on the bottom plate (23); and the spiral top mounting portion (22) is movably sleeved on the column (24); The column (24) is provided with at least two column pin holes spaced apart along its length direction, the screw top mounting portion (22) is provided with a mounting pin hole (221) corresponding to the column pin hole, and the mounting pin hole (221) and the column pin hole are fixed by inserting a positioning pin; The lower end of the spiral mounting portion (22) is provided with a screw hole (222) perpendicular to the axis of the mounting pin hole (221), and a tightening screw (223) which can be mounted on the side of the column (24) is screwed into the screw hole (222).

2. A subway floating slab anti-displacement spiral top device as claimed in claim 1, characterized in that: The adjusting rod assembly (3) comprises a tensioning screw (31), and the two ends of the tensioning screw (31) are respectively and telescopically provided with an upper screw (32) and a lower screw (33) which are coaxial and have opposite spiral directions. The upper screw (32) and the lower screw (33) are respectively screwed with an upper articulated nut (34) and a lower articulated nut (35). The upper articulated nut (34) is hinged to the left end of the spiral top (1), and the lower articulated nut (35) is hinged to the adjusting rod mounting portion (21).

3. A subway floating slab anti-displacement spiral top device as claimed in claim 2, characterized in that: The screw top (1) is provided with an adjustment handle (12).

4. A method for installing a subway floating slab anti-displacement spiral top device, characterized in that: It comprises a subway floating slab anti-displacement spiral top device as claimed in any one of claims 1 to 3, and its installation method is as follows: S1, installing and fixing the mounting frame on the subway segment (4); S2, lifting and lowering the screw top mounting portion (22) to adjust the height of the screw top (1); S3, adjusting the length of the adjusting rod assembly (3) so that the right end surface of the top plate (11) is parallel to the floating plate (5); S4. Adjust the spiral top (1) so that the right end surface of the top plate (11) is against the floating plate (5), thereby pressing the floating plate (5) tightly.

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