Prestress construction platform for LNG low-temperature storage tank barrel wall

Abstract

The invention relates to the technical field of LNG low-temperature storage tank construction, in particular to an LNG low-temperature storage tank barrel wall prestress construction platform which comprises a barrel wall, a plurality of wall attaching assemblies, a guide rail frame, a driving frame, a base and a working platform. A base is arranged at the bottom end of the guide rail frame and fixedly installed on the ground, a driving frame capable of vertically moving along the guide rail frame is installed on the guide rail frame, a working platform is arranged at the top end of the driving frame, and a safety protection assembly is arranged at the top end of the working platform.

Description

Technical Field

[0001] The present invention relates to the technical field of LNG cryogenic storage tank construction, and particularly relates to a prestressed construction platform for the cylindrical wall of an LNG cryogenic storage tank. Background Technique

[0002] In the prestressed construction of the cylindrical wall of an LNG cryogenic storage tank, during the prestressed tendon threading and tensioning stage, a formwork platform is installed on both sides of the buttress column and supplemented with a steel pipe and coupler scaffold as the operation platform. During the grouting and anchor sealing stage, the formwork platform is supplemented with a movable operation frame as the construction platform. During the operation of this operation platform, it needs to be lifted and installed multiple times, and the safety risk is relatively high. Summary of the Invention

[0003] The purpose of the present invention is to provide a prestressed construction platform for the cylindrical wall of an LNG cryogenic storage tank to solve the technical problems existing in the above background technique.

[0004] To achieve the above purpose, the technical solution of the present invention is as follows:

[0005] A prestressed construction platform for the cylindrical wall of an LNG cryogenic storage tank includes: a cylindrical wall, an attached wall component, a guide rail frame, a driving frame, a base, and a working platform. There are several attached wall components. The guide rail frame is vertically and fixedly installed on the wall of the cylindrical wall through several attached wall components. A base is provided at the bottom end of the guide rail frame, and the base is fixedly installed on the ground. A driving frame capable of vertically moving along the guide rail frame is installed on the guide rail frame. A working platform is provided at the top end of the driving frame, and a safety protection component is provided at the top end of the working platform.

[0006] Further, the guide rail frame includes: vertical rods, horizontal rods, diagonal tension rods, and fasteners. There are four vertical rods, and two vertical rods are symmetrically arranged on the left and right respectively, and the two vertical rods on the same side of the left and right are symmetrically arranged front and back; the vertical rods are fixedly spliced in sequence from bottom to top by several main chord rods. Two horizontal rods are symmetrically fixedly connected to the upper and lower sides between the two main chord rods that are symmetrically arranged front and back on the same side, and a diagonal tension rod is also fixedly connected between the two horizontal rods. The two horizontally symmetrically arranged horizontal rods are fixedly connected through fasteners; four fixed vertical rods are fixedly connected to the top end of the base, and the four main chord rods at the lowermost end are respectively fixedly connected to the four fixed vertical rods.

[0007] Further, the attached wall component includes: a tie rod connection cone, an attached wall frame, and an attached wall frame fastener. There are two tie rod connection cones. The attached wall frame is fixedly connected to the wall of the cylindrical wall through the two tie rod connection cones. An attached wall frame fastener is provided on the attached wall frame, and the attached wall frame fastener is fastened and fixed to the vertical rod on the side close to the wall of the cylindrical wall.

[0008] Further, the tie rod connection cone includes: a positioning cone, a high-strength tie rod, and a triangular nut. Two perforations are symmetrically formed on the attached wall frame. The positioning cone is pre-embedded and fixed in the cylindrical wall. One end of the high-strength tie rod is threadedly connected to the positioning cone and extends into the interior of the cylindrical wall. The other end of the high-strength tie rod movably passes through the corresponding perforation on the attached wall frame and is threadedly connected to a triangular nut on the side of the attached wall frame away from the cylindrical wall.

[0009] Further, the driving frame includes: a main beam, a climbing frame, diagonal braces, safety hooks, a driving motor, and a driving gear. The middle part of the end of the climbing frame away from the cylindrical wall is horizontally and fixedly connected to the main beam. A number of diagonal braces are arranged between the main beam and the climbing frame. The driving motor is fixedly installed on the climbing frame. The output shaft of the driving motor horizontally penetrates and rotatably connects the climbing frame. The end of the output shaft of the driving motor is fixedly installed with a driving gear. A rack column is vertically fixed at the front end of the guide rail frame. The driving gear meshes with the rack column. Four safety hooks are symmetrically arranged in the up and down directions at the left and right ends on the side of the climbing frame close to the cylindrical wall. The four safety hooks are respectively symmetrically buckled and vertically slidably connected to two vertically arranged and symmetrically arranged vertical rods on the side away from the cylindrical wall.

[0010] Further, it further includes: high-strength bolts. A number of high-strength bolts are provided. The working platform is fixedly installed at the top of the main beam through a number of high-strength bolts.

[0011] Further, the safety protection component includes: a guardrail, a guardrail door, and a platform board. A guardrail is arranged at the edge position of the top of the working platform. A guardrail door is arranged on one side of the guardrail. The top of the working platform is paved with a platform board.

[0012] Further, the safety protection component further includes: hinges and bolts. The guardrail door is hinged to the guardrail through hinges. A number of bolts are provided. The platform board is fixedly installed at the top of the working platform through a number of bolts. The platform board covers the top of the working platform.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] By pre-embedding a tie rod connection cone in the cylindrical wall in the present invention, connecting the attached wall frame to the guide rail frame, installing the working platform on the main beam of the driving frame, and installing a guardrail on the working platform; eliminating the safety hazard of multiple lifts required during construction when using a formwork platform supplemented with a fastener-type steel pipe scaffold as the working platform; improving the safety of prestressed operations, and having simple operation, convenient installation and disassembly, and improving the lifting operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is a front elevation view of the present invention;

[0017] Figure 3 is the side elevation view of the present invention;

[0018] Figure 4 is the schematic structural view of the wall-attached frame in the present invention;

[0019] Figure 5 is the schematic structural view of the driving frame in the present invention;

[0020] Figure 6 is the connection schematic view of the working platform and the safety protection component in the present invention.

[0021] The reference numerals in the drawings are: 1-cylindrical wall, 2-positioning cone, 3-high-strength tie rod, 4-wall-attached frame, 5-triangular nut, 6-wall-attached frame fastener, 7-guide rail frame, 8-main chord, 9-driving frame, 10-base, 11-working platform, 12-main beam, 13-high-strength bolt, 14-guardrail, 15-guardrail door, 16-hinge, 17-platform board, 18-safety hook, 19-bolt. Detailed implementation manners

[0022] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0023] Refer to Figures 1 to 6 As shown, a prestressed construction platform for the cylindrical wall of an LNG cryogenic storage tank includes: a cylindrical wall 1, a wall-attached component, a guide rail frame 7, a driving frame 9, a base 10, and a working platform 11. There are several wall-attached components. The guide rail frame 7 is vertically and fixedly installed on the wall of the cylindrical wall 1 through several wall-attached components. A base 10 is provided at the bottom end of the guide rail frame 7, and the base 10 is fixedly installed on the ground. A driving frame 9 capable of vertically moving along the guide rail frame 7 is installed on the guide rail frame 7. A working platform 11 is provided at the top end of the driving frame 9, and a safety protection component is provided at the top end of the working platform 11.

[0024] In this embodiment, the guide rail frame 7 includes: vertical rods, horizontal rods, diagonal tie rods, and fasteners. There are four vertical rods, and two of the four vertical rods are symmetrically arranged on the left and right respectively, and the two vertical rods on the same side of the left and right are symmetrically arranged front and back; the vertical rods are fixedly spliced in sequence from bottom to top by several main chords 8. Two horizontal rods are symmetrically and fixedly connected to the upper and lower sides between the two main chords 8 symmetrically arranged on the same side of the front and back, and a diagonal tie rod is also fixedly connected between the two horizontal rods; the two horizontally arranged and symmetrically arranged horizontal rods are fixedly connected through fasteners; four fixed vertical rods are fixedly connected to the top end of the base 10, and the four main chords 8 at the lowermost end are respectively fixedly connected to the four fixed vertical rods.

[0025] In this embodiment, the wall-attached component includes: a tie rod connection cone, a wall-attached frame 4, and a wall-attached frame fastener 6. There are two tie rod connection cones. The wall-attached frame 4 is fixedly connected to the wall of the cylinder wall 1 through the two tie rod connection cones. A wall-attached frame fastener 6 is provided on the wall-attached frame 4, and the wall-attached frame fastener 6 is buckled and fixed on the vertical rod on the side close to the wall of the cylinder wall 1, so as to ensure the stability of the guide rail frame 7 and further improve the safety of high-altitude operations.

[0026] In this embodiment, the tie rod connection cone includes: a positioning cone 2, a high-strength tie rod 3, and a triangular nut 5. Two perforations are symmetrically provided on the wall-attached frame 4. The positioning cone 2 is pre-buried and fixed in the cylinder wall 1. One end of the high-strength tie rod 3 is threadedly connected to the positioning cone 2 and extends into the interior of the cylinder wall 1. The other end of the high-strength tie rod 3 movably penetrates the corresponding perforation on the wall-attached frame 4 and is threadedly connected with a triangular nut 5 on the side of the wall-attached frame 4 away from the cylinder wall 1.

[0027] In this embodiment, the driving frame 9 includes: a main beam 12, a climbing frame, a diagonal brace, a safety hook 18, a driving motor, and a driving gear. A main beam 12 is horizontally fixedly connected to the middle of the end of the climbing frame away from the cylinder wall 1. A number of diagonal braces are provided between the main beam 12 and the climbing frame. The driving motor is fixedly installed on the climbing frame. The output shaft of the driving motor horizontally penetrates and rotatably connects the climbing frame. A driving gear is fixedly installed at the end of the output shaft of the driving motor. This driving motor is a servo motor. A rack column is vertically fixed at the front end of the guide rail frame 7, and the driving gear meshes with the rack column. Four safety hooks 18 are symmetrically arranged up and down at the left and right ends on the side of the climbing frame close to the cylinder wall 1. The four safety hooks 18 are respectively symmetrically buckled and vertically slidably connected to two vertically symmetrically arranged vertical rods on the side away from the cylinder wall 1. When climbing is required, only need to drive the driving gear to rotate through the driving motor. Since the driving gear meshes with the rack column, the working platform 11 is driven to climb through the climbing frame and the main beam.

[0028] In this embodiment, the LNG cryogenic storage tank cylinder wall prestressed construction platform further includes: a number of high-strength bolts 13. The working platform 11 is fixedly installed on the top of the main beam 12 through the number of high-strength bolts 13.

[0029] In this embodiment, the safety protection component includes: a guardrail 14, a guardrail door 15, and a platform board 17. A guardrail 14 is provided at the edge position of the top of the working platform 11. A guardrail door 15 is provided on one side of the guardrail 14. The top of the working platform 11 is covered with a platform board 17. It also includes: a hinge 16 and bolts 19. The guardrail door 15 is hinged to the guardrail 14 through the hinge 16. A number of bolts 19 are provided. The platform board 17 is fixedly installed on the top of the working platform 11 through the number of bolts 19, and the platform board 17 covers the top of the working platform 11. The provided guardrail 14 and platform board 17 ensure the operation safety of construction workers and reduce the risk of falling from a height.

[0030] The construction steps of the present invention are as follows:

[0031] Step 1: Embed the tie rod connection cone during the construction of the cylinder wall;

[0032] Step 2: Install the wall-attached frame through the embedded tie rod connection cone, and connect the first section of the guide rail frame to the wall-attached frame;

[0033] Step 3: Install the first section of the guide rail frame on the base, and connect the driving frame to the main chord of the first section of the guide rail frame through a safety hook;

[0034] Step 4: Install a working platform on the main beam of the driving frame. The working platform is connected to the main beam of the driving frame through high-strength bolts, and install a guardrail on the working platform;

[0035] Step 5: Install the subsequent guide rail frames. First, install the wall-attached frames, and then connect the lower ends of the main chords of the subsequent guide rail frames to the upper ends of the main chords of the already installed guide rail frames until the design elevation is reached.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0037] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any person skilled in the relevant art, without departing from the scope of the technical solution of the present invention, based on the technical essence of the present invention, any simple modification, equivalent replacement, and improvement made to the above embodiments shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A prestressed construction platform for the cylinder wall of an LNG cryogenic storage tank, characterized in that: include: A cylindrical wall (1), a wall-attaching component, a guide rail frame (7), a driving frame (9), a base (10) and a working platform (11), wherein a plurality of the wall-attaching components are provided, the guide rail frame (7) is vertically fixedly mounted on the wall of the cylindrical wall (1) through a plurality of the wall-attaching components, a base (10) is provided at the bottom end of the guide rail frame (7), the base (10) is fixedly mounted on the ground, a driving frame (9) capable of vertically moving along the guide rail frame (7) is installed on the guide rail frame (7), a working platform (11) is provided at the top end of the driving frame (9), and a safety protection component is provided at the top end of the working platform (11).

2. The LNG cryogenic storage tank wall prestressed construction platform according to claim 1 is characterized by: The guide rail frame (7) comprises: a vertical rod, a horizontal rod, a diagonal rod and a fastener, wherein four vertical rods are provided, two of which are symmetrically provided on the left and right sides, and the two vertical rods on the same side are symmetrically provided front and back; the vertical rod is formed by splicing and fixing a plurality of main chord rods (8) in sequence from bottom to top, and two horizontal rods are symmetrically fixedly connected on the upper and lower sides between the two main chord rods (8) symmetrically provided on the same side front and back, and a diagonal rod is also fixedly connected between the two horizontal rods, and the two horizontal rods symmetrically provided front and back are fixedly connected by fasteners; the top of the base (10) is fixedly connected with four fixed vertical rods, and the four main chord rods (8) at the bottom are respectively fixedly connected to the four fixed vertical rods.

3. The LNG cryogenic storage tank wall prestressed construction platform according to claim 2 is characterized by: The wall-mounted assembly comprises: a tie rod connecting cone, a wall-mounted frame (4) and a wall-mounted frame fastener (6); two tie rod connecting cones are provided; the wall-mounted frame (4) is fixedly connected to the wall of the tube wall (1) via the two tie rod connecting cones; the wall-mounted frame fastener (6) is provided on the wall-mounted frame (4); the wall-mounted frame fastener (6) is fastened and fixed to a vertical rod on one side of the wall close to the tube wall (1).

4. The LNG cryogenic storage tank wall prestressed construction platform according to claim 3 is characterized by: The tie rod connecting cone comprises: a positioning cone (2), a high-strength tie rod (3) and a triangular nut (5); the wall-mounted frame (4) is symmetrically provided with two through holes; the positioning cone (2) is pre-buried and fixed in the cylinder wall (1); one end of the high-strength tie rod (3) is threadedly connected to the positioning cone (2) and extends into the cylinder wall (1); the other end of the high-strength tie rod (3) movably passes through the corresponding through hole on the wall-mounted frame (4) and is threadedly connected to a triangular nut (5) on the side of the wall-mounted frame (4) away from the cylinder wall (1).

5. The LNG cryogenic storage tank wall prestressed construction platform according to claim 4 is characterized by: The driving frame (9) comprises: a main beam (12), a climbing frame, a diagonal brace, a safety hook (18), a driving motor and a driving gear. The middle part of the end of the climbing frame away from the cylinder wall (1) is transversely fixedly connected to the main beam (12), and a plurality of diagonal braces are arranged between the main beam (12) and the climbing frame. The driving motor is fixedly installed on the climbing frame, and the output shaft of the driving motor transversely penetrates and is rotatably connected to the climbing frame. The end of the output shaft of the driving motor is fixedly installed with a driving gear. A rack column is vertically fixed to the front end of the guide rail frame (7), and the driving gear meshes with the rack column. Four safety hooks (18) are symmetrically arranged at the left and right ends of the climbing frame close to the cylinder wall (1). The four safety hooks (18) are respectively symmetrically buckled and vertically slidably connected to two vertical rods symmetrically arranged on the side away from the cylinder wall (1).

6. The LNG cryogenic storage tank wall prestressed construction platform according to claim 5 is characterized by: Also includes: A plurality of high-strength bolts (13) are provided, and the working platform (11) is fixedly mounted on the top of the main beam (12) via the plurality of high-strength bolts (13).

7. The LNG cryogenic storage tank wall prestressed construction platform according to claim 6 is characterized by: The safety protection component comprises: a guardrail (14), a guardrail door (15) and a platform plate (17); the guardrail (14) is arranged at the top edge of the working platform (11); a guardrail door (15) is arranged on one side of the guardrail (14); and the platform plate (17) is laid on the top of the working platform (11).

8. The LNG cryogenic storage tank wall prestressed construction platform according to claim 7 is characterized by: The safety protection component further comprises: a hinge (16) and a bolt (19); the guardrail door (15) is hinged to the guardrail (14) via the hinge (16); a plurality of bolts (19) are provided; the platform plate (17) is fixedly mounted on the top of the working platform (11) via the plurality of bolts (19); and the platform plate (17) covers the top of the working platform (11).

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