Device for hoisting FRP structure of glass fiber reinforced plastic cooling tower

Abstract

The utility model provides a device for hoisting a glass fiber reinforced plastic (FRP) structure of a glass fiber reinforced plastic cooling tower, and relates to the field of hoisting of glass fiber reinforced plastic cooling towers. The device for hoisting the FRP structure of the glass fiber reinforced plastic cooling tower comprises a balance beam and a reinforcing device, the balance beam comprises a steel pipe and a lifting lug, the lifting lug is welded on the steel pipe, and the lifting lug corresponds to a hoisting point of the FRP structure of the glass fiber reinforced plastic cooling tower; the balance beam is connected with the crane and the FRP structure through the lifting lugs; the reinforcing device is arranged at the maximum action position of the bending moment of the FRP structure of the glass fiber reinforced plastic cooling tower and comprises square timbers and steel wire ropes, the square timbers are arranged on the two sides of a stand column of the FRP structure of the glass fiber reinforced plastic cooling tower, and the square timbers and the stand column are bound through the steel wire ropes. The device for hoisting the FRP structure of the glass fiber reinforced plastic cooling tower is used for improving the installation quality and efficiency of the FRP structure of the glass fiber reinforced plastic cooling tower and preventing the problems of deformation, breakage and the like caused by overlarge local stress of the FRP structure in the hoisting process.

Description

Technical Field

[0001] The utility model relates to the field of glass fiber reinforced plastic cooling tower hoisting, in particular to a device for hoisting the FRP structure of a glass fiber reinforced plastic cooling tower. Background Art

[0002] FRP cooling towers are made of fiber-reinforced plastics (FRP), which offer excellent corrosion resistance. Compared to metal cooling towers, they are less susceptible to environmental influences such as oxidation and corrosion, significantly extending their service life. Furthermore, FRP cooling towers are cost-effective and affordable. Compared to traditional concrete cooling towers, they are more economical to build and have lower operating and maintenance costs.

[0003] FRP is inherently lightweight, making it relatively simple to construct, saving significant installation time and costs. However, this same lightweight nature also makes the structure susceptible to damage. Compared to traditional cooling towers, FRP cooling towers are relatively less robust and more susceptible to external forces such as friction, damage, and collision. The installation process is a key factor in FRP structural damage. Therefore, designing effective systems to prevent FRP structural damage is crucial. Utility Model Content

[0004] In order to solve the deficiencies in the prior art, the utility model provides a device for hoisting the FRP structure of a glass fiber reinforced plastic cooling tower, so as to solve the problem that the FRP structure of the existing glass fiber reinforced plastic cooling tower is easily damaged during the installation process and improve the efficiency of the installation.

[0005] The utility model adopts the following technical solutions.

[0006] A device for hoisting a FRP structure of a glass fiber reinforced plastic cooling tower comprises a balance beam and a reinforcement device. The balance beam comprises a steel pipe and a lifting lug, the lifting lug being welded to the steel pipe and corresponding to a lifting point of the FRP structure of the glass fiber reinforced plastic cooling tower. The balance beam is connected to a crane and the FRP structure via the lifting lug.

[0007] The reinforcement device is set at the point where the bending moment of the FRP structure of the FRP cooling tower is maximum. The reinforcement device includes square wood and steel wire rope. The square wood is set on both sides of the column of the FRP structure of the FRP cooling tower, and the square wood and the column are tied with steel wire rope.

[0008] Furthermore, the lifting points of the FRP structure of the glass fiber reinforced plastic cooling tower are set at the intersection of the second or third row of beams and columns, and the number of lifting points is four;

[0009] There are six lifting ears, the first lifting ear is arranged at the lower part of the steel pipe corresponding to the first lifting point, the second lifting ear and the third lifting ear are respectively arranged at the upper part and the lower part of the steel pipe corresponding to the second lifting point, the fourth lifting ear and the fifth lifting ear are respectively arranged at the upper part and the lower part of the steel pipe corresponding to the third lifting point, and the sixth lifting ear is arranged at the lower part of the steel pipe corresponding to the fourth lifting point.

[0010] Furthermore, the first to sixth lifting ears are symmetrical about the perpendicular midline of the steel pipe.

[0011] Furthermore, the second lifting eye and the fourth lifting eye are connected to the crane through a lifting rope, and the first lifting eye, the third lifting eye, the fifth lifting eye and the sixth lifting eye are connected to the FRP structure of the glass fiber reinforced plastic cooling tower through a lifting belt.

[0012] Furthermore, the steel pipe and the lifting lug are made of Q235B, the steel pipe is a seamless steel pipe, and the length of the steel pipe is 8-12 meters.

[0013] The beneficial effects of the present invention are as follows:

[0014] (1) The design of the balance beam can distribute the overall weight of the FRP structure to four lifting points, effectively avoiding the deformation and fracture of the FRP structure due to excessive local stress on the columns and beams at the FRP structure binding points caused by the tightening of the lifting straps.

[0015] (2) Square timber reinforcement can effectively prevent the FRP columns in the middle of the structure from being deformed or broken due to excessive force during the hoisting process when the rows of FRP structures are hoisted and erected on the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the balance beam structure provided by the utility model;

[0017] Figure 2 This is a left view of the balance beam structure provided by the utility model;

[0018] Figure 3 It is a structural schematic diagram of the reinforcement component provided by the utility model.

[0019] In the figure: 1-steel pipe; 21-first lifting eye; 22-second lifting eye; 23-third lifting eye; 24-fourth lifting eye; 25-fifth lifting eye; 26-sixth lifting eye; 3-square wood; 4-steel wire rope. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. The embodiments described in this application are only some embodiments of the present invention, not all embodiments. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0021] like Figure 1-3 As shown, a device for hoisting the FRP structure of a glass fiber reinforced plastic cooling tower includes a balance beam and a reinforcement device. The balance beam includes a steel pipe 1 and a lifting lug. The lifting lug is welded to the steel pipe and corresponds to the lifting point of the FRP structure of the glass fiber reinforced plastic cooling tower. The balance beam is connected to the crane and the FRP structure through the lifting lug.

[0022] The reinforcement device is installed at the point where the bending moment of the FRP cooling tower structure is the greatest. It includes square timbers 3 and steel wire ropes 4. The square timbers 3 are placed on both sides of the FRP cooling tower structure's columns and are tied to the columns with steel wire ropes 4. The size of the square timbers 3 can be adjusted according to actual site conditions, but the stress caused by the bending moment must be less than the allowable stress of the material. Preferably, the dimensions of the square timbers 3 are 75×50×2000mm.

[0023] Usually, depending on the span of the cooling tower, the hanging points are selected at the intersections of the columns and the top rows of beams. To reduce the stress on the column base, the hanging points are usually selected at the intersections of the second or third rows from the top, for a total of four hanging points.

[0024] There are six lifting ears, the first lifting ear 21 is arranged at the lower part of the steel pipe 1 corresponding to the first lifting point, the second lifting ear 22 and the third lifting ear 23 are respectively arranged at the upper part and the lower part of the steel pipe 1 corresponding to the second lifting point, the fourth lifting ear 24 and the fifth lifting ear 25 are respectively arranged at the upper part and the lower part of the steel pipe 1 corresponding to the third lifting point, and the sixth lifting ear 26 is arranged at the lower part of the steel pipe 1 corresponding to the fourth lifting point.

[0025] The first to sixth lifting lugs are symmetrical about the perpendicular midline of the steel pipe 1. The lifting lugs are secured to the steel pipe 1 by double-sided welding. The weld leg height is no less than the minimum wall thickness of the steel pipe 1, and the weld strength is equivalent to that of the parent material to ensure sufficient strength. The lug plate should be cut on-site according to the size of the steel pipe 1 and then fully welded to the steel pipe 1.

[0026] Preferably, the lifting lug is made of a steel plate with a diameter of δ10, the diameter of the lifting lug hole is 3 cm, and the distance from the edge of the lifting lug hole to the edge of the lug plate is not less than 2.5 cm.

[0027] The second lifting eye 22 and the fourth lifting eye 24 are connected to the crane through a lifting rope, and the first lifting eye 21, the third lifting eye 23, the fifth lifting eye 25 and the sixth lifting eye 26 are connected to the FRP structure of the glass fiber reinforced plastic cooling tower through a lifting belt.

[0028] The steel pipe 1 and the lifting lug are made of Q235B, and the steel pipe 1 is a seamless steel pipe with a length of 8-12 meters. A square pipe can also be used instead of a seamless steel pipe. Preferably, the balance beam body is made of a φ108*4 steel pipe with a total length of 10 meters.

[0029] To use the device provided by this utility model, the FRP cooling tower structures are first assembled in rows on the ground, and then the lifting points are selected. Once the lifting points are selected, the balancing beam is installed and connected to the FRP structure rows using slings. Simultaneously, the location with the greatest bending load is located between the lifting points and the FRP structure footings, and reinforcement devices are used to tie the two sides of the FRP columns to prevent excessive stress on the middle columns during lifting, which could cause deformation or fracture.

[0030] The beneficial effects of the present invention are as follows:

[0031] (1) The design of the balance beam can distribute the overall weight of the FRP structure to four lifting points, effectively avoiding the deformation and fracture of the FRP structure due to excessive local stress on the columns and beams at the FRP structure binding points caused by the tightening of the lifting straps.

[0032] (2) Square timber reinforcement can effectively prevent the FRP row structure from being deformed or broken due to excessive force during the process of hoisting and erecting on the ground.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A device for hoisting the FRP structure of a glass fiber reinforced plastic cooling tower, comprising a balance beam and a reinforcement device, characterized in that: The balance beam comprises a steel pipe (1) and a lifting lug, the lifting lug being welded to the steel pipe (1), the lifting lug corresponding to a lifting point of the FRP structure of the glass fiber reinforced plastic cooling tower; the balance beam is connected to the crane and the FRP structure via the lifting lug; The reinforcement device is arranged at the position where the bending moment of the FRP structure of the glass fiber reinforced plastic cooling tower is maximized. The reinforcement device comprises square timber (3) and steel wire rope (4). The square timber (3) is arranged on both sides of the columns of the FRP structure of the glass fiber reinforced plastic cooling tower, and the steel wire rope (4) is used to tie the square timber (3) and the columns.

2. The device for hoisting the FRP structure of a glass fiber reinforced plastic cooling tower according to claim 1, characterized in that: The lifting points of the FRP structure of the FRP cooling tower are set at the intersection of the second or third row of beams and columns, and the number of lifting points is four; The number of the lifting lugs is six, the first lifting lug (21) is arranged at the lower part of the steel pipe (1) corresponding to the first lifting point, the second lifting lug (22) and the third lifting lug (23) are respectively arranged at the upper part and the lower part of the steel pipe (1) corresponding to the second lifting point, the fourth lifting lug (24) and the fifth lifting lug (25) are respectively arranged at the upper part and the lower part of the steel pipe (1) corresponding to the third lifting point, and the sixth lifting lug (26) is arranged at the lower part of the steel pipe (1) corresponding to the fourth lifting point.

3. The device for hoisting the FRP structure of a glass fiber reinforced plastic cooling tower according to claim 2, characterized in that: The first to sixth lifting lugs are symmetrical about the perpendicular midline of the steel pipe (1).

4. The device for hoisting the FRP structure of a glass fiber reinforced plastic cooling tower according to claim 3, characterized in that: The second lifting lug (22) and the fourth lifting lug (24) are connected to the crane via a lifting rope, and the first lifting lug (21), the third lifting lug (23), the fifth lifting lug (25) and the sixth lifting lug (26) are connected to the FRP structure of the glass fiber reinforced plastic cooling tower via a lifting belt.

5. The device for hoisting the FRP structure of a glass fiber reinforced plastic cooling tower according to claim 1, characterized in that: The steel pipe (1) and the lifting lug are made of Q235B, the steel pipe (1) is a seamless steel pipe, and the length of the steel pipe (1) is 8-12 meters.

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