Hoisting device for turning over nuclear power prefabricated concrete pipeline in place

Abstract

The utility model provides a hoisting device for nuclear power precast concrete pipeline turning in place, which comprises a balance beam, a hoisting device, a rotating device and a leveling device, the upper part of the balance beam is connected with hoisting equipment, the hoisting device comprises two groups of hoisting ropes, the upper ends of the two groups of hoisting ropes are respectively connected with the two ends of the lower part of the balance beam; the lower ends of the two sets of hoisting ropes are connected with the two sides of the prefabricated concrete pipeline correspondingly, and the leveling device is fixedly installed on the balance beam and detachably connected with the bottom of the prefabricated concrete pipeline. The rotating device is connected with the lower end of the hoisting rope and comprises a pin shaft and a roller, the roller is rotatably mounted on the pin shaft, and the hoisting rope is wound in a roller rope groove; the pin shafts are inserted into the two sides of the prefabricated concrete pipeline and movably connected with the prefabricated concrete pipeline. The turning-over and horizontal state micro-adjustment device can conveniently and quickly turn over the large-diameter concrete pipeline and finely adjust the horizontal state of the large-diameter concrete pipeline, the pipeline is smoothly installed in place, and the turning-over and horizontal state micro-adjustment device is simple in structure, convenient to manufacture, safe and convenient to operate and high in practicability.

Description

Technical field:

[0001] The utility model belongs to the technical field of construction of large nuclear power projects, and specifically relates to a hoisting device used for turning over and putting into place in the construction technology of large-diameter precast concrete pipelines for nuclear power civil engineering, providing convenience for the installation of large-diameter precast concrete pipelines for nuclear power. Background technology:

[0002] The 9BGS backwash water pipeline of the "Hualong One" nuclear power plant is a prefabricated reinforced concrete pipe structure with a single section length of 2000mm, an inner diameter of 3500mm, a wall thickness of 500mm, and a weight of 31.5t / section. The pipeline connection method is a flexible tongue-and-groove connection.

[0003] Precast concrete pipes are mainly in a vertical state during transportation and storage. During the installation of the pipes, the pipes need to be flipped 90 degrees to adjust the pipes from a vertical state to a horizontal state. At the same time, the horizontal state of the pipes needs to be slightly adjusted during the positioning process to facilitate the connection of the pipe sockets and quick positioning. It is necessary to ensure the accuracy of pipe flipping and positioning, as well as the safety and convenience of operation, which is the key to the installation of large-diameter precast concrete pipes.

[0004] In order to ensure the safety, operability and convenience of the installation of such large-diameter precast concrete pipes, it is necessary to design a lifting tool that meets the actual needs of the site for this special situation. Therefore, the utility model provides a lifting device for turning over and placing nuclear power precast concrete pipes to meet the above needs. Summary of the invention:

[0005] The utility model aims to provide a hoisting device for turning over and placing a large-diameter nuclear power precast concrete pipe, which can conveniently and quickly turn over and adjust the horizontal state of the large-diameter concrete pipe, and smoothly install the pipe in place.

[0006] The utility model adopts the following technical solutions:

[0007] The utility model provides a hoisting device for turning over a nuclear power precast concrete pipeline in place, comprising a balance beam, a hoisting device and a leveling device; the balance beam is connected to a hoisting device at the top; the hoisting device comprises two groups of hoisting ropes, the upper ends of the two groups of hoisting ropes are respectively connected to the two ends at the bottom of the balance beam, and the lower ends of the two groups of hoisting ropes are respectively connected to the two sides of the precast concrete pipeline; the leveling device is fixedly installed on the balance beam and is detachably connected to the bottom of the precast concrete pipeline.

[0008] Furthermore, the utility model is also provided with a rotating device; the rotating device is connected to the lower end of the lifting rope, and the rotating device includes a pin shaft and a roller; the roller is rotatably mounted on the pin shaft through a bearing, and a rope groove adapted to the lifting rope is provided on the surface of the roller, and the lifting rope is wound in the rope groove; the pin shaft is inserted into both sides of the precast concrete pipe and is movably connected to the precast concrete pipe.

[0009] Furthermore, symmetrical lifting holes are respectively provided on both sides of the precast concrete pipe to meet the installation requirements of the rotating device pin shaft, and a sleeve is provided in the lifting hole, and the size of the sleeve is adapted to the pin shaft, and the pin shaft is inserted into the sleeve to achieve the installation of the precast concrete pipe. The pin shaft is inserted into the lifting hole reserved for the precast concrete pipe as the main load-bearing component, and the roller is used as a rotating sleeve of the sling, which can prevent the precast concrete pipe from causing wear to the sling during the flipping process.

[0010] Furthermore, the balance beam is an I-shaped beam, and stiffening plates are respectively arranged on both sides of the balance beam to improve the rigidity of the balance beam, and the stiffening plates are distributed between the upper beam plate and the lower beam plate of the balance beam.

[0011] Furthermore, two groups of the leveling device are provided, and the two stiffening plates of the balance beam are respectively fixedly provided with lifting ears, and the two groups of the leveling device are respectively installed on the two stiffening plates of the balance beam through the lifting ears.

[0012] Furthermore, the leveling device is distributed at the center of the balance beam and is an electric hoist or a hand chain hoist. A barb is provided at one end of the leveling device connected to the precast concrete pipe, and the barb is hooked on the edge of the precast concrete pipe to provide external force for the flipping and leveling of the precast concrete pipe. The diameter of the barb is adapted to the thickness of the edge of the precast concrete pipe.

[0013] Furthermore, lifting ears are respectively arranged on the upper surfaces of both ends of the balance beam, and the balance beam is connected to the lifting equipment through the lifting ears, shackles and lifting slings.

[0014] Furthermore, two ends of the lower surface of the balance beam are respectively provided with lifting ears, and the balance beam is connected to the lifting device through the lifting ears.

[0015] Furthermore, the length of the balance beam should be determined according to the diameter of the precast concrete pipe, and the distance between the lifting ears at both ends of the lower flange of the balance beam should be slightly larger than the diameter of the precast concrete pipe; the groove set in the roller should be smooth and round, and the groove width and depth should match the sling (wire rope), and the length of the wire rope used in conjunction with the rotating device should match the diameter of the precast concrete pipe; the lifting specifications and stroke of the electric hoist or hand hoist selected for the leveling device 3 should meet the flipping requirements.

[0016] Beneficial effects of the utility model:

[0017] (1) The utility model provides a hoisting device for turning over and placing prefabricated concrete pipes for nuclear power plants, which can conveniently and quickly turn over and slightly adjust the horizontal state of large-diameter concrete pipes, thereby smoothly installing the pipes in place;

[0018] (2) The utility model is provided with a rotating device, the pin shaft is inserted into the hoisting hole reserved in the precast concrete pipe, and serves as the main load-bearing component, and the roller serves as the rotating sleeve of the sling, which can prevent the precast concrete pipe from causing wear to the sling during the flipping process;

[0019] (3) The utility model is provided with two sets of leveling devices, which can meet the requirements of flipping and horizontal fine-tuning of large-diameter concrete pipes in different directions;

[0020] (3) The utility model has a simple structure, is easy to manufacture, is easy to operate, safe and convenient, and has strong practicality. Description of the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of turning over into position in an embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the lifting lug at the center of the balance beam of the embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of a rotating device according to an embodiment of the utility model;

[0025] Figures 5-6 This is a schematic diagram of an application of an embodiment of the utility model;

[0026] The symbols in the accompanying drawings are:

[0027] 1. Balance beam; 2. Rotating device; 2-1. Pin; 2-2. Roller; 3. Leveling device; 4. Precast concrete pipe; 5. Casing; 6. Lifting rope; 7. Stiffening plate; 8. Steel plate; 9. Barb. Specific implementation method:

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] Example 1

[0030] Reference Figure 1 The embodiment of the utility model provides a hoisting device for turning over and placing a nuclear power precast concrete pipeline, comprising a balance beam 1, a hoisting device and a leveling device 3.

[0031] A 30mm lifting lug is provided at the center position above the balance beam 1, and the balance beam 1 is connected to the lifting equipment through the lifting lug, shackle and lifting sling. The lifting device includes two sets of lifting steel wire ropes, and the length of the steel wire ropes must match the diameter of the precast concrete pipe 4. 30mm lifting lugs are provided at both ends of the lower surface of the balance beam 1, and the upper ends of the two sets of lifting steel wire ropes are respectively connected to the lifting lugs below the balance beam 1, and the lower ends of the two sets of lifting ropes are respectively connected to the two sides of the precast concrete pipe 4; the leveling device 3 is fixedly installed on the balance beam 1 and is detachably connected to the bottom of the precast concrete pipe 4.

[0032] When in use, first place the precast concrete pipe 4 on a plane, lift the precast concrete pipe 4 to the designed height by lifting equipment, connect the leveling device 3 to the bottom edge of the precast concrete pipe 4, pull the precast concrete pipe 4 by the leveling device 3 to flip it, and make a fine adjustment to the flipping angle. After the adjustment is completed, the precast concrete pipe 4 is in place.

[0033] Example 2

[0034] The main structure of the embodiment of the utility model is the same as that of the embodiment 1, except that: the embodiment is further provided with a rotating device 2.

[0035] Reference Figures 1-2 and Figure 4 In this embodiment, the rotating device 2 is connected to the lower end of the hoisting rope. The rotating device 2 includes a pin 2-1 (φ90mm) and a roller 2-2 (φ180mm). The roller 2-2 is rotatably mounted on the pin 2-1 through a bearing. The surface of the roller 2-2 is provided with a groove. The groove should be smooth and round. The width and depth of the groove should match the sling (wire rope). The hoisting rope is wound in the groove; the pin 2-1 is inserted into both sides of the precast concrete pipe 4 and is movably connected to the precast concrete pipe 4.

[0036] In this embodiment, symmetrical hoisting holes (φ108*8mm, length L=200mm) are respectively provided on both sides of the precast concrete pipe 4 as the hoisting points of the rotating device 2 to realize the installation requirements of the rotating device pin shaft, and a sleeve 5 is provided in the hoisting hole, and the size of the sleeve 5 is adapted to the pin shaft 2-1, and the pin shaft 2-1 is inserted into the sleeve 5 to realize the installation of the precast concrete pipe 4. The pin shaft 2-1 is inserted into the hoisting hole reserved in the precast concrete pipe 4 as the main load-bearing component, and the roller 2-2 is used as the rotating sleeve of the sling, which can prevent the precast concrete pipe 4 from causing wear to the sling during the flipping process.

[0037] Example 3

[0038] The main structure of the embodiment of the utility model is the same as that of the embodiment 2, except that: the structure of the balance beam 1 is limited in this embodiment.

[0039] Reference Figure 1 and 3 In this embodiment, the balance beam 1 is H400*200 hot-rolled steel, and stiffening plates are respectively arranged on both sides of the balance beam 1 to improve the rigidity of the balance beam 1. The stiffening plates are distributed between the upper beam plate and the lower beam plate of the balance beam 1.

[0040] The length of the balance beam 1 should be determined according to the diameter of the precast concrete pipe 4 , and the distance between the lifting ears at both ends of the lower flange of the balance beam 1 should be slightly larger than the diameter of the precast concrete pipe 4 .

[0041] Example 4

[0042] The main structure of the embodiment of the utility model is the same as that of the embodiment 3, except that: the embodiment limits the setting method of the leveling device 3.

[0043] Reference Figure 1 and 3 In this embodiment, two groups of the leveling device 3 are provided, and the two stiffening plates of the balance beam 1 are respectively fixed with lifting ears, and the two groups of the leveling device 3 are respectively installed on the two stiffening plates of the balance beam 1 through the lifting ears.

[0044] In this embodiment, the leveling device 3 is distributed at the center of the balance beam 1, and is an electric hoist or a hand chain hoist. The lifting specifications and travel of the electric hoist or the hand chain hoist should meet the flipping requirements. A barb is provided at one end of the leveling device 3 connected to the precast concrete pipe 4, and the barb is hooked on the edge of the precast concrete pipe 4 to provide external force for flipping and leveling the precast concrete pipe 4. The diameter of the barb is adapted to the thickness of the edge of the precast concrete pipe 4.

[0045] Example 5

[0046] The embodiment of the utility model provides a hoisting method for a hoisting device used for turning over and placing a nuclear power precast concrete pipeline, which is specifically:

[0047] First, place the prefabricated concrete pipe 4 on a plane and connect the components. Figure 1 .

[0048] After the slings are connected, the lifting equipment slowly hooks up, and when the precast concrete pipe 4 is about 50 cm off the ground, the barb of the leveling device 3 is hung on the outer edge of the lower end of the precast concrete pipe 4, and the leveling device 3 chain is slowly pulled to gradually apply force. Continue to pull the leveling device 3, and use the rotating device 2 to turn the precast concrete pipe 4 along the centroid until the pipe is turned over. Figure 5 .

[0049] After the precast concrete pipe 4 is hoisted to the installation position and elevation, the horizontal state of the precast concrete pipe 4 can be fine-tuned by pulling the leveling device 3 to facilitate the quick positioning of the precast concrete pipe 4. Figure 6 .

[0050] First, place the precast concrete pipe 4 on a plane, lift the precast concrete pipe 4 to the designed height by a lifting device, connect the leveling device 3 to the bottom edge of the precast concrete pipe 4, pull the precast concrete pipe 4 by the leveling device 3 to flip it, and make a fine adjustment on the flipping angle. After the adjustment is completed, the precast concrete pipe 4 is in place.

[0051] The above are only preferred implementations of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present utility model should be regarded as the protection scope of the present utility model.

Claims

1. A hoisting device for turning over and placing nuclear power precast concrete pipes, characterized in that: It comprises a balance beam (1), a lifting device and a leveling device (3); The balance beam (1) is connected to a lifting device at the top; The lifting device comprises two sets of lifting ropes, the upper ends of the two sets of lifting ropes are respectively connected to the two ends below the balance beam (1), and the lower ends of the two sets of lifting ropes are respectively connected to the two sides of the precast concrete pipe (4); The leveling device (3) is fixedly mounted on the balance beam (1) and is detachably connected to the bottom of the prefabricated concrete pipe (4).

2. The hoisting device for turning over and placing a nuclear power precast concrete pipeline according to claim 1 is characterized in that: A rotating device (2) is also provided; The rotating device (2) is connected to the lower end of the lifting rope, and comprises a pin shaft (2-1) and a roller (2-2); the roller (2-2) is rotatably mounted on the pin shaft (2-1) via a bearing, and a rope groove adapted to the lifting rope is provided on the surface of the roller (2-2), and the lifting rope is wound in the rope groove; The pin shaft (2-1) is inserted into both sides of the precast concrete pipe (4) and is movably connected to the precast concrete pipe (4).

3. The hoisting device for turning over and placing a nuclear power precast concrete pipeline according to claim 1 is characterized in that: Symmetrical hanging holes are respectively arranged on both sides of the precast concrete pipe (4), and sleeves (5) are arranged in the hanging holes. The size of the sleeves (5) is adapted to the pin shaft (2-1), and the pin shaft (2-1) is inserted into the sleeves (5) to realize the installation of the precast concrete pipe (4).

4. The hoisting device for turning over and placing a nuclear power precast concrete pipeline according to claim 1 is characterized in that: The balance beam (1) is an I-shaped beam, and stiffening plates are respectively arranged on both sides of the balance beam (1), and the stiffening plates are distributed between an upper beam plate and a lower beam plate of the balance beam (1).

5. The hoisting device for turning over and placing a nuclear power precast concrete pipeline according to claim 4 is characterized in that: The leveling device (3) is provided in two groups, and the two stiffening plates of the balance beam (1) are respectively provided with lifting ears, and the two groups of leveling devices (3) are respectively installed on the two stiffening plates of the balance beam (1) through the lifting ears.

6. The hoisting device for turning over and placing a nuclear power precast concrete pipeline according to claim 5 is characterized in that: The leveling device (3) is distributed at the center of the balance beam (1) and is an electric hoist or a hand hoist. One end of the leveling device (3) connected to the precast concrete pipe (4) is provided with a barb, the diameter of the barb is adapted to the thickness of the precast concrete pipe (4), and the leveling device (3) pulls the precast concrete pipe (4) through the barb to achieve a flipping effect.

7. The hoisting device for turning over and placing nuclear power precast concrete pipes according to claim 1 is characterized in that: Lifting ears are respectively arranged on the upper surfaces of both ends of the balance beam (1), and the balance beam (1) is connected to the lifting equipment via the lifting ears and rigging.

8. The hoisting device for turning over and placing a nuclear power precast concrete pipeline according to claim 1 is characterized in that: Lifting ears are respectively arranged at two ends of the lower surface of the balance beam (1), and the balance beam (1) is connected to a lifting device via the lifting ears.

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