Flower basket screw type adjustable lifting appliance for lifting large-tonnage steel tower

Abstract

The utility model discloses a turnbuckle type adjustable lifting appliance for lifting a large-tonnage steel tower, which comprises a lifting belt, a beam body and a lifting rope which are sequentially connected from top to bottom, a plurality of groups of lifting lug plates are symmetrically arranged at the lower end of the beam body, the upper end of the lifting belt is hung on a lifting hook of lifting equipment, and the lower end of the lifting rope is connected with a steel tower section through a shackle. The lifting appliance is simple in overall structure, clear in stress, firm in connection mode, simple, convenient and rapid in operation mode, good in overall strength, rigidity and stability, capable of meeting the requirement for lifting of super-tonnage steel tower sections with the tonnage larger than 450 tons, capable of reducing high-altitude welding operation of multiple sections, capable of greatly improving the construction efficiency of the steel tower and capable of lowering the construction cost. The distance between the beam body and the steel tower section in the direction of the lifting ropes on the two sides is adjusted through the connection of the lifting ropes to the different groups of lifting lug plates and the rotation effect of the turnbuckles, the construction is very convenient, the lifting posture of the steel tower section is adjustable, the lifting construction of large-section and variable-section steel towers can be met, and the lifting safety is greatly guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of large-tonnage steel tower segment hoisting construction in bridge engineering construction, and more specifically, to a basket screw type adjustable hoisting device for large-tonnage steel tower hoisting. Background Art

[0002] With the rapid development of the Yangtze River Bridge, the number of steel towers in cross-river and cross-sea bridges has gradually increased, and the height and weight of steel towers have also increased. When hoisting large-tonnage steel tower segments, the conventional method is to use non-adjustable hoists to ensure the strength and rigidity of the hoists; when hoisting variable-section steel towers, the conventional method is to use fastener-type beams or rods for adjustment, which have a small adjustable range, and the adjustable hoists often have low strength and rigidity, which makes it difficult to meet the requirements of large-tonnage steel tower segment hoisting, resulting in finer division of steel tower segments, greatly increasing operations such as high-altitude welding, and extremely cumbersome construction with high risks. Utility Model Content

[0003] The utility model aims to provide a basket screw type adjustable sling for large-tonnage steel tower hoisting, so as to solve the technical problem that the sling in the prior art has weak adaptability to adjust the horizontal posture of large-tonnage variable-section steel tower hoisting.

[0004] In order to achieve these purposes and other advantages according to the utility model, a basket screw type adjustable lifting device for large-tonnage steel tower hoisting is provided, comprising:

[0005] The beam body is arranged horizontally, and the tops of both ends of the beam body in the length direction are symmetrically connected with pin shafts, and the bottoms of both ends of the beam body in the length direction are symmetrically connected with multiple groups of lifting lugs, and each group of lifting lugs is symmetrically arranged on both sides of the width direction of the corresponding ends of the beam body;

[0006] A sling is symmetrically arranged above the beam, the lower end of the sling is connected to a pin shaft, and the upper end is used to connect to the hook of the tower crane;

[0007] A group of lifting ropes are respectively arranged at both ends of the length direction of the beam body, each group of lifting ropes corresponds to a group of lifting ear plates, the upper ends of the lifting ropes are connected to a lifting ear plate through a shackle, and the bottoms of the lifting ropes on one or both sides are connected to a basket screw, and the bottoms of the basket screws are connected to the steel tower lifting ears through a shackle.

[0008] Preferably, three groups of lifting ear plates are arranged at each end of the beam body, the three groups of lifting ear plates are arranged at intervals along the length direction of the beam body, and the height of the middle group of lifting ear plates is lower than the heights of the other two groups of lifting ear plates.

[0009] Preferably, the sling is an endless rope loop.

[0010] Preferably, a turnbuckle screw is connected to the bottom of the lifting rope, and the bottom of the turnbuckle screw is connected to the steel tower lifting ear through a shackle.

[0011] Preferably, the basket screw includes a sleeve, the inner sides of both ends of the sleeve are coaxially penetrated and respectively provided with internal threads, the two ends of the sleeve are respectively provided with screw ends, one end of the screw end is provided with an external thread matched with the internal thread, and the other end is provided with a connecting head, the connecting head is connected to the lifting rope or the steel tower lifting ear at the corresponding end through the shackle, and one end of the screw end is provided with an external thread extending into the sleeve to generate axial displacement after rotation, thereby realizing the distance adjustment of the connecting heads at both ends.

[0012] Preferably, a handle is symmetrically fixedly connected to the outer side of the sleeve body.

[0013] Preferably, the structure of the connector is a U-shaped slot, and bolt shafts are inserted and connected to both ends of the U-shaped slot, and a space for the lifting rope or the shackle to pass through is formed between the U-shaped slot and the bolt shaft.

[0014] The utility model at least has the following beneficial effects:

[0015] (1) The utility model is a flower basket screw type adjustable sling for large-tonnage steel tower hoisting, comprising a sling, a beam, and a hoisting rope connected in sequence from top to bottom, with pins symmetrically arranged at the top of the upper end of the beam, and multiple sets of hoisting lugs symmetrically arranged at the lower end of the beam. The upper end of the sling is hung on the hook of the lifting equipment, and the lower end of the hoisting rope is connected to the steel tower segment through a shackle. A flower basket screw is also provided. The overall structure of the sling is simple, the force is clear, the connection method is firm, and the operation method is simple and fast;

[0016] (2) The utility model of the flower basket screw type adjustable lifting device for large-tonnage steel tower hoisting has good overall strength, rigidity and stability, and can meet the hoisting of large-tonnage steel tower segments of more than 450 tons. It can reduce the segmentation of steel towers and the high-altitude welding operations of multiple segments, greatly improving the efficiency of steel tower construction;

[0017] (3) The utility model is a flower basket screw type adjustable lifting device for large-tonnage steel tower hoisting. By setting three sets of lifting ear plates and flower basket screws on the beam body, the distance between the beam body and the steel tower segment in the direction of the lifting ropes on both sides can be adjusted by rotating the flower basket screws. The construction is extremely convenient, and the lifting posture of the steel tower segment can be adjusted, which can meet the lifting construction of large-section and variable-section steel towers and greatly ensure the safety of the lifting.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the main structural diagram of the utility model;

[0020] Figure 2 It is a side view structural diagram of the utility model;

[0021] Figure 3 This is a main structural diagram of the beam body of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the flower basket screw of the utility model.

[0023] Explanation of the reference numerals in the drawings in the specification: 1. sling, 2. beam, 3. pin, 4. lifting ear plate one, 5. lifting ear plate two, 6. lifting ear plate three, 7. shackle, 8. lifting rope, 9. basket screw, 10. hook, 11. handle, 12. sleeve, 13. screw end. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0025] In the description of the present invention, terms such as "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, the utility model of the flower basket screw type adjustable lifting device for large-tonnage steel tower hoisting includes:

[0027] The beam body 2 is arranged horizontally, and the tops of both ends of the beam body 2 in the length direction are symmetrically connected with pin shafts 3, and the bottoms of both ends of the beam body 2 in the length direction are symmetrically connected with multiple groups of lifting ear plates (4, 5, 6), and each group of lifting ear plates is symmetrically arranged on both sides of the width direction of the corresponding ends of the beam body 2;

[0028] A sling 1 is symmetrically arranged above the beam 2, the lower end of the sling 1 is connected to a pin 3, and the upper end is used to connect to a hook 10 of a tower crane;

[0029] A group of lifting ropes 8 are respectively arranged at both ends of the length direction of the beam body 2, and each group of lifting ropes 8 corresponds to a group of lifting ear plates. The upper ends of the lifting ropes 8 are connected to a lifting ear plate through a shackle 7, and the bottoms of the lifting ropes 8 on one side or both sides are connected to a basket screw 9, and the bottoms of the basket screw 9 are connected to the steel tower lifting ears through a shackle.

[0030] The main components of the adjustable sling include a 150-ton sling 1, a beam 2, a 200-ton wide-body shackle 7, and a 209-ton high-performance jointless rope 8. Each component is a single-body structure. After being connected and fixed to each other, the steel tower hoisting construction can be carried out. Among them, the lower end of the sling 1 passes through the beam 2 fastener pin 3 and is connected to the beam 2, and the upper end is connected to the tower crane or other hoisting equipment hook 10. The slings 1 on the left and right sides are as follows: Figure 1 The beam body 2 is a single steel structure welded part, the upper side is connected to the 150t sling 1 through the pin 3 on the ear seat, and the lower side is connected to the 200-ton wide body shackle 7 through the lifting ear plate on the beam body 2. Multiple lifting ear plates are set on one side of the beam body 2, such as Figure 1 The lifting ear plates on both sides are symmetrically arranged and divided into multiple groups. According to the different positions of each group of lifting ear plates, it can adapt to the lifting requirements of steel towers with different cross-sections. The 200-ton wide-body shackle 7 is connected to the lifting ear plates on the beam body 2 on the upper side and to the lifting rope 8 on the lower side. The lower side of the lifting rope 8 is buckled with the lifting ear on the steel tower segment through the shackle 7 to achieve connection with the steel tower segment. The flower basket screw 9 uses a 200-ton special flower basket screw 9, the upper end of which is connected to the lifting rope 8, and the lower end is connected through the shackle 7 and the lifting ear on the steel tower segment. The middle part of the 200-ton special flower basket screw 9 is set to an adjustable high-strength screw and nut matching form, and the adjustable amount is 800mm (±400mm). The bottom shackle 7 of the sling is connected to the steel tower lifting ear, and the flower basket screw 9 high-strength screw is rotated. The adjustment is extremely convenient and the adjustment range is large. After the adjustment is completed, the screw is fixed to ensure the horizontal posture of the steel tower during the lifting process, and the safety is good. With the three sets of ear plates of the beam body 2, it can adapt to the lifting needs of steel towers with different cross-sections, and can ensure the horizontal posture of large-tonnage steel towers.

[0031] The utility model is an adjustable lifting device with a basket screw 9 type for lifting large-tonnage steel towers. The overall structure is simple. A lifting belt 1, a beam body 2, and a lifting rope 8 are sequentially connected downward from a lifting hook 10 of the lifting equipment to connect the steel tower segment. The lifting device structure is clearly stressed, the connection method is firm, and the construction is extremely convenient and efficient. Through special components, the overall strength, rigidity, and stability of the lifting device are good. The lifting weight is super large, which can meet the lifting of super-large tonnage steel tower segments of more than 450 tons, that is, super-high and super-heavy steel tower segments can be lifted, the steel tower segmentation is reduced, and the high-altitude welding operations of multiple segments are reduced, which greatly improves the construction efficiency of the steel tower. Due to the arrangement of multiple sets of lifting ear plates and basket screws, the distance between the two sides of the beam body 2 in the length direction is variable, and the lifting posture is adjustable, which can meet the lifting construction of large-section and variable-section steel towers, and greatly guarantees the safety of the lifting.

[0032] In another technical solution, Figure 1-3 As shown, three groups of lifting ear plates are arranged at each end of the beam body 2, and the three groups of lifting ear plates are arranged at intervals along the length direction of the beam body 2, and the height of the middle group of lifting ear plates is lower than the heights of the other two groups of lifting ear plates.

[0033] Three lifting lugs (lifting lug 1 4, lifting lug 2 5, lifting lug 3 6) are arranged on one side of the beam body 2, and there are six on both sides, which are divided into three groups. The distances of the three lifting lugs are 4m / 5m / 6.2m respectively. According to the different positions of each group of lifting lugs, it can meet the lifting requirements of steel towers with different cross-sections, and the three adjacent groups of lifting lugs are installed in an offset manner up and down, which is convenient for the threading and connection of the lifting rope 8. The lifting equipment beam body 2 adjusts the distance of the lifting rope 8 through three groups of lifting lugs, which can meet the lifting requirements of super-large cross-section steel towers of 7m×7m to 20m×20m (lifting lug spacing 4m to 6.2m), and the lifting equipment has strong adaptability.

[0034] In another technical solution, Figure 1-2 As shown, the lifting rope 8 is a jointless rope loop. The lifting rope 8 uses 2 sets of high-performance jointless rope loops, which are passed around the 200-ton wide-body shackle 7 on the upper side for fixing, thereby improving the connection reliability and load-bearing capacity.

[0035] In another technical solution, Figure 2 , 4 As shown, the basket screw 9 includes a sleeve 12, the inner sides of both ends of the sleeve 12 are coaxially penetrated and respectively provided with internal threads, and screw ends 13 are respectively provided at both ends of the sleeve 12, one end of the screw end 13 is provided with an external thread matched with the internal thread, and the other end is provided with a connector, which is connected to the lifting rope 8 or the steel tower lifting ear at the corresponding end through the shackle 7, and one end of the screw end is provided with an external thread extending into the sleeve 12 to generate axial displacement after rotation, thereby realizing the distance adjustment of the connectors at both ends.

[0036] The upper end of the upper screw end is connected to the shackle 7 set at the lower end of the lifting rope 8, and the lower end of the lower screw end is connected to the steel tower lifting ear through the shackle 7. By rotating the sleeve 12, with the cooperation of the internal thread and the external thread, the length between the bottom of one side beam 2 and the steel tower lifting ear is adjusted to adapt to the shape and center of gravity of the steel tower and adjust the horizontal posture of the steel tower.

[0037] In another technical solution, Figure 2 , 4 As shown, the outer side of the sleeve 12 is symmetrically fixedly connected with a handle 11. When rotating the sleeve 12, the handle 11 can be rotated by hand, which makes the operation more convenient. The handle 11 can be hinged to the sleeve 12.

[0038] In another technical solution, Figure 2 , 4 As shown, the structure of the connector is a U-shaped slot, with bolt shafts inserted into both ends of the U-shaped slot, and a space for the lifting rope 8 or the shackle 7 to pass through is formed between the U-shaped slot and the bolt shaft, which is beneficial to ensure the lifting load-bearing capacity and safety.

[0039] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation scheme. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the drawings shown and described herein.

Claims

1. A basket screw type adjustable sling for large-tonnage steel tower hoisting, characterized in that: include: The beam body is arranged horizontally, and the tops of both ends of the beam body in the length direction are symmetrically connected with pin shafts, and the bottoms of both ends of the beam body in the length direction are symmetrically connected with multiple groups of lifting lugs, and each group of lifting lugs is symmetrically arranged on both sides of the width direction of the corresponding end of the beam body; A sling is symmetrically arranged above the beam, the lower end of the sling is connected to a pin shaft, and the upper end is used to connect to the hook of the tower crane; A group of lifting ropes are respectively arranged at both ends of the length direction of the beam body, each group of lifting ropes corresponds to a group of lifting ear plates, the upper ends of the lifting ropes are connected to a lifting ear plate through a shackle, and the bottoms of the lifting ropes on one or both sides are connected to a basket screw, and the bottoms of the basket screws are connected to the steel tower lifting ears through a shackle.

2. The basket screw type adjustable sling for large-tonnage steel tower hoisting as claimed in claim 1, characterized in that: There are three groups of lifting ear plates at each end of the beam body, and the three groups of lifting ear plates are arranged at intervals along the length direction of the beam body, and the height of the middle group of lifting ear plates is lower than the heights of the other two groups of lifting ear plates.

3. The basket screw type adjustable sling for large-tonnage steel tower hoisting as claimed in claim 1, characterized in that: The lifting rope is a jointless rope loop.

4. The basket screw type adjustable sling for large-tonnage steel tower hoisting as claimed in claim 1, characterized in that: The basket screw includes a sleeve, the inner sides of the two ends of the sleeve are coaxially penetrated and respectively provided with internal threads, the two ends of the sleeve are respectively provided with screw ends, one end of the screw end is provided with an external thread matched with the internal thread, and the other end is provided with a connecting head, the connecting head is connected to the lifting rope or the steel tower lifting ear at the corresponding end through the shackle, and one end of the screw end is provided with an external thread extending into the sleeve to generate axial displacement after rotation, so as to realize the distance adjustment of the connecting heads at both ends.

5. The basket screw type adjustable sling for large-tonnage steel tower hoisting as claimed in claim 4, characterized in that: A handle is symmetrically fixedly connected to the outer side of the sleeve body.

6. The basket screw type adjustable sling for large-tonnage steel tower hoisting as claimed in claim 4, characterized in that: The structure of the connector is a U-shaped slot, and bolt shafts are inserted and connected at both ends of the U-shaped slot, and a space for the lifting rope or the shackle to pass through is formed between the U-shaped slot and the bolt shaft.

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