Lifting lug for steel anchor beam and method for turning over steel anchor beam

Abstract

The application discloses a lifting lug for a steel anchor beam and a turning-over method of the steel anchor beam and belongs to the technical field of bridge construction. The lifting lug comprises a lifting lug body, the lifting lug body is provided with a lifting hole penetrating through two end faces of the lifting lug body and a plurality of through nail holes, the plurality of through nail holes are arranged in one-to-one correspondence with a plurality of shear nails on a side plate of the steel anchor beam and are used for allowing the plurality of shear nails on the side plate of the steel anchor beam to pass through. The application also relates to a method for turning over the steel anchor beam by using the lifting lug. When the steel anchor beam needs to be turned over, the lifting lug is only needed to be sleeved on the plurality of shear nails at four corners of the side plate of the steel anchor beam, and a lifting appliance and a steel wire rope are operated, so that the turning over of the steel anchor beam can be realized, and the operation is simple and efficient. Compared with the prior art, the work load of cleaning, repairing and grinding after welding of the lifting lug is obviously reduced, the risk of damaging a base material when a plate clamp is turned over is avoided, the production cost and the manufacturing and installation time are reduced, the original appearance of the steel anchor beam is protected, and the construction efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a lifting lug for a steel anchor beam and a method for turning the steel anchor beam over. Background Technology

[0002] During the construction of steel anchor beams, due to the large amount of welding work, they need to be turned over frequently. Currently, the common methods are to weld turning lugs to the anchor beams or to use clamps to hold the web of the steel anchor beams for turning.

[0003] However, after the welding lugs are turned over, they still need to be dismantled and ground, especially since there are often dozens of steel anchor beams, and each one needs to be turned over, the workload of cleaning and grinding is very large. Using plate clamps to clamp the web of the anchor beam for turning over can easily damage the base material, and the damaged areas are uneven, which will affect the structural stability of the web of the steel anchor beam, and will also increase the amount of subsequent repair work.

[0004] Therefore, how to easily and efficiently flip the steel anchor beam without damaging it is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] In view of the above problems, the present invention is proposed to provide a lifting lug for a steel anchor beam and a method for turning over the steel anchor beam to overcome or at least partially solve the above problems.

[0006] In a first aspect, the present invention provides a lifting lug for a steel anchor beam, the lifting lug including a lifting lug body, the lifting lug body having lifting holes penetrating two end faces of the lifting lug body and multiple through nail holes, the multiple through nail holes being arranged one-to-one with multiple shear nails on the side plate of the steel anchor beam, for the multiple shear nails on the side plate of the steel anchor beam to pass through.

[0007] Optionally, the number of the plurality of through-holes is positively correlated with the total weight of the steel anchor beam.

[0008] Optionally, the number of the plurality of through-holes is positively correlated with the weld specifications of the plurality of shear studs.

[0009] Optionally, the lifting lug body is a plate-shaped structure, and the thickness of the lifting lug body is positively correlated with the total weight of the steel anchor beam.

[0010] Optionally, the plurality of through holes are arranged in a rectangular array.

[0011] Optionally, the end of the shear stud has a circular boss, and the diameter of the stud hole is greater than or equal to the diameter of the circular boss.

[0012] Optionally, the diameter of the through hole is 0-10 nm larger than the diameter of the circular boss.

[0013] Secondly, the present invention provides a method for turning over a steel anchor beam, the method employing the lifting lugs as described in the first aspect, the method comprising:

[0014] At least three lifting lugs are installed outside the multiple shear studs at the four corners of the steel anchor beam side plate. The at least three lifting lugs include a first lifting lug and a second lifting lug located at two corners of the steel anchor beam side plate away from the ground, respectively, and a third lifting lug located at a corner of the steel anchor beam side plate close to the ground. The corner where the third lifting lug is located is adjacent to the corner where the first lifting lug is located.

[0015] Pass the lifting wire rope through the lifting holes of the first lifting lug and the second lifting lug, use the lifting tool to lift the first lifting lug and the second lifting lug, and control the lifting height so that the lifting point of the first lifting lug is higher than the lifting point of the second lifting lug, until the lifting wire rope of the lifting tool lifting the second lifting lug is unloaded, and then remove the lifting wire rope on the second lifting lug;

[0016] The lifting wire rope is passed through the lifting hole of the third lifting lug, and the lifting tool is used to lift the first lifting lug and the third lifting lug. The lifting height is controlled so that the lifting points of the first lifting lug and the third lifting lug are at the same height, and the steel anchor beam is rotated 90°.

[0017] Optionally, after the steel anchor beam is rotated 90°, the method further includes:

[0018] A fourth lifting lug is installed at the other corner of the side plate of the steel anchor beam near the ground;

[0019] The first and third lifting lugs are lifted using a lifting device, and the lifting height is controlled so that the lifting point of the third lifting lug is higher than the lifting point of the first lifting lug, until the lifting device wire rope for lifting the first lifting lug is unloaded, and then the lifting device wire rope on the first lifting lug is removed.

[0020] Pass the lifting wire rope through the lifting hole of the fourth lifting lug, and use the lifting tool to lift the third and fourth lifting lugs. Control the lifting height so that the lifting points of the third and fourth lifting lugs are at the same height, and rotate the steel anchor beam 180° to complete the lifting.

[0021] Optionally, after the steel anchor beam is rotated 90° or 180° to complete the lifting, the method further includes:

[0022] Remove the lifting lugs that are fitted over the shear nails on the side plate of the steel anchor beam.

[0023] The technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0024] The lifting lugs and the method for turning over steel anchor beams provided in this invention embodiment utilize multiple through-holes on the lifting lugs, each corresponding to a shear nail on the side plate of the steel anchor beam, allowing the shear nails to pass through. When the steel anchor beam needs to be turned over, simply attach the lifting lugs to the shear nails at the four corners of the side plate of the steel anchor beam, and operate the lifting equipment and wire rope to achieve the turning over of the steel anchor beam. The operation is simple and efficient. Compared with the prior art, this significantly reduces the amount of cleaning and grinding work after welding the lifting lugs, avoids the risk of damaging the base material when turning the plate clamp, reduces production costs and manufacturing and installation time, and improves construction efficiency while protecting the original appearance of the steel anchor beam.

[0025] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0026] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0027] Figure 1 This is a schematic diagram of a lifting lug provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the installation of a lifting lug provided in an embodiment of the present invention;

[0029] Figure 3 This is a structural diagram of a shear stud provided in an embodiment of the present invention;

[0030] Figure 4 This is a flowchart of a method for turning over a steel anchor beam according to an embodiment of the present invention;

[0031] Figures 5 to 8 This is a schematic diagram of the hoisting process of the steel anchor beam provided in an embodiment of the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0033] Before providing a detailed description of the control method for the relay used in the power battery provided in the embodiments of the present invention, a brief introduction to the implementation environment involved in the embodiments of the present invention will be given first.

[0034] Figure 1 This is a schematic diagram of a lifting lug provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the lifting lug 10 includes a lifting lug body 11. The lifting lug body 11 has lifting holes 10a penetrating both end faces of the lifting lug body 11 and multiple through nail holes 10b.

[0035] Figure 2 This is a schematic diagram of the installation of a lifting lug provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the multiple nail holes 10b on the lifting lug body 11 are arranged one-to-one with the multiple shear nails 21 on the steel anchor beam side plate 20, for the multiple shear nails 21 on the steel anchor beam side plate 20 to pass through.

[0036] In practical use, simply fit the multiple nail holes 10b on the lifting lug body 11 onto the multiple shear nails 21 on the side plate 20 of the steel anchor beam.

[0037] Since the multiple shear studs 21 on the side plate 20 of the steel anchor beam in this embodiment are arranged in a rectangular array, therefore, as Figure 2 As shown, in one implementation of this embodiment, multiple through-holes 10b are arranged in a rectangular array to facilitate the installation of the lifting lugs on the outside of multiple shear nails 21.

[0038] For example, the lifting lug body 11 is provided with 12 through nail holes 10b, and the 12 through nail holes 10b are arranged in a rectangular array.

[0039] Optionally, the number of multiple through-holes 10b is positively correlated with the total weight of the steel anchor beam. That is, the heavier the steel anchor beam, the more through-holes 10b can be set to increase the contact area between the lifting lug and the multiple shear studs 21 on the side plate 20 of the steel anchor beam, thereby increasing the stability of the connection between the lifting lug and the multiple shear studs 21 on the side plate 20 of the steel anchor beam.

[0040] Optionally, the number of through-holes 10b is positively correlated with the weld specifications of the shear studs 21. That is, the larger the weld of the shear studs 21, the higher the load-bearing capacity, and the more through-holes 10b can be set to increase the stability of the connection between the lifting lug and the shear studs 21 on the steel anchor beam side plate 20.

[0041] Optionally, the lifting lug body 11 is a plate-like structure, and the thickness of the lifting lug body 11 is positively correlated with the total weight of the steel anchor beam. That is, the heavier the total weight of the steel anchor beam, the thicker the lifting lug body 11 can be, in order to ensure the structural strength of the lifting lug body 11.

[0042] Figure 3 This is a structural diagram of a shear nail provided in an embodiment of the present invention, as shown below. Figure 3As shown, the steel anchor beam side plate 20 is provided with multiple shear studs 21, each shear stud 21 having a circular boss 211 at its end. The diameter of the through hole 10b is greater than or equal to the diameter of the circular boss 211, so that the circular boss 211 can pass through the through hole 10b. In actual use, when the lifting lug is installed on the multiple shear studs 21, after the steel anchor beam is lifted by the lifting equipment, the circular boss 211 at the end of the shear stud 21 can act as a blocking function to prevent the lifting lug from sliding to the end of the shear stud 21 and falling off.

[0043] Optionally, the diameter of the through hole 10b is 0-10 nm larger than the diameter of the circular boss 211 to ensure that the circular boss 211 can pass through the through hole 10b.

[0044] This invention also provides a method for turning over a steel anchor beam, which uses the lifting lugs as described in the above embodiments. Figure 4 This is a flowchart of a method for turning over a steel anchor beam according to an embodiment of the present invention, as shown below. Figure 4 As shown, the method includes:

[0045] Step S401: Install at least three lifting lugs on the outside of the multiple shear studs at the four corners of the steel anchor beam side plate. The at least three lifting lugs include a first lifting lug and a second lifting lug located at two corners of the steel anchor beam side plate away from the ground, respectively, and a third lifting lug located at a corner of the steel anchor beam side plate close to the ground, and the corner where the third lifting lug is located is adjacent to the corner where the first lifting lug is located.

[0046] like Figure 2 As shown, at this time, three lifting lugs 10 are respectively installed on the outside of the multiple shear studs at three corners of the steel anchor beam side plate 20. Two of the lifting lugs are located at the two corners of the steel anchor beam side plate away from the ground, and one lifting lug is located at the corner of the steel anchor beam side plate closer to the ground.

[0047] Step S402: Pass the lifting wire rope through the lifting holes of the first and second lifting lugs, use the lifting tool to lift the first and second lifting lugs, and control the lifting height so that the lifting point of the first lifting lug is higher than the lifting point of the second lifting lug, until the lifting wire rope of the lifting tool lifting the second lifting lug is unloaded, and remove the lifting wire rope on the second lifting lug.

[0048] Figures 5 to 8 This is a schematic diagram of the hoisting process of the steel anchor beam provided in an embodiment of the present invention, as shown below. Figure 5 As shown, at this time, the lifting wire rope S passes through the first lifting lug 10a and the second lifting lug 10b, but the lifting wire rope S is not installed on the third lifting lug 10c. Figure 6 As shown, at this time, the lifting device (not shown in the figure) lifts the first lifting lug 10a and the second lifting lug 10b, with the lifting point of the first lifting lug 10a higher than the lifting point of the second lifting lug 10b. Figure 7 As shown, at this time, the lifting wire rope S of the lifting lug 10b is in a state of unloaded force.

[0049] Step S403: Pass the lifting wire rope through the lifting hole of the third lifting lug, use the lifting tool to lift the first and third lifting lugs, and control the lifting height so that the lifting points of the first and third lifting lugs are at the same height, and the steel anchor beam is rotated 90°.

[0050] like Figure 8 As shown, at this time, the lifting wire rope S passes through the lifting hole of the third lifting lug 10c. The lifting device lifts the first lifting lug 10a and the third lifting lug 10c, and controls the lifting height so that the lifting points of the first lifting lug 10a and the third lifting lug 10c are at the same height. Figure 5 Compared to the state of the steel anchor beam before lifting, as shown. Figure 8 The steel anchor beam shown has been flipped 90°.

[0051] In the above implementation, by employing the lifting devices described in the three embodiments above and operating the wire rope and lifting devices according to the above method, a 90° rotation of the steel anchor beam can be achieved. The method of this embodiment can also achieve a 180° rotation of the steel anchor beam.

[0052] Optionally, after the steel anchor beam is rotated 90°, the method further includes:

[0053] Install a fourth lifting lug at the other corner of the steel anchor beam side plate near the ground;

[0054] Use a lifting device to lift the first and third lifting lugs, and control the lifting height so that the lifting point of the third lifting lug is higher than the lifting point of the first lifting lug, until the lifting device wire rope for lifting the first lifting lug is unloaded, and then remove the lifting device wire rope from the first lifting lug;

[0055] Pass the lifting wire rope through the lifting hole of the fourth lifting lug, use the lifting equipment to lift the third and fourth lifting lugs, and control the lifting height so that the lifting points of the third and fourth lifting lugs are at the same height, and rotate the steel anchor beam 180° to complete the lifting.

[0056] Optionally, the steel anchor beam can be rotated 90° or 180° to complete the lifting process. Other methods include:

[0057] Remove the lifting lugs that were attached to the shear studs on the side plate of the steel anchor beam.

[0058] It should be noted that when using the lifting lugs provided by this invention to flip the steel anchor beam, the shear studs may deform during the flipping process. These shear studs can be straightened after flipping. However, compared to the cleaning and grinding work required after welding the lifting lugs, the workload of straightening the shear studs is significantly less.

[0059] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0060] The lifting lugs and the method for turning over steel anchor beams provided in this invention embodiment utilize multiple through-holes on the lifting lugs, each corresponding to a shear nail on the side plate of the steel anchor beam, allowing the shear nails to pass through. When the steel anchor beam needs to be turned over, simply attach the lifting lugs to the shear nails at the four corners of the side plate of the steel anchor beam, and operate the lifting equipment and wire rope to achieve the turning over of the steel anchor beam. The operation is simple and efficient. Compared with the prior art, this significantly reduces the amount of cleaning and grinding work after welding the lifting lugs, avoids the risk of damaging the base material when turning the plate clamp, reduces production costs and manufacturing and installation time, and improves construction efficiency while protecting the original appearance of the steel anchor beam.

[0061] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0062] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

[0063] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in a claim. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

Claims

1. A method for turning over a steel anchor beam, characterized in that, The lifting lug used in the method includes a lifting lug body, which has lifting holes penetrating both end faces of the lifting lug body and multiple through-holes. The multiple through-holes correspond one-to-one with multiple shear studs on the side plate of the steel anchor beam, allowing the shear studs to pass through. The multiple through-holes are arranged in a rectangular array. The end of each shear stud has a circular boss, and the diameter of the through-hole is greater than or equal to the diameter of the circular boss. The number of through-holes is positively correlated with the total weight of the steel anchor beam and positively correlated with the weld specifications of the shear studs. The diameter of the through-hole is 0-10 nm larger than the diameter of the circular boss. The lifting lug body has a plate-like structure, and its thickness is positively correlated with the total weight of the steel anchor beam. The method includes: At least three lifting lugs are installed outside the multiple shear studs at the four corners of the steel anchor beam side plate. The at least three lifting lugs include a first lifting lug and a second lifting lug located at two corners of the steel anchor beam side plate away from the ground, respectively, and a third lifting lug located at a corner of the steel anchor beam side plate close to the ground. The corner where the third lifting lug is located is adjacent to the corner where the first lifting lug is located. Pass the lifting wire rope through the lifting holes of the first lifting lug and the second lifting lug, use the lifting tool to lift the first lifting lug and the second lifting lug, and control the lifting height so that the lifting point of the first lifting lug is higher than the lifting point of the second lifting lug, until the lifting wire rope of the lifting tool lifting the second lifting lug is unloaded, and then remove the lifting wire rope on the second lifting lug; The lifting wire rope is passed through the lifting hole of the third lifting lug, and the lifting tool is used to lift the first lifting lug and the third lifting lug. The lifting height is controlled so that the lifting points of the first lifting lug and the third lifting lug are at the same height, and the steel anchor beam is rotated 90°.

2. The method according to claim 1, characterized in that, After the steel anchor beam is rotated 90°, the method further includes: A fourth lifting lug is installed at the other corner of the side plate of the steel anchor beam near the ground; The first and third lifting lugs are lifted using a lifting device, and the lifting height is controlled so that the lifting point of the third lifting lug is higher than the lifting point of the first lifting lug, until the lifting device wire rope for lifting the first lifting lug is unloaded, and then the lifting device wire rope on the first lifting lug is removed. Pass the lifting wire rope through the lifting hole of the fourth lifting lug, and use the lifting tool to lift the third and fourth lifting lugs. Control the lifting height so that the lifting points of the third and fourth lifting lugs are at the same height, and rotate the steel anchor beam 180° to complete the lifting.

3. The method according to claim 1 or 2, characterized in that, After the steel anchor beam is rotated 90° or 180° to complete the lifting, the method further includes: Remove the lifting lugs that are fitted over the shear studs on the side plate of the steel anchor beam.

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