Quick-release lifting lugs

Abstract

The invention discloses a lifting ear that can be quickly disassembled and assembled, comprising a sleeve, a clamping arm and a hanging plate. The sleeve extends in the left-right direction, and a first spring is arranged in the sleeve. Two clamping arms are arranged at intervals and symmetrically in the left-right direction, and the clamping arms include a first arm, a second arm and a second spring. The first arm is slidably connected to the sleeve in the left-right direction, and the two ends of the first spring are respectively connected to the first arms of the two clamping arms, and the second arm is slidably connected to the first arm in the up-down direction, and the upper end of the second spring is connected to the first arm, and the lower end of the second spring is connected to the second arm. The first arms of the two clamping arms can be relatively close to clamp the steel beam together or relatively far away, and the second arm and the sleeve can be relatively close to clamp the steel beam together or relatively far away. The hanging plate is fixedly installed on the upper side of the sleeve, and the hanging plate is provided with a hanging hole. The lifting ear that can be quickly disassembled and assembled can be quickly installed on the steel beam, avoiding welding and cutting processes, and can be reused, thereby improving production efficiency and saving costs.

Description

Technical Field

[0001] The invention relates to the technical field of steel structures, and in particular to a lifting lug that can be quickly disassembled and assembled. Background Art

[0002] With the rise of steel structure buildings in my country, multi-story steel structure buildings are increasingly valued by local governments, large steel structure companies and various industrial sectors for their high strength, light weight, good earthquake resistance, fast construction speed, high degree of industrialization, beautiful appearance, green environmental protection and other advantages. During the construction process, the factory needs to weld the lifting lugs on the steel beams in the early stage to facilitate the transportation and lifting of the steel beams. After the steel beams are installed on site, the lifting lugs need to be cut, which causes a great waste of labor costs, material costs and time costs. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention provides a lifting eye that can be quickly disassembled.

[0004] The embodiment of the present invention provides a quickly detachable lifting lug installed on a steel beam, wherein the quickly detachable lifting lug comprises:

[0005] A sleeve, the sleeve extending in the left-right direction, and a first spring is arranged in the sleeve;

[0006] A clamping arm, wherein the two clamping arms are arranged at intervals and symmetrically in the left-right direction, the clamping arm comprises a first arm, a second arm and a second spring, the first arm is slidably connected to the sleeve in the left-right direction, the two ends of the first spring are respectively connected to the first arms of the two clamping arms, the second arm is located below the sleeve, the second arm is slidably connected to the first arm in the up-down direction, the upper end of the second spring is connected to the first arm, and the lower end of the second spring is connected to the second arm, the first arms of the two clamping arms can be relatively close to clamp the steel beam together or relatively far away, and the second arm and the sleeve can be relatively close to clamp the steel beam together or relatively far away;

[0007] A hanging plate is fixedly mounted on the upper side of the sleeve, and the hanging plate is provided with a hanging hole.

[0008] The quickly detachable lifting lug according to the embodiment of the present invention has at least the following technical effects: when it is necessary to clamp a steel beam, an external force is applied to make the first arms of the two clamping arms move away from each other so that the steel beam can enter between the two first arms, and the first spring is stretched at this time. When the external force is removed, the first arms of the two clamping arms move closer to each other under the action of the first spring so that the two clamping arms cooperate to clamp the left and right sides of the steel beam; an external force is applied to make the second arm move away from the first arm to change the spacing between the second arm and the sleeve so as to adapt to steel beams of different thicknesses. When the external force is removed, the second arm and the sleeve move closer to each other under the action of the second spring so as to clamp the upper and lower sides of the steel beam. The quickly detachable lifting lug can be quickly installed on the steel beam, so that the steel beam can be transported and hoisted using the lifting hole on the quickly detachable lifting lug, avoiding welding and cutting processes, and can be reused, thereby improving production efficiency and saving costs.

[0009] According to some embodiments of the present invention, the first spring is always in a stretched state.

[0010] According to some embodiments of the present invention, the second spring is always in a stretched state.

[0011] According to some embodiments of the present invention, the lower side of the first arm extends downward to form a first column, the first column is provided with an inner cavity and the opening faces downward, the upper side of the second arm extends upward to form a second column, the second column is upwardly inserted into the first column and is slidably connected to the first column, the second spring is provided in the first column, the upper end of the second spring is connected to the top wall of the inner cavity of the first column, and the lower end of the second spring is connected to the upper end of the second column.

[0012] According to some embodiments of the present invention, the lowest end of the first column is lower than the lowest end of the sleeve, and the first columns of the two clamping arms can cooperate to clamp the steel beam.

[0013] According to some embodiments of the present invention, the lower side of the first arm extends downward to form a third column, the upper side of the second arm extends upward to form a fourth column, the fourth column is provided with an inner cavity and the opening faces upward, the third column is downwardly inserted into the fourth column and slidably connected to the fourth column, the second spring is provided in the fourth column, the upper end of the second spring is connected to the lower end of the third column, and the lower end of the second spring is connected to the bottom wall of the inner cavity of the fourth column.

[0014] According to some embodiments of the present invention, the uppermost end of the fourth column is higher than the lowermost end of the sleeve, and the fourth columns of the two clamping arms can cooperate to clamp the steel beam.

[0015] According to some embodiments of the present invention, a clamping block is provided in the sleeve, and the two clamping blocks correspond to the two clamping arms respectively, the upper side of the clamping block abuts against the upper inner wall of the sleeve, and the lower side of the clamping block abuts against the upper side surface of the first arm.

[0016] According to some embodiments of the present invention, the pressing block is elastic.

[0017] According to some embodiments of the present invention, an electromagnet assembly is provided in the sleeve, and the electromagnet assembly is located between the two clamping arms. When the electromagnet assembly is energized, it can attract the two clamping arms to move closer to each other.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a schematic diagram of the structure of the lifting ears that can be quickly disassembled and assembled in some embodiments of the present invention;

[0021] Figure 2 is a cross-sectional view of a quickly detachable lifting lug according to some embodiments of the present invention;

[0022] Figure 3 is a cross-sectional view of another type of quickly detachable lifting ear according to some embodiments of the present invention.

[0023] Figure Number:

[0024] Sleeve 100, first spring 110, steel beam 120;

[0025] Clamping arm 200, first arm 210, second arm 220, second spring 230, first column 241, second column 242, third column 243, fourth column 244;

[0026] Hanging plate 300 , hanging hole 310 , pressing block 320 . DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0029] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0032] According to some embodiments of the present invention, referring to Figures 1 to 3 The quick-disassembly lifting ear comprises a sleeve 100, a clamping arm 200 and a hanging plate 300. The sleeve 100 extends in the left-right direction, and both the left and right ends of the sleeve 100 are open. A first spring 110 is arranged in the sleeve 100. Two clamping arms 200 are arranged symmetrically and spaced in the left-right direction, and the two clamping arms 200 are respectively located on the left and right sides of the sleeve 100. The clamping arm 200 comprises a first arm 210, a second arm 220 and a second spring 230. One end of the first arm 210 is inserted into the sleeve 100 and is slidably connected to the sleeve 100 in the left-right direction. Both ends of the first spring 110 are respectively connected to the first arm 210 of the two clamping arms 200. The second arm 220 is located below the sleeve 100, and the second arm 220 is slidably connected to the first arm 210 in the up-down direction. The upper end of the second spring 230 is connected to the first arm 210, and the lower end of the second spring 230 is connected to the second arm 220. The first arms 210 of the two clamping arms 200 can be relatively close to clamp the steel beam 120 together, or relatively far away to release the steel beam 120. The second arm 220 and the sleeve 100 can be relatively close to clamp the steel beam 120 together, or relatively far away to release the steel beam 120. The hanging plate 300 is fixedly installed on the upper side of the sleeve 100, and the hanging plate 300 is provided with a hanging hole 310.

[0033] It is understandable that when the steel beam 120 needs to be clamped, an external force is applied to move the first arms 210 of the two clamping arms 200 away from each other so that the steel beam 120 can enter between the two first arms 210. At this time, the first spring 110 is stretched. When the external force is removed, the first arms 210 of the two clamping arms 200 approach each other under the action of the first spring 110, so that the two clamping arms 200 cooperate to clamp the left and right sides of the steel beam 120. In addition, the external force is applied to move the second arm 220 away from the first arm 210, and the spacing between the second arm 220 and the sleeve 100 can be adjusted to accommodate steel beams 120 of different thicknesses. When the external force is removed, the second arm 220 and the sleeve 100 approach each other under the action of the second spring 230, so as to clamp the upper and lower sides of the steel beam 120.

[0034] The quickly detachable lifting ear can be quickly installed on the steel beam 120, so that the steel beam 120 can be transported and lifted using the lifting hole 310 on the quickly detachable lifting ear, thus avoiding welding and cutting processes, being reusable, improving production efficiency and saving costs.

[0035] Preferably, the first spring 110 is always in a stretched state, ensuring that in the absence of a lateral external force, the two first arms 210 tend to approach each other, ensuring that the cooperation of the two clamping arms 200 has a clamping force on the steel beam 120 .

[0036] Preferably, the second spring 230 is always in a stretched state, ensuring that in the absence of external force, the second arm 220 and the sleeve 100 tend to be relatively close to each other, ensuring that the cooperation between the second arm 220 and the sleeve 100 has a clamping force on the steel beam 120 .

[0037] According to some embodiments of the present invention, referring to Figure 2 The lower side of the first arm 210 extends downward to form a first column 241, the first column 241 is provided with an inner cavity and the opening faces downward, the upper side of the second arm 220 extends upward to form a second column 242, the second column 242 is inserted upward into the first column 241 and is slidably connected to the first column 241, the second spring 230 is provided in the first column 241, the upper end of the second spring 230 is connected to the top wall of the inner cavity of the first column 241, and the lower end of the second spring 230 is connected to the upper end of the second column 242. The second column 242 can slide in the up-down direction to change the spacing between the second arm 220 and the sleeve 100, so as to adapt to steel beams 120 of different thicknesses, thereby improving the versatility of the lifting ear that can be quickly disassembled.

[0038] Preferably, refer to Figure 2 The lowest end of the first column 241 is lower than the lowest end of the sleeve 100 , and the first columns 241 of the two clamping arms 200 can cooperate to clamp the left and right sides of the steel beam 120 .

[0039] According to some embodiments of the present invention, referring to Figure 3 The lower side of the first arm 210 extends downward to form a third column 243, and the upper side of the second arm 220 extends upward to form a fourth column 244. The fourth column 244 is provided with an inner cavity and the opening faces upward. The third column 243 is inserted downward into the fourth column 244 and slidably connected to the fourth column 244. The second spring 230 is provided in the fourth column 244. The upper end of the second spring 230 is connected to the lower end of the third column 243, and the lower end of the second spring 230 is connected to the bottom wall of the inner cavity of the fourth column 244. The fourth column 244 can slide in the up-down direction to change the distance between the second arm 220 and the sleeve 100, so as to adapt to steel beams 120 of different thicknesses, thereby improving the versatility of the lifting ear that can be quickly disassembled.

[0040] Preferably, refer to Figure 3 The uppermost end of the fourth column 244 is higher than the lowermost end of the sleeve 100 , and the fourth columns 244 of the two clamping arms 200 can cooperate to clamp the left and right sides of the steel beam 120 .

[0041] According to some embodiments of the present invention, referring to Figure 2 A clamping block 320 is provided in the sleeve 100. The two clamping blocks 320 correspond to the two clamping arms 200 one by one. The upper side of the clamping block 320 abuts against the upper inner wall of the sleeve 100, and the lower side of the clamping block 320 abuts against the upper side of the first arm 210 to prevent the first arm 210 from vibrating in the up-and-down direction during the sliding process. Preferably, the clamping block 320 is elastic and made of plastic material. Thereby reducing the friction between the first arm 210 and ensuring that the downward force is applied to the first arm 210.

[0042] According to some embodiments of the present invention, an electromagnet assembly is provided in the sleeve 100, and the electromagnet assembly is located between the two clamping arms 200. When the electromagnet assembly is powered on, it can attract the two clamping arms 200 to approach each other, and the first spring 110 is compressed, thereby improving the clamping degree of the clamping arms 200 on the steel beam 120, and preventing the steel beam 120 from being separated from the quick-detachable lifting lug. When the electromagnet assembly is powered off, under the action of the first spring 110, the two clamping arms 200 are moved away from each other.

[0043] In the description of this specification, the description with reference to the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A quick-detachable lifting lug, mounted on a steel beam (120), characterized in that: The quickly detachable lifting lugs include: A sleeve (100), the sleeve (100) extending in the left-right direction, and a first spring (110) being arranged inside the sleeve (100); The clamping arm (200) is arranged at intervals and symmetrically in the left-right direction. The clamping arm (200) comprises a first arm (210), a second arm (220) and a second spring (230). The first arm (210) is slidably connected to the sleeve (100) in the left-right direction. Both ends of the first spring (110) are respectively connected to the first arms (210) of the two clamping arms (200). The second arm (220) is located below the sleeve (100). The arm (220) is connected to the first arm (210) by sliding in the up-down direction, the upper end of the second spring (230) is connected to the first arm (210), and the lower end of the second spring (230) is connected to the second arm (220), the first arms (210) of the two clamping arms (200) can be relatively close to clamp the steel beam (120) together or relatively far away, and the second arm (220) and the sleeve (100) can be relatively close to clamp the steel beam (120) together or relatively far away; The hanging plate (300) is fixedly mounted on the upper side of the sleeve (100), and the hanging plate (300) is provided with a hanging hole (310).

2. The quickly detachable lifting lug according to claim 1, characterized in that: The first spring (110) is always in a stretched state.

3. The quickly detachable lifting eye according to claim 1, characterized in that: The second spring (230) is always in a stretched state.

4. The quickly detachable lifting eye according to claim 1, characterized in that: The lower side surface of the first arm (210) extends downward to form a first column (241), the first column (241) is provided with an inner cavity and the opening faces downward, the upper side surface of the second arm (220) extends upward to form a second column (242), the second column (242) is inserted upward into the first column (241) and is slidably connected to the first column (241), the second spring (230) is provided in the first column (241), the upper end of the second spring (230) is connected to the top wall of the inner cavity of the first column (241), and the lower end of the second spring (230) is connected to the upper end of the second column (242).

5. The quickly detachable lifting eye according to claim 4, characterized in that: The lowest end of the first column (241) is lower than the lowest end of the sleeve (100), and the first columns (241) of the two clamping arms (200) can cooperate to clamp the steel beam (120).

6. The quickly detachable lifting eye according to claim 1, characterized in that: The lower side surface of the first arm (210) extends downward to form a third column (243), and the upper side surface of the second arm (220) extends upward to form a fourth column (244). The fourth column (244) is provided with an inner cavity and the opening faces upward. The third column (243) is inserted downward into the fourth column (244) and is slidably connected to the fourth column (244). The second spring (230) is provided in the fourth column (244), and the upper end of the second spring (230) is connected to the lower end of the third column (243), and the lower end of the second spring (230) is connected to the bottom wall of the inner cavity of the fourth column (244).

7. The quickly detachable lifting eye according to claim 6, characterized in that: The uppermost end of the fourth column (244) is higher than the lowermost end of the sleeve (100), and the fourth columns (244) of the two clamping arms (200) can cooperate to clamp the steel beam (120).

8. The quickly detachable lifting eye according to claim 1, characterized in that: A clamping block (320) is provided inside the sleeve (100), and the two clamping blocks (320) correspond to the two clamping arms (200) respectively. The upper side of the clamping block (320) abuts against the upper inner wall of the sleeve (100), and the lower side of the clamping block (320) abuts against the upper side surface of the first arm (210).

9. The quickly detachable lifting eye according to claim 8, characterized in that: The pressing block (320) has elasticity.

10. The quickly detachable lifting eye according to claim 1, characterized in that: An electromagnet assembly is provided in the sleeve (100), and the electromagnet assembly is located between the two clamping arms (200). When the electromagnet assembly is energized, it can attract the two clamping arms (200) to move closer to each other.

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