Lifting assembly and self-clamping lifting appliance thereof

Abstract

The utility model provides a lifting assembly and a self-clamping lifting appliance thereof. The self-clamping lifting appliance comprises a first clamping jaw and a second clamping jaw, the ends, located on the same side, of the first clamping jaw and the second clamping jaw are used for being connected with a sling, the middle of the first clamping jaw is hinged to the middle of the second clamping jaw, and the other ends, located on the same side, of the first clamping jaw and the second clamping jaw are used for forming a clamping space. The clamping space is used for clamping a heavy object; the first clamping jaw and the second clamping jaw can rotate relatively along the hinged position in the middle under the lifting action of the sling, and then a heavy object located in the clamping space is clamped. According to the self-clamping lifting appliance provided by the embodiment of the invention, the two mutually hinged clamping jaw structures are designed, so that a heavy object can be clamped under the lifting of the sling, and the self-clamping lifting appliance has the characteristics of compact structure, small size, light weight and high reliability.

Description

Technical Field

[0001] The present application relates to the technical field of slings, and in particular to a hoisting assembly and a self-clamping sling thereof. Background Art

[0002] Spreaders, the connecting link between the lifting mechanism and the load, are one of the most commonly used tools for lifting heavy objects. Currently, conventional hooks require manual hooking and unhooking. Automatic spreaders, on the other hand, automatically lock and release the load, eliminating the need for manual hooking and unhooking. They are widely used in hazardous working environments, where operations are frequent or manual labor is unsuitable. Examples include lifting beams from high altitude during bridge construction, and lowering or salvaging heavy objects from deep water.

[0003] The structural forms of the existing technology mainly include clamp-type, hook-type, and pin-type. Although the above solutions have certain practical application effects, they still have the following problems: 1) Limited scope of application: Different types of lifting operations require different types of lifting fixtures, and existing lifting fixtures are often only suitable for specific types of lifting objects or lifting scenarios, making it difficult to meet diverse lifting needs; 2) Insufficient precision and stability: During the lifting process, due to differences in factors such as the weight, shape, and size of the lifting objects, as well as the complexity of the lifting environment, existing lifting fixtures may have deficiencies in precision and stability, which can easily lead to damage to the lifting objects or safety accidents. 3) Low degree of automation: Currently, many lifting operations still rely on manual operation of lifting fixtures, which not only increases labor intensity and reduces work efficiency, but is also easily affected by human factors, resulting in a decrease in lifting accuracy and stability. 4) High maintenance and servicing costs: Lifting fixtures require regular maintenance and servicing during use to ensure their normal operation and extend their service life. However, the structure and material of existing lifting fixtures may be relatively complex, increasing the difficulty and cost of maintenance and servicing.

[0004] To address these limitations, researchers and engineers are continuously exploring new lifting fixture technologies and materials to improve their applicability, precision, stability, automation, and reduce maintenance and upkeep costs. For example, by introducing advanced sensors, control systems, and intelligent algorithms, and leveraging simple mechanical structures to achieve reliable workpiece lifting and clamping, automated control and optimized adjustment of lifting fixtures can be achieved. The use of new materials and structural designs can also improve the load-bearing capacity and durability of lifting fixtures. Utility Model Content

[0005] The first aspect of an embodiment of the present application provides a self-clamping sling, which includes a first jaw and a second jaw, wherein the first jaw and the second jaw are located at one end on the same side and are respectively used to connect to the sling, the middle part of the first jaw and the second jaw are hinged, and the other end of the first jaw and the second jaw are located on the same side and are used to form a clamping space, which is used to clamp heavy objects; the first jaw and the second jaw can rotate relative to each other along the hinge position in the middle under the pulling action of the sling, thereby clamping the heavy object located in the clamping space.

[0006] In some embodiments, the first clamping jaw and the second clamping jaw are hingedly connected by a pin.

[0007] In some embodiments, a plurality of first hinge holes are provided in the middle of the first clamping jaw, and a plurality of second hinge holes are provided in the middle of the second clamping jaw. The first hinge holes and the second hinge holes are arranged in a one-to-one correspondence, and the pin shafts can be selectively inserted into the corresponding first hinge holes and the second hinge holes.

[0008] In some embodiments, the first clamping jaw is provided with a first sling connecting ring at one end for connecting to the sling, and the second clamping jaw is provided with a second sling connecting ring at one end for connecting to the sling. The sling can be connected to the first sling connecting ring and the second sling connecting ring respectively.

[0009] In some embodiments, the first clamping jaw is provided with a first clamping portion at one end for forming a clamping space, and the second clamping jaw is provided with a second clamping portion at one end for forming a clamping space; the first clamping portion and the second clamping portion cooperate to form the clamping space.

[0010] In some embodiments, the first clamping portion and the second clamping portion are both arc-shaped structures, and the bending directions of the first clamping portion and the second clamping portion are opposite to each other.

[0011] In some embodiments, the first clamping jaw also includes a first main body portion, a first clamping portion is connected to one end of the first main body portion, the other end of the first main body portion is connected to the first sling connecting ring, and multiple first hinge holes are all provided on the first main body portion; the second clamping jaw also includes a second main body portion, a second clamping portion is connected to one end of the second main body portion, the other end of the second main body portion is connected to the second sling connecting ring, and multiple second hinge holes are all provided on the second main body portion.

[0012] In some embodiments, the self-clamping sling includes a plurality of first clamping parts of different shapes or sizes, and the plurality of first clamping parts can be selectively detachably connected to the first main body; the self-clamping sling includes a plurality of second clamping parts of different shapes or sizes, and the plurality of second clamping parts can be selectively detachably connected to the second main body.

[0013] In some embodiments, the first main body portion is provided with a slot, the second main body portion is inserted into the slot and is hinged to the first main body portion.

[0014] In a second aspect, an embodiment of the present application provides a lifting assembly, which includes a sling and the self-clamping sling described in the above embodiment, wherein the sling is connected to the self-clamping sling.

[0015] The self-clamping sling provided in the embodiment of the present application can clamp heavy objects under the pulling of the sling by designing two clamping claw structures that are hinged to each other. It has the characteristics of compact structure, small size, light weight and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the self-clamping sling of the present application;

[0018] Figure 2 yes Figure 1 A schematic side view of the structure of the self-clamping sling in the embodiment;

[0019] Figure 3 This is a structural diagram of an embodiment of a lifting assembly of the present application;

[0020] Figure 4 This is a schematic diagram of a state in which a self-clamping sling clamps a heavy object in an embodiment of the present application;

[0021] Figure 5 It is a structural schematic diagram of another embodiment of the self-clamping sling of the present application. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only intended to illustrate the present application and are not intended to limit the scope of the present application. Similarly, the following examples are only some examples of the present application and not all examples. All other examples obtained by those of ordinary skill in the art without creative work are intended to fall within the scope of protection of this application.

[0023] The terms "first", "second" and "third" in the embodiments of the present application are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include at least one of such features. In the description of the present application, "multiple" means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined. All directional indications in the embodiments of the present application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products or devices.

[0024] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] This application embodiment provides a self-clamping sling, please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the overall structure of an embodiment of the self-clamping sling of the present application. Figure 2 yes Figure 1 The self-clamping sling 10 includes a first clamping jaw 100 and a second clamping jaw 200. The first clamping jaw 100 and the second clamping jaw 200 can be made of cast iron or steel.

[0026] For more details, please refer to Figure 3 , Figure 3The figure is a schematic diagram of an embodiment of a lifting assembly according to the present invention, comprising a self-clamping sling 10 and a sling 20. The sling 20 is typically made of high-strength steel wire rope or synthetic fiber material, with its ends connected to the self-clamping sling 10 and the crane's hoisting mechanism (not shown). During the lifting process, the sling 20 bears the tensile force of the load and transmits this force to the crane's hoisting mechanism.

[0027] The first clamping jaw 100 and the second clamping jaw 200 are located at one end (the top end in use) of the same side and are respectively used to connect with the sling 20. The middle part of the first clamping jaw 100 and the second clamping jaw 200 are hinged. The other end of the first clamping jaw 100 and the second clamping jaw 200 are located at the same side and are used to form a clamping space 1000. The clamping space 1000 is used to clamp heavy objects. Please refer to Figure 4 , Figure 4 This is a schematic diagram of the state of the self-clamping sling clamping a heavy object in the embodiment of the present application. In order to reduce waste, the time of each lifting operation is greatly shortened. Traditional mechanical lifting methods usually require the cooperation of multiple people and repeated adjustments, but after using the self-clamping sling in the embodiment of the present application, a single person can complete the entire lifting process. Data shows that after using the self-clamping sling in the embodiment of the present application, the efficiency of steel lifting has increased by about 40%, and the safety accident rate has decreased by a significant proportion. This application example fully demonstrates the value of self-made slings in actual production. The self-clamping sling, with its unique technical advantages, provides an efficient, safe and energy-saving solution. In industrial production, the application of round steel lifting slings to round steel lifting can not only significantly improve work efficiency, but also effectively reduce safety hazards and reduce operating costs. Among them, the heavy object 88 is not limited to a tubular structure, but can also be other heavy objects, such as bagged heavy objects or irregularly shaped heavy objects, etc., which are not specifically limited here.

[0028] The first clamping jaw 100 and the second clamping jaw 200 can rotate relative to each other along the hinged position in the middle under the pulling action of the sling, thereby clamping the heavy object 88 located in the clamping space 1000.

[0029] Optionally, the first clamping jaw 100 and the second clamping jaw 200 in the embodiment of the present application are hingedly connected via a pin 300. A plurality of first hinge holes 110 are provided in the middle of the first clamping jaw 100, and a plurality of second hinge holes 210 are provided in the middle of the second clamping jaw 200. The first hinge holes 110 and the second hinge holes 210 are provided in a one-to-one correspondence. The pin 300 can be selectively inserted into the corresponding first hinge hole 110 and the second hinge hole 210, respectively, to achieve the hinge connection between the first clamping jaw 100 and the second clamping jaw 200.

[0030] The self-clamping sling in this embodiment is designed with multiple sets of hinge holes, so different hinge positions can be selected according to different weights (for example, if the weight is large, the upper hinge hole can be selected), thereby improving the applicability of the self-clamping sling.

[0031] Optionally, see Figure 1 In the embodiment of the present application, the first clamping jaw 100 of the self-clamping sling is provided with a first sling connecting ring 120 at one end for connecting to the sling 20, and the second clamping jaw 200 is provided with a second sling connecting ring 220 at one end for connecting to the sling 20. The sling 20 can be connected to the first sling connecting ring 120 and the second sling connecting ring 220 respectively.

[0032] Optionally, the first clamping portion 130 is provided at one end of the first clamping jaw 100 for forming the clamping space 1000, and the second clamping portion 230 is provided at one end of the second clamping jaw 200 for forming the clamping space 1000; the first clamping portion 130 and the second clamping portion 230 cooperate to form the clamping space 1000. Optionally, the first clamping portion 130 and the second clamping portion 230 can both be arc-shaped structures, and the bending directions of the first clamping portion 130 and the second clamping portion 230 are opposite.

[0033] Of course, in some other embodiments, the shapes of the first clamping portion 130 and the second clamping portion 230 are not limited to arc structures, and can also be other structures. The self-clamping sling may include a plurality of first clamping portions 130 of different shapes or sizes, and the plurality of first clamping portions 130 may be selectively detachably connected to the first main body 140; the self-clamping sling may also include a plurality of second clamping portions 230 of different shapes or sizes, and the plurality of second clamping portions 230 may be selectively detachably connected to the second main body 240. Figure 5 , Figure 5 This is a structural diagram of another embodiment of the self-clamping sling of the present application. By designing clamping parts of different sizes and shapes, the self-clamping sling can be adapted to the lifting capacity of various heavy objects, thereby improving the scope of application of the self-clamping sling.

[0034] Please continue reading Figure 1 In this embodiment, the first clamping jaw 100 further includes a first main body 140, a first clamping portion 130 connected to one end of the first main body 140, and the other end of the first main body 140 connected to the first sling connection ring 120, and a plurality of first hinge holes 110 are provided in the first main body 140, wherein the first clamping portion 130, the first main body 140, and the first sling connection ring 120 can be an integral structure or a detachable connection. The second clamping jaw 200 further includes a second main body 240, a second clamping portion 230 connected to one end of the second main body 240, and the other end of the second main body 240 connected to the second sling connection ring 220, and a plurality of second hinge holes 210 are provided in the second main body 240, wherein the second clamping portion 230, the second main body 240, and the second sling connection ring 220 can be an integral structure or a detachable connection.

[0035] Optionally, see Figure 2 and Figure 4 In this embodiment, the first main body 140 is provided with a slot 1400, the second main body 240 is inserted into the slot 1400 and hinged to the first main body 140 through a pin 300. This design structure can improve the structural stability of the self-clamping sling when subjected to force.

[0036] The self-clamping sling in the embodiments of the present application can be widely used in various fields such as papermaking parts processing and waste paper stacking. It can accommodate round steel of various sizes and shapes, meeting diverse lifting needs without having to replace the sling, greatly improving equipment utilization. It greatly reduces the complexity and labor intensity of manual operation, ensures that the round steel is less likely to slip or shift, and improves the safety factor during lifting. The sling is lifted to a height of 100 to 200 mm above the ground and suspended for at least 10 minutes. After unloading, it is visually inspected. After repeating this test three times, the structure shows no cracks, permanent deformation, or abnormal looseness or damage at the joints, indicating that it has passed the static load test. This mechanical automatic load locking / release sling device is suitable for large loads and has the advantages of compact structure, small size, light weight, and high reliability. During the test, the acceleration, deceleration, and speed are limited to the normal operating range of the sling. The sling is operated continuously for one hour according to the actual working cycle. All indicators, limit switches, and safety protection devices operate accurately, structural components are not damaged, and all parameters meet the technical performance index requirements, indicating that the dynamic load test has passed.

[0037] The above descriptions are only some embodiments of the present application and do not limit the scope of protection of the present application. Any equivalent device or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A self-clamping sling, characterized in that: The self-clamping sling includes a first jaw and a second jaw, wherein the first jaw and the second jaw are located at one end on the same side for connecting to the sling respectively, the middle part of the first jaw and the second jaw are hinged, and the other end of the first jaw and the second jaw are located on the same side for forming a clamping space, and the clamping space is used to clamp heavy objects; the first jaw and the second jaw can rotate relative to each other along the hinge position in the middle under the pulling action of the sling, thereby clamping the heavy object located in the clamping space.

2. The self-clamping sling according to claim 1, characterized in that: The first clamping jaw and the second clamping jaw are hinged via a pin.

3. The self-clamping sling according to claim 2, characterized in that: A plurality of first hinge holes are provided in the middle of the first clamping jaw, and a plurality of second hinge holes are provided in the middle of the second clamping jaw. The first hinge holes and the second hinge holes are arranged in a one-to-one correspondence, and the pin shafts can be selectively inserted into the corresponding first hinge holes and the second hinge holes.

4. The self-clamping sling according to claim 3, characterized in that: The first clamping jaw has a first sling connecting ring at one end connected to the sling, and the second clamping jaw has a second sling connecting ring at one end connected to the sling. The sling can be connected to the first sling connecting ring and the second sling connecting ring respectively.

5. The self-clamping sling according to claim 4, characterized in that: The first clamping jaw is provided with a first clamping portion at one end thereof for forming a clamping space, and the second clamping jaw is provided with a second clamping portion at one end thereof for forming a clamping space; the first clamping portion and the second clamping portion cooperate to form the clamping space.

6. The self-clamping sling according to claim 5, characterized in that: The first clamping portion and the second clamping portion are both arc-shaped structures, and the bending directions of the first clamping portion and the second clamping portion are opposite to each other.

7. The self-clamping sling according to claim 5, characterized in that: The first clamping jaw also includes a first main body, a first clamping portion is connected to one end of the first main body, the other end of the first main body is connected to the first sling connecting ring, and multiple first hinge holes are all provided on the first main body; the second clamping jaw also includes a second main body, a second clamping portion is connected to one end of the second main body, the other end of the second main body is connected to the second sling connecting ring, and multiple second hinge holes are all provided on the second main body.

8. The self-clamping sling according to claim 7, characterized in that: The self-clamping sling includes a plurality of first clamping parts of different shapes or sizes, and the plurality of first clamping parts can be selectively detachably connected to the first main body; the self-clamping sling includes a plurality of second clamping parts of different shapes or sizes, and the plurality of second clamping parts can be selectively detachably connected to the second main body.

9. The self-clamping sling according to claim 7, characterized in that: The first main body is provided with a slot, and the second main body is inserted into the slot and hinged to the first main body.

10. A hoisting assembly, characterized in that: The lifting assembly includes a sling and the self-clamping sling according to any one of claims 1 to 9, and the sling is connected to the self-clamping sling.

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