A balanced lifting method

Abstract

The present invention relates to a balanced lifting method, in which a lifting device lifts a workpiece through a balanced sling, and the balanced sling comprises a lifting rope, a first hook provided at both ends of the lifting rope, and two position-adjustable blocking assemblies provided on the lifting rope; the two first hooks are respectively hung at lifting points on both sides of the workpiece, and the second hook of the lifting device is hooked on the lifting rope to lift the balanced sling and the workpiece together, and the lifted workpiece is kept in a balanced state through several adjustments; the lifting rope is also provided with two blocking assemblies, which can be respectively clamped on both sides of the second hook to prevent the lifting rope from sliding on the second hook due to unstable center of gravity of the workpiece during the lifting process, thereby damaging the workpiece or even causing a high-altitude accident due to the falling off of the lifting rope.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting, in particular to a balanced lifting method. Background Art

[0002] Lifting is an essential basic guarantee for many industries such as casting and construction. In actual applications, since the center of gravity of most workpieces is not centered and the lengths and specifications are different, lifting is very difficult and there are also safety hazards.

[0003] In the existing technology, two special lifting ropes of different lengths are usually used to hang on both sides of the workpiece, where the shorter lifting rope is hung on the center of gravity side of the workpiece, and the longer lifting rope is hung on the non-center of gravity side of the workpiece. The two lifting ropes are then connected to the lifting equipment to achieve balanced lifting of the workpiece. However, this lifting method requires a special lifting rope of corresponding length for each specification of workpiece, and cannot be widely used. Summary of the Invention

[0004] Based on this, it is necessary to provide a balanced lifting method that is widely applicable, safe and reliable to address the above technical problems.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] An embodiment of the present invention discloses a balanced lifting method, in which a lifting device lifts a workpiece using a balanced lifting device, wherein the balanced lifting device includes a lifting rope, a first hook provided at both ends of the lifting rope, and two position-adjustable blocking assemblies provided on the lifting rope. The balanced lifting method includes the following steps:

[0007] S1, the two first hooks are respectively hooked to the lifting points on both sides of the workpiece, the second hook of the lifting device is hooked to the lifting rope, and the lifting device is started to lift the workpiece to a preset height;

[0008] S2. Determine whether the workpiece is in a balanced state. If not, start the lifting device to lower the workpiece to the ground, adjust the position of the second hook on the lifting rope, and start the lifting device again to raise the workpiece to a preset height.

[0009] S3, repeating step S2 until the workpiece is in a balanced state and determining the lifting point of the workpiece on the lifting rope;

[0010] S4, starting the lifting device to lower the workpiece to the ground, clamping the two blocking assemblies on both sides of the lifting point of the lifting rope, and hooking the second hook to the lifting point;

[0011] S5. Start the lifting equipment to lift the workpiece to a predetermined position.

[0012] In one embodiment, the blocking assembly includes a U-shaped card and a sleeve that is sleeved on the sling, the sleeve is provided with a card hole that matches the U-shaped card, and the distance between the two protruding ends of the U-shaped card matches the wire rope; the U-shaped card passes through the card hole and clamps the sleeve on the sling.

[0013] In one embodiment, in step S4, the two blocking assemblies are clamped on both sides of the lifting point of the lifting rope, and the blocking assemblies are 200 mm to 300 mm away from the lifting point.

[0014] In one embodiment, the two blocking assemblies are equidistant from the lifting point.

[0015] In one embodiment, the balancing sling further includes a load-bearing assembly, which includes a connecting rope, two connecting rods and a load-bearing block, one end of the connecting rope is connected to a blocking assembly, and the other end is connected to another blocking assembly, and the connecting rope is hung on the second hook; the load-bearing block is arranged below the second hook and is connected to a blocking assembly through a connecting rod, and is connected to another blocking assembly through another connecting rod.

[0016] Furthermore, the lengths of the two connecting rods are equal and the sum of the lengths of the two connecting rods is greater than the length of the connecting rope.

[0017] Furthermore, the weight of the load-bearing block is greater than the sum of the weights of the two blocking assemblies.

[0018] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0019] The balanced lifting method disclosed in the present invention uses only one lifting rope, is applicable to various workpieces, and has extremely wide applicability; the balanced lifting method disclosed in the present invention can accurately find the lifting point so that the workpiece is in a balanced state during the lifting process, and a blocking component is respectively provided on both sides of the lifting point to effectively prevent the second hook from sliding on the lifting rope during the lifting process to destroy the balanced state of the workpiece, thereby reducing the risk of the workpiece falling from a high altitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a balancing sling disclosed in an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A partial enlarged view of part A;

[0022] Description of reference numerals:

[0023] 100-second hook;

[0024] 210 - lifting rope, 220 - first lifting hook, 230 - blocking assembly, 231 - clamping sleeve, 232 - U-shaped clamp; 241 - connecting rope, 242 - connecting rod, 243 - weight block;

[0025] 300-artifacts. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0027] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "bottom end," "top end," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] The embodiment of the present invention discloses a balanced lifting method, which uses a balanced lifting device in conjunction with a lifting device to lift a workpiece. Figure 1 As shown, the balancing sling may include a sling rope 210, a first hook 220 and a blocking assembly 230. A first hook 220 is connected to each end of the sling rope 210. The two first hooks 220 are respectively hung at the lifting points on both sides of the workpiece 300. The second hook 100 of the lifting equipment is hooked on the sling rope 210 to lift the balancing sling and the workpiece 300 together; two blocking assemblies 230 are also provided on the sling rope 210, which can be respectively clamped on both sides of the second hook 100 to prevent the sling rope 210 from sliding on the second hook 100 due to the unstable center of gravity of the workpiece 300 during the lifting process, thereby damaging the workpiece 300 or even causing a high-altitude accident due to the falling of the sling rope 210.

[0030] In order to keep the workpiece 300 in a balanced state during the lifting process, the balanced lifting method disclosed in the embodiment of the present invention may include the following steps:

[0031] S1. The two first hooks 220 are hooked to the lifting points on both sides of the workpiece 300, and the second hook 100 is hooked to the lifting rope 210. The lifting equipment is started to lift the workpiece 300 to a preset height.

[0032] S2. Determine whether the workpiece 300 is in a balanced state. If not, start the lifting device to lower the workpiece 300 to the ground, adjust the position of the second hook 100 on the lifting rope 210, and start the lifting device to raise the workpiece 300 to the preset height again.

[0033] S3, repeat step S2 until the workpiece 300 is in a balanced state and the lifting point of the workpiece 300 is determined on the lifting rope 210;

[0034] S4. Start the lifting device to lower the workpiece 300 to the ground, clamp the two blocking assemblies 230 on both sides of the lifting point of the lifting rope 210, and hook the second hook 100 to the lifting point;

[0035] S5. Start the lifting equipment to lift the workpiece 300.

[0036] The clamping blocks 230 on either side of the lifting point ensure that the workpiece 300 remains balanced during the lifting operation. Even if the workpiece 300 swings and its center of gravity becomes unstable, causing the lifting rope 210 to slip slightly, the blocks 230 can prevent further slippage, preventing the workpiece from losing its balance and reducing the risk of the workpiece falling from a height.

[0037] It should be noted that the method for determining whether the workpiece 300 is in a balanced state is that the angle between the line between the hanging points on both sides of the workpiece 300 and the horizontal direction is less than 10°, that is, the workpiece 300 is in or approximately in a horizontal state, that is, the center of gravity of the workpiece 300 and the second hook 100 are in or approximately in the same vertical plane.

[0038] Furthermore, in steps S1 and S2, the preset height should be within a safe height range of the workpiece 300 from the ground, and the safe height range is preferably 100 mm to 300 mm from the workpiece 300 from the ground.

[0039] Furthermore, in step S4, two blocking assemblies 230 are clamped on both sides of the lifting point of the lifting rope 210. The distance between the blocking assemblies 230 and the lifting point can be 200 mm to 300 mm.

[0040] Preferably, the two blocking assemblies 230 are equidistant from the lifting point.

[0041] In the embodiments disclosed in the present invention, Figure 2As shown, the blocking assembly 230 may include a sleeve 231 and a U-shaped card 232. The sleeve 231 is sleeved on the sling 210. The sleeve 231 is provided with four holes matching the U-shaped card 232. The U-shaped card 232 passes through the holes and clamps the sleeve 231 on the sling 210.

[0042] It should be noted that, in order to ensure the clamping effect, the distance between the two protruding ends of the U-shaped clamp 232 should match the diameter of the hanging rope 210, and preferably be slightly smaller than the diameter of the hanging rope 210.

[0043] Furthermore, after the U-shaped clip 232 passes through the clip hole, nuts can be used to fasten the two protruding ends thereof.

[0044] Furthermore, two U-shaped clips 231 can be provided on one clip sleeve 231 , and accordingly, the number of the clip holes should be eight.

[0045] Of course, the present invention is not limited to the use of U-shaped card type blocking components, and spring type blocking components, etc. can also be used as long as the movement and fixing effects on the suspension rope are achieved.

[0046] In the embodiment disclosed in the present invention, the length of the lifting rope 210 is adjustable to meet the lifting requirements of workpieces 300 of different sizes. Figure 1 As shown, the end of the hanging rope 210 can pass through the connecting ring provided at the tail of the second hanging hook 220 and be fixed to the connecting rope 210 through a joint.

[0047] In the embodiment disclosed in the present invention, the balancing sling may further include a weight-bearing assembly to prevent the blocking assembly 230 from loosening and failing to perform its blocking function. Specifically, the weight-bearing assembly may be connected and assembled between steps S4 and S5.

[0048] Furthermore, the load-bearing assembly may include a connecting rope 241, two connecting rods 242 and a load-bearing block 243, one end of the connecting rope 241 is connected to one of the clamping sleeves 231, and the other end is connected to the other clamping sleeve 231, and the connecting rope 241 is hung on the second hook 100; a connecting ring is provided on the top of the load-bearing block 243, one end of the two connecting rods 242 are connected to the connecting ring, and the other ends of the two connecting rods 242 are respectively connected to the two clamping sleeves 231.

[0049] Preferably, the lengths of the two connecting rods 242 are equal and the sum of the lengths of the two connecting rods 242 is greater than the length of the connecting rope 241 .

[0050] Preferably, the weight of the load block 243 is greater than the sum of the weights of the two blocking assemblies 230 .

[0051] The balanced lifting method disclosed by the present invention is safe and reliable, and is particularly suitable for lifting operations of workpieces whose center of gravity is not centered.

[0052] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A balanced lifting method, wherein a lifting device lifts a workpiece through a balanced lifting device, characterized in that: The balancing sling includes a sling rope, first hooks provided at both ends of the sling rope, and two position-adjustable blocking assemblies provided on the sling rope; The blocking assembly includes a U-shaped card and a clamping sleeve that is sleeved on the sling rope. The clamping sleeve is provided with a clamping hole that matches the U-shaped card, and the distance between the two protruding ends of the U-shaped card matches the sling rope. The U-shaped card passes through the clamping hole and clamps the clamping sleeve on the sling rope. The balancing sling further includes a load-bearing assembly, which includes a connecting rope, two connecting rods, and a load-bearing block. One end of the connecting rope is connected to a blocking assembly, and the other end is connected to another blocking assembly, and the connecting rope is hung on a second hook. The load-bearing block is arranged below the second hook and is connected to one blocking assembly via a connecting rod, and is connected to the other blocking assembly via another connecting rod. The lengths of the two connecting rods are equal and the sum of the lengths of the two connecting rods is greater than the length of the connecting rope; The weight of the load block is greater than the sum of the weights of the two blocking assemblies; The balanced lifting method comprises the following steps: S1, the two first hooks are respectively hooked to the lifting points on both sides of the workpiece, the second hook of the lifting device is hooked to the lifting rope, and the lifting device is started to lift the workpiece to a preset height; S2. Determine whether the workpiece is in a balanced state. If not, start the lifting device to lower the workpiece to the ground, adjust the position of the second hook on the lifting rope, and start the lifting device again to raise the workpiece to a preset height. S3, repeating step S2 until the workpiece is in a balanced state and determining the lifting point of the workpiece on the lifting rope; S4, starting the lifting device to lower the workpiece to the ground, clamping the two blocking assemblies on both sides of the lifting point of the lifting rope, and hooking the second hook to the lifting point; S5. Start the lifting equipment to lift the workpiece to a predetermined position.

2. The balanced lifting method according to claim 1, characterized in that: In step S4, the two blocking assemblies are clamped on both sides of the lifting point of the lifting rope, and the blocking assemblies are 200 mm to 300 mm away from the lifting point.

3. The balanced lifting method according to claim 2, characterized in that: The two blocking assemblies are equidistant from the lifting point.

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