Adjustable balance type lifting appliance

Abstract

The utility model is suitable for the field of nuclear power equipment hoisting and discloses an adjustable balance type lifting appliance. Comprising a main beam, two auxiliary beams movably connected with the two ends of the main beam and capable of moving relative to the main beam, a hoisting assembly arranged in the middle of the main beam and connected with a crane, a locking assembly arranged on the main beam and used for limiting the auxiliary beams, and connecting assemblies arranged at the two ends of the auxiliary beams and used for connecting and hoisting equipment. Firstly, the main beam is erected on the top of to-be-hoisted equipment and is in positioning connection with the equipment through the connecting assemblies arranged at the two ends of the auxiliary beam. The crane carries out hoisting operation through the hoisting assembly in the middle of the main beam, if a hoisting tool does not reach a horizontal balance state in the trial hoisting process, hoisted equipment needs to be temporarily unloaded, and dynamic calibration is carried out by adjusting the relative sliding position between the main beam and the auxiliary beam; according to the lifting appliance, the inclined pulling and inclined lifting risk is effectively eliminated through an adjusting mechanism, and the safety and work efficiency of nuclear power equipment lifting operation are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting and hoisting of nuclear power equipment, and in particular to an adjustable balance hoist. Background Technology

[0002] Nuclear power plants contain a large number of heavy equipment, some weighing several tons. Due to significant differences in the center of gravity of these equipment, traditional lifting slings are prone to uneven load distribution during hoisting operations, leading to skewed or tilted lifting, which can cause equipment to sway, tilt, or even fall, posing significant safety hazards. Furthermore, existing hoisting methods require highly skilled operators and involve lengthy adjustment times, severely limiting the efficiency of hoisting operations and failing to meet the timeliness requirements for the installation and maintenance of precision equipment in nuclear power plants. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an adjustable balance lifting device.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct an adjustable balance lifting device, including: a main beam, two secondary beams respectively disposed at both ends of the main beam and moving relative to the main beam, a lifting assembly disposed in the middle of the main beam and connected to a crane, a locking assembly disposed on the main beam and locking the secondary beams, and a connecting assembly disposed at both ends of the secondary beams and used for connecting and lifting equipment.

[0005] In some embodiments, the lifting assembly includes a first lifting ring connected to a crane, a lug seat disposed on the main beam, and two second lifting rings rotatably connecting the first lifting ring and the lug seat.

[0006] In some embodiments, the lug seat is disposed on the central axis of the main beam along its length.

[0007] In some embodiments, the locking assembly includes first threaded holes respectively disposed at both ends of the main beam, and a limiting screw connected to the first threaded holes and abutting against the secondary beam.

[0008] In some embodiments, the upper end of the limiting screw is provided with a handle that is movably connected to the limiting screw, and the handle can move relative to the limiting screw.

[0009] In some embodiments, two of the first threaded holes are provided at each end of the main beam, and the number of the handle and the limiting screw matches the number of the first threaded holes.

[0010] In some embodiments, the main beam has long slots at both ends that pass through both ends of the main beam and are used for the passage of the secondary beam, and the shape of the long slots matches the shape of the secondary beam.

[0011] In some embodiments, a fixed slide is provided in the long groove, and a track is provided at the bottom of the sub-beam that is slidably connected to the fixed slide.

[0012] In some embodiments, the connecting assembly includes a third lifting ring connected to the device and a lifting lug shaft that detachably connects the third lifting ring to the sub-beam, wherein the sub-beam has storage slots at both ends for accommodating the third lifting ring.

[0013] In some embodiments, the bottom of the sub-beam is provided with a limiting member for limiting the maximum displacement distance of the main beam, and the limiting member is disposed on both sides of the main beam.

[0014] The adjustable balancing lifting device of this invention has the following advantages: First, the main beam is erected on top of the equipment to be lifted, and then connected to the equipment via connecting components at both ends of the secondary beam. The crane performs the lifting operation via the lifting component in the middle of the main beam. If the lifting device does not reach a horizontal balance during the trial lift, the equipment to be lifted needs to be temporarily unloaded, and dynamic calibration is performed by adjusting the relative sliding position between the main beam and the secondary beam. After multiple fine adjustments until the lifting device is horizontally stable, the locking component is used to lock the relative position of the main beam and the secondary beam, ultimately achieving single-point balanced lifting. This lifting device effectively eliminates the risk of skewed or oblique lifting through its adjustment mechanism, significantly improving the safety and efficiency of nuclear power equipment lifting operations. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0016] Figure 1 This is an overall view of an adjustable balancing lifting device according to one embodiment of the present utility model;

[0017] Figure 2 This is a front view of an adjustable balancing lifting device according to one embodiment of the present invention;

[0018] Figure 3 This is a side view of an adjustable balancing lifting device according to one embodiment of the present invention;

[0019] Figure 4 This is a view showing the movement of an adjustable balancing lifting device before and after one embodiment of the present invention.

[0020] Figure Labels

[0021] 100. Main beam; 200. Secondary beam; 210. Limiting component; 220. Track; 230. Storage slot; 300. Lifting assembly; 310. First lifting ring; 320. Second lifting ring; 330. Lifting lug seat; 400. Connecting assembly; 410. Third lifting ring; 420. Lifting lug shaft; 500. Locking assembly; 510. First threaded hole; 520. Limiting screw; 530. Handle. Detailed Implementation

[0022] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "upper," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0023] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] Figures 1 to 4This invention illustrates an adjustable balancing hoist according to one embodiment, which can be used for radiation shielding inside nuclear power plants. It includes a main beam 100, two secondary beams 200 respectively disposed at both ends of the main beam 100 and movable relative to it, a hoisting assembly 300 disposed in the middle of the main beam 100 and connected to a crane, a locking assembly 500 disposed on the main beam 100 and locking the secondary beams 200, and connecting assemblies 400 disposed at both ends of the secondary beams 200 for connecting and hoisting equipment. First, the main beam 100 is erected on top of the equipment to be hoisted, and then positioned and connected to the equipment via the connecting assemblies 400 at both ends of the secondary beams 200. The crane performs the hoisting operation via the hoisting assembly 300 in the middle of the main beam 100. If the hoisting device does not reach a horizontal balance during the trial hoisting, the hoisted equipment needs to be temporarily unloaded, and dynamic calibration is performed by adjusting the relative sliding position between the main beam 100 and the secondary beams 200. After several fine-tuning adjustments until the lifting device is horizontally stable, the locking assembly 500 is used to lock the relative positions of the main beam 100 and the secondary beam 200, ultimately achieving single-point balanced lifting. This lifting device effectively eliminates the risk of skewed or oblique lifting through its adjustment mechanism, significantly improving the safety and efficiency of nuclear power equipment lifting operations.

[0025] In one specific embodiment, the main beam 100 and the secondary beam 200 are hollow steel structures, which can significantly reduce the weight of the main beam 100 and the secondary beam 200, and reduce the weight of the lifting equipment.

[0026] It should be understood that the dimensions of the main beam 100 and the secondary beam 200 are increased or decreased according to the actual load.

[0027] Figure 2 and Figure 3 The lifting assembly 300 shown in one embodiment may include a first lifting ring 310 connected to a crane, a lifting lug 330 disposed on the main beam 100, and two second lifting rings 320 rotatably connecting the first lifting ring 310 and the lifting lug 330, the two second lifting rings 320 providing greater stability to the main beam 100.

[0028] In one specific embodiment, the number of second lifting rings 320 can be two or more.

[0029] Figure 1 and Figure 4 The lifting lug 330 is shown in one embodiment and may be positioned along the central axis of the main beam 100 in the length direction to prevent the crane from deviating when lifting the main beam 100.

[0030] In one specific embodiment, the lug 330 is positioned at the center point of the main beam 100.

[0031] Figure 1 , Figure 2 and Figure 3The locking assembly 500, as shown in one embodiment, may include first threaded holes 510 respectively disposed at both ends of the main beam 100, and limiting screws 520 connected to the first threaded holes 510 and abutting against the sub-beam 200. The limiting screws 520, by screwing into the first threaded holes 510, lock the sub-beam 200, thereby restricting the movement of the sub-beam 200 relative to the main beam 100. After the center is adjusted, the limiting screws 520 lock the movement of the sub-beam 200, thus forming a rigid body between the sub-beam 200 and the main beam 100.

[0032] Figure 1 , Figure 2 and Figure 3 In one embodiment, the limiting screw 520 may include a handle 530 movably connected to the upper end of the limiting screw 520. The handle 530 is movable relative to the limiting screw 520 and is used to rotate the limiting screw 520. When the handle 530 is difficult to rotate after being rotated to a certain angle, the handle 530 can be pushed to the other end to facilitate the user to continue rotating the screw.

[0033] Figure 1 , Figure 2 and Figure 3 The first threaded hole 510 is shown in one embodiment. Two first threaded holes 510 are respectively provided at both ends of the main beam 100. The number of handles 530 and limiting screws 520 matches the number of first threaded holes 510. Each sub-beam 200 is locked with two limiting screws 520 to prevent the entire sub-beam 200 from sliding directly on the main beam after one limiting screw 520 comes loose.

[0034] In one specific embodiment, the number of first threaded holes 510 can be more than two, depending on the actual load.

[0035] Figure 1 , Figure 2 and Figure 4 The main beam 100 is shown in one embodiment to include long slots at both ends of the main beam 100 that pass through both ends of the main beam 100 and are used for the passage of the secondary beam (200), the shape of the long slots matching the shape of the secondary beam 200.

[0036] Figure 2 and Figure 3 In one embodiment, the elongated groove may include a fixed slide table inside the groove, and a track 220 at the bottom of the sub-beam 200 that is slidably connected to the fixed slide table. The cooperation between the fixed slide table and the track 220 can make the relative movement between the main beam 100 and the sub-beam 200 smoother, greatly reducing the friction between the main beam 100 and the sub-beam 200. The main beam 100 can also be moved directly by manpower, which is convenient for adjusting the center of gravity.

[0037] Figure 2and Figure 3 The connecting assembly 400 is shown in one embodiment to include a third lifting ring 410 connected to the device and a lifting lug shaft 420 for detachably connecting the third lifting ring 410 to the sub-beam 200, the sub-beam 200 having storage slots 230 at both ends for receiving the third lifting ring 410.

[0038] Figure 2 and Figure 3 In one embodiment, the sub-beam 200 may include a limiting member 210 at the bottom of the sub-beam 200 for limiting the maximum displacement distance of the main beam 100. The limiting member 210 is provided on both sides of the main beam 100 and at both ends of the track 220 to prevent the sub-beam 200 from sliding out of the fixed slide.

[0039] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. An adjustable balance lifting device, characterized in that, include: The main beam (100), two secondary beams (200) respectively disposed at both ends of the main beam (100) and movable relative to the main beam (100), a hoisting assembly (300) disposed in the middle of the main beam (100) and connected to a crane, a locking assembly (500) disposed on the main beam (100) and locking the secondary beams (200), and a connecting assembly (400) disposed at both ends of the secondary beams (200) and used for connecting and hoisting equipment.

2. The adjustable balance lifting device according to claim 1, characterized in that, The lifting assembly (300) includes a first lifting ring (310) connected to a crane, a lifting lug (330) disposed on the main beam (100), and two second lifting rings (320) rotatably connected to the first lifting ring (310) and the lifting lug (330).

3. The adjustable balance lifting device according to claim 2, characterized in that, The lug seat (330) is positioned along the length of the central axis of the main beam (100).

4. The adjustable balance lifting device according to claim 1, characterized in that, The locking assembly (500) includes a first threaded hole (510) respectively disposed at both ends of the main beam (100) and a limiting screw (520) connected to the first threaded hole (510) and abutting against the secondary beam (200).

5. An adjustable balancing lifting device according to claim 4, characterized in that, The upper end of the limiting screw (520) is provided with a handle (530) which is movably connected to the limiting screw (520), and the handle (530) can move relative to the limiting screw (520).

6. An adjustable balancing lifting device according to claim 5, characterized in that, Two first threaded holes (510) are respectively provided at both ends of the main beam (100), and the number of handles (530) and limiting screws (520) matches the number of first threaded holes (510).

7. An adjustable balancing lifting device according to claim 1, characterized in that, The main beam (100) has long grooves at both ends that pass through both ends of the main beam and are used for the passage of the secondary beam (200). The shape of the long grooves matches the shape of the secondary beam.

8. An adjustable balancing lifting device according to claim 7, characterized in that, The long groove is provided with a fixed slide, and the bottom of the sub-beam (200) is provided with a track (220) that is slidably connected to the fixed slide.

9. An adjustable balancing lifting device according to claim 1, characterized in that, The connecting assembly (400) includes a third lifting ring (410) connected to the equipment and a lifting lug shaft (420) that detachably connects the third lifting ring (410) to the sub-beam (200). The sub-beam (200) has storage slots (230) at both ends for accommodating the third lifting ring (410).

10. An adjustable balancing lifting device according to claim 1, characterized in that, The bottom of the sub-beam (200) is provided with a limiting member (210) for limiting the maximum displacement distance of the main beam (100), and the limiting member (210) is provided on both sides of the main beam (100).

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