A center of gravity adjustable hanging beam

Abstract

The utility model discloses a kind of hanging beam with adjustable gravity center, including hanging beam main body and sliding assembly, sliding assembly is clamped on hanging beam main body, and with hanging beam main body sliding connection, sliding assembly is equipped with adjusting screw rod, the upper surface center position of hanging beam main body is fixed with rack, adjusting screw rod is connected with rack thread, rotating adjusting screw rod, drive sliding assembly to slide along the length direction of hanging beam main body, according to the lifting gravity center of being lifted object adjustment, ensure hoisting safety, adjusting screw rod is connected with rack thread, can produce greater moving moment, without being lifted object after adjusting gravity center, after trial lifting, the lifting object inclination can also adjust gravity center.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting equipment technology, specifically relating to a hoisting beam with an adjustable center of gravity. Background Technology

[0002] When lifting large, heavy objects, a single-beam, double-cable type of lifting beam is often used. To ensure the safety and stability of the lifting, the lifting center of gravity must coincide with the center of gravity of the object being lifted. The initial position of the lifting center of gravity of the lifting beam is on the center line of the lifting beam, but the center of gravity of the object being lifted may not coincide with its geometric center. If the lifting is carried out according to the initial position of the lifting center of gravity, it will be found that the object being lifted will tilt. Severe tilting may lead to safety accidents. Therefore, a lifting beam with an adjustable center of gravity is needed. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a lifting beam with an adjustable center of gravity, which is achieved through the following technical solution:

[0004] An adjustable center of gravity lifting beam includes a lifting beam body and a sliding assembly; the sliding assembly is softly connected to the crane hook via a sling, the sliding assembly is snapped onto the lifting beam body and slidably connected to the lifting beam body, the sliding assembly is provided with an adjusting screw, and a rack is fixedly provided at the center of the upper surface of the lifting beam body along its length direction, the adjusting screw is threadedly connected to the rack; by rotating the adjusting screw, the sliding assembly can be driven to slide along the length direction of the lifting beam body.

[0005] Furthermore, the main body of the lifting beam is an I-beam, and the sliding component is provided with an I-beam groove that is adapted to the I-beam. The sliding component is engaged with the main body of the lifting beam through the I-beam groove.

[0006] The adjusting screw includes: a first smooth rod section, a threaded section, and a second smooth rod section arranged coaxially, with the threaded section fixedly connected between the first smooth rod section and the second smooth rod section.

[0007] The top wall of the sliding component is recessed upward to form a cavity, and through holes are opened on both ends of the side wall of the cavity.

[0008] The threaded section of the adjusting screw is located in the cavity. The first and second smooth sections are inserted into the corresponding through holes and are rotatably connected to the sliding assembly through the bearing. The threaded section is threadedly connected to the rack.

[0009] The threaded section is connected to the rack and pinion, which can generate a large moving torque. It is not necessary to adjust the center of gravity after the suspended object is placed on the ground. After a trial lift, it was found that the center of gravity can be adjusted even if the suspended object is tilted.

[0010] Furthermore, the first polished rod section extends to the outside of the corresponding through hole, and a handle is fixedly connected to the end of the first polished rod section. The part of the first polished rod section near the handle is provided with external threads, and a positioning nut is fitted on the external thread section.

[0011] After adjusting the center of gravity, tighten the positioning nut. The side of the positioning nut away from the handle will then be tightly pressed against the sliding component, achieving a locking effect and preventing the sliding component from sliding again during hoisting after the center of gravity has been adjusted.

[0012] Furthermore, in the initial state, the vertical centerline of the sliding component coincides with the vertical centerline of the main body of the lifting beam; when adjusting the center of gravity, the sliding component can slide to the left or right by a distance not exceeding 3% of the length of the main body of the lifting beam. Limiting the adjustment distance ensures safe lifting.

[0013] Compared with existing technologies, the beneficial effects are as follows:

[0014] The device described in this utility model can adjust the position of the hook according to the center of gravity of the object being lifted, ensuring lifting safety. The adjusting screw is threadedly connected to the rack and pinion, which can generate a large moving torque. It is not necessary to adjust the center of gravity after the object being lifted is placed on the ground. If the object being lifted is found to be tilted after a trial lift, the center of gravity can also be adjusted. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating an application scenario of this utility model;

[0016] Figure 2 This is a schematic diagram showing the sliding component when it is slid to its left limit position.

[0017] Figure 3 This is a schematic diagram showing the sliding component when it is slid to its right limit position.

[0018] Figure 4 This is a schematic diagram of the main body of the lifting beam;

[0019] Figure 5 This is a schematic diagram of the adjusting screw;

[0020] Figure 6 This is a schematic diagram of the assembly of the adjusting screw and the sliding component.

[0021] In the diagram, 100 is the main body of the lifting beam, 101 is the rack, 200 is the sliding component, 300 is the adjusting screw, 301 is the handle, 302 is the positioning nut, 303 is the first smooth rod section, 304 is the threaded section, and 305 is the second smooth rod section. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0023] Please see Figure 1 The adjustable center of gravity lifting beam includes a main body 100 and a sliding assembly 200. The main body 100 is an I-beam. The sliding assembly 200 is provided with an I-beam groove that is adapted to the I-beam. The sliding assembly 200 is snapped onto the I-beam of the main body 100 and is slidably connected to the main body 100. During lifting, the crane hook is flexibly connected to the sliding assembly 200 through a sling. Suspension assemblies are symmetrically arranged on both sides of the main body 100 along its length. The suspension assemblies are fixedly connected to the main body 100 and are flexibly connected to the object being lifted through ropes for lifting.

[0024] The vertical centerline of the sliding component 200 is the lifting center of gravity line. In the initial state, the vertical centerline of the sliding component 200 coincides with the vertical centerline of the lifting beam body 100. Figure 2 , 3 In section 6, the vertical black line on the side of the sliding component 200 is the vertical center line marker of the sliding component 200. The initial state refers to the state where the object to be lifted is not yet attached.

[0025] The center of gravity of the suspended object may not coincide with its geometric center, such as Figure 1 The center of gravity of an elongated object, such as a rotor, is a distance from the center of its axis. If it is lifted at the initial position of the center of gravity line, the object will tilt, and a serious tilt may cause a safety accident.

[0026] To prevent the suspended object from tilting, the lifting center of gravity needs to be adjusted. An adjusting screw 300 for adjusting the lifting center of gravity is installed on the sliding assembly 200. Please refer to [link / reference needed]. Figure 5 The adjusting screw 300 includes: a first smooth rod section 303, a threaded section 304, and a second smooth rod section 305 arranged coaxially. One end of the threaded section 304 is fixedly connected to the first smooth rod section 303, and the other end of the threaded section 304 is fixedly connected to the second smooth rod section 305.

[0027] Please see Figure 6 A cavity is formed by an upward-recessed top wall within the I-beam groove of the sliding assembly 200, with through holes on both end side walls. The threaded section 304 of the adjusting screw 300 is located within the cavity, and the first smooth section 303 and the second smooth section 305 are respectively inserted into their corresponding through holes and rotatably connected to the sliding assembly 200 via bearings.

[0028] The first polished rod section 303 extends to the outside of the corresponding through hole, and a handle 301 is fixedly connected to the end of the first polished rod section 303. The part of the first polished rod section 303 near the handle 301 is provided with external threads, and a positioning nut 302 is fitted on the external thread section.

[0029] Please see Figure 4A rack 101 is fixedly installed on the upper surface of the main body 100 of the lifting beam. The rack 101 is located at the center of the upper surface of the main body 100 of the lifting beam, and its length direction is consistent with the length direction of the main body 100 of the lifting beam. The upper surface of the rack 101 is provided with a thread that is compatible with the threaded section 304.

[0030] After the sliding assembly 200 of the adjusting screw 300 is assembled onto the lifting beam body 100, the threaded section 304 is threadedly connected to the rack 101. This threaded connection between the threaded section 304 and the rack 101 generates a large moving torque. When it is necessary to adjust the lifting center of gravity, the operator rotates the handle 301 forward or backward, causing the sliding assembly 200 to slide left or right on the lifting beam body 100 via the threaded section 304 and the rack 101, thus adjusting the lifting center of gravity.

[0031] There are two methods for adjusting the center of gravity: First, adjustment before lifting. If the outer packaging of the object being lifted has a lifting center of gravity mark, or the lifting instruction manual has a center of gravity description, then adjustment before lifting is used. Based on the position of the lifting center of gravity of the object on the axis, the direction of deviation from the axis center, and the proportion of the deviation to the length of the axis, before lifting, the sliding component 200 is rotated according to the principle of "same deviation direction, equal proportion". Secondly, adjustment during trial lifting: When the outer packaging of the object being lifted does not have a lifting center of gravity mark, or the lifting instructions do not specify a center of gravity, adjustment can be made during trial lifting. During the trial lift, as soon as the object is lifted off the ground, visual inspection or measurement with a level shows that the object is tilted beyond the allowable range. If the handle 301 is within reach, or can be reached with simple climbing tools, the center of gravity can be adjusted directly during the trial lift. If it is not within reach or the operator's strength is limited during trial lifting, a steel pipe or iron pipe can be used to attach to the handle 301 to increase torque and adjust the center of gravity until the tilt does not exceed the allowable range. This eliminates the need to adjust the center of gravity after the object is placed on the ground, improving work efficiency.

[0032] According to the specifications, the adjustment range of the lifting center of gravity should not be too large. In this embodiment, the distance of sliding to the left or right should not exceed 3% of the length of the main body of the lifting beam.

[0033] Before adjusting the lifting center of gravity, loosen the positioning nut 302 to move it toward the handle 301. After the lifting center of gravity is adjusted, to prevent the adjusting screw 300 from rotating due to accidental disturbance and causing the sliding component 200 to slip, tighten the positioning nut 302 until the side away from the handle 301 is tightly against the left side of the sliding component 200, thereby locking the adjusting screw 300.

[0034] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A lifting beam with an adjustable center of gravity, characterized in that, It includes a main body of the lifting beam and a sliding assembly; the sliding assembly is softly connected to the crane hook via a sling, the sliding assembly is snapped onto the main body of the lifting beam and slidably connected to the main body of the lifting beam, the sliding assembly is provided with an adjusting screw, and a rack is fixedly provided at the center of the upper surface of the main body of the lifting beam along its length direction, the adjusting screw is threadedly connected to the rack; by rotating the adjusting screw, the sliding assembly can be driven to slide along the length direction of the main body of the lifting beam.

2. The adjustable center of gravity lifting beam according to claim 1, characterized in that, The main body of the lifting beam is an I-beam, and the sliding component is provided with an I-beam groove that is compatible with the I-beam. The sliding component is engaged with the main body of the lifting beam through the I-beam groove. The adjusting screw includes: a first smooth rod section, a threaded section and a second smooth rod section arranged coaxially, with the threaded section fixedly connected between the first smooth rod section and the second smooth rod section; The sliding component has an upward-recessed top wall in the I-shaped groove to form a cavity, and through holes are provided on both ends of the side walls of the cavity. The threaded section of the adjusting screw is located in the cavity, the first and second smooth sections are respectively inserted into the corresponding through holes, and are rotatably connected to the sliding assembly through the bearing. The threaded section is threadedly connected to the rack.

3. The adjustable center of gravity lifting beam according to claim 2, characterized in that, The first polished rod section extends to the outside of the corresponding through hole, and a handle is fixedly connected to the end of the first polished rod section. The part of the first polished rod section near the handle is provided with external threads, and a positioning nut is fitted on the external thread section. After adjusting the center of gravity, tighten the positioning nut, and the side of the positioning nut away from the handle will be tightly pressed against the sliding component.

4. The adjustable center of gravity lifting beam according to claim 1, characterized in that, In the initial state, the vertical centerline of the sliding component coincides with the vertical centerline of the main body of the lifting beam; when adjusting the center of gravity, the sliding component slides to the left or right by a distance not exceeding 3% of the length of the main body of the lifting beam.

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