A steel pipe hoisting device for reducing spin

Abstract

This utility model discloses a steel pipe hoisting device for reducing spin, including a frame, a hook for connecting to a hoisting device, and one or more placement portions for accommodating steel pipes on the circumference of the frame. Each placement portion is connected to a constraint component for limiting the spin of the steel pipe. This utility model, by setting the constraint component, constrains the steel pipe, ensuring stability during hoisting and reducing collision accidents caused by pipe swaying and spin.

Description

Technical Field

[0001] This utility model relates to the field of building material transportation devices, and in particular to a steel pipe hoisting device for reducing spin. Background Technology

[0002] In scaffolding installation projects, the hoisting of scaffolding pipes is a crucial and frequent process. Currently, the vertical hoisting of multiple scaffolding pipes typically involves simple binding or direct hoisting using ordinary hooks. However, this traditional method has several drawbacks: Firstly, the lack of effective restraint during hoisting makes the pipes prone to displacement due to swaying and collisions. This can damage the pipe surface, affecting the quality of scaffolding construction, and poses a risk of falling pipes causing accidents and threatening the safety of construction workers. Secondly, traditional methods struggle to ensure the stability of the pipe's center of gravity during hoisting, easily generating static rotational torque. This results in uneven stress on the hoisting equipment, increasing equipment wear and tear, and also increasing the difficulty and danger of hoisting operations during scaffolding installation, hindering the smooth progress of the installation work. Furthermore, existing scaffolding pipe hoisting devices are inconvenient to operate when loading and unloading pipes, often requiring workers to spend a significant amount of time and effort on adjustments, severely impacting the efficiency of scaffolding installation. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a steel pipe hoisting device for reducing spin, which can transport steel pipes by vertical hoisting and reduce the occurrence of overall spin during the hoisting process.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a steel pipe hoisting device for reducing spin, comprising a frame, wherein a hook for connecting to a hoisting device is provided on the frame, and one or more placement parts for accommodating steel pipes are provided on the circumference of the frame, wherein a constraint component for limiting the spin of the steel pipe is connected to the placement part.

[0005] Furthermore, the constraint component includes a rope, which is movably connected to the placement part. Positioning holes are symmetrically arranged at both ends of the placement part. The two ends of the rope pass through the positioning holes and are fixed. The bottom of the rope is U-shaped.

[0006] Furthermore, a fixing part is provided on the U-shaped rope to support the bottom of the steel pipe.

[0007] Furthermore, the constraint assembly includes a telescopic arm and a receiving plate. The telescopic arm includes an outer sleeve and an inner sleeve that are nested and slidably arranged. One end of the outer sleeve is fixed to the frame, and the other end of the outer sleeve is slidably connected to the inner sleeve. The other end of the inner sleeve is slidably connected to the outer sleeve, and the other end of the inner sleeve is fixed to the receiving plate.

[0008] Furthermore, an opening is provided at the end of the placement part that is away from the center of the frame.

[0009] Furthermore, locating keys are symmetrically arranged on both sides of the opening, and baffles are connected to the locating keys. The baffles and locating keys are detachably connected.

[0010] Furthermore, the receiving plate is provided with one or more limiting parts.

[0011] Furthermore, the distance between the center of the limiting part and the axis of the frame is less than the distance between the center of the placement part and the axis of the frame.

[0012] Furthermore, the number of limiting parts is the same as the number of placement parts, and their positions correspond one-to-one.

[0013] Furthermore, the centerline of the hook is collinear with the centerline of the frame.

[0014] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0015] 1. This utility model uses a constraint component to restrain the pipe by utilizing the constraint space formed by ropes and the frame. Simultaneously, by rationally designing the rope length, the center of gravity of the frame and the center of gravity of the pipe are positioned in a specific relationship, effectively reducing the generation of static rotational torque and ensuring the stability of the pipe during hoisting, thus reducing safety accidents caused by pipe swaying or falling. Furthermore, the fixing part on the rope is inserted into the pipe end, further limiting pipe deviation and greatly improving the safety of the device.

[0016] 2. The receiving plate, outer sleeve, and inner sleeve structure installed on the frame allow workers to place pipes without having to raise the frame in advance, making the operation more convenient and efficient. Meanwhile, the placement section adopts a U-shaped structure with one open end, along with a baffle, which facilitates pipe placement while effectively preventing pipes from falling from the open end, ensuring convenience and safety during pipe loading and unloading. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram showing the connection between the frame and the ropes of this utility model;

[0019] Figure 3 This is a schematic diagram of the frame structure in the first embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the positioning hole of this utility model;

[0021] Figure 5 This is a schematic diagram showing the connection between the rope and the fixing part of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the fixing part of this utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0024] Figure 8 This is a schematic diagram showing the connection between the frame and the receiving plate of this utility model;

[0025] Figure 9 This is a schematic diagram of the frame structure in the second embodiment of the present invention;

[0026] Figure 10 This is a schematic diagram of the structure of the baffle of this utility model.

[0027] The components include: frame 1; hook 11; placement part 12; positioning key 121; baffle 122; positioning hole 13; outer sleeve 14; inner sleeve 15; receiving plate 16; limiting part 17; rope 2; fixing part 21; and steel pipe 3. Detailed Implementation

[0028] Example

[0029] like Figure 1 As shown, in order to solve the technical problems proposed in the background art, this embodiment provides a steel pipe hoisting device for reducing spin. It adopts a vertical hoisting method and transports multiple pipes at the same time. The device includes a frame 1 for supporting the whole device and multiple constraint components connected to the frame 1 for restricting the movement of the pipes.

[0030] like Figure 2 As shown, a lifting hook 11 for hoisting is provided at the center of the top of the frame 1. The axis of the hook 11 is collinear with the axis of the frame 1 and is fixedly connected to the frame 1. The frame 1 has multiple placement sections 12 for placing pipes. Figure 3 As shown, the placement part 12 is circular, with its inner diameter slightly larger than the outer diameter of the steel pipe 3. The steel pipe 3 is placed inside the placement part 12 by insertion. A pair of positioning holes 13 are symmetrically arranged on the outer periphery of the placement part 12. A restraint assembly is connected to the placement part 12 to support the bottom end of the steel pipe 3 and prevent it from falling during hoisting. Figure 1As shown, the constraint assembly includes ropes 2 slidably connected to both ends of the placement part 12. Preferably, the ropes 2 are nylon ropes of a certain width, which can be inserted into the positioning holes 13 by compression. Both ends of the ropes 2 pass through the positioning holes 13 and are located at the top of the frame 1. Detachable steel wire rope U-clamps are connected to both ends of the ropes 2, allowing them to be fixedly connected to the positioning holes 13. The frame 1 and the ropes 2 constitute a constraint space for constraining the movement of the steel pipe 3 within the placement part 12, and this constraint space is less than the length of the steel pipe 3. The length of the ropes 2 depends on the specifications of the steel pipe 3 to ensure that during the hoisting and transportation of the steel pipe 3 within the placement part 12, the center of gravity of the frame 1 and the center of gravity of the steel pipe 3 are on the same horizontal plane, or the center of gravity of the frame 1 is a certain distance higher than the plane containing the center of gravity of the steel pipe 3. This positioning ensures that the center of gravity of the steel pipe 3 falls inside the placement part 12, thereby making the gravity line of the assembly formed by the frame 1, the steel pipe 3 supported on the frame 1, and other accessories as close as possible to the tension line of the slings. In this state, the horizontal torque is significantly reduced, fundamentally reducing the conditions for the generation of static rotational torque, which helps to improve the stability and safety of the overall structure during hoisting.

[0031] Furthermore, to prevent the steel pipe 3 from slipping off the rope 2 during hoisting and transportation, a fixing part 21 is fixedly connected to the rope 2 to support and restrict the movement of the steel pipe 3. Figure 6 As shown, the fixing part 21 has a hollow cylindrical structure extending axially in the middle. The rope 2 is threaded through the bottom of the fixing part 21 in a U-shape and is detachably connected to a wire rope U-clamp. The fixing part 21 can be fixed to the rope 2 using the U-clamp. The fixing part 21 can be used with the steel pipe 3 in two ways: one is that the outer diameter of the hollow cylindrical structure of the fixing part 21 is slightly smaller than the inner diameter of the steel pipe 3, and the other is that the inner diameter of the hollow cylindrical structure is slightly larger than the outer diameter of the steel pipe 3. By using a plug-in fitting method to constrain the steel pipe 3, the probability of it rotating can be effectively reduced; at the same time, during the hoisting process, it can be ensured that the steel pipe 3 and the fixing part 21 will not actively separate. To accommodate steel pipes 3 of different sizes, a hollow cylindrical structure of the corresponding size can be selected.

[0032] When using the device:

[0033] Workers use tower cranes or other hoisting equipment to connect to hooks 11 on the frame 1, lifting the frame 1 a certain height off the ground. The distance is determined by the length of the steel pipes 3. Workers first insert each steel pipe 3 into its corresponding placement part 12, then connect the bottom of the steel pipe 3 to the hollow cylindrical structure of the corresponding fixing part 21, using the fixing part 21 to radially constrain the steel pipe 3. After all steel pipes 3 are assembled, the frame 1 is further lifted. Under gravity, the fixing part 21 supports the bottom of the steel pipe 3, and the ropes 2 in each placement part 12 are located on both sides of the corresponding steel pipe 3. During hoisting and transportation, the constraint of the bottom of the steel pipe 3 by the fixing part 21, the constraint of the top of the steel pipe 3 by the frame 1, and the constraint of the sides of the steel pipe 3 by the ropes 2 effectively reduce the probability of the steel pipe 3 spinning during movement. After the frame 1 is transported to the designated position, it is lowered to the ground. Workers then separate the steel pipe 3 from the fixing part 21 and pull the steel pipe 3 out of the placement part 12.

[0034] Example

[0035] Based on Example 1, in order to facilitate workers to place the steel pipe 3 on the frame 1 without having to raise the frame 1 to a certain height beforehand, this example further improves the structure of the constraint component.

[0036] like Figure 7 As shown, the constraint assembly includes a receiving plate 16, which is the same size and shape as the frame 1. The receiving plate 16 is located below the frame 1, and the frame 1 and the receiving plate 16 are slidably connected by a telescopic arm. The frame 1, the telescopic arm, and the receiving plate 16 are coaxially arranged. The telescopic arm is a common telescopic structure. This embodiment only introduces one type of telescopic structure, but it does not mean that other telescopic structures with the same function are not applicable to this embodiment. The telescopic boom includes an outer sleeve 14 and an inner sleeve 15 nested and slidably arranged. One end of the outer sleeve 14 is fixed to the frame 1, and the other end is sleeved on the outside of the inner sleeve 15. A limiting structure is provided at the end of the outer sleeve 14 near the inner sleeve 15 to prevent the inner sleeve 15 from coming off. One end of the inner sleeve 15 is slidably arranged inside the outer sleeve 14, and the other end is fixed to the receiving plate 16. The outer sleeve 14 and the inner sleeve 15 are not in a clearance or transition fit. To prevent radial sway between the inner and outer sleeves, a guide assembly can be provided between the outer sleeve 14 and the inner sleeve 15. The guide assembly can adopt existing structures such as linear guide rails or convex-concave sliding grooves. The minimum distance between the frame 1 and the receiving plate 16 is the same as or slightly greater than the height of the center of gravity when the steel pipe 3 is placed vertically, ensuring that the gravity line of the steel pipe 3 coincides with the tension line of the sling. The receiving plate 16 is provided with multiple... Figure 7The limiting part 17 shown has the same number as the placement part 12 and is positioned accordingly. Each limiting part 17 is an arc-shaped boss extending in the axial direction. The arc-shaped boss can form a circle on its own or can be formed by multiple arcs together. The inner diameter of the circle formed by the arc-shaped boss is larger than the outer diameter of the steel pipe 3.

[0037] like Figure 8 and Figure 9 As shown, furthermore, to facilitate the placement of the steel pipe 3 inside the device, the placement part 12 is a U-shaped structure with an opening at one end, and positioning keys 121 are symmetrically arranged on both sides of the placement part 12. Figure 10 As shown, a baffle 122 is provided on the placement part 12, which is detachably mounted to the positioning key 121. Specifically, slots for connecting to the positioning key 121 are provided on the left and right end faces of the baffle 122. When the baffle 122 is connected to the positioning key 121, the movement of the baffle 122 is restricted by the positioning key 121. The baffle 122 is used to seal the opening of the placement part 12, preventing the steel pipe 3 from falling out of the opening end of the placement part 12. Since the baffle 122 can only be separated from the positioning key 121 by moving horizontally towards the center of the frame 1, the distance between the two opposing inner walls of the placement part 12 is matched with the length of the baffle 122 to facilitate its detachable connection through movement. When the center distance between the limiting part 17 and the frame 1 is less than the center distance between the placement part 12 and the frame 1, when one end of the steel pipe 3 is placed on the limiting part 17, the steel pipe 3 will tilt towards the baffle 122. The baffle 122 will be squeezed by the weight of the steel pipe 3 to ensure that the baffle 122 and the positioning key 121 remain locked during the hoisting process.

[0038] When using the device:

[0039] First, disconnect the baffle 122 from the placement part 12. Then, the worker hoists the frame 1 to a suitable height for operation. Next, place the bottom end of the steel pipe 3 into one of the limiting parts 17. Using the end of the steel pipe 3 that contacts the limiting part 17 as a reference, rotate it towards the corresponding placement part 12. After the steel pipe 3 smoothly enters the placement part 12, insert the baffle 122 into the placement part 12 and move it away from the center of the frame 1 to close the opening of the placement part 12. Simultaneously, tilt the steel pipe 3 towards the baffle 122 and press it firmly against the baffle 122 to prevent the steel pipe 3 from rotating and falling off the frame 1. Repeat the above steps to place multiple steel pipes 3 into the corresponding placement parts 12 in sequence. The frame 1 is completely lifted using a hoisting device. During the hoisting process, after the receiving plate 16 separates from the ground, it moves away from the frame 1 due to its own weight and the weight of the steel pipe 3. The distance between the frame 1 and the receiving plate 16 increases, and the telescopic arm gradually lengthens. The frame 1 and the receiving plate 16 respectively constrain both ends of the steel pipe 3, reducing the probability of the steel pipe 3 spinning during hoisting. Once the device is transported to the designated location, the workers can then remove the steel pipe 3 by directional manipulation.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A steel pipe hoisting device for reducing spin, comprising a frame (1) having a hook (11) provided on the frame (1) for connection with the hoisting device, characterized in that: The frame (1) is provided with one or more placement parts (12) for accommodating steel pipes (3) in the circumferential direction, and the placement parts (12) are connected to a constraint component for limiting the spin of the steel pipes (3).

2. A spun-reducing pipe hoisting device according to claim 1, characterized in that: The constraint assembly includes a rope (2), and the rope (2) is movably connected to the placement part (12). The two ends of the placement part (12) are symmetrically provided with positioning holes (13). The two ends of the rope (2) pass through the positioning holes (13) and are fixed. The bottom of the rope (2) is U-shaped.

3. The spun-reducing pipe hoisting device according to claim 2, characterized in that: A fixing part (21) is provided on the U-shaped rope (2) to support the bottom of the steel pipe (3).

4. A device for reducing spin of a steel pipe during hoisting as claimed in claim 1, wherein: The constraint assembly includes a telescopic arm and a receiving plate (16). The telescopic arm includes an outer sleeve (14) and an inner sleeve (15) that are nested and slidably arranged. One end of the outer sleeve (14) is fixed to the frame (1), and the inner sleeve (15) is slidably connected to the other end of the outer sleeve (14). The other end of the inner sleeve (15) is slidably connected to the outer sleeve (14), and the other end of the inner sleeve (15) is fixed to the receiving plate (16).

5. A spun-reducing pipe hoisting device according to claim 4, characterized in that: The placement part (12) has an opening at one end away from the center of the frame (1).

6. A steel pipe hoisting device for reducing spin according to claim 5, characterized in that: Positioning keys (121) are symmetrically arranged on both sides of the opening. A baffle (122) is connected to the positioning key (121). The baffle (122) and the positioning key (121) are detachably connected.

7. A spun-reducing pipe hoisting device according to claim 6, characterized in that: The receiving plate (16) is provided with one or more limiting parts (17).

8. A spun-reducing pipe hoisting device according to claim 7, characterized in that: The center distance between the limiting part (17) and the frame (1) is less than the center distance between the placement part (12) and the frame (1).

9. A spun-reducing pipe hoisting device according to claim 7, characterized in that: The number of limiting parts (17) is the same as the number of placement parts (12), and their positions correspond one-to-one.

10. A device for reducing spin of a steel pipe during hoisting according to any one of claims 1 to 9, characterized in that: The centerline of the hook (11) is collinear with the centerline of the frame (1).

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