Hoisting tool
By combining a diamond-shaped telescopic frame with internal and external clamping structures, the adaptability and stability issues of cylindrical workpiece hoisting tools are solved, enabling rapid adjustment and stable hoisting, reducing costs and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-24
AI Technical Summary
Existing cylindrical workpiece hoisting tools have a simple clamping structure, poor adaptability, insufficient stability, and a narrow range of applications, resulting in low work efficiency, poor safety, and high equipment procurement costs.
The device employs a diamond-shaped telescopic frame structure, combined with internal and external clamping methods. The expansion and contraction of the diamond-shaped telescopic frame enables rapid adaptation to cylindrical workpieces of different diameters, while the limiting mechanism and detachable clamping plates and moving blocks ensure stable clamping.
It enables rapid adjustment and stable hoisting of cylindrical workpieces of different diameters, improving work efficiency, reducing equipment procurement costs, and enhancing hoisting safety.
Smart Images
Figure CN224030489U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of equipment maintenance, specifically is a hoisting tool. BACKGROUND
[0002] In the field of equipment maintenance, for the hoisting operation of cylindrical workpieces (such as pipes, containers, etc.), the traditional hoisting tool exposes many defects:
[0003] 1. Single clamping structure and poor adaptability: Most of the existing devices for clamping the inner wall of the cylindrical workpiece are fixed structures, which are difficult to flexibly adapt to workpieces of different diameters. In actual operation, when facing cylindrical workpieces of different specifications, the operator needs to spend a lot of time on tedious adjustment or replacement of parts, which seriously affects work efficiency. For example, when hoisting and repairing pipes of various diameters, the traditional tool cannot quickly adapt to changes in pipe diameter, resulting in slow work progress.
[0004] 2. Insufficient stability: When relying solely on outer wall clamping, the workpiece is prone to shaking during hoisting due to uneven stress. Especially in complex operating conditions, such as strong wind and equipment vibration, the workpiece has a high risk of falling. Even if some tools use an inner and outer clamping structure, the linkage between the clamping components is poor, and the resulting force cannot form an effective force, resulting in insufficient clamping force and difficulty in ensuring the stability of the workpiece during hoisting.
[0005] 3. Narrow application range: The hoisting tools on the market are mostly special-purpose, with serious lack of detachable and universal design. This means that one tool can only be used for a specific type or size of workpiece, and cannot meet the diverse hoisting needs of workpieces. In the process of equipment maintenance, if multiple workpieces of different shapes and sizes need to be hoisted, multiple different hoisting tools must be provided, which not only increases the cost of equipment procurement, but also occupies a large amount of storage space. SUMMARY
[0006] The utility model aims to provide a hoisting tool to solve the problems mentioned in the background.
[0007] To achieve the above object, the utility model provides the following technical scheme: a hoisting tool, including diamond telescopic frame, the diamond telescopic frame is composed of first connecting rod, second connecting rod, third connecting rod and fourth connecting rod, one end of first connecting rod is hinged with one end of second connecting rod, the other end of first connecting rod and second connecting rod is hinged with one end of third connecting rod and fourth connecting rod respectively, the middle part of third connecting rod and fourth connecting rod is hinged with each other, the other end of third connecting rod and fourth connecting rod is hinged with crosspiece and transom respectively, the notched opening is set up on crosspiece and transom, the notched opening on crosspiece and transom is slidably connected with the other end of fourth connecting rod, the notched opening on transom is slidably connected with the other end of third connecting rod, the transom is in crosspiece, and the movable block is detachably connected to the bottom of crosspiece and transom.
[0008] Further, the other end of first connecting rod and second connecting rod is equipped with the connecting plate.
[0009] Further, the clamping plate is detachably connected to the connecting plate.
[0010] Further, it further includes the limiting mechanism, the limiting mechanism is composed of the limiting cylinder that is arranged on the second connecting rod, the limiting rod that is rotatably connected in the limiting cylinder, the both ends of limiting rod extend to the outside of limiting cylinder, the one end of limiting rod is connected with the rotating block, and the other end of limiting rod is connected with the fender.
[0011] Compared with the prior art, the utility model has the advantages of the following:
[0012] 1. The hoisting tool of the utility model includes the diamond telescopic frame composed of first connecting rod, second connecting rod, third connecting rod and fourth connecting rod. When pulling the hinged place of first connecting rod and second connecting rod, the diamond telescopic frame is unfolded, and the other end of third connecting rod and fourth connecting rod drives the movable block on crosspiece and transom to move away from each other or close to each other. Since the notched opening on crosspiece and transom is slidably connected with the other end of fourth connecting rod and third connecting rod respectively, this structure makes the movable block be able to accurately adapt to the inner wall of the cylindrical workpiece of different diameters. The operator can quickly complete the clamping adjustment of the cylindrical workpiece of different diameters without complex disassembly operation, which greatly improves the work efficiency.
[0013] 2. The movable block of crosspiece and transom bottom is detachably connected by bolt, and can clamp the inner wall of workpiece when the diamond telescopic frame is unfolded. Meanwhile, the clamping plate on the other end of first connecting rod and second connecting rod is detachably connected by bolt, and the clamping plate can clamp the outer wall of workpiece. This double clamping mode of inside and outside cooperation can form stable clamping force, effectively avoid the shaking or falling of workpiece during hoisting, and improve the safety of hoisting operation.
[0014] 3. The moving block is connected with the cross frame and the cross plate through bolts, and the clamping plate and the connecting plate are also connected through bolts in a detachable structure. Therefore, the operator can conveniently replace the corresponding clamping components according to the shape, size and material of different workpieces. For example, for cylindrical workpieces with different wall thicknesses or materials, the moving block and the clamping plate with different sizes or materials can be replaced, so that the hoisting requirements of various workpieces are met, and the equipment maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a whole structure diagram of the utility model;
[0016] Figure 2 It is a partial structure diagram of the utility model;
[0017] Figure 3 It is a sectional view of the utility model;
[0018] Figure 4 It is an upper structure diagram of the utility model;
[0019] Figure 5 It is a lower structure diagram of the utility model.
[0020] In the drawing:
[0021] 1, first connecting rod; 2, second connecting rod; 3, third connecting rod; 4, fourth connecting rod; 5, cross frame; 6, cross plate; 7, moving block; 8, connecting plate; 9, clamping plate; 10, limiting cylinder; 11, limiting rod; 12, rotating block; 13, stop block. DETAILED DESCRIPTION
[0022] Please refer to Figures 1 to 5 A hoisting tool is composed of a diamond-shaped telescopic frame located at the top, a clamping device located at the bottom and connected with the diamond-shaped telescopic frame, and a limiting mechanism arranged on the diamond-shaped telescopic frame. The upper end of the diamond-shaped telescopic frame is connected with a traction device such as a crane or a headstock through a steel wire rope. When the traction device pulls the diamond-shaped telescopic frame, the clamping device is driven to fix the workpiece, so as to achieve the effect of hoisting the workpiece. The limiting mechanism is used to fix the diamond-shaped telescopic frame when the workpiece is not hoisted.
[0023] Specifically,
[0024] The diamond-shaped telescopic frame is composed of a first connecting rod 1, a second connecting rod 2, a third connecting rod 3 and a fourth connecting rod 4. One end of the first connecting rod 1 is hinged to one end of the second connecting rod 2. The other ends of the first connecting rod 1 and the second connecting rod 2 are respectively hinged to one end of the third connecting rod 3 and one end of the fourth connecting rod 4. The middle parts of the third connecting rod 3 and the fourth connecting rod 4 are hinged to each other.
[0025] The limiting mechanism is composed of a limiting cylinder 10 arranged on the second connecting rod 2, a limiting rod 11 rotatably connected in the limiting cylinder 10 through a bearing, and both ends of the limiting rod 11 extend to the outside of the limiting cylinder 10. A rotating block 12 is connected on one end of the limiting rod 11, and a stop block 13 is connected on the other end of the limiting rod 11. When the rotating block 12 is rotated, the limiting rod 11 is rotated, thereby driving the stop block 13 to rotate, so that the stop block 13 can be clamped in the limiting slot arranged on the third connecting rod 3.
[0026] As shown in Figure 3 The other end of the third connecting rod 3 and the fourth connecting rod 4 is respectively hinged with a cross frame 5 and a cross plate 6. The cross frame 5 and the cross plate 6 are both provided with a slot, the slot on the cross frame 5 and the cross plate 6 is in sliding fit with the other end of the fourth connecting rod 4, the slot on the cross plate 6 is in sliding fit with the other end of the third connecting rod 3, the cross plate 6 is located in the cross frame 5, and the cross frame 5 and the cross plate 6 are both detachably connected with a moving block 7 at the bottom through bolts. When the hinged part of the first connecting rod 1 and the second connecting rod 2 is pulled, the other end of the third connecting rod 3 and the fourth connecting rod 4 are close to each other, thereby driving the moving blocks 7 connected on the cross frame 5 and the cross plate 6 to be far away from each other, so as to be clamped on the inner wall of the cylindrical workpiece, thereby fixing the cylindrical workpiece, so as to drive the cylindrical workpiece to move by the traction equipment.
[0027] As shown in Figure 1 The other end of the first connecting rod 1 and the second connecting rod 2 is provided with a connecting plate 8. The clamping plates 9 are detachably connected on the connecting plate 8 through bolts. When the hinged part of the first connecting rod 1 and the second connecting rod 2 is pulled, the two clamping plates 9 are close to each other, so as to assist in clamping the workpiece, and the workpiece is hoisted in cooperation with the moving blocks 7, thereby increasing the stability during hoisting.
[0028] The working process and principle of the utility model are as follows:
[0029] 1. Equipment connection and initial state: when in use, the upper end of the rhombic telescopic frame is connected with traction equipment such as a crane, a crown block and the like through a steel wire rope. At this time, the cross plate 6 is located in the cross frame 5, the moving blocks 7 are connected with the cross frame 5 and the cross plate 6 at the bottom through bolts, and the clamping plates 9 are installed on the connecting plates 8 through bolts. In the initial state, the rhombic telescopic frame is in a contracted state, and the spacing between the moving blocks 7 and the spacing between the clamping plates 9 are small.
[0030] 2. Workpiece clamping adjustment: When the traction device pulls the hinge joint of the first link 1 and the second link 2 upwards, the diamond-shaped telescopic frame begins to expand. In this process, the hinge points in the middle of the third link 3 and the fourth link 4 are forced to move their two ends in opposite directions. Specifically, the crossbar 5 hinged to the other end of the third link 3 and the horizontal plate 6 hinged to the other end of the fourth link 4, through the sliding fit of the respective notches with the links, drive the moving blocks 7 away from each other. The moving blocks 7 gradually approach the inner wall of the cylindrical workpiece and are clamped, achieving the fixation of the inner wall of the workpiece. At the same time, the connecting plates 8 at the other ends of the first link 1 and the second link 2 approach each other as the telescopic frame expands, and then the clamping plates 9 clamp the outer wall of the workpiece, forming double clamping of the inner and outer walls, ensuring the stability of the workpiece during hoisting.
[0031] 3. Hoisting and limiting: After the workpiece is stably clamped by the moving blocks 7 and the clamping plates 9, the traction device lifts the entire device through the steel wire rope and starts the hoisting operation. During hoisting, the moving blocks 7 and the clamping plates 9 work together to ensure that the workpiece is always in a stable state. After the maintenance is completed and the hoisting operation is finished, the traction device is loosened and the diamond-shaped telescopic frame naturally droops. At this time, the rotating block 12 on the limiting rod 11 is rotated, the stop block 13 is rotated by the limiting rod 11, and the stop block 13 is clamped into the limiting slot of the third link 3, so as to lock the position of the telescopic frame and avoid accidental movement of the diamond-shaped telescopic frame in the non-working state.
[0032] 4. Disassembly and replacement: When different workpieces need to be adapted, the operator only needs to disassemble the bolts connecting the moving blocks 7 with the crossbar 5 and the horizontal plate 6, and the bolts connecting the clamping plates 9 with the connecting plates 8, so as to conveniently replace the moving blocks 7 or the clamping plates 9 to meet the diversified hoisting needs.
Claims
1. A hoisting tool comprising a diamond-shaped telescopic frame, which is composed of a first link (1), a second link (2), a third link (3) and a fourth link (4), one end of the first link (1) is hinged to one end of the second link (2), the other ends of the first link (1) and the second link (2) are respectively hinged to one end of the third link (3) and one end of the fourth link (4), the middle parts of the third link (3) and the fourth link (4) are hinged to each other, characterized in that, The other end of the third connecting rod (3) and the fourth connecting rod (4) is respectively hinged with a cross frame (5) and a cross plate (6), and notches are formed on the cross frame (5) and the cross plate (6), the notches on the cross frame (5) and the cross plate (6) are in sliding fit with the other end of the fourth connecting rod (4), the notch on the cross plate (6) is in sliding fit with the other end of the third connecting rod (3), the cross plate (6) is located in the cross frame (5), and the bottom of the cross frame (5) and the cross plate (6) is detachably connected with a moving block (7).
2. The hoisting tool of claim 1, wherein, The other end of the first connecting rod (1) and the second connecting rod (2) is provided with a connecting plate (8).
3. The hoisting tool of claim 2, wherein, The connecting plate (8) is detachably connected with a clamping plate (9).
4. The hoisting tool of claim 1, wherein, Further comprising a limiting mechanism, the limiting mechanism is composed of a limiting cylinder (10) arranged on the second connecting rod (2) and a limiting rod (11) rotatably connected in the limiting cylinder (10), both ends of the limiting rod (11) extend to the outside of the limiting cylinder (10), one end of the limiting rod (11) is connected with a rotating block (12), and the other end of the limiting rod (11) is connected with a stop block (13).