A bellows hoisting tool

Abstract

This utility model relates to the field of bellows hoisting technology, specifically a bellows hoisting tool, including a cross-shaped support plate with ear plates at the upper end and hoisting holes on the ear plates. It also includes movable plates slidably disposed on the four sides of the support plate and a limiting mechanism disposed on the support plate. The movable plates have hook holes for a hand-operated hoist. The limiting mechanism works in conjunction with the four movable plates to fix the positions of the four movable plates relative to the support plate. The hoisting tool is equipped with movable plates that can slide along the four sides of the support plate. Combined with the limiting mechanism, the spacing between the four movable plates can be adjusted according to the actual length and width dimensions of the bellows. By rotating a screw, the movable base moves up and down, and the guiding effect of the inclined surface pushes the movable plates to slide outwards or inwards. Alternatively, by aligning and fixing the second positioning holes at different positions on the movable plates with the first positioning holes on the support plate, stable clamping of bellows of different specifications can be achieved, significantly improving the versatility and adaptability of the hoisting tool.

Description

Technical Field

[0001] This utility model relates to the field of bellows hoisting technology, specifically to a bellows hoisting tool. Background Technology

[0002] During bellows hoisting operations, traditional lifting tools typically have a fixed structure, making it difficult to flexibly adjust to bellows of different sizes and specifications. When dealing with bellows of varying lengths and widths, the poor adaptability of the lifting tools can easily lead to uneven stress during hoisting, potentially causing the bellows to sway or even detach. While some lifting tools have simple limiting structures, they often rely on single bolt fixings or slot-based limiting methods. In practice, this approach is not only cumbersome and time-consuming to adjust, but also fails to effectively guarantee the stability and reliability of the limiting mechanism under complex working conditions. Utility Model Content

[0003] The purpose of this utility model is to provide a bellows lifting tool to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a bellows hoisting device, comprising a cross-shaped support plate, an ear plate at the upper end of the support plate, a hoisting hole on the ear plate, and movable plates slidably disposed on the four sides of the support plate, and a limiting mechanism disposed on the support plate; the movable plates are provided with hand-operated hoist hanging holes, and the limiting mechanism is used in conjunction with the four movable plates to fix the position of the four movable plates and the support plate.

[0005] Furthermore, the support plate is provided with an annular reinforcing plate, and the reinforcing plate is provided with a plurality of spare holes at equal intervals along the circumference of the reinforcing plate.

[0006] Furthermore, the limiting mechanism includes a rotating seat located at the center of the bottom end of the support plate, a screw rod rotatably connected to the rotating seat, and a cross-shaped movable seat slidably connected to the support plate vertically; the sides of the four movable plates that are close to each other are all inclined surfaces with the four sides of the movable seat, and the inclined surfaces on the movable seat are slidably connected to the inclined surfaces on the four movable plates respectively, and the screw rod is threadedly connected to the movable seat.

[0007] Furthermore, the rotating seat is threadedly connected to a set screw.

[0008] Furthermore, the limiting mechanism includes a first positioning hole on the four sides of the support plate, a plurality of second positioning holes equidistantly arranged along the length of the moving plate and adapted to the first positioning hole; and bolts on the first positioning holes.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] The lifting device is equipped with movable plates that can slide along the four sides of the support plate. With the help of a limiting mechanism (screw-slope surface structure or positioning hole-bolt structure), the spacing between the four movable plates can be flexibly adjusted according to the actual length and width of the bellows.

[0011] When it is necessary to hoist bellows of different sizes, the moving base is moved up and down by rotating the screw, and the moving plate is pushed outward or inward by the guiding effect of the inclined surface (Example 1). Alternatively, the second positioning holes at different positions on the moving plate are aligned with the first positioning holes on the support plate and fixed by bolts and nuts (Example 2); thus, stable clamping of bellows of different specifications is achieved, greatly improving the versatility and adaptability of the hoisting tool. Attached Figure Description

[0012] Figure 1 This is a first overall structural diagram of the present utility model;

[0013] Figure 2 This is a bottom view of the first overall structure of this utility model;

[0014] Figure 3 This is a cross-sectional view of the first overall structure of this utility model;

[0015] Figure 4 This is a diagram of the internal structure of the first integral part of this utility model;

[0016] Figure 5 This is the second overall structural diagram of the present utility model.

[0017] In the picture:

[0018] 1. Support plate; 2. Ear plate; 3. Lifting hole; 4. Moving plate; 5. Hand chain hoist hanging hole; 6. Rotating seat; 7. Screw; 8. Moving seat; 9. Set screw; 10. First positioning hole; 11. Second positioning hole; 12. Bolt; 13. Reinforcing plate; 14. Spare hole. Detailed Implementation

[0019] This utility model discloses a bellows hoisting device, comprising a support plate 1, ear plates 2, movable plates 4, a limiting mechanism, and a reinforcing plate 13. The support plate 1 is welded from two mutually perpendicular steel plates, forming a cross shape with four mutually perpendicular sides. Four ear plates 2 are welded to the upper ends of the four sides of the support plate 1, and each ear plate 2 has a hoisting hole 3 for connecting to a crane hook via a wire rope. Four movable plates 4 are also provided, made of steel plate; each of the four sides of the support plate 1 has a guide groove, which is interconnected and also forms a cross shape. One end of each of the four movable plates 4 is located within one of the four guide grooves and can slide within them. The other end of each of the four movable plates 4 has a hanging hole 5 for connecting a chain hoist. The limiting mechanism is located on the support plate 1 and works in conjunction with the four movable plates 4 to fix the position of the four movable plates 4 relative to the support plate 1. The reinforcing plate 13 is a ring-shaped steel plate that is welded to the support plate 1. Multiple spare holes 14 are provided at equal intervals along the circumference of the reinforcing plate 13. When the hoisting of the bellows is unstable through the four hand-operated hoist hanging holes 5, a chain hoist can be added through the spare holes 14 to improve the stability of the hoisting bellows.

[0020] Example 1

[0021] according to Figures 1 to 4 As shown, the limiting mechanism of this utility model includes a rotating seat 6, a screw 7, and a movable seat 8. The rotating seat 6 is located at the bottom center of the support plate 1. One end of the screw 7 is rotatably connected to the rotating seat 6 via a bearing, and the other end is located inside the support plate 1 and rotatably connected to the upper surface of the support plate 1 via a bearing. A rotating handle is provided on one end of the screw 7. The movable seat 8 is generally cross-shaped, adapted to the guide groove, and threadedly connected to the screw 7 and the movable seat 8. When the rotating handle is rotated, the movable seat 8 can slide vertically within the support plate 1. The sides of the four movable plates 4 that are close to each other and the four ends of the movable seat 8 are all sloped surfaces. T-shaped grooves are provided on the slopes of the sides of the four movable plates 4 that are close to each other. T-shaped sliders are provided on the four slopes of the movable seat 8. The sliders are located in the grooves and can slide in the grooves. When the movable seat 8 moves vertically, the four movable plates 4 move closer to each other or further apart. A set screw 9 is threadedly connected to the rotating seat 6. By tightening the set screw 9, the rotation of the screw 7 is restricted.

[0022] Example 2

[0023] according to Figure 5As shown, the limiting mechanism of this utility model includes a first positioning hole 10 and a second positioning hole 11. The first positioning holes 10 are formed on the four sides of the support plate 1, and a set (two) are provided along its vertical direction. The second positioning holes 11 are formed on the movable plate 4, and a set (two) are also provided along its vertical direction, which are adapted to the first positioning holes 10. Multiple sets of second positioning holes 11 are equidistantly arranged along the length of the movable plate 4. When the four movable plates 4 move to the appropriate position, bolts 12 are screwed into the corresponding first positioning holes 10 and second positioning holes 11, and then nuts are used to fix the position of the four movable plates 4 on the support plate 1.

[0024] Working principle of this utility model:

[0025] I. Overview of Overall Structure and Functions

[0026] This utility model achieves stable hoisting of bellows of different sizes through the cooperation of a cross-shaped support plate 1, a sliding movable plate 4, and a limiting mechanism. The ear plate 2 and hoisting hole 3 at the upper end of the support plate 1 are used to connect a crane, the hand-operated hoist hanging hole 5 on the movable plate 4 is used to fix the bellows, and the limiting mechanism adapts to the size of the bellows by adjusting the spacing of the movable plates 4, thereby enhancing the hoisting stability.

[0027] II. Working Process and Principle

[0028] (I) Adjustment principle based on screw-slope structure (Example 1, Figures 1-4)

[0029] Structural components (see Figures 3-4)

[0030] The rotating seat 6 is fixed to the middle of the bottom end of the support plate 1. The screw 7 is rotatably connected to the rotating seat 6. The cross-shaped moving seat 8 is threadedly engaged with the screw 7 and is slidably connected to the moving plate 4 through the inclined surface.

[0031] The inner side of the movable plate 4 and the side of the movable seat 8 are both sloping surfaces. A T-shaped guide groove is opened on the movable plate 4, and a T-shaped slider is provided on the sloping surface of the movable seat 8 to realize sliding linkage.

[0032] Regulation process

[0033] Increase the spacing: Rotate screw 7 clockwise (operated by turning the handle), screw 7 drives the movable seat 8 to move vertically upward along the support plate 1. At this time, the inclined surface of the movable seat 8 pushes the movable plate 4 to slide outward along the guide groove of the support plate 1, thereby increasing the spacing between the four movable plates 4 to accommodate a larger size bellows (see Figure 4).

[0034] Reduce the spacing: Rotate screw 7 counterclockwise, move seat 8 downward, and move plate 4 slides inward under the guidance of the slope surface, thus reducing the spacing. (Alternatively, by installing reset springs at one end of the four moving plates 4 and the four side faces of the support plate 1, the spacing of the moving plates 4 can be reduced through the compression and extension of the springs, as shown in the figure.) This method is suitable for smaller bellows.

[0035] Fixed position: After adjusting to the appropriate spacing, tighten the set screw 9 on the rotating seat 6. The friction between the set screw 9 and the screw 7 restricts the rotation of the screw 7, thus locking the spacing of the moving plate 4 (Figure 3).

[0036] Stability principle

[0037] After the spacing of the movable plate 4 matches the bellows, the chain hoist connects to the bellows through the hanging hole 5. When the crane lifts the lifting device through the lifting hole 3, the movable plate 4 contacts the side of the bellows, forming multi-point support and dispersing the lifting force (see Figure 1).

[0038] (II) Adjustment principle based on positioning hole-bolt structure (Example 2, Figure 5)

[0039] Structural composition (see attached figure 5)

[0040] The support plate 1 has first positioning holes 10 on its four sides (two in a group in the vertical direction), and multiple groups of second positioning holes 11 (two in each group) are distributed equidistantly along the length of the moving plate 4, which are fixed to the nuts by bolts 12.

[0041] Regulation process

[0042] Slide the movable plate 4 along the guide groove of the support plate 1 so that a set of second positioning holes 11 on the movable plate 4 are aligned with the first positioning holes 10 of the support plate 1.

[0043] Pass the bolt 12 through the aligned positioning hole and tighten it with the nut to fix the position of the moving plate 4. Multiple sets of second positioning holes 11 can be adapted to different bellows sizes (see Figure 5).

[0044] Stability principle

[0045] After bolt 12 is fixed, the movable plate 4 is rigidly locked. When the chain hoist connects the bellows, the movable plate 4 supports the side of the bellows to ensure that the hoisting force is even (see Figure 5).

[0046] (III) The role of auxiliary structures (see Figures 1-2)

[0047] Annular reinforcing plate 13 and spare hole 14 (Figure 2)

[0048] The reinforcing plate 13 is welded to the support plate 1 to enhance the structural strength and prevent deformation during hoisting; the spare hole 14 can be used for additional fasteners (such as ropes) to adapt to special hoisting requirements.

[0049] Matching of chain hoist and lifting hole 3

[0050] The lifting hole 3 is connected to the crane hook via a wire rope, and the hand chain hoist hanging hole 5 is connected to the chain hoist. The other end of the chain hoist is fixed to the bellows, and the bellows and lifting device are tightened by tension (see attached figure 1).

[0051] III. The core logic of adapting to different bellows

[0052] Dynamically adjust the spacing: Driven by the screw 7 in Embodiment 1 or selected by the first positioning hole 10 and the second positioning hole 11 in Embodiment 2, the spacing of the moving plate 4 is matched with the length and width of the bellows, ensuring that the moving plate 4 is in close contact with the side of the bellows (Figures 1 and 5).

[0053] Multi-point force balance: Four movable plates 4 contact the sides of the bellows, distributing the hoisting force to multiple contact points. They are rigidly fixed by a limiting mechanism (set screw 9 or bolt 12), reducing bellows sway and achieving stable hoisting.

Claims

1. A bellows hoisting device, comprising a cross-shaped support plate (1), wherein the upper end of the support plate (1) is provided with an ear plate (2), and the ear plate (2) is provided with a hoisting hole (3), characterized in that, It also includes movable plates (4) that slide on the four sides of the support plate (1) and limiting mechanisms on the support plate (1); the movable plates (4) are provided with hand-operated hoist hanging holes (5), and the limiting mechanisms are used in conjunction with the four movable plates (4) to fix the position between the four movable plates (4) and the support plate (1).

2. The lifting and hoisting tool as described in claim 1, characterized in that, The support plate (1) is provided with an annular reinforcing plate (13), and the reinforcing plate (13) is provided with a plurality of spare holes (14) at equal intervals along the circumference of the reinforcing plate (13).

3. The lifting and hoisting tool as described in claim 2, characterized in that, The limiting mechanism includes a rotating seat (6) located at the bottom center of the support plate (1), a screw (7) rotatably connected to the rotating seat (6), and a cross-shaped movable seat (8) slidably connected to the support plate (1); the four movable plates (4) are close to each other on one side and the four sides of the movable seat (8) are all inclined surfaces, and the inclined surfaces on the movable seat (8) are slidably connected to the inclined surfaces on the four movable plates (4) respectively, and the screw (7) is threadedly connected to the movable seat (8).

4. The lifting and hoisting tool as described in claim 3, characterized in that, The rotating seat (6) is threadedly connected to the set screw (9).

5. The lifting and hoisting tool as described in claim 2, characterized in that, The limiting mechanism includes a first positioning hole (10) on the four sides of the support plate (1), and a plurality of second positioning holes (11) arranged at equal intervals along the length of the moving plate (4) and adapted to the first positioning hole (10); and a bolt (12) on the first positioning hole (10).

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