Safety lifeline system for crane overhaul

Abstract

The utility model relates to a crane overhaul safety lifeline system in the technical field of crane overhaul, which comprises a stand column, a horizontal plate, a steel wire rope and a safety shackle, one end of the horizontal plate is fixed on the stand column, the steel wire rope is lapped and fixed at the other end of the horizontal plate, and a ring body on one side of the head of the safety shackle has a diameter smaller than that of the steel wire rope. A gap greater than the thickness of the horizontal plate; the central ring body of the head of the safety shackle protrudes to form a plane step, limiting plates with inverted-trapezoid-shaped cross sections are erected above the horizontal plate side by side at intervals, the steel wire rope is fixedly provided with an isosceles trapezoid plate with the plate face in the steel wire rope direction, and the lower end of the inclined waist of the isosceles trapezoid plate is in smooth transition with the steel wire rope. A gap between the upper bottom surface of the isosceles trapezoid plate and the corresponding trapezoid bottom surface of the limiting plate is matched with the narrowest part of the central ring body of the head of the safety shackle, so that the horizontal plate can correspondingly penetrate through the gap of the safety shackle; the crane overhaul safety lifeline system can continuously slide the safety shackle more efficiently, and overhaul convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of crane maintenance technology, and in particular to a crane maintenance safety lifeline system. Background Art

[0002] As is well known, during crane maintenance, workers need to climb onto the crane for fixed-point and walking operations. Fall protection measures must be installed on the maintenance platform and walkways to effectively reduce the risk of falls. Installing a fall protection system provides continuous anchor points for workers, ensuring continuous protection throughout the maintenance process. Traditional crane safety measures involve attaching safety belts to railings. However, when workers are walking, the safety belt buckles cannot pass through the uprights on the railings, requiring repeated unfastening and refastening of the safety belts, which is both inconvenient and poses a safety risk.

[0003] Currently, on some famous mountains and historical sites, each tourist is connected to the suspension cable with a safety belt to ensure their safety. The safety hook of the safety belt is intermittent. When sliding along the suspension cable, it can pass the mounting plate at the fixed point of the suspension cable without detaching from it, thus avoiding frequent disassembly of the safety hook and ensuring the safety of continuous connection. However, the drawback of this existing technology is that since the intermittent safety hook and the mounting plate fixing the suspension cable cannot be actively aligned, manual alignment is still required, which is inconvenient. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art and solve the existing technical problems, this utility model discloses a crane maintenance safety lifeline system, which can more efficiently and continuously slide the safety hook, improving maintenance convenience.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A crane maintenance safety lifeline system includes a column, a horizontal plate, and a wire rope, as well as a safety hook loop that is fitted around the wire rope and connected to a safety belt at its tail. One end of the horizontal plate is fixed to the column, and the wire rope is overlapped and fixed to the upper surface of the other end of the horizontal plate. The head of the safety hook loop has a discontinuity on one side that is smaller than the diameter of the wire rope and larger than the thickness of the horizontal plate. The central part of the head of the safety hook loop extends outward to form a planar step. Limiting plates with inverted trapezoidal cross-sections are spaced and arranged side by side above the horizontal plate. An isosceles trapezoidal plate with its surface along the direction of the wire rope is fixed to the upper part of the corresponding rope segment that overlaps the horizontal plate. The lower end of the isosceles trapezoidal plate smoothly transitions to the wire rope. The gap between the upper base of the isosceles trapezoidal plate and the corresponding trapezoidal base of the limiting plate is adapted to the narrowest part of the central part of the head of the safety hook loop, so that the horizontal plate can pass through the discontinuity of the safety hook loop.

[0007] Furthermore, the wire rope is fixed to the horizontal plate by U-bolts.

[0008] Furthermore, the limiting plate is fixed to the side wall at the top of the column.

[0009] Furthermore, the horizontal plate is aligned with the center of the limiting plate and the isosceles trapezoidal plate, and the width of the horizontal plate is less than the minimum trapezoidal base length of the limiting plate and the isosceles trapezoidal plate.

[0010] Furthermore, the safety hook is designed as a long strip-shaped ring.

[0011] Furthermore, both the limiting plate and the isosceles trapezoidal plate are made of wear-resistant PTFE material.

[0012] By adopting the technical solution described above, this utility model has the following beneficial effects:

[0013] The crane maintenance safety lifeline system disclosed in this utility model allows the safety hook to automatically align with the horizontal plate when personnel pull it along the wire rope during maintenance. This is achieved by the vertical limitation of the isosceles trapezoidal plate, the lateral limitation after the combined action of the limiting plate and the planar step, and the rotational limitation. This ensures that the safety hook can pass smoothly, reducing the need for maintenance personnel to manually align it. This not only saves time but also increases the convenience and continuity of the maintenance process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0015] Figure 2 yes Figure 1 Right view diagram after removing the safety hook.

[0016] In the diagram: 1. Column; 2. Safety belt; 3. Safety hook; 4. Horizontal plate; 5. U-bolt; 6. Wire rope; 7. Isosceles trapezoidal plate; 8. Planar step; 9. Limiting plate. Detailed Implementation

[0017] The technical solution of this utility model will be described below with reference to the accompanying drawings of the embodiments of this utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this utility model for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0018] Combined with attachment Figure 1-2The crane maintenance safety lifeline system includes a column 1, a horizontal plate 4, and a wire rope 6, as well as a safety hook 3 that loops around the wire rope 6 and connects to a safety belt 2 at the tail. The safety hook 3 is typically a long, narrow ring with rounded ends, the radius of the rounded end being larger than the radius of the rounded end. One end of the horizontal plate 4 is fixed to the column 1, and the wire rope 6 is overlapped and fixed to the upper surface of the other end of the horizontal plate 4. Multiple columns 1 are typically installed along the direction of the wire rope 6, and each column 1 corresponds to a fixed horizontal plate 4 for overlapping and installing the wire rope 6. As needed, the wire rope 6 is fixed to the horizontal plate 4 using U-bolts 5, facilitating disassembly and assembly while ensuring stable fixation. The head of the safety hook 3 has a discontinuity on one side that is smaller than the diameter of the wire rope 6 but larger than the thickness of the horizontal plate 4, facilitating passage through the horizontal plate 4 while preventing the wire rope 6 from detaching.

[0019] The head of the safety hook 3 extends outward from the center of the ring to form a flat step 8. Above the horizontal plate 4, there are spaced and parallel limiting plates 9 with an inverted trapezoidal cross-section. Specifically, the limiting plates 9 are fixed to the top side wall of the column 1 to ensure a stable connection. An isosceles trapezoidal plate 7 with its surface along the direction of the wire rope 6 is fixed to the upper part of the corresponding rope segment of the wire rope 6 that overlaps the horizontal plate 4. The lower end of the isosceles trapezoidal plate 7 smoothly transitions to the wire rope 6, allowing the safety hook 3 to naturally transition from the wire rope 6 to the isosceles trapezoidal plate 7 when sliding. The upper base of the isosceles trapezoidal plate 7 and the corresponding trapezoidal base of the limiting plate 9 are connected. The gap between the surfaces, that is, the minimum gap between the isosceles trapezoidal plate 7 and the limiting plate 9, is adapted to the narrowest part of the central ring of the head of the safety hook 3 so that the horizontal plate 4 can pass through the gap of the safety hook 3. As needed, the horizontal plate 4 is aligned with the center of the limiting plate 9 and the isosceles trapezoidal plate 7, and the width of the horizontal plate 4 is less than the minimum trapezoidal base length of the limiting plate 9 and the isosceles trapezoidal plate 7, so as to adjust the posture of the safety hook 3 in advance before the gap of the safety hook 3 passes through the horizontal plate 4. In addition, the limiting plate 9 and the isosceles trapezoidal plate 7 are both made of wear-resistant PTFE material.

[0020] Implementing the crane maintenance safety lifeline system described in this utility model, during the process of personnel pulling the safety hook 3 along the wire rope 6 for maintenance, when it is about to approach the horizontal plate 4, the safety hook 3 can first be lifted by the vertical limit of the isosceles trapezoidal plate 7, so that the plane step 8 of the safety hook 3 is close to the gap between the isosceles trapezoidal plate 7 and the limit plate 9. Then, under the lateral limit and rotation limit after the combined action of the limit plate 9 and the plane step 8, the posture of the safety hook 3 is automatically adjusted to intermittently correspond to the horizontal plate 4. Continuing to pull the safety hook 3 can pass smoothly, saving the time of manual adjustment.

[0021] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A crane maintenance safety lifeline system, comprising a column (1), a horizontal plate (4) and a steel wire rope (6), and a safety hook (3) which is looped around the steel wire rope (6) and connected to a safety belt (2) at its tail end, wherein one end of the horizontal plate (4) is fixed to the column (1), and the steel wire rope (6) is overlapped and fixed to the upper plate surface of the other end of the horizontal plate (4); a ring body on one side of the head of the safety hook (3) has a discontinuity smaller than the diameter of the steel wire rope (6) and larger than the thickness of the horizontal plate (4), and is characterized in that: The central ring body of the head of the safety hook ring (3) extends outward and bulges to form a plane step (8); a limit plate (9) with an inverted trapezoidal cross section is arranged side by side at intervals above the horizontal plate (4); an isosceles trapezoidal plate (7) with a plate surface along the direction of the steel wire rope (6) is fixed to the upper part of the corresponding rope segment of the steel wire rope (6) overlapped on the horizontal plate (4); the lower end of the oblique waist of the isosceles trapezoidal plate (7) smoothly transitions with the steel wire rope (6); the gap between the upper bottom surface of the isosceles trapezoidal plate (7) and the corresponding trapezoidal bottom surface of the limit plate (9) is adapted to the narrowest part of the central ring body of the head of the safety hook ring (3), so that the horizontal plate (4) can correspond to the discontinuity of the safety hook ring (3).

2. The crane maintenance safety lifeline system according to claim 1 is characterized by: The steel wire rope (6) is fixed to the horizontal plate (4) via a U-shaped bolt (5).

3. The crane maintenance safety lifeline system according to claim 1 is characterized by: The limiting plate (9) is fixed to the top side wall of the column (1).

4. The crane maintenance safety lifeline system according to claim 1 is characterized by: The horizontal plate (4) is aligned with the center of the limiting plate (9) and the isosceles trapezoidal plate (7), and the width of the horizontal plate (4) is smaller than the minimum trapezoidal base length of the limiting plate (9) and the isosceles trapezoidal plate (7).

5. The crane maintenance safety lifeline system according to claim 1 is characterized by: The safety hook ring (3) is configured as a long strip ring.

6. The crane maintenance safety lifeline system according to claim 1 is characterized by: The limiting plate (9) and the isosceles trapezoidal plate (7) are both made of wear-resistant polytetrafluoroethylene material.

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