A tool for hoisting and installing a propeller blade

Abstract

This invention proposes a tooling for hoisting and installing propeller blades, comprising several blade kits. Each blade kit includes two parallel and symmetrically arranged triangular plates, the base edges of which are fixedly connected by a square plate. When the blade kits are assembled with the blades, the triangular plates are located on either side of the blades, with the square plate facing the edge of the blades. The apexes of the multiple blade kits can be interconnected at the corresponding apex angles of the triangular plates. A locking assembly is provided between the two triangular plates to adjust the pressure between the square plate and the blade. A lifting lug is provided on the side of the square plate away from the locking assembly. This invention has a simple structure, with blade kits that fit together using bolts and pins, reducing assembly and disassembly steps and making the hoisting process easier. It provides good propeller fixation without damaging the blade surface. It has wide applicability, suitable for blades of different sizes, and is easy to promote.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, specifically relating to a tooling for hoisting and installing propeller blades. Background Technology

[0002] During shipbuilding, propeller blade installation requires lifting the blades to the installation position, then adjusting them to the appropriate position using manual traction or a hoist before installation. Currently, blade lifting typically involves wrapping and securing them with slings. This method is complex, time-consuming, and carries certain safety risks, including the risk of slippage and falling. The wrapping technique usually requires a high level of skill, necessitating around three people and taking about half an hour to complete, with the crane also needed to assist in slow, trial lifting and tightening. Summary of the Invention

[0003] To address the problems existing in the prior art, this application proposes a tooling for hoisting and installing propeller blades, comprising several blade assemblies: each blade assembly includes two parallel and symmetrically arranged triangular plates, the base edges of which are fixedly connected by a square plate; when the blade assembly is fitted with the blade, the triangular plates are located on both sides of the blade, and the square plate is directly opposite the edge of the blade; multiple blade assemblies can be interconnected at the apex corners of the triangular plates;

[0004] A locking assembly is provided between the two triangular plates, and the locking assembly is used to adjust the pressure between the square plate and the blade;

[0005] The square plate has a lifting lug on the side away from the locking assembly.

[0006] Furthermore, the triangular plate is an isosceles triangle, and a through hole is provided near the apex of the triangular plate.

[0007] Furthermore, the locking assembly includes an adjustable pressure plate arranged parallel to the square plate. The square plate has bolt holes, and an adjusting bolt passes through the bolt holes. The bottom end of the adjusting bolt abuts against the top surface of the adjustable pressure plate.

[0008] Furthermore, the square plate is provided with an anti-detachment hole, and the top surface of the adjustable pressure plate is provided with an anti-detachment rod that cooperates with the anti-detachment hole and extends through the anti-detachment hole; the top end of the anti-detachment rod is provided with a cover plate, the size of which is larger than the diameter of the anti-detachment hole.

[0009] Furthermore, the inner wall of the triangular plate and the bottom surface of the adjustable pressure plate are both provided with inner rubber lining.

[0010] Furthermore, the blade assembly is made of steel plate with a thickness of 4mm:

[0011] The base of the triangular plate is 400mm, the waist of the triangular plate is 1000mm, the thickness of the inner lining rubber on the inner wall of the triangular plate is 10mm, and the diameter of the through hole on the triangular plate is 20mm.

[0012] The square steel plate has a side length of 400mm, and the diameter of the bolt hole and the anti-loosening hole is 22mm. An M20 nut is welded to the top surface of the square steel plate at the position corresponding to the bolt hole. The adjusting bolt is an M20 butterfly bolt with a length of 200mm.

[0013] Furthermore, the lifting lug is made of a steel column with a diameter of 20mm and is a semi-circular shape with a diameter of 200mm. The two ends of the lifting lug are directly fixed to the square plate.

[0014] Furthermore, the adjustable pressure plate is made of steel plate with a thickness of 4mm:

[0015] The adjustable pressure plate has a side length of 360mm and the inner rubber lining of the adjustable pressure plate floor has a thickness of 40mm.

[0016] The anti-detachment rod is a steel round tube with an outer diameter of 20mm and an inner diameter of 16mm, and the length of the anti-detachment rod is 200mm; the cover plate is a round steel sheet with a diameter of 30mm and a thickness of 5mm.

[0017] The tooling for hoisting and installing propeller blades proposed in this invention has the following advantages compared with the prior art:

[0018] This invention features a simple structure, with blade kits that fit together and are connected by bolts and pins, resulting in fewer assembly and disassembly steps and easier hoisting. It provides excellent propeller fixation without damaging the blade surface and has wide applicability, suitable for blades of different sizes, making it easy to promote. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the propeller assembly of the present invention.

[0020] Figure 2 This is a schematic diagram of the lifting lug of the present invention.

[0021] Figure 3 This is a schematic diagram of the adjustable pressure plate of the present invention;

[0022] Figure 4 This is a schematic diagram of the working state of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Reference Figures 1-3 The tooling proposed in this invention for lifting and installing propeller blades mainly includes blade assembly, lifting lugs, and adjustable pressure plate.

[0025] Among them, such as Figure 1 As shown, the propeller assembly is made of steel plate with a rubber lining. The overall outfitting is triangular in shape, with the steel plate being 4mm thick. The assembly consists of two triangular plates and one square plate connected together. The triangular plates are isosceles triangles with sides of 1000mm and a base of 400mm. A 20mm through hole is set at the intersection of the isosceles sides. The square plate is 400mm long and wide. It is lined with 10mm rubber and glued to the steel plate for installation. 22mm through holes are drilled at the four corners and 50mm from the edge of the center of the square plate. M20 nuts are welded to the four corner holes, and 200mm long M20 butterfly bolts are provided for adjusting the pressure bar.

[0026] like Figure 2 As shown, the lifting lug is mainly made of steel column with a diameter of 20mm, bent into a semi-circle with a diameter of 200mm, and directly welded to the square plate of the blade assembly.

[0027] like Figure 3 As shown, the adjustable pressure plate is made of steel plate lined with rubber. The steel plate is 4mm thick and 360mm long and wide. One side of the steel plate is lined with 40mm of rubber and is glued to the steel plate for installation. A 200mm long steel tube with an outer diameter of 20mm and an inner diameter of 16mm is welded to the other side of the steel plate. The bottom of the tube is sealed with a 30mm diameter, 5mm thick cover plate. The purpose of the steel tube is twofold: firstly, to ensure that the adjustable pressure plate's movement direction is perpendicular to the square plate; and secondly, to prevent the adjustable pressure plate from detaching from the blade assembly when not in operation.

[0028] Comparison Figure 4 The working process of this invention is as follows:

[0029] Insert a propeller blade assembly into the top, lower left, and lower right of the propeller blades;

[0030] The three blade assembly triangular plates are connected to each other at their apex using bolts;

[0031] Make the adjustable pressure plate fit tightly against the blade by rotating the butterfly bolt;

[0032] The crane hook is inserted into the lifting lug to carry out the lifting operation.

[0033] In summary, these are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the specification are within the scope of the present invention.

Claims

1. A tooling for lifting and installing propeller blades, comprising several blade assemblies, characterized in that: The blade assembly includes two parallel and symmetrically arranged triangular plates, the base edges of which are fixedly connected by a square plate. When the blade assembly is fitted with the blade, the triangular plates are located on both sides of the blade, and the square plate is facing the edge of the blade. Multiple blade assemblies can be connected to each other at the apex corners of the triangular plates. A locking assembly is provided between the two triangular plates, and the locking assembly is used to adjust the pressure between the square plate and the blade; The square plate is provided with a lifting lug on the side away from the locking assembly; The triangular plate is an isosceles triangle, and a through hole is provided near the apex of the triangular plate; The locking assembly includes an adjustable pressure plate arranged parallel to the square plate. The square plate has bolt holes, and an adjusting bolt passes through the bolt holes. The bottom end of the adjusting bolt abuts against the top surface of the adjustable pressure plate. The square plate has an anti-detachment hole, and the top surface of the adjustable pressure plate has an anti-detachment rod that matches the anti-detachment hole and extends through the anti-detachment hole; the top of the anti-detachment rod has a cover plate, and the size of the cover plate is larger than the diameter of the anti-detachment hole. The inner wall of the triangular plate and the bottom surface of the adjustable pressure plate are both provided with inner rubber lining. The blade assembly is made of steel plate with a thickness of 4mm: The base of the triangular plate is 400mm, the waist of the triangular plate is 1000mm, the thickness of the inner lining rubber on the inner wall of the triangular plate is 10mm, and the diameter of the through hole on the triangular plate is 20mm. The square steel plate has a side length of 400mm, the bolt holes and the anti-loosening holes are both 22mm in diameter, and an M20 nut is welded to the top surface of the square steel plate at the position corresponding to the bolt holes. The adjusting bolt is an M20 butterfly bolt with a length of 200mm. The lifting lug is made of a steel column with a diameter of 20mm and is a semi-circular shape with a diameter of 200mm. The two ends of the lifting lug are directly fixed to the square plate. The adjustable pressure plate is made of steel plate with a thickness of 4mm. The adjustable pressure plate has a side length of 360mm and the inner rubber lining of the adjustable pressure plate floor has a thickness of 40mm. The anti-detachment rod is a steel round tube with an outer diameter of 20mm and an inner diameter of 16mm, and the length of the anti-detachment rod is 200mm; the cover plate is a round steel sheet with a diameter of 30mm and a thickness of 5mm.

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