Marine detachable single propeller blade hoisting device

Abstract

The embodiment of the invention provides a marine detachable single propeller blade hoisting device. The marine detachable single propeller blade hoisting device comprises main encircling steel plate belts arranged in pairs, auxiliary encircling steel plate belts arranged in pairs, a plurality of main connecting steel plate belts and four groups of guide wheels, the two groups of main embracing steel plate belts arranged in pairs are correspondingly arranged on the surfaces of the two sides of the propeller blades, are fixedly connected at the edge positions of the propeller blades through connecting bolts and are used for embracing and hooping the propeller blades; the auxiliary embracing steel plate belt is arranged on one side of the main embracing steel plate belt and arranged by referring to the main embracing steel plate belt. The main connecting steel plate belts are correspondingly arranged between the main encircling steel plate belts and the auxiliary encircling steel plate belts on the same side surfaces of the propeller blades, the main connecting steel plate belts are arranged at intervals, and the main encircling steel plate belts and the auxiliary encircling steel plate belts are connected and fixed; the guide wheel is sleeved on the connecting bolt, and a middle wheel groove of the guide wheel is clamped at the edge position of the propeller blade. The embodiment of the invention has the characteristics of simple structure, convenience in manufacturing, safety, convenience and high efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of marine propeller hoisting, in particular to a hoisting device for a detachable single-piece marine propeller blade. Background Art

[0002] Marine propellers are generally in the form of 3 blades or 4 blades, and the weight of a single blade is generally less than 3 tons. When assembling and disassembling for maintenance, the single blades need to be separated for hoisting. Currently, the main method for hoisting single blades is to use a hoisting fiber belt for bundling and hoisting. However, due to the irregular shape and sharp edges of the blade, using a hoisting fiber belt for hoisting is likely to cut the fiber belt, resulting in a risk of falling. Moreover, when bundling with a flexible fiber belt, it is easy to have problems with inaccurate center of gravity control, which further leads to difficulty in keeping the propeller blade balanced during hoisting. Unbalanced hoisting will further cause misalignment of bolt holes, making the installation difficult and the hoisting time long. Therefore, there is an urgent need for a hoisting device for single propeller blades that can meet different shapes, sizes, and installation angles to effectively improve the safety and efficiency of single propeller blade hoisting. Summary of the Invention

[0003] In view of the above problems existing in the prior art, the embodiments of the present invention provide a hoisting device for a detachable single-piece marine propeller blade to solve the technical problems of insufficient hoisting safety and low hoisting efficiency existing in the prior art.

[0004] The embodiments of the present invention provide a hoisting device for a detachable single-piece marine propeller blade, including:

[0005] Pairs of main surrounding steel belts, pairs of secondary surrounding steel belts, several main connecting steel belts, and four groups of guide wheels;

[0006] Pairs of two groups of main surrounding steel belts are correspondingly arranged on both side surfaces of the propeller blade, and the two are connected and fixed at the edge position of the propeller blade through connecting bolts, and the propeller blade is tightly clamped by closing;

[0007] The secondary surrounding steel belts are arranged on one side of the main surrounding steel belts. Pairs of two groups of secondary surrounding steel belts are correspondingly arranged on both side surfaces of the propeller blade, and the two are connected and fixed at the edge position of the propeller blade through connecting bolts, and the propeller blade is tightly clamped by closing;

[0008] The main connecting steel belts are correspondingly arranged between the main surrounding steel belts and the secondary surrounding steel belts on the same side surface of the propeller blade. Several main connecting steel belts are arranged at intervals and connect and fix the main surrounding steel belts and the secondary surrounding steel belts;

[0009] The guide wheels are sleeved on the connecting bolts, and the middle wheel grooves are stuck at the edge position of the propeller blade.

[0010] In one embodiment, the fitting length of the main surrounding steel strip and the propeller blade is greater than that of the auxiliary surrounding steel strip and the propeller blade.

[0011] In one embodiment, a main lifting lug is fixedly arranged at the middle position of the main surrounding steel strip, and auxiliary lifting lugs are respectively arranged on both sides of the main lifting lug.

[0012] In one embodiment, it further includes:

[0013] An auxiliary connecting steel strip, which is correspondingly arranged between the main surrounding steel strip and the auxiliary surrounding steel strip on the same side surface of the propeller blade, and one end of it is fixedly welded to the main surrounding steel strip at the position of the main lifting lug.

[0014] In one embodiment, the main surrounding steel strip and the main connecting steel strip, and the auxiliary surrounding steel strip and the main connecting steel strip are both fixedly connected by connecting bolts.

[0015] In one embodiment, a plurality of groups of through holes arranged at intervals are provided at the connection positions of the two groups of main surrounding steel strips arranged in pairs, the two groups of auxiliary surrounding steel strips arranged in pairs, the main surrounding steel strip and the main connecting steel strip, and the auxiliary surrounding steel strip and the main connecting steel strip.

[0016] In one embodiment, the guide wheel is a rubber guide wheel.

[0017] In one embodiment, rubber pads are fixed on the inner sides of the main surrounding steel strip, the auxiliary surrounding steel strip, the main connecting steel strip and the auxiliary connecting steel strip.

[0018] In one embodiment, there are four groups of main connecting steel strips, and the end of each group of main connecting steel strips is arranged at a position close to the edge of the propeller blade.

[0019] Compared with the prior art, the beneficial effects of a marine decomposable single-piece propeller blade lifting device provided by the embodiment of the present invention are as follows:

[0020] 1. The structure of the embodiment of the present invention is simple and convenient to manufacture. The propeller blade is surrounded and bundled by the steel strip in a surrounding manner. The steel strip with both rigidity and flexibility will neither be cut nor can it fit well with the propeller blade. Moreover, the setting of the guide wheel can not only protect the edge of the blade from being worn, but also automatically adjust the steel strip to a more stable stress state as the lifting force increases during the lifting stage, greatly improving the safety of lifting;

[0021] 2. The embodiment of the present invention highly meets the actual needs of on-site production, can meet the lifting, installation and removal of single-piece propeller blades of different ships. The steel strips are detachably installed by connecting bolts, and can be flexibly adjusted according to the size and lifting angle of the blade. The operation and use are simple, the applicable range is wide, and it has the characteristics of safety, convenience and speed;

[0022] 3. The embodiment of the present invention is easy to manufacture. The main body assembly can be completed only by drilling holes in flat iron and configuring bolts. The guide wheels can use waste rubber guide wheels to ensure uniform force on the stress points, which is safe and reliable. Fixed rubber sheets are installed inside the steel strip to effectively protect the surface of the propeller blade from being worn by hard materials.

[0023] 4. In the embodiment of the present invention, the structure of the hanging point position is strengthened by the auxiliary connecting steel strip. At the same time, the addition of the auxiliary hanging code enables it to horizontally traction and limit the lifting system through a chain block, which can better meet the requirements of on-site installation and disassembly operations.

[0024] 5. The embodiment of the present invention has low production cost investment, is light in weight, and can be operated and assembled by a single person until lifting. It is very convenient to use, the operation process is relatively simple, and it has the characteristics of safety, convenience and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the front view of a marine decomposable single-piece propeller blade lifting device provided by the embodiment of the present invention;

[0026] Figure 2 is the side view of a marine decomposable single-piece propeller blade lifting device provided by the embodiment of the present invention;

[0027] Figure 3 is the top view of a marine decomposable single-piece propeller blade lifting device provided by the embodiment of the present invention;

[0028] Figure 4 is the structural schematic diagram of the guide wheel involved in the embodiment of the present invention.

[0029] Reference Signs:

[0030] 1. Main surrounding steel strip; 2. Auxiliary surrounding steel strip; 3. Main connecting steel strip; 4. Auxiliary connecting steel strip; 5. Main hanging code; 6. Auxiliary hanging code; 7. Through hole; 8. Connecting bolt; 9. Guide wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below with reference to the drawings and specific embodiments.

[0032] Reference is made herein to the various embodiments and features of the present application as described with reference to the drawings.

[0033] These and other features of the present application will become apparent from the following description of the preferred forms of the embodiments given as non-limiting examples with reference to the drawings.

[0034] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art can surely implement many other equivalent forms of the present application, which have the features as described in the claims and thus are all within the protection scope defined hereby.

[0035] When combined with the accompanying drawings, the above and other aspects, features and advantages of the present application will become more obvious in view of the following detailed description.

[0036] Specific embodiments of the present application will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments claimed are only examples of the present application, which can be implemented in various ways. Well-known and / or repetitive functions and structures are not described in detail to clarify the true intention based on the user's historical operations and to avoid unnecessary or redundant details from obscuring the present application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but are merely used as a basis and representative basis for the claims to teach those skilled in the art to use the present application in substantially any suitable detailed structure in various ways.

[0037] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", all of which may refer to one or more of the same or different embodiments according to the present application.

[0038] The principles and features of the present invention will be described hereinafter with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention. The following combination of Figures 1-4 , a further detailed description of the preferred embodiments of the present invention will be given:

[0039] As Figures 1-4 shown, an embodiment of the present invention provides a marine decomposable single-piece propeller blade hoisting device, including:

[0040] Pairs of main surrounding steel belts 1, pairs of secondary surrounding steel belts 2, several main connecting steel belts 3 and four groups of guide wheels 9;

[0041] Pairs of two groups of main surrounding steel belts 1 are correspondingly arranged on both side surfaces of the propeller blade, and the two are fixedly connected by connecting bolts 8 at the edge position of the propeller blade, and the propeller blade is tightly clamped by embracing;

[0042] The secondary surrounding steel belt 2 is arranged on one side of the main surrounding steel belt 1. Pairs of two groups of secondary surrounding steel belts 2 are correspondingly arranged on both side surfaces of the propeller blade, and the two are fixedly connected by connecting bolts 8 at the edge position of the propeller blade, and the propeller blade is tightly clamped by embracing;

[0043] The main connecting steel strip 3 is correspondingly arranged between the main surrounding steel strip 1 and the auxiliary surrounding steel strip 2 on the same side surface of the propeller blade. A plurality of main connecting steel strips 3 are arranged at intervals and connect and fix the main surrounding steel strip 1 and the auxiliary surrounding steel strip 2;

[0044] The guide wheel 9 is sleeved on the connecting bolt 8, and the middle wheel groove thereof is stuck at the edge position of the propeller blade;

[0045] In one embodiment, for the lifting operation of a single-type propeller blade, considering the convenience of manufacturing and operation, the main connecting steel strip 3, the main surrounding steel strip 1 and the auxiliary connecting steel strip 4 are all connected and fixed by welding;

[0046] In another embodiment, considering the versatility of the device and to meet the requirements of different models and lifting angles, the main surrounding steel strip 1 and the main connecting steel strip 3, and the auxiliary surrounding steel strip 2 and the main connecting steel strip 3 are all connected and fixed by connecting bolts 8. And at the connection positions of the two sets of main surrounding steel strips 1 arranged in pairs, the two sets of auxiliary surrounding steel strips 2 arranged in pairs, the main surrounding steel strip 1 and the main connecting steel strip 3, and the auxiliary surrounding steel strip 2 and the main connecting steel strip 3, a plurality of groups of through holes 7 are arranged at intervals (of course, a plurality of circular through holes 7 can also be replaced by strip-shaped through holes 7). In this way, during the assembly process of the lifting device, only according to the actual lifting requirements, the two steel strips to be connected are overlapped according to the required length, and then fixed by passing the connecting bolt 8 through the overlapping through holes 7. In this way, the versatility of the lifting device can be effectively improved, and a set of devices can meet the lifting requirements of different scenarios;

[0047] In one embodiment, the fitting length of the main surrounding steel strip 1 and the propeller blade is greater than the fitting length of the auxiliary surrounding steel strip 2 and the propeller blade. And a main lifting code 5 is fixedly arranged at the middle position of the main surrounding steel strip 1, and auxiliary lifting codes 6 are respectively arranged on both sides of the main lifting code 5. The steel strip hoop with a larger upper part and a smaller lower part plus the setting method with the upper part as the lifting point can ensure that the propeller blade is gradually tightened during the whole lifting process and there is no risk of slipping and falling. Moreover, the addition of the auxiliary lifting code 6 can, on the one hand, provide power for horizontal displacement through a manual hoist when the propeller blade needs to be horizontally lifted, and on the other hand, can also cooperate with the manual hoist as a stabilizing rope when the propeller blade is reinstalled to avoid the problem of excessive shaking amplitude of the propeller blade, so as to reduce the operation difficulty and improve the operation efficiency;

[0048] As described above, in order to facilitate the connection of the suspension ropes, a main lifting code 5 and a secondary lifting code 6 are added to the main surrounding steel belt 1. Based on this, in order to ensure the structural strength of the lifting device and avoid excessive deformation at the lifting points, the lifting device further includes a secondary connecting steel belt 4. The secondary connecting steel belt 4 is correspondingly arranged between the main surrounding steel belt 1 and the secondary surrounding steel belt 2 on the same side surface of the propeller blade, and one end of it is welded and fixed to the main surrounding steel belt 1 at the position of the main lifting code 5. Also considering universality, the secondary connecting steel belt 4 should be set in a form with adjustable length. The specific adjustment method can be that the secondary surrounding steel belt 2 is set as a whole, and a number of through holes 7 are spacedly opened at the other end, and a through hole 7 is correspondingly opened in the middle of the secondary surrounding steel belt 2 for passing through a connecting bolt 8. Of course, the secondary connecting steel belt 4 can also be set in a two-section structural form. A number of through holes 7 are correspondingly opened at the opposite ends of the two sections of the secondary connecting steel belt 4 and are connected by connecting bolts 8, and the opposite ends are correspondingly welded to the main surrounding steel belt 1 or the secondary surrounding steel belt 2;

[0049] In one embodiment, in order to simplify the structure of the lifting device as much as possible, four groups of main connecting steel belts 3 are provided. The end of each group of main connecting steel belts 3 is arranged at a position close to the edge of the propeller blade, that is, the main surrounding steel belt 1, the secondary surrounding steel belt 2 and the two main connecting steel belts 3 located on the same side surface of the propeller blade form a cross-shaped frame structure;

[0050] Considering the angle of avoiding abrasion to the propeller blade, rubber pads are fixed on the inner sides of the main surrounding steel belt 1, the secondary surrounding steel belt 2, the main connecting steel belt 3 and the secondary connecting steel belt 4, and the guide wheel 9 is a rubber guide wheel.

[0051] In one embodiment, each steel belt in the lifting device is made of flat iron with a width of 70 mm and a thickness of 10 mm, and the surface of the flat iron should be subjected to anti-corrosion treatment. After the device is manufactured, the corners of the flat iron and the edges of the through holes 7 need to be polished smoothly. After adjusting and assembling each part, a physical object (propeller blade) is used for testing to check the stress state at the positions of the four guide wheels 9 and the protection condition at the contact positions between the lifting device and the propeller blade. If problems are found, they should be adjusted in time. At the same time, prepare some waste clothes, which can be stuffed according to the actual gap positions as protection pads. After all inspections are correct, it can be put into use.

[0052] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A decomposable single-piece propeller blade lifting device for a ship, characterized in that: include: Main encircling steel strips (1) arranged in pairs, secondary encircling steel strips (2) arranged in pairs, a plurality of main connecting steel strips (3) and four sets of guide wheels (9); Two sets of main embracing steel plate belts (1) are arranged in pairs and are correspondingly arranged on the two side surfaces of the propeller blade. The two are connected and fixed at the edge of the propeller blade by connecting bolts (8) to achieve embracing and tightening of the propeller blade. The secondary embracing steel plate belt (2) is arranged on one side of the primary embracing steel plate belt (1), and two groups of secondary embracing steel plate belts (2) arranged in pairs are correspondingly arranged on the two side surfaces of the propeller blade, and the two are connected and fixed at the edge position of the propeller blade by connecting bolts (8), so as to realize the embracing and tightening of the propeller blade; The main connecting steel strip (3) is correspondingly arranged between the main surrounding steel strip (1) and the secondary surrounding steel strip (2) on the same side surface of the propeller blade, and a plurality of main connecting steel strips (3) are arranged at intervals, and the main surrounding steel strip (1) and the secondary surrounding steel strip (2) are connected and fixed; The guide wheel (9) is sleeved on the connecting bolt (8), and the middle wheel groove thereof is clamped at the edge of the propeller blade.

2. The decomposable single-piece propeller blade lifting device for a ship according to claim 1, characterized in that: The fitting length between the main encircling steel plate strip (1) and the propeller blade is greater than the fitting length between the secondary encircling steel plate strip (2) and the propeller blade.

3. The decomposable single-piece propeller blade lifting device for a ship according to claim 2, characterized in that: A main hanging weight (5) is fixedly arranged at the middle position of the main surrounding steel plate strip (1), and auxiliary hanging weights (6) are respectively arranged on both sides of the main hanging weight (5).

4. A detachable single-piece propeller blade lifting device for a ship according to claim 3, characterized in that: Also includes: A secondary connecting steel plate belt (4), wherein the secondary connecting steel plate belt (4) is correspondingly arranged between the main surrounding steel plate belt (1) and the secondary surrounding steel plate belt (2) on the same side surface of the propeller blade, and one end of the secondary connecting steel plate belt (4) is welded and fixed to the main surrounding steel plate belt (1) at the position of the main hanging bracket (5).

5. The decomposable single-piece propeller blade lifting device for a ship according to claim 1, characterized in that: The main encircling steel strip (1) and the main connecting steel strip (3), as well as the secondary encircling steel strip (2) and the main connecting steel strip (3) are connected and fixed by connecting bolts (8).

6. The decomposable single-piece propeller blade lifting device for a ship according to claim 1, characterized in that: A plurality of groups of through holes (7) arranged at intervals are provided at the connection positions of two groups of main encircling steel strips (1) arranged in pairs, two groups of secondary encircling steel strips (2) arranged in pairs, the main encircling steel strips (1) and the main connecting steel strips (3), and the secondary encircling steel strips (2) and the main connecting steel strips (3).

7. The decomposable single-piece propeller blade lifting device for a ship according to claim 1, characterized in that: The guide wheel (9) is a rubber guide wheel.

8. The decomposable single-piece propeller blade lifting device for a ship according to claim 4, characterized in that: Rubber pads are fixed on the inner sides of the main embracing steel plate belt (1), the secondary embracing steel plate belt (2), the main connecting steel plate belt (3) and the secondary connecting steel plate belt (4).

9. The decomposable single-piece propeller blade lifting device for a ship according to claim 1, characterized in that: Four groups of main connecting steel plate strips (3) are provided, and the end of each group of main connecting steel plate strips (3) is arranged at a position close to the edge of the propeller blade.

Images