Sundry winding prevention device for ship propeller

Abstract

An impurity winding prevention device for a ship thruster comprises at least one first cutting knife linked with a propeller; the second cutting knife is fixedly arranged on a shell of the driving device, and the driving device is used for driving the propeller to rotate and driving the first cutting knife to rotate relative to the second cutting knife, so that the first cutting knife and the second cutting knife form shearing fit; one end of the cutting device is fixedly connected with the first cutting knife, the other end of the cutting device is fixedly connected with the propeller, a plurality of cutting knife heads which are arranged in an array mode are arranged on the surface of the cutting device, the first cutting knife and the second cutting knife are provided with cutting faces which form shearing matching, and arc-shaped tips are arranged at the top ends of the cutting faces. And when the arc-shaped tip and the cutting surface rotate oppositely, a cutting space surrounding an object to be cut is formed between the arc-shaped tip and the cutting surface. Sundries such as ropes are cut off through cooperative shearing of a first cutter and a second cutter, meanwhile, a net-shaped structure is smashed and cut off through a cutting device, a propeller is prevented from being locked by the sundries, overload burning of a driving device is avoided, normal work of the propeller is guaranteed, and meanwhile the cutting requirements of the sundries in different forms can be met; in addition, when the arc-shaped tips move relatively, the function of collecting the sundries to be cut in the cutting space is achieved, and the phenomenon that the sundries are separated from the cutting face in the cutting process can be avoided.

Description

Technical Field

[0001] The utility model specifically relates to a device for preventing debris from winding up on a ship propeller. Background Art

[0002] At present, the propulsion device of a ship generally adopts a propeller, which is composed of a hub and propeller blades. The propeller is connected to the output shaft of the motor through the stern shaft, and the stern shaft is connected to the hull through bearings, bearing seats and sealing devices. The stern shaft drives the propeller to rotate to drive the navigation of the ship.

[0003] In some complex waters, such as those rich in herbaceous plants such as aquatic plants and fabrics such as fishing nets and ropes, the propeller of a ship may be entangled by the above debris when it is sailing, affecting the normal operation of the propeller. Sometimes the propeller may be locked by the debris, causing the motor to be unable to rotate or even burn, which may easily cause safety accidents. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a ship propeller anti-wrapping device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A ship propeller anti-wrapping device, comprising:

[0007] At least one first cutting knife, arranged in linkage with the propeller;

[0008] A second cutting knife is fixedly arranged on the housing of the driving device, and the driving device is used to drive the propeller to rotate and drive the first cutting knife to rotate relative to the second cutting knife, so that the first cutting knife and the second cutting knife form a shearing fit;

[0009] A cutting device, one end of which is fixedly connected to the first cutting knife, and the other end of which is fixedly connected to the propeller, and a plurality of cutting heads arranged in an array are provided on the surface of the cutting device,

[0010] The first cutting knife and the second cutting knife have cutting surfaces for shearing cooperation, and the tops of the cutting surfaces are provided with arc-shaped tips. When the two are rotated toward each other, a cutting space surrounding the object to be cut is formed between the arc-shaped tips and the cutting surfaces.

[0011] The first cutting knife is fixedly connected to the cutting device via a first connecting plate.

[0012] At least one side of the first cutting knife is provided with a first cutting surface, and the first cutting surface forms a first cutting edge on the first cutting knife.

[0013] The width of the first cutting knife gradually widens along its extension direction. The first cutting knife forms a first arc portion at one end away from the first connecting plate. Both ends of the first arc portion are provided with first tips on the side facing away from the first cutting surface.

[0014] The second cutting knife is fixedly connected to the housing of the driving device via a second connecting plate.

[0015] At least one side of the second cutting knife is provided with a second cutting surface, and the second cutting surface forms a second cutting edge on the second cutting knife.

[0016] The width of the second cutting knife gradually widens along its extension direction. The second cutting knife forms a second arc portion at one end away from the second connecting plate. Both ends of the second arc portion are provided with second tips on the side facing away from the second cutting surface.

[0017] The cutting device comprises an I-shaped connecting shaft, one end of which is fixedly connected to a first cutting knife, and the other end of which is fixedly connected to a propeller. A plurality of cutting knives are arranged around the I-shaped connecting shaft.

[0018] The cutting tool comprises:

[0019] Flat blade;

[0020] The arc-shaped blade has an arc angle R of 600 to 1200 mm.

[0021] The beneficial effects of the utility model include: utilizing the coordinated shearing of the first cutting knife and the second cutting knife to cut off debris such as ropes, and utilizing the cutting device to crush and remove the mesh structure, thereby preventing debris from locking the propeller, avoiding overload and burning of the drive device, ensuring the normal operation of the propeller, and meeting the cutting needs of debris in different forms. In addition, the arc-shaped tip plays a role in gathering the debris to be cut within the cutting space during relative motion, thereby avoiding the phenomenon of debris detaching from the cutting surface during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a structural schematic diagram of the second cutting knife of the utility model.

[0024] Figure 3 It is a structural schematic diagram of the first cutting knife of the utility model.

[0025] Figure 4 It is a schematic diagram of the cooperation between the first cutting knife and the second cutting knife of the utility model. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] As shown in the figure, a ship propeller anti-entanglement device can be applied to the ship propeller, which includes a first cutting knife 2, a second cutting knife 1 and a cutting device 5, wherein the second cutting knife is relatively fixed to the outer shell of the driving device 3, and the first cutting knife and the cutting device are fixedly connected to the propeller 4. When the driving device drives the propeller to rotate, the first cutting knife and the second cutting knife form a shearing fit.

[0029] The driving device is an electric motor (such as an electrical machine), and the driving device can also be a hydraulic driving machine (such as a hydraulic cylinder), as long as it can drive the propeller to rotate.

[0030] During the process of the propeller being driven by the driving device, the first cutter on the propeller can rotate with the propeller. When the first cutter rotates to meet the second cutter, the first cutter and the second cutter form a shearing action, thereby being able to cut off the debris entangled between the propeller and the output end of the driving device, preventing the debris from locking the propeller, avoiding the burning of the driving device, and ensuring the normal operation of the propeller. At the same time, the first cutter rotates with the rotation of the propeller, and cooperates with the second cutter to cut the entanglement. There is no need to configure additional drive parts for the first cutter and the second cutter, the structure is simpler, and the cost can be reduced. For example, when a ship's propeller is sailing in a complex water environment, the propeller anti-entanglement device can ensure the normal navigation of the ship and improve the safety of navigation.

[0031] The cutting device rotates synchronously with the first cutting knife, and uses the cutting tools distributed on its surface to completely cut the fishing net and other debris wrapped thereon, and cooperates with the shearing action of the first cutting knife and the second cutting knife to achieve cutting of various debris, thereby improving the cutting effect.

[0032] At least one first cutting knife is arranged in linkage with the propeller, and is detachably connected to the propeller, and can be replaced according to wear and tear, thereby reducing subsequent maintenance costs.

[0033] The first cutting knife 2 is fixedly connected to the cutting device via a first connecting plate 21, wherein the first cutting knife can be directly formed on the first connecting plate, or directly fixed to the first connecting plate in a detachable manner.

[0034] At least one side of the first cutting knife is provided with a first cutting surface 23, and the first cutting surface forms a first cutting edge on the first cutting knife.

[0035] The width of the first cutting knife gradually widens along its extension direction. The first cutting knife forms a first arc portion 22 at one end away from the first connecting plate. Both ends of the first arc portion are provided with first tips 24 on the side facing away from the first cutting surface.

[0036] The second cutting knife 1 is fixedly arranged on the housing of the driving device, and can be detachably connected to the housing for easy later maintenance. The driving device is used to drive the propeller to rotate and drive the first cutting knife to rotate relative to the second cutting knife, so that the first cutting knife and the second cutting knife form a shearing fit.

[0037] The second cutting knife is fixedly connected to the housing of the driving device via a second connecting plate 11 . The second cutting knife may be integrally formed on the second connecting plate or detachably connected to the second connecting plate.

[0038] There are one or two second cutting knives, which are stacked and arranged on both sides of the second connecting plate 11 .

[0039] At least one side of the second cutting knife is provided with a second cutting surface 13, and the second cutting surface forms a second cutting edge on the second cutting knife.

[0040] The width of the second cutting knife gradually widens along its extension direction. The second cutting knife forms a second arc portion 12 at one end away from the second connecting plate. Both ends of the second arc portion are provided with second tips 14 on the side facing away from the second cutting surface.

[0041] The first cutting knife and the second cutting knife fit together, and the first blade and the second blade fit together, forming a scissors-like structure, which is convenient for quickly cutting off debris.

[0042] At the same time, when the first tip and the second tip are close to each other, the debris is gathered in the cutting space to prevent it from being separated from the cutting surface during the cutting process and affecting the cutting effect.

[0043] A cutting device, one end of which is fixedly connected to the first cutting knife, and the other end of which is fixedly connected to the propeller, and a plurality of cutting heads arranged in an array are provided on the surface of the cutting device.

[0044] The cutting device 5 comprises an I-shaped connecting shaft, one end of which is fixedly connected to the first cutting knife, and the other end of which is fixedly connected to the propeller. A plurality of cutting knives 6 are arranged around the I-shaped connecting shaft.

[0045] The cutting tool comprises:

[0046] Flat blade;

[0047] The arc-shaped blade has an arc R of 600-1200 mm. The cooperation of multiple blade heads can meet different cutting requirements. At the same time, the flat blade and the arc-shaped blade are arranged at intervals and along the axis direction of the cutting device.

[0048] By setting a cutting device, net debris such as fishing nets can be cut better.

[0049] The first cutting knife and the second cutting knife have cutting surfaces for shearing cooperation, and the tops of the cutting surfaces are provided with arc-shaped tips. When the two are rotated toward each other, a cutting space 7 surrounding the object to be cut is formed between the arc-shaped tips and the cutting surfaces.

[0050] During cutting, the debris to be cut can be gathered to prevent it from falling off the cutting surface, thereby improving the cutting efficiency.

[0051] The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A ship propeller anti-entanglement device, characterized in that: It includes: At least one first cutting knife, arranged in linkage with the propeller; A second cutting knife is fixedly arranged on the housing of the driving device, and the driving device is used to drive the propeller to rotate and drive the first cutting knife to rotate relative to the second cutting knife, so that the first cutting knife and the second cutting knife form a shearing fit; A cutting device, one end of which is fixedly connected to the first cutting knife, and the other end of which is fixedly connected to the propeller, and a plurality of cutting heads arranged in an array are provided on the surface of the cutting device, The first cutting knife and the second cutting knife have cutting surfaces for shearing cooperation, and the tops of the cutting surfaces are provided with arc-shaped tips. When the two are rotated toward each other, a cutting space surrounding the object to be cut is formed between the arc-shaped tips and the cutting surfaces.

2. The ship propeller anti-entanglement device according to claim 1, characterized in that: The first cutting knife is fixedly connected to the cutting device via a first connecting plate.

3. The ship propeller anti-entanglement device according to claim 2, characterized in that: At least one side of the first cutting knife is provided with a first cutting surface, and the first cutting surface forms a first cutting edge on the first cutting knife.

4. The ship propeller anti-entanglement device according to claim 3, characterized in that: The width of the first cutting knife gradually widens along its extension direction. The first cutting knife forms a first arc portion at one end away from the first connecting plate. Both ends of the first arc portion are provided with first tips on the side facing away from the first cutting surface.

5. The ship propeller anti-entanglement device according to claim 1, characterized in that: The second cutting knife is fixedly connected to the housing of the driving device via a second connecting plate.

6. The ship propeller anti-entanglement device according to claim 5, characterized in that: At least one side of the second cutting knife is provided with a second cutting surface, and the second cutting surface forms a second cutting edge on the second cutting knife.

7. The ship propeller anti-entanglement device according to claim 6, characterized in that: The width of the second cutting knife gradually widens along its extension direction. The second cutting knife forms a second arc portion at one end away from the second connecting plate. Both ends of the second arc portion are provided with second tips on the side facing away from the second cutting surface.

8. The ship propeller anti-entanglement device according to claim 1, characterized in that: The cutting device comprises an I-shaped connecting shaft, one end of which is fixedly connected to a first cutting knife, and the other end of which is fixedly connected to a propeller. A plurality of cutting knives are arranged around the I-shaped connecting shaft.

9. The ship propeller anti-entanglement device according to claim 8, characterized in that: The cutting tool comprises: Flat blade; The arc-shaped blade has an arc angle R of 600 to 1200 mm.

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