Marine propeller correction device

Abstract

A marine propeller correction device comprises a fixed bracket and a movable bracket, wherein a positioning cylinder is arranged on the top of the fixed bracket, a positioning rod is connected to the bottom of the positioning cylinder, a workbench corresponding to the positioning rod is arranged on the bottom of the fixed bracket, a propeller is placed on the workbench, a connecting flange is arranged below the positioning cylinder, a rotating sleeve is arranged on the outer wall of the connecting flange through a bearing, at least three groups of equally divided cantilevers are arranged on the outer wall of the rotating sleeve, each group of cantilevers is arranged with a laterally sliding correction cylinder, each correction cylinder is connected to a correction pressure rod, an upper push cylinder is arranged on the movable bracket, an upper push rod is connected to the upper push cylinder, the number of the upper push cylinders and the correction cylinders corresponds to the number of propeller blades, and during operation, the upper push rod presses on the bottom surface of the propeller, and the correction pressure rod presses on the top surface of the propeller.

Description

Technical Field

[0001] The invention relates to a marine propeller correction device, which is mainly used for correcting the pitch of a marine propeller. Background Art

[0002] It is normal for a ship's propeller to hit a hard object during navigation, such as stones, bamboo, wood, and fishing nets. Existing propellers are mainly made of copper alloys, and cast propellers are difficult to achieve the strength and toughness to collide with hard objects. After the propeller collides with a hard object, it will deform, break, and cause the pitch between the blades to increase or decrease, thereby affecting the efficiency of the propeller. In response to this situation, there is currently no equipment specifically used to repair blades. The measures taken are: if the deformation is small, it will be ignored, which has the disadvantage of affecting the efficiency of the propeller; if the damage is serious, the propeller will be directly replaced, which has the disadvantage of high cost. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a marine propeller correction device which is cost-effective, highly effective and specially used for correcting blade deformation.

[0004] The technical solution of the marine propeller correction device of the present invention is: it is characterized by comprising a fixed bracket and a movable bracket, a positioning cylinder is arranged on the top of the fixed bracket, a positioning rod is connected under the positioning cylinder, a workbench corresponding to the positioning rod is arranged at the bottom of the fixed bracket, the propeller is placed on the workbench, a connecting flange is arranged below the positioning cylinder, a rotating sleeve is arranged on the outer wall of the connecting flange through a bearing, at least 3 groups of equally divided cantilevers are arranged on the outer wall of the rotating sleeve, each group of cantilevers is arranged on a transversely sliding correction cylinder, each correction cylinder is connected under a correction pressure rod, an upper push cylinder is arranged on the movable bracket, an upper push rod is connected to the upper push cylinder, the number of the upper push cylinder and the correction cylinder corresponds to the number of propeller blades, and during operation, the upper push rod presses on the bottom surface of the propeller, and the correction pressure rod presses on the top surface of the propeller.

[0005] The marine propeller correction device of the present invention, when in operation, places the damaged propeller on a workbench, then the positioning cylinder works to drive the positioning rod to be pressed down, fixes the propeller on the workbench and does not move, then the operator moves the movable bracket to the bottom of the propeller, aligns the upper push rod with the damaged (deformed) part of the propeller, then the upper push rod is driven upward by the upper push cylinder to push against the damaged part, then the operator manually drives the cantilever to rotate, and drives the correction cylinder to move horizontally left and right, so that the correction pressure rod is aligned with the damaged (deformed) part on the propeller, then the correction cylinder works to drive the correction pressure rod to be pressed downward to press the damaged part of the propeller, so that the deformed part is corrected, the pitch between the blades of the propeller is adjusted, and the use effect of the propeller is improved. In actual operation, if the blade is deformed and bent upward, the upper push rod will press on the bent part and the correcting pressure rod will press downward. If the blade is deformed and bent downward, the correcting pressure rod will press on the bent part and the upper push rod will push upward. If the pitch of the blade becomes smaller, the correcting pressure rod will press on the leading edge of the blade and the upper push rod will press on the trailing edge of the blade to increase the pitch. If the pitch of the blade becomes larger, the correcting pressure rod will press on the trailing edge of the blade and the upper push rod will press on the leading edge of the blade to reduce the pitch.

[0006] The marine propeller correction device of the present invention comprises two cantilever arms arranged opposite to each other, the correction oil cylinder is located between the two channel steels, rollers are arranged on the outer walls of the correction oil cylinder, and the rollers are matched with the grooves of the channel steels; or sliders are arranged on the outer walls of the correction oil cylinder, and guide rails are arranged in the grooves of the channel steels, and the sliders are matched with the guide rails. The rollers roll in the grooves, or the sliders slide on the guide rails, which can ensure that the correction oil cylinder can move horizontally conveniently and easily. The distance L between the top surface of the cylinder body of the correction oil cylinder and the top of the fixed bracket is less than or equal to the height H of the groove of the channel steel. In actual use, since the strength of the channel steel is limited, and the downward pressure reaction force borne by the correction oil cylinder is large, when the correction pressure rod is pressed downward, the correction oil cylinder moves upward to press on the fixed bracket 1, and the upward distance is less than the height of the groove. The outer wall of the rotating sleeve is provided with 3, 4, 5, 6 or 7 groups of cantilever arms, and when in use, the number of cantilever arms is determined according to the number of propeller blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of a marine propeller correction device of the present invention;

[0008] Figure 2 It is a schematic diagram of the cantilever of the present invention being 4 groups;

[0009] Figure 3 It is a schematic diagram of the cooperation between the roller and the groove of the channel steel of the present invention;

[0010] Figure 4 It is a schematic diagram of the cooperation between the slider and the guide rail of the present invention. DETAILED DESCRIPTION

[0011] The present invention relates to a marine propeller correction device, such as Figure 1 — Figure 4As shown, it includes a fixed bracket 1 and a movable bracket 2, a positioning cylinder 3 is arranged on the top of the fixed bracket, a positioning rod 4 is connected to the bottom of the positioning cylinder, a workbench 5 corresponding to the positioning rod is arranged at the bottom of the fixed bracket, a propeller 01 is placed on the workbench, a connecting flange 15 is arranged below the positioning cylinder 3, a rotating sleeve 7 is arranged on the outer wall of the connecting flange through a bearing 6, at least three groups of equally divided cantilevers 8 are arranged on the outer wall of the rotating sleeve, each group of cantilevers is provided with a laterally sliding correction cylinder 9, each correction cylinder is connected to a correction pressure rod 10, an upper push cylinder 11 is arranged on the movable bracket 2, an upper push rod 12 is connected to the upper push cylinder, the number of the upper push cylinder 11 and the correction cylinder 9 corresponds to the number of blades of the propeller 01, during operation, the upper push rod 12 presses on the bottom surface of the propeller 01, and the correction pressure rod 10 presses on the top surface of the propeller 01. During operation, the damaged propeller 01 is placed on the workbench 5, and then the positioning cylinder 3 is operated to drive the positioning rod 4 to be pressed down, so that the propeller 01 is fixed on the workbench and does not move. Then the operator moves the movable bracket 2 to the bottom of the propeller 01, and aligns the upper push rod 12 with the damaged (deformed) part of the propeller. Then the upper push rod 12 is driven upward by the upper push cylinder 11 to push against the damaged part. Then, the operator manually drives the cantilever 8 to rotate, and drives the correction cylinder 9 to move horizontally left and right, so that the correction pressure rod 10 is aligned with the damaged (deformed) part of the propeller. Then the correction cylinder 9 is operated to drive the correction pressure rod 10 to press down on the damaged part of the propeller, so that the deformed part is corrected, the pitch between the propeller blades is adjusted, and the use effect of the propeller is improved. In actual operation, if the blade is deformed and bent upward, the upper push rod 12 is pressed on the bent part and the correction pressure rod 10 is pressed downward. If the blade is deformed and bent downward, the correction pressure rod 10 is pressed on the bent part and the upper push rod 12 is pushed upward. If the pitch of the blade becomes smaller, the correction pressure rod 10 is pressed on the leading edge of the blade and the upper push rod 12 is pressed on the trailing edge of the blade to increase the pitch. If the pitch of the blade becomes larger, the correction pressure rod 10 is pressed on the trailing edge of the blade and the upper push rod 12 is pressed on the leading edge of the blade to reduce the pitch. The cantilever 8 is composed of two channel steels 81 arranged facing each other, and the correction cylinder 9 is located between the two channel steels 81. Rollers 82 are arranged on the outer walls of the correction cylinder 9 on both sides, and the rollers 82 match the grooves 83 of the channel steel 81; or sliders 91 are arranged on the outer walls of the correction cylinder 9 on both sides, and guide rails 92 are arranged in the grooves of the channel steel 81, and the sliders 91 match the guide rails 92. The rollers rolling in the grooves or the sliders sliding on the guide rails can ensure that the correction cylinder can move horizontally conveniently and easily. The distance L between the top surface of the cylinder body of the correction cylinder 9 and the top of the fixed bracket 1 is less than or equal to the height H of the channel steel groove 83. In actual use, since the strength of the channel steel is limited, and the downward pressure reaction force borne by the correction cylinder is large, when the correction pressure rod is pressed down, the correction cylinder moves upward to press on the fixed bracket 1, and its upward movement distance is less than the height of the groove. The outer wall of the rotating sleeve 7 is provided with 3, 4, 5, 6 or 7 groups of cantilevers 8, such as Figure 2 The figure shows an embodiment of 4 groups of cantilevers. When in use, the number of cantilever groups is determined according to the number of propeller blades.

Claims

1. Marine propeller correction device, characterized in that The invention comprises a fixed support (1) and a movable support (2), wherein a positioning cylinder (3) is arranged on the top of the fixed support, a positioning rod (4) is connected to the bottom of the positioning cylinder, a workbench (5) corresponding to the positioning rod is arranged at the bottom of the fixed support, a propeller (01) is placed on the workbench, a connecting flange (15) is arranged below the positioning cylinder (3), a rotating sleeve (7) is arranged on the outer wall of the connecting flange through a bearing (6), cantilevers (8) are arranged on the outer wall of the rotating sleeve, a correcting cylinder (9) for transverse sliding is arranged on each group of cantilevers, and a correcting pressure rod (10) is connected to the bottom of each correcting cylinder, an upper push cylinder (11) is arranged on the movable support (2), an upper push rod (12) is connected to the upper push cylinder, the number of the upper push cylinder (11) and the correcting cylinder (9) corresponds to the number of blades of the propeller (01), and during operation, the upper push cylinder (11) is arranged on the movable support (2), and the number of the upper push cylinder (11) and the correcting cylinder (9) corresponds to the number of blades of the propeller (01). The rod (12) is pressed against the bottom surface of the propeller (01), and the correction pressure rod (10) is pressed against the top surface of the propeller (01). The cantilever (8) is composed of two channel steels (81) arranged opposite to each other. The correction cylinder (9) is located between the two channel steels (81). Rollers (82) are arranged on the outer walls of both sides of the correction cylinder (9), and the rollers (82) match with the grooves (83) of the channel steel (81); or sliders (91) are arranged on the outer walls of both sides of the correction cylinder (9), and guide rails (92) are arranged in the grooves of the channel steel (81), and the sliders (91) match with the guide rails (92). The distance L between the top surface of the cylinder body of the correction cylinder (9) and the top of the fixed bracket (1) is less than or equal to the height H of the groove (83) of the channel steel, and 4 groups, 5 groups, 6 groups or 7 groups of cantilever (8) are arranged on the outer wall of the rotating sleeve (7).

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