Stern tube cleaning tool

Abstract

The present invention relates to the field of ship use, and specifically discloses a stern tube cleaning tool, comprising a stern tube, an oil pipe is installed inside the stern tube, a tool is placed inside the stern tube, a pull rod is connected to the tool, an end of the pull rod away from the stern tube is provided with a connecting nut, the lower end of the fixed rod is meshedly connected with a spiral adjusting rod, the lower end of the spiral adjusting rod is rotatably connected to a roller through a connecting block, the upper part of the fixed rod is sleeved with a floating adjusting rod, the outer periphery of the floating adjusting rod is sleeved with a spring, the upper end of the floating adjusting rod is fixed with a second scraper through a fastening bolt, a support frame is fixed on the fixed rod, the middle part of the support frame is meshedly connected with a threaded rod, the tool of the present invention has the characteristics of high efficiency and cleanliness, and provides a tool and method for reference for similar projects.

Description

Technical Field

[0001] The invention relates to the technical field of ship use, in particular to a stern tube cleaning tool. Background Art

[0002] After the CPP stern shaft of the ship was pulled out, it was found that the oil seal in the stern tube had failed. In order to maintain the normal operation of the shaft system, the ship added a large amount of butter into the stern tube. Under the long-term rotation and stirring of the stern shaft, the stern tube was filled with a mixture of butter, water and other garbage.

[0003] However, the existing ones have the following defects when used:

[0004] The mixture sticks to the wall of the stern tube and is difficult to remove completely. The key is that the diameter of the inner hole of the stern tube is very small and people cannot enter to clean it. Relying solely on an extended bamboo pole tied with cloth strips and an iron rake can only remove the main mixture, but cannot completely clean the mixture that sticks to the surface of the stern tube hole wall and has hardened. For this reason, we designed and produced a set of tooling to effectively scrape off the garbage on the hole wall. Summary of the invention

[0005] The object of the present invention is to provide a stern tube cleaning tool to solve the problem that the above mixture adheres to the stern tube wall and is difficult to completely remove.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a stern tube cleaning tool, comprising a stern tube, an oil pipe is installed inside the stern tube, a tool is placed inside the stern tube, a pull rod is connected to the tool, and a connecting nut is provided at one end of the pull rod away from the stern tube.

[0007] Wherein, a threaded rod is arranged on the pull rod, and limiting rings are fixed on both sides of the threaded rod.

[0008] Wherein, the tooling includes a fixed rod, a spiral adjustment rod, a connecting block, a roller, a floating adjustment rod, a spring, a support frame and a cleaning assembly, the lower end of the fixed rod is meshedly connected with the spiral adjustment rod, the lower end of the spiral adjustment rod is rotatably connected to the roller through the connecting block, the upper part of the fixed rod is sleeved with a floating adjustment rod, the outer periphery of the floating adjustment rod is sleeved with a spring, the upper end of the floating adjustment rod is fixed with a second scraper by a fastening bolt, the fixed rod is fixed with a support frame, and the middle part of the support frame is meshedly connected with the threaded rod.

[0009] Wherein, a cleaning assembly is fixed on the pull rod, and the cleaning assembly includes a connecting plate and a first scraper, and the first scraper is fixed on the top end of the connecting plate.

[0010] Wherein, the cleaning component is located directly behind the fixing rod.

[0011] There are two fixing rods, which are symmetrically distributed on both sides of the support frame. The lower outer circular end surface of the fixing rod is arranged in a threaded shape, and the inner circular surface of the spiral adjustment rod is arranged in a threaded shape.

[0012] Wherein, the spring is located at the upper end of the fixing rod.

[0013] Among them, the diameters of the alloy inner holes at both ends of the stern tube are 255mm and 265mm, the diameter of the inner hole of the stern tube is 342mm, and the length is 4400mm.

[0014] Wherein, the length of the pull rod is 3000 mm.

[0015] Wherein, rubber pads are fixed on the upper ends of the first scraper and the second scraper.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The operator of the present invention rotates the pull rod so that the second scraper is staggered with the first scraper, and then pulls the pull rod outward to scrape off the sludge, garbage and other dirt stuck on the hole wall of the stern tube through the second scraper and the first scraper. Since the stern tube is relatively long, when the pull rod is not long enough, the pull rod can be extended by connecting the nut. After the second scraper and the first scraper clean the upper part of the hole wall of the stern tube, the tool is taken out, and after bypassing the oil pipe at the bottom of the stern tube, the tool is put into the stern tube again to clean the left and right directions and the lower hole wall until all the garbage on the hole wall is scraped off. The stern tube cleaning tool effectively solves the problem of cleaning the inner hole wall of the small diameter long stern tube, and the cleaning effect is recognized by the ship at one time. The cleaning work is completed in only half a day, while the traditional method cannot clean the hole wall, and the cleaning work requires more than three days. Therefore, the tool has the characteristics of high efficiency and cleanliness, and provides a reference for tooling and methods for similar projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of a side view of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the tooling of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the floating adjustment rod of the present invention;

[0022] Figure 5 It is a structural schematic diagram of a side view of the tooling of the present invention;

[0023] Figure 6 It is a schematic structural diagram of the pull ring and cleaning assembly of the present invention.

[0024] In the figure: 1. stern tube; 2. oil pipe; 3. pull rod; 31. threaded rod; 32. limit ring; 4. connecting nut; 5. tooling; 51. fixing rod; 52. spiral adjustment rod; 53. connecting block; 54. roller; 55. floating adjustment rod; 56. spring; 57. support frame; 58. cleaning assembly; 581. connecting plate; 582. first scraper; 59. second scraper. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-6 The present invention provides a technical solution: a stern tube cleaning tool, comprising a stern tube 1, an oil pipe 2 is installed inside the stern tube 1, a tool 5 is placed inside the stern tube 1, a pull rod 3 is connected to the tool 5, and a connecting nut 4 is provided at one end of the pull rod 3 away from the stern tube 1. The tool 5 is driven by the pull rod 3 to move back and forth in the inner wall of the stern tube 1, so as to clean the impurities on the inner wall of the stern tube 1.

[0027] Among them, a threaded rod 31 is provided on the pull rod 3, and limiting rings 32 are fixed on both sides of the threaded rod 31. The threaded rod 31 is used to connect the pull rod 3 with the tooling 5, and the limiting rings 32 can limit the moving position of the tooling 5 on the pull rod 3.

[0028] The tooling 5 includes a fixed rod 51, a spiral adjustment rod 52, a connecting block 53, a roller 54, a floating adjustment rod 55, a spring 56, a support frame 57 and a cleaning assembly 58. The lower end of the fixed rod 51 is meshedly connected with the spiral adjustment rod 52, and the lower end of the spiral adjustment rod 52 is rotatably connected to the roller 54 through the connecting block 53. The upper part of the fixed rod 51 is sleeved with a floating adjustment rod 55, and the outer periphery of the floating adjustment rod 55 is sleeved with a spring 56. The upper end of the floating adjustment rod 55 is fixed with a second scraper 59 by a fastening bolt. The support frame 57 is fixed on the fixed rod 51. 7. The middle part of the support frame 57 is meshed and connected with the threaded rod 31, the spring 56 is sleeved on the floating adjustment rod 55, and then the floating adjustment rod 55 is sleeved on the upper part of the fixed rod 51, and then the fixed rod 51 and the support frame 57 are welded together, and then the spiral adjustment rod 52 is screwed into the bottom end of the fixed rod 51, and it is adjusted to the shortest before being placed in the stern tube 1. After being placed in the stern tube 1, the spiral adjustment rod 52 is screwed out to support the entire tooling 5 in the stern tube 1, and the spiral adjustment rod 52 is loosened or tightened as needed to make the force of the second scraper 59 against the inner wall of the stern tube 1 suitable.

[0029] Among them, a cleaning component 58 is fixed on the pull rod 3, and the cleaning component 58 includes a connecting plate 581 and a first scraper 582. The first scraper 582 is fixed to the top of the connecting plate 581. The first scraper 582 can change its installation position inside the stern tube 1 by rotating the pull rod 3, thereby accelerating the cleaning rate of impurities inside it.

[0030] The cleaning assembly 58 is located directly behind the fixing rod 51 , so as to facilitate the adjustment of the installation position of the tooling 5 .

[0031] Among them, there are two fixing rods 51, which are symmetrically distributed on both sides of the support frame 57. The lower outer circular end surface of the fixing rod 51 is set to be threaded, and the inner circular surface of the spiral adjustment rod 52 is set to be threaded. The fixing rod 51 and the spiral adjustment rod 52 are used together to facilitate the connection of the entire cleaning device with the inner wall of the stern tube 1.

[0032] The spring 56 is located at the upper end of the fixing rod 51 . The spring 56 has a buffering effect and can change the position of the second scraper 59 according to the thickness of impurities on the inner wall of the stern tube 1 .

[0033] Among them, the diameters of the alloy inner holes at both ends of the stern tube 1 are 255mm and 265mm, the diameter of the inner hole of the stern tube 1 is 342mm, and the length is 4400mm, which transmits the energy of the main engine to the propeller.

[0034] The length of the pull rod 3 is 3000 mm, and is used to adjust the position of the tooling 5 .

[0035] Wherein, rubber pads are fixed to the upper ends of the first scraper 582 and the second scraper 59 to prevent the first scraper 582 and the second scraper 59 from damaging the inner wall of the stern tube 1 .

[0036] Working principle: When in use, the spring 56 is sleeved on the floating adjustment rod 55, and then the floating adjustment rod 55 is sleeved on the upper part of the fixed rod 51, and then the fixed rod 51 and the support frame 57 are welded together, and then the spiral adjustment rod 52 is screwed into the bottom end of the fixed rod 51, and it is adjusted to the shortest before being placed in the stern tube 1. After being placed in the stern tube 1, the spiral adjustment rod 52 is screwed out to support the entire tooling 5 in the stern tube 1, and the spiral adjustment rod 52 is loosened or tightened as needed to make the force of the second scraper 59 against the inner wall of the stern tube 1 suitable, and the operator rotates the pull rod 3 so that the second scraper 59 and the first scraper 5 82, and then pull rod 3 is pulled outward, so that tool 5 moves outward under the drive of roller 54, and the sludge, garbage and other dirt stuck on the hole wall of stern tube are scraped off by second scraper 59 and first scraper 582. Since stern tube 1 is long, when pull rod 3 is not long enough, it can be extended by connecting nut 4 for use. After the second scraper 59 and the first scraper 582 clean the upper part of the hole wall of stern tube 1, take out tool 5, bypass the oil pipe 2 at the bottom of stern tube 1, and put tool 5 into stern tube 1 again to clean the left and right directions and the lower hole wall until all the garbage on the hole wall is scraped off.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stern tube cleaning tool, comprising a stern tube (1), characterized in that: An oil pipe (2) is installed inside the stern tube (1), a tooling (5) is placed inside the stern tube (1), a pull rod (3) is connected to the tooling (5), and a connecting nut (4) is provided at one end of the pull rod (3) away from the stern tube (1); The pull rod (3) is provided with a threaded rod (31), and limiting rings (32) are fixed on both sides of the threaded rod (31); The tooling (5) comprises a fixed rod (51), a spiral adjustment rod (52), a connecting block (53), a roller (54), a floating adjustment rod (55), a spring (56), a support frame (57) and a cleaning assembly (58); the lower end of the fixed rod (51) is meshedly connected with the spiral adjustment rod (52); the lower end of the spiral adjustment rod (52) is rotatably connected to the roller (54) via the connecting block (53); the upper part of the fixed rod (51) is sleeved with a floating adjustment rod (55); the outer periphery of the floating adjustment rod (55) is sleeved with a spring (56); the upper end of the floating adjustment rod (55) is fixed with a second scraper (59) via a fastening bolt; the supporting frame (57) is fixed to the fixed rod (51); the middle part of the supporting frame (57) is meshedly connected with the threaded rod (31); A cleaning assembly (58) is fixed on the pull rod (3), the cleaning assembly (58) comprising a connecting plate (581) and a first scraper (582), and the first scraper (582) is fixed on the top end of the connecting plate (581); The cleaning assembly (58) is located directly behind the fixing rod (51); Two fixing rods (51) are provided, symmetrically distributed on both sides of the support frame (57); the lower outer circular end surface of the fixing rod (51) is arranged in a threaded shape, and the inner circular surface of the spiral adjustment rod (52) is arranged in a threaded shape.

2. A stern tube cleaning tool according to claim 1, characterized in that: The spring (56) is located at the upper end of the fixing rod (51).

3. The stern tube cleaning tool according to claim 1, characterized in that: The diameters of the alloy inner holes at both ends of the stern tube (1) are 255 mm and 265 mm, the inner hole diameter of the stern tube (1) is 342 mm, and the length is 4400 mm.

4. The stern tube cleaning tool according to claim 1, characterized in that: The length of the pull rod (3) is 3000 mm.

5. The stern tube cleaning tool according to claim 1, characterized in that: Rubber pads are fixed to the upper ends of the first scraper (582) and the second scraper (59).

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