A rudder pin bushing installation cleaning device

Abstract

The utility model belongs to ship technology field especially relates to a ship rudder pin bushing installation cleaning device, including the pipeline connection sleeve and the nozzle mounting sleeve that interpenetrate, the pipeline connection sleeve with the nozzle mounting sleeve can stretch into the rudder pin bearing hole, the both ends of nozzle mounting sleeve are connected with a nozzle respectively, the inboard of nozzle mounting sleeve is equipped with sand material adjusting block, sand material adjusting block both sides are equipped with the taper surface, and sand material meets the taper surface of sand material adjusting block can change the direction of flowing. The utility model discloses above structure, through setting up nozzle mounting sleeve and setting up nozzle at nozzle mounting sleeve both ends, make the nozzle can be perpendicular to the hole wall, and sand material changes the direction of flowing after sand material adjusting block, makes sand material and hole wall fully contact, improves the cleaning efficiency of hole wall.

Description

Technical Field

[0001] This utility model belongs to the field of marine technology, and in particular relates to a marine rudder pin bushing installation and cleaning device. Background Technology

[0002] During ship navigation, the rudder system is used frequently, especially the rotation of the rudder blades. The rotation of the rudder blades relies on the support and rotation of the rudder pin to ensure their normal operation. The rotation of the rudder pin depends on the rudder pin bushing, therefore, the bushings experience significant wear, inevitably requiring frequent replacement. The rudder pin bearing is the foundation supporting the rudder pin bushing. Because the rudder pin bearing is immersed in seawater year-round, it is made of cast steel. Although the bushing and bearing are interference-fitted, the bushing, being a non-metallic material (usually made of cast iron or cast steel), is prone to deformation over time. This inevitably leads to seawater corrosion on the bushing and bearing surfaces, reducing the contact strength between the bushing and the bearing surface. This can cause the rudder pin to rotate during operation, rendering the bushing ineffective and creating a safety hazard for the ship. The best way to repair corrosion of the rudder pin bearing is to re-bor it. However, this will reduce the support strength of the rudder pin bearing and compromise the safe operation of the ship. In this case, a reasonable rudder pin bushing repair and installation method is of paramount importance to ensure the normal operation of the rudder system.

[0003] When replacing the rudder pin bushing, it is necessary to clean the debris inside the mounting hole. Currently, a sandblasting machine is generally used to clean the debris inside the hole. The nozzle of the existing sandblasting machine is directly installed at the end of the pipe connecting sleeve. The sand material enters the nozzle directly from the conveying pipe. When cleaning the bushing hole, the sand material cannot fully contact the hole wall. The hole wall can only be cleaned by tilting the nozzle. Moreover, as the depth of the bearing hole increases, it is even more difficult for the sand material to fully contact the hole wall, which increases the difficulty of the cleaning work. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a cleaning device that can effectively remove debris from the hole, ensure that the sand and the debris in the hole can fully contact each other, and improve the cleaning efficiency of the debris in the hole.

[0005] To solve the above-mentioned technical problems, this utility model provides a ship rudder pin bushing installation and cleaning device, including a pipe connecting sleeve and a nozzle mounting sleeve that are interconnected. The pipe connecting sleeve and the nozzle mounting sleeve can extend into the rudder pin bearing hole. A nozzle is connected to each end of the nozzle mounting sleeve. A sand adjusting block is provided on the inner side of the nozzle mounting sleeve. The sand adjusting block has conical surfaces on both sides. When the sand encounters the conical surfaces of the sand adjusting block, it can change the direction of flow.

[0006] This utility model, through the above structure, by setting a nozzle mounting sleeve and setting nozzles at both ends of the nozzle mounting sleeve, allows the nozzles to be perpendicular to the hole wall. After the sand material passes through the sand material adjusting block, the flow direction is changed, so that the sand material is in full contact with the hole wall, thereby improving the cleaning efficiency of the hole wall.

[0007] Preferably, the sand adjusting block slides relative to the nozzle mounting sleeve, and changing the position of the sand adjusting block at the junction of the pipe connecting sleeve and the nozzle mounting sleeve can change the amount of sand sprayed on both sides.

[0008] Preferably, the sand adjusting block is provided with sliding sleeves on both sides, the sliding sleeves are coaxially arranged with the sand adjusting block, and each sliding sleeve is provided with a fixed sleeve on its inner side. The fixed sleeve is provided with a bracket for connecting the nozzle mounting sleeve on its outer side.

[0009] Preferably, the fixed sleeve is slidable relative to the sliding sleeve, and an adjusting rod that rotates relative to it is fitted inside the fixed sleeve. The adjusting rod is threadedly connected to the sand adjusting block. Limiting rings are provided at both ends of the adjusting rod. The limiting rings restrict the adjusting rod from moving along its axial direction. The limiting rings are rotatably connected to the adjusting rod, and at the same time, the limiting rings are fixed to the inner wall of the fixed sleeve. Attached Figure Description

[0010] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0011] Figure 1 This is a three-dimensional structural diagram of the cleaning device in this utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of the cleaning device in this utility model;

[0013] Figure 3 This is a schematic diagram of the internal structure of the nozzle mounting sleeve in this utility model;

[0014] Figure 4 This is a schematic diagram showing the installation positions of the sliding sleeve and the fixed sleeve in this utility model;

[0015] In the diagram: 201-pipe connection sleeve, 202-nozzle mounting sleeve, 203-sand adjusting block, 204-sliding sleeve, 205-fixed sleeve, 206-adjusting rod, 208-bracket, 209-limiting ring. Detailed Implementation

[0016] This utility model provides a cleaning device for the installation of ship rudder pin bushings, including a pipe connecting sleeve 201 and a nozzle mounting sleeve 202 that are interconnected. The pipe connecting sleeve 201 and the nozzle mounting sleeve 202 can extend into the rudder pin bearing hole. One end of the pipe connecting sleeve 201 is connected to the middle of the nozzle mounting sleeve 202, and the other end of the pipe connecting sleeve 201 can be connected to a sand conveying pipe. A nozzle is connected to each end of the nozzle mounting sleeve 202. A sand adjusting block 203 is provided inside the nozzle mounting sleeve 202. 203 has a structure in which the thickness gradually decreases from its center of rotation to its edge. That is, the sand adjusting block 203 has conical surfaces on both sides. When the sand encounters the conical surfaces, it can change its flow direction. The sand adjusting block 203 is located at the junction of the pipe connecting sleeve 201 and the nozzle mounting sleeve 202. When the sand in the sand conveying pipe enters the inner side of the nozzle mounting sleeve 202 through the pipe connecting sleeve 201, the sand changes its flow direction when it comes into contact with the conical surface of the sand adjusting block 203. The sand is then sprayed out by the nozzles on both sides of the two nozzle mounting sleeves 202.

[0017] This invention, through the above structure, addresses the issue that existing nozzles are directly installed at the end of the pipe connecting sleeve 201, allowing sand to enter the nozzle directly from the conveying pipe. When cleaning bearing holes, this results in insufficient contact between the sand and the hole wall, requiring the nozzle to be tilted for cleaning. Furthermore, as the depth of the bearing hole increases, this contact becomes even more difficult, increasing the cleaning workload. By setting up a nozzle mounting sleeve 202 with nozzles at both ends, the nozzles are positioned perpendicular to the hole wall. The sand's flow direction is changed after passing through the sand adjusting block 203, ensuring full contact with the hole wall and improving cleaning efficiency. When cleaning the inside of the hole, rotating the pipe connecting sleeve 201 within a 90-degree range completes the cleaning of the entire hole.

[0018] Preferably, the sand adjusting block 203 can slide relative to the nozzle mounting sleeve 202. Changing the position of the sand adjusting block 203 at the junction of the pipe connecting sleeve 201 and the nozzle mounting sleeve 202 can change the amount of sand sprayed on both sides. Figure 4In the sand adjusting block 203, sliding sleeves 204 are provided on both sides. The sliding sleeves 204 are coaxially arranged with the sand adjusting block 203. The two sliding sleeves 204 are connected to each other after passing through the sand adjusting block 203. A fixed sleeve 205 is provided on the inner side of each sliding sleeve 204. The fixed sleeve 205 can slide relative to the sliding sleeve 204. An adjusting rod 206 that rotates relative to the fixed sleeve 205 is fitted on the inner side of the fixed sleeve 205. The adjusting rod 206 is threaded to the sand adjusting block 203. Limiting rings 209 are provided at both ends of the adjusting rod 206. The limiting rings 209 restrict the adjusting rod 206 from moving along its axial direction. The limiting rings 209 are rotatably connected to the adjusting rod 206. At the same time, the limiting rings are fixed to the inner wall of the fixed sleeve 205. A bracket 208 for connecting the nozzle mounting sleeve 202 is provided on the outer side of the fixed sleeve 205. The adjusting rod 206 has grooves at both ends. The driving tool is placed in the groove and can drive the adjusting rod 206 to rotate, thereby adjusting the position of the sand adjusting block 203 inside the nozzle mounting sleeve 202.

[0019] In order to reduce the wear of sand on the internal components of the bidirectional sandblasting nozzle during the sandblasting process, wear-resistant materials, such as hard alloys, are used for the internal components of the bidirectional sandblasting nozzle.

[0020] Through the above structure, the sand adjusting block 203 is initially positioned at the midpoint of the connection between the pipe connecting sleeve 201 and the nozzle mounting sleeve 202. Sand enters the nozzle mounting sleeve 202 from the pipe connecting sleeve 201, and after being blocked by the sand adjusting block 203, moves to both sides along the conical surface of the sand adjusting block 203, causing the sand to flow out from the nozzles installed on both sides of the nozzle mounting sleeve 202. Since the fixed sleeve 205 is connected to the nozzle mounting sleeve 202 via the bracket 208, when the adjusting rod 206 is rotated, because the adjusting rod 206 is threadedly connected to the sand adjusting block 203, and both ends of the adjusting rod 206 are provided with limiting rings 209 to restrict its axial movement, the adjusting rod 206 rotates... At the same time, the sand adjusting block 203 can move along the axial direction of the adjusting rod 206, that is, the sand adjusting block 203 drives the sliding sleeve 204 to move relative to the fixed sleeve 205, and at the same time, the sand adjusting block 203 moves relative to the nozzle mounting sleeve 202, changing the position of the sand adjusting block 203 relative to the nozzle mounting sleeve 202, changing the flow area of ​​sand on both sides of the nozzle mounting sleeve 202, thereby changing the amount of sand sprayed on both sides; when the amount of sand sprayed from the nozzles on both sides is the same, the two nozzles clean the hole wall at the same time, improving the cleaning efficiency; when the spraying amounts of the nozzles on both sides are different, the nozzle with a large flow rate can remove most of the debris in the hole, while the nozzle with a small flow rate is responsible for cleaning the fine residual debris in the hole, avoiding over-cleaning of the hole wall.

[0021] This utility model, through the above structure, by setting a nozzle mounting sleeve and setting nozzles at both ends of the nozzle mounting sleeve, allows the nozzles to be perpendicular to the hole wall. After the sand material passes through the sand material adjusting block, the flow direction is changed, so that the sand material is in full contact with the hole wall, thereby improving the cleaning efficiency of the hole wall.

[0022] The bidirectional sandblasting nozzles improve the cleaning accuracy and efficiency of the rudder pin bearing mounting holes; they also allow the two nozzles to clean the holes with different sandblasting volumes, making them adaptable to different operating environments.

[0023] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A device for cleaning and installing ship rudder pin bushings, comprising a pipe connecting sleeve and a nozzle mounting sleeve that are interconnected, characterized in that, The pipe connecting sleeve and the nozzle mounting sleeve can extend into the rudder pin bearing hole. A nozzle is connected to each end of the nozzle mounting sleeve. A sand adjusting block is provided on the inner side of the nozzle mounting sleeve. The sand adjusting block has conical surfaces on both sides. When the sand encounters the conical surfaces of the sand adjusting block, it can change the direction of flow.

2. The ship rudder pin bushing installation and cleaning device as described in claim 1, characterized in that, The sand adjusting block slides relative to the nozzle mounting sleeve. Changing the position of the sand adjusting block at the junction of the pipe connecting sleeve and the nozzle mounting sleeve can change the amount of sand sprayed on both sides.

3. The ship rudder pin bushing installation and cleaning device as described in claim 2, characterized in that, The sand adjusting block is provided with sliding sleeves on both sides. The sliding sleeves are coaxially arranged with the sand adjusting block. Each sliding sleeve has a fixed sleeve on its inner side. The fixed sleeve has a bracket for connecting the nozzle mounting sleeve on its outer side.

4. The ship rudder pin bushing installation and cleaning device as described in claim 3, characterized in that, The fixed sleeve can slide relative to the sliding sleeve. An adjusting rod that rotates relative to the fixed sleeve is fitted inside the fixed sleeve. The adjusting rod is threadedly connected to the sand adjusting block. Limiting rings are provided at both ends of the adjusting rod. The limiting rings restrict the adjusting rod from moving along its axial direction. The limiting rings are rotatably connected to the adjusting rod and are fixed to the inner wall of the fixed sleeve.

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