Marine intermediate shaft installation sealing mechanism

Abstract

The utility model belongs to the technical field of marine intermediate shafts, and particularly relates to a marine intermediate shaft installation sealing mechanism which comprises a spline pipe. A spline shaft is installed in an inner cavity of the spline pipe, a sealing ring is arranged on the right side of the spline pipe, the surface of the spline pipe is sleeved with a fixing plate, the top and the bottom of the fixing plate are connected with fixing boxes through screws, and first through grooves are formed in the inner sides of the fixing boxes; an abutting assembly for pressing the sealing ring is arranged in an inner cavity of the fixing box; through the structural design of a threaded rod, a threaded sleeve, a movable rod and a pressing plate, a sealing ring abuts against a spline pipe, the sealing performance between the spline pipe and a spline shaft is improved, the sealing ring is prevented from loosening after being used for a period of time, dust and sewage are prevented from invading the spline pipe, through the structural design of a through hole, a fixing block, a spring and a limiting rod, a handle is fixed, and the service life of the handle is prolonged. And reduction of the extrusion effect of the pressing plate on the sealing ring caused by rotation of the handle during use is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of marine intermediate shafts, in particular to a marine intermediate shaft installation sealing mechanism. Background Art

[0002] The ship shaft system is a power transmission component including an intermediate shaft, a stern shaft, etc. The intermediate shaft is mainly composed of a spline tube and a spline shaft.

[0003] However, in the traditional intermediate shaft, the spline tube and the spline shaft are sealed by bonding a sealing ring, but the sealing effect of the sealing ring alone is poor. After a period of use, dust and sewage are likely to invade the interior of the spline tube, causing damage to parts. Therefore, a marine intermediate shaft installation sealing mechanism is proposed to address the above problem. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing technology has the disadvantage of poor intermediate shaft sealing effect, so we propose a marine intermediate shaft installation sealing mechanism.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a marine intermediate shaft installation sealing mechanism, comprising a spline tube; a spline shaft is installed in the inner cavity of the spline tube, a sealing ring is arranged on the right side of the spline tube, a fixing plate is sleeved on the surface of the spline tube, the top and bottom of the fixing plate are connected to a fixing box by screws, a first through groove is opened on the inner side of the fixing box, and a tightening component for pressing the sealing ring is arranged in the inner cavity of the fixing box.

[0006] Preferably, the clamping assembly includes a threaded rod, a threaded sleeve, a movable rod and a pressure plate, the left side of the fixed box is rotatably connected to the threaded rod via a bearing, the surface of the threaded rod is threadedly connected to the threaded sleeve, the inner side of the threaded sleeve is connected to the movable rod via a screw, the inner side of the movable rod passes through a first through groove and is connected to a pressure plate via screws, a second through groove for cooperating with a spline shaft is provided on the left side of the pressure plate, the left side of the pressure plate contacts with the right side of the sealing ring, and the right side of the inner cavity of the fixed box is rotatably connected to the right side of the threaded rod via a bearing.

[0007] Preferably, a handle is connected to the left side of the threaded rod via a screw, and the surface of the handle is provided with anti-slip patterns.

[0008] Preferably, a through hole is provided on the top of the handle, a fixed block is connected to the left side of the fixed box by screws, springs are fixedly connected to both sides of the outer side of the fixed block, a moving block is fixedly connected to the outer side of the spring, a limiting rod is connected to the center of the inner side of the moving block by screws, and the inner side of the limiting rod passes through the fixed block and the through hole in sequence and extends inward.

[0009] Preferably, both sides of the inner cavity of the fixing box are connected with sliding columns by screws, the surface of the sliding column is slidably connected with a sliding sleeve, and the inner side of the sliding sleeve is connected to the outer side of the threaded sleeve by screws.

[0010] Preferably, a maintenance cover is provided on the front side of the fixing box.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model uses the structural design of the threaded rod, threaded sleeve, movable rod and pressure plate to press the sealing ring against the spline tube, thereby improving the sealing performance between the spline tube and the spline shaft, preventing the sealing ring from loosening after a period of use, and preventing dust and sewage from invading the interior of the spline tube;

[0013] 2. The utility model fixes the handle through the structural design of the through hole, the fixing block, the spring and the limiting rod, thereby preventing the handle from rotating during use, thereby preventing the pressure plate from reducing the squeezing effect on the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a front view of the spline tube and spline shaft structure of the utility model;

[0017] Figure 3 This is a cross-sectional view of the fixing box structure of the utility model;

[0018] Figure 4 For the utility model Figure 3 An enlarged view of the structure at point A is shown.

[0019] In the figure: 1. spline tube; 2. spline shaft; 3. sealing ring; 4. fixing plate; 5. fixing box; 6. tightening assembly; 61. threaded rod; 62. threaded sleeve; 63. moving rod; 64. pressure plate; 7. handle; 8. fixing block; 9. spring; 10. moving block; 11. limiting rod; 12. sliding column; 13. sliding sleeve. DETAILED DESCRIPTION

[0020] 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 in 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.

[0021] The following is combined with Figure 1-4 To further explain this application in detail,

[0022] The present application embodiment discloses a marine intermediate shaft installation sealing mechanism. Figure 1 and Figure 2 A marine intermediate shaft installation sealing mechanism comprises a spline tube 1; a spline shaft 2 is installed in the inner cavity of the spline tube 1, a sealing ring 3 is arranged on the right side of the spline tube 1, a fixing plate 4 is sleeved on the surface of the spline tube 1, and a fixing box 5 is connected to the top and bottom of the fixing plate 4 by screws, a first through groove is opened on the inner side of the fixing box 5, and a pressing component 6 for pressing the sealing ring 3 is arranged in the inner cavity of the fixing box 5; the sealing ring 3 seals the gap between the spline tube 1 and the spline shaft 2.

[0023] Reference Figure 3 and Figure 4 The clamping assembly 6 includes a threaded rod 61, a threaded sleeve 62, a moving rod 63 and a pressure plate 64. The left side of the fixed box 5 is rotatably connected to the threaded rod 61 through a bearing. The surface of the threaded rod 61 is threadedly connected to the threaded sleeve 62. The inner side of the threaded sleeve 62 is connected to the moving rod 63 through a screw. The inner side of the moving rod 63 passes through a first through groove and is connected to a pressure plate 64 through screws. A second through groove for use with the spline shaft 2 is provided on the left side of the pressure plate 64. The left side of the pressure plate 64 contacts the right side of the sealing ring 3. The right side of the inner cavity of the fixed box 5 is rotatably connected to the right side of the threaded rod 61 through a bearing; by driving the pressure plate 64 to move to the left, the sealing ring 3 is squeezed, so that the sealing ring 3 is in close contact with the spline tube 1.

[0024] Reference Figure 3 The left side of the threaded rod 61 is connected with a handle 7 by a screw, and the surface of the handle 7 is provided with anti-skid patterns; it is convenient for the user to rotate the threaded rod 61, and the handle 7 has strong anti-skid properties.

[0025] Reference Figure 3 and Figure 4A through hole is provided on the top of the handle 7, and a fixed block 8 is connected to the left side of the fixed box 5 by screws. Springs 9 are fixedly connected to both sides of the outer side of the fixed block 8, and a moving block 10 is fixedly connected to the outer side of the spring 9. A limiting rod 11 is connected to the center of the inner side of the moving block 10 by screws, and the inner side of the limiting rod 11 passes through the fixed block 8 and the through hole in sequence and extends inward; the handle 7 is fixed to prevent the handle 7 from rotating during use, resulting in a reduction in the squeezing effect of the pressure plate 64 on the sealing ring 3.

[0026] Reference Figure 3 Both sides of the inner cavity of the fixed box 5 are connected with sliding columns 12 by screws, and the surface of the sliding column 12 is slidably connected with a sliding sleeve 13, and the inner side of the sliding sleeve 13 is connected to the outer side of the threaded sleeve 62 by screws; the threaded sleeve 62 is limited to prevent the threaded sleeve 62 from rotating with the threaded rod 61, and the auxiliary threaded sleeve 62 moves, thereby improving the stability of the threaded sleeve 62, thereby improving the stability of the moving rod 63 and the pressure plate 64.

[0027] Reference Figure 1 A maintenance cover is provided on the front of the fixing box 5, so as to facilitate maintenance of the parts inside the fixing box 5.

[0028] Working principle: the user adheres the sealing ring 3 to the right side of the spline tube 1, and then the user pulls the moving block 10 outward. The moving block 10 stretches the spring 9 and drives the limiting rod 11 to move outward. Then the user rotates the handle 7, and the handle 7 drives the threaded rod 61 to rotate, so that the threaded rod 61 drives the threaded sleeve 62 to move to the left, and then the threaded sleeve 62 drives the moving rod 63 to move to the left, and the moving rod 63 drives the pressure plate 64 to move to the left, which generates an extrusion force on the sealing ring 3, presses the sealing ring 3 against the spline tube 1, and improves the sealing performance of the intermediate shaft.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A sealing mechanism for installing a marine intermediate shaft, characterized in that: The invention comprises a spline tube (1); a spline shaft (2) is installed in the inner cavity of the spline tube (1); a sealing ring (3) is arranged on the right side of the spline tube (1); a fixing plate (4) is sleeved on the surface of the spline tube (1); the top and bottom of the fixing plate (4) are connected to a fixing box (5) by screws; a first through groove is opened on the inner side of the fixing box (5); and a tightening component (6) for pressing the sealing ring (3) is arranged in the inner cavity of the fixing box (5).

2. A marine intermediate shaft installation sealing mechanism according to claim 1, characterized in that: The clamping assembly (6) comprises a threaded rod (61), a threaded sleeve (62), a movable rod (63) and a pressure plate (64); the left side of the fixed box (5) is rotatably connected to the threaded rod (61) via a bearing; the surface of the threaded rod (61) is threadedly connected to the threaded sleeve (62); the inner side of the threaded sleeve (62) is connected to the movable rod (63) via a screw; the inner side of the movable rod (63) passes through a first through groove and is connected to the pressure plate (64) via a screw; the left side of the pressure plate (64) is provided with a second through groove for matching with the spline shaft (2); the left side of the pressure plate (64) contacts the right side of the sealing ring (3); and the right side of the inner cavity of the fixed box (5) is rotatably connected to the right side of the threaded rod (61) via a bearing.

3. A marine intermediate shaft installation sealing mechanism according to claim 2, characterized in that: The left side of the threaded rod (61) is connected to a handle (7) via a screw, and the surface of the handle (7) is provided with anti-slip patterns.

4. A marine intermediate shaft installation sealing mechanism according to claim 3, characterized in that: A through hole is provided at the top of the handle (7); a fixed block (8) is connected to the left side of the fixed box (5) by screws; springs (9) are fixedly connected to both sides of the outer side of the fixed block (8); a moving block (10) is fixedly connected to the outer side of the spring (9); a limiting rod (11) is connected to the center of the inner side of the moving block (10) by screws; the inner side of the limiting rod (11) passes through the fixed block (8) and the through hole in sequence and extends inward.

5. A marine intermediate shaft installation sealing mechanism according to claim 1, characterized in that: Both sides of the inner cavity of the fixing box (5) are connected to sliding columns (12) by screws, the surface of the sliding column (12) is slidably connected to a sliding sleeve (13), and the inner side of the sliding sleeve (13) is connected to the outer side of the threaded sleeve (62) by screws.

6. A marine intermediate shaft installation sealing mechanism according to claim 1, characterized in that: The front side of the fixing box (5) is provided with a maintenance cover.

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