A pressure test tool for a ship's log

Abstract

The application relates to the technical field of log testing equipment, and discloses a ship log pressure test tool, which comprises a base, the upper surface of the base is fixedly connected with a mounting seat, a plurality of connecting rods are arranged above the mounting seat, the outer surface of one of the connecting rods is inserted into the inner side of the mounting seat, and the inside of the mounting seat is provided with a limiting assembly. The ship log pressure test tool solves the separation risk of the inserted connecting rod caused by the lack of limiting through the cooperation of the locking assembly and the limiting assembly, can ensure automatic alignment during insertion under the adaptive design of the connecting block, the insertion slot and the clamping slot, reduces assembly deviation, and the rotation of the connecting rod after insertion can make one end of the connecting block inserted into the inside of the clamping slot. Then, the double constraints of the insertion locking of the locking assembly and the active limiting of the limiting assembly make the connecting rod unable to move in the radial direction or the axial direction after insertion, avoids breakage or loosening, and ensures the stability of the test tool.

Description

Technical Field

[0001] This application relates to the technical field of log testing equipment, specifically a pressure testing fixture for a ship log. Background Technology

[0002] Marine odometers are essential instruments used on ships to measure and record their distances. Their accuracy and reliability are crucial for the ship's navigation safety and economic efficiency. To ensure the odometer functions properly under various conditions, rigorous testing is required during the design and manufacturing stages. Pressure testing is a vital method for evaluating the odometer's performance and accuracy under specific pressure environments.

[0003] An existing patent (publication number: CN22054209 U) discloses a pressure testing device for a marine odometer. It includes a base and a housing, and a lifting rod installed between the base and the housing. A hydraulic cylinder is mounted above the lifting rod, and the housing is detachably mounted on top of the hydraulic cylinder. A detachable support rod assembly is provided at the bottom of the lifting rod, and a caster wheel is mounted at one end of the base.

[0004] The above solution can quickly shorten or increase the overall height by installing or removing the connecting rods. However, since there is no limiting component to lock the connecting rods, the reliability of the connection between the connecting rods is greatly reduced. During the use of the tooling, the plug-in parts will face the risk of breakage or separation due to the lack of stable connection. Once the plug-in parts have a problem, the structural stability of the entire tooling will be seriously affected, and may even directly lead to the failure of the tooling, making it impossible to complete the pressure test task of the ship's odometer. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a pressure testing fixture for a ship's odometer. The fixture features a dual constraint formed by the insertion locking of the locking component and the active limiting of the limiting component. This prevents the connecting rod from moving radially or axially after insertion, thus avoiding breakage or loosening and ensuring the stability of the testing fixture. This solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, this application provides the following technical solution: a pressure testing fixture for a ship's odometer, comprising a base, a mounting seat fixedly connected to the upper surface of the base, a plurality of connecting rods above the mounting seat, the outer surface of one of the connecting rods being inserted into the inner side of the mounting seat, a limiting component inside the mounting seat, a positioning hole on the bottom surface of each connecting rod, two circumferentially arrayed slots on the bottom surface of each connecting rod, a slot on the inner side of each slot, two circumferentially arrayed connecting blocks fixedly connected to the outer side of the connecting rod, the connecting blocks being adapted to the inner wall of the slot, the end of the connecting block being inserted into the inner wall of the slot, two sets of circumferentially arrayed locking components on the inner side of each connecting rod, a positioning post fixedly connected to the upper surface of each connecting rod, a mounting plate above the mounting seat, a hydraulic cylinder fixedly connected to the upper surface of the mounting plate, and a sealing cover fixedly connected to the output end of the hydraulic cylinder.

[0007] The above solution, through the cooperation of locking and limiting components, solves the risk of separation caused by the lack of limiting in plug-in connecting rods. Then, with the adaptation design of connecting block and slot / groove, automatic alignment can be ensured during insertion, reducing assembly deviation. At the same time, the rotation of the connecting rod after insertion allows one end of the connecting block to be inserted into the groove. Then, the insertion locking of the locking component and the active limiting of the limiting component form a double constraint, preventing the connecting rod from moving radially or axially after insertion, avoiding breakage or loosening, and ensuring the stability of the experimental fixture.

[0008] Furthermore, the locking assembly includes a component groove formed on the outer side of the connecting rod, a movable plate slidably connected to the inner side of the component groove, an insert rod fixedly connected to the upper surface of the movable plate, and one end of the insert rod away from the upper surface of the movable plate penetrating the inner wall of the connecting rod and inserting into the inner side of the connecting block.

[0009] Through the above scheme, the sliding action of the movable plate in the component slot and the insertion action of the plug rod realize the automatic locking of the plug rod to the connecting block, forming a mechanical interlock, without the need for additional manual operation.

[0010] Furthermore, a spring is fixedly connected to the bottom surface of the movable plate, and the end of the spring away from the bottom surface of the movable plate is fixedly connected to the inner wall of the component groove.

[0011] With the above solution, when the connecting rod is inserted into the mounting base, the spring will automatically insert the rod into the connecting block under the elastic force of the spring, thus forming a mechanical lock without the need for additional manual operation.

[0012] Furthermore, the external dimensions of the positioning post are adapted to the inner wall dimensions of the positioning hole.

[0013] The above solution ensures that the dimensions of the positioning pins and positioning holes are matched to ensure that the upper and lower connecting rods are automatically aligned when they are inserted, eliminating installation resistance or local stress concentration caused by misalignment. At the same time, the guiding effect of the positioning pins keeps the multiple connecting rods coaxial when stacked, preventing the overall tooling from tilting.

[0014] Furthermore, a collar is fixedly connected to the bottom surface of the mounting plate, and the outer surface of the positioning post is inserted into the inner side of the collar. The positioning post and the collar are fixedly connected by bolts.

[0015] Through the above scheme, the sleeve and positioning post are connected by bolts to form a rigid connection node, which ensures the stability of the mounting plate. Furthermore, the use of bolts enables quick disassembly and installation of the mounting plate, thus facilitating the inspection and maintenance of the components on the mounting plate.

[0016] Furthermore, a pressure gauge is fixedly installed on the outer surface of the sealing cover, a water injection pipe is fixedly installed on the inner wall of the sealing cover, and a solenoid valve is fixedly installed on the outer surface of the water injection pipe.

[0017] The above scheme, which combines a pressure gauge, water injection pipe, and solenoid valve, enables real-time monitoring and closed-loop control of the test pressure, preventing overpressure from causing overload deformation of the connecting rod and improving the safety of the test.

[0018] Furthermore, a sealing gasket is fixedly connected to the outer surface of the sealing cover, and four rectangular array of guide telescopic rods are fixedly connected to the upper surface of the hydraulic cylinder, with the telescopic ends of the guide telescopic rods fixedly connected to the bottom surface of the sealing cover.

[0019] The above-mentioned solution and the sealing gasket can prevent the test medium from seeping into the insertion part and causing corrosion or scaling, thus improving the sealing performance during testing. The guide telescopic rod can then limit the horizontal displacement of the sealing cover, ensuring that the pressure load is transmitted along the axis of the connecting rod and avoiding shear damage to the insertion structure by lateral forces.

[0020] Furthermore, the limiting component includes a component cavity opened inside the mounting base. An arc-shaped pressure block is slidably connected to the inner wall of the component cavity. A lead screw is rotatably connected to one side of the arc-shaped pressure block, and the outer surface of the lead screw is threaded to the inner wall of the mounting base. An anti-slip pad is fixedly connected to the outer side of the arc-shaped pressure block, and a rotating handle is fixedly connected to the end of the lead screw away from the arc-shaped pressure block.

[0021] Through the above scheme, the threaded drive structure with lead screw and arc-shaped pressure block achieves radial pressing of the connecting rod by rotating the handle, ensuring the stability of the connecting rod. The pressing force can be steplessly adjusted by the number of rotations to adapt to the fixing requirements of connecting rods of different diameters. At the same time, the anti-slip design of the anti-slip pad increases the contact friction and prevents slippage due to vibration after pressing, further improving the stability of the connecting rod.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects: This pressure testing fixture for a ship's odometer solves the risk of separation caused by the lack of limiting on plug-in connecting rods through the cooperation of locking and limiting components. Furthermore, the adaptive design of the connecting block with the slot and groove ensures automatic alignment during insertion, reducing assembly deviations. Simultaneously, the rotation of the connecting rod after insertion allows one end of the connecting block to be inserted into the groove. The locking component's insertion locking and the limiting component's active limiting form a dual constraint, preventing the connecting rod from moving radially or axially after insertion, avoiding breakage or loosening, and ensuring the stability of the testing fixture. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the entire application; Figure 2 This is a three-dimensional structural diagram of the connecting rod in this application; Figure 3 This is a schematic diagram of the internal structure of the connecting rod in this application; Figure 4 This is a three-dimensional structural diagram of the positioning column, hydraulic cylinder, and sealing cover of this application; Figure 5 This is a schematic diagram of the internal structure of the mounting base in this application.

[0024] In the picture: 1. Base; 2. Mounting base; 3. Connecting rod; 4. Positioning hole; 5. Slot; 6. Card slot; 7. Locking assembly; 701. Assembly slot; 702. Moving plate; 703. Spring; 704. Insert rod; 8. Connecting block; 9. Positioning post; 10. Mounting plate; 11. Hydraulic cylinder; 12. Sealing cover; 13. Pressure gauge; 14. Water injection pipe; 15. Solenoid valve; 16. Sealing gasket; 17. Guide telescopic rod; 18. Limiting assembly; 1801. Assembly cavity; 1802. Lead screw; 1803. Arc-shaped pressure block; 1804. Anti-slip pad; 1805. Rotary handle; 19. Collar. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Please see Figure 1 , Figure 2 and Figure 3This embodiment of a ship odometer pressure testing fixture includes a base 1, a mounting base 2 fixedly connected to the upper surface of the base 1, a plurality of connecting rods 3 above the mounting base 2, one of the connecting rods 3 having its outer surface inserted into the inner side of the mounting base 2, a limiting component 18 inside the mounting base 2, a positioning hole 4 on the bottom surface of each connecting rod 3, two circumferentially arrayed slots 5 on the bottom surface of each connecting rod 3, a slot 6 on the inner side of each slot 5, two circumferentially arrayed connecting blocks 8 fixedly connected to the outer side of the connecting rod 3, the connecting blocks 8 fitting into the inner wall of the slot 5, the ends of the connecting blocks 8 being inserted into the inner wall of the slot 6, two sets of circumferentially arrayed locking components 7 on the inner side of each connecting rod 3, the locking components 7 including a component groove 701 on the outer side of the connecting rod 3, a moving plate 702 slidably connected to the inner side of the component groove 701, and a plug rod 704 fixedly connected to the upper surface of the moving plate 702. One end of the insertion rod 704, away from the upper surface of the moving plate 702, penetrates the inner wall of the connecting rod 3 and is inserted into the inner side of the connecting block 8. The sliding action of the moving plate 702 in the component slot 701, in conjunction with the insertion action of the insertion rod 704, realizes the automatic locking of the insertion rod 704 to the connecting block 8, forming a mechanical interlock without the need for additional manual operation. A spring 703 is fixedly connected to the bottom surface of the moving plate 702. One end of the spring 703, away from the bottom surface of the moving plate 702, is fixedly connected to the inner wall of the component slot 701. When the connecting rod 3 is inserted into the mounting base 2, the insertion rod 704 is automatically inserted into the connecting block 8 by the elastic thrust of the spring 703, thereby forming a mechanical lock without the need for additional manual operation. A positioning post 9 is fixedly connected to the upper surface of each connecting rod 3. A mounting plate 10 is provided above the mounting base 2. A hydraulic cylinder 11 is fixedly connected to the upper surface of the mounting plate 10. A sealing cover 12 is fixedly connected to the output end of the hydraulic cylinder 11.

[0027] Please see Figure 2 , Figure 3 and Figure 4The external dimensions of the positioning post 9 and the inner wall dimensions of the positioning hole 4 are matched. This matching ensures that the upper and lower connecting rods 3 are automatically aligned when inserted, eliminating installation resistance or local stress concentration caused by misalignment. At the same time, the guiding effect of the positioning post 9 keeps the multiple connecting rods 3 coaxial when stacked, preventing the overall tooling from tilting. Through the cooperation of the locking component 7 and the limiting component 18, the risk of separation caused by the lack of limiting for the plug-in connecting rod 3 is solved. Then, with the matching design of the connecting block 8 with the slot 5 and the groove 6, automatic alignment can be ensured during insertion, reducing assembly deviation. At the same time, the rotation of the connecting rod 3 after insertion allows one end of the connecting block 8 to be inserted into the groove 6. Then, the insertion locking of the locking component 7 and the active limiting of the limiting component 18 form a double constraint, preventing the connecting rod 3 from moving radially or axially after insertion, avoiding breakage or loosening. To ensure the stability of the experimental fixture, a collar 19 is fixedly connected to the bottom surface of the mounting plate 10. The outer surface of the positioning column 9 is inserted into the inner side of the collar 19. The positioning column 9 and the collar 19 are fixedly connected by bolts. The above-mentioned collar 19 and positioning column 9 are reinforced by bolts to form a rigid connection node, ensuring the stability of the mounting plate 10. The use of bolts also allows for quick disassembly and installation of the mounting plate 10, facilitating the inspection and maintenance of the components on the mounting plate 10. A pressure gauge 13 is fixedly installed on the outer surface of the sealing cover 12, and a water injection pipe 14 is fixedly installed on the inner wall of the sealing cover 12. A solenoid valve 15 is fixedly installed on the outer surface of the water injection pipe 14. The combination of the pressure gauge 13, the water injection pipe 14, and the solenoid valve 15 enables real-time monitoring and closed-loop control of the test pressure, avoiding overpressure that could cause overload deformation of the connecting rod 3 and improving the safety of the test.

[0028] Please see Figure 1 , Figure 4 and Figure 5A sealing gasket 16 is fixedly connected to the outer surface of the sealing cover 12. Four rectangular array of guide telescopic rods 17 are fixedly connected to the upper surface of the hydraulic cylinder 11, and the telescopic ends of the guide telescopic rods 17 are fixedly connected to the bottom surface of the sealing cover 12. The aforementioned sealing gasket 16 can prevent the test medium from seeping into the insertion part, causing corrosion or scaling, and improve the sealing performance during testing. Then, the guide telescopic rods 17 can limit the horizontal displacement of the sealing cover 12, ensuring that the pressure load is transmitted along the axis of the connecting rod 3, and avoiding shear damage to the insertion structure by lateral forces. The limiting component 18 includes a component cavity 1801 opened inside the mounting base 2. An arc-shaped pressure block 1803 is slidably connected to the inner wall of the component cavity 1801. One side of the arc-shaped pressure block 1803 rotates... A lead screw 1802 is dynamically connected, and the outer surface of the lead screw 1802 is threaded to the inner wall of the mounting base 2. An anti-slip pad 1804 is fixedly connected to the outer side of the arc-shaped pressure block 1803. A rotating handle 1805 is fixedly connected to the end of the lead screw 1802 away from the arc-shaped pressure block 1803. The threaded drive structure of the lead screw 1802 and the arc-shaped pressure block 1803 achieves radial pressing of the arc-shaped pressure block 1803 on the connecting rod 3 through the rotation of the rotating handle 1805, ensuring the stability of the connecting rod 3. The pressing force can be steplessly adjusted by the number of rotations to adapt to the fixing requirements of connecting rods of different diameters. At the same time, the anti-slip design of the anti-slip pad 1804 increases the contact friction and avoids slippage due to vibration after pressing, further improving the stability of the connecting rod 3.

[0029] In this embodiment, a pressure testing fixture for a ship's odometer solves the risk of separation caused by the lack of a limit on the plug-in connecting rod 3 through the cooperation of the locking component 7 and the limiting component 18. Then, with the adaptive design of the connecting block 8, the slot 5, and the groove 6, automatic alignment can be ensured during insertion, reducing assembly deviation. At the same time, after the connecting rod 3 is inserted, the rotation allows one end of the connecting block 8 to be inserted into the groove 6. Then, the insertion locking of the locking component 7 and the active limiting of the limiting component 18 form a double constraint, preventing the connecting rod 3 from moving radially or axially after insertion, avoiding breakage or loosening, and ensuring the stability of the test fixture.

[0030] The working principle of the above embodiment is as follows: First, the first connecting rod 3 is placed inside the mounting base 2. Then, the rotating handle 1805 drives the lead screw 1802 to rotate, causing the arc-shaped pressure block 1803 to move along the component cavity 1801 towards the outer wall of the connecting rod 3. The arc-shaped pressure block 1803 presses against the outer wall of the connecting rod 3 through the anti-slip surface of the anti-slip pad 1804, forming a radial constraint to ensure the stability of the connecting rod 3. If it is necessary to increase the height, the other connecting rod 3 is inserted into the first connecting rod 3. The initial positioning is achieved by the insertion and cooperation of the connecting block 8 and the slot 6. After that, when the connecting rod 3 is inserted... After rotation, the moving plate 702, under the elastic force of the spring 703, drives the insertion rod 704 to insert into the inner side of the connecting block 8 to form a mechanical latch lock, thereby achieving the stability of the splicing of multiple connecting rods 3. Then, the hydraulic cylinder 11 pushes the sealing cover 12 to rise vertically until it moves to the designated position. Under the guidance of the guide telescopic rod 17, it ensures that the pressure is transmitted along the axis of the connecting rod 3. Then, the pressure gauge 13 monitors the pressure inside the sealing cover 12 in real time. If the pressure exceeds the threshold, the medium input of the water injection pipe 14 is cut off through the solenoid valve 15 to prevent overload and ensure the safety of the test.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0032] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure testing fixture for a ship's odometer, comprising a base (1), characterized in that: A mounting base (2) is fixedly connected to the upper surface of the base (1). Multiple connecting rods (3) are provided above the mounting base (2). The outer surface of one of the connecting rods (3) is inserted into the inner side of the mounting base (2). A limiting component (18) is provided inside the mounting base (2). A positioning hole (4) is provided on the bottom surface of each connecting rod (3). Two circumferentially arranged slots (5) are provided on the bottom surface of each connecting rod (3). A slot (6) is provided on the inner side of each slot (5). A fixed connection is provided on the outer side of the connecting rod (3). Two circumferential array connecting blocks (8) are adapted to the inner wall of the slot (5). The end of the connecting block (8) is inserted into the inner wall of the slot (6). Two sets of circumferential array locking components (7) are provided on the inner side of each connecting rod (3). A positioning post (9) is fixedly connected to the upper surface of each connecting rod (3). A mounting plate (10) is provided above the mounting base (2). A hydraulic cylinder (11) is fixedly connected to the upper surface of the mounting plate (10). A sealing cover (12) is fixedly connected to the output end of the hydraulic cylinder (11).

2. The pressure testing fixture for a ship's odometer according to claim 1, characterized in that: The locking component (7) includes a component groove (701) opened on the outer side of the connecting rod (3). A movable plate (702) is slidably connected to the inner side of the component groove (701). A plug rod (704) is fixedly connected to the upper surface of the movable plate (702). One end of the plug rod (704) away from the upper surface of the movable plate (702) passes through the inner wall of the connecting rod (3) and is inserted into the inner side of the connecting block (8).

3. The pressure testing fixture for a ship's odometer according to claim 2, characterized in that: A spring (703) is fixedly connected to the bottom surface of the movable plate (702), and one end of the spring (703) away from the bottom surface of the movable plate (702) is fixedly connected to the inner wall of the component groove (701).

4. The pressure testing fixture for a ship's odometer according to claim 1, characterized in that: The external dimensions of the positioning post (9) are adapted to the inner wall dimensions of the positioning hole (4).

5. The pressure testing fixture for a ship's odometer according to claim 1, characterized in that: The bottom surface of the mounting plate (10) is fixedly connected to a collar (19), and the outer surface of the positioning post (9) is inserted into the inner side of the collar (19). The positioning post (9) and the collar (19) are fixedly connected by bolts.

6. The pressure testing fixture for a ship's odometer according to claim 1, characterized in that: A pressure gauge (13) is fixedly installed on the outer surface of the sealing cover (12), a water injection pipe (14) is fixedly installed on the inner wall of the sealing cover (12), and a solenoid valve (15) is fixedly installed on the outer surface of the water injection pipe (14).

7. The pressure testing fixture for a ship's odometer according to claim 1, characterized in that: A sealing gasket (16) is fixedly connected to the outer surface of the sealing cover (12), and four rectangular array of guide telescopic rods (17) are fixedly connected to the upper surface of the hydraulic cylinder (11), with the telescopic ends of the guide telescopic rods (17) fixedly connected to the bottom surface of the sealing cover (12).

8. The pressure testing fixture for a ship's odometer according to claim 1, characterized in that: The limiting component (18) includes a component cavity (1801) opened inside the mounting base (2). An arc-shaped pressure block (1803) is slidably connected to the inner wall of the component cavity (1801). A lead screw (1802) is rotatably connected to one side of the arc-shaped pressure block (1803), and the outer surface of the lead screw (1802) is threaded to the inner wall of the mounting base (2). An anti-slip pad (1804) is fixedly connected to the outer side of the arc-shaped pressure block (1803). A rotating handle (1805) is fixedly connected to the end of the lead screw (1802) away from the arc-shaped pressure block (1803).

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