Marine current speed governor
By introducing a buffer device into the marine current speed limiter, the vibration is reduced by using air damping force, which solves the problem of loose solder joints caused by resonance and ensures the stable connection and signal transmission of the current speed limiter.
Patent Information
- Application Number
- CN202423181025.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-23
AI Technical Summary
When the vibration frequency of a ship is close to or equal to the natural frequency of the component connection structure, it will cause resonance, resulting in large deformation of the solder joints, loosening of the solder joints, and affecting the signal transmission of the current speed limiter.
A marine current speed limiter was designed. By setting a buffer device in the slide groove, including a buffer column and a buffer hole, the vibration is reduced by air damping force, preventing the slider from deviating or jamming, and ensuring the stability and reliability of the buffering process.
It effectively absorbs and disperses vibration energy, reduces the impact of vibration on the current limiter, and ensures connection stability and signal transmission reliability.
Smart Images
Figure CN223566545U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of speed limiter, specifically is a marine current speed limiter. BACKGROUND
[0002] Marine current speed limiter usually refers to marine current isolator, and its main function is to prevent the electric corrosion problem caused by potential difference when the ship is connected with shore power, when the current in the circuit exceeds the set limit, the solid-state DC circuit breaker can detect the abnormal change of current rapidly, and cut off the circuit in very short time, thereby limiting the continuous increase of current, and protecting the ship electrical equipment from the impact of excessive current.
[0003] Its fast switching speed and accurate control ability can respond in time when the current overload, and effectively prevent the expansion of fault.
[0004] When approaching the wharf for berthing operation, the ship needs to control the speed and direction accurately, however, due to the influence of factors such as water flow and wind direction, collision may occur between the ship and the wharf, and the vibration of the ship in the collision has a certain frequency range, and the element connection structure inside the current speed limiter also has its own natural frequency, when the frequency of the ship vibration approaches or equals the natural frequency of the element connection structure, resonance phenomenon will occur, and in the resonance state, the deformation amplitude of the welding point will greatly increase, and the repeated deformation of the welding point will cause the metal fatigue of the welding point, resulting in the loosening of the welding point, which will affect the signal transmission of the current speed limiter.
[0005] Therefore, the marine current speed limiter is provided for the above problems. UTILITY MODEL CONTENTS
[0006] The utility model discloses a kind of marine current speed limiter, to solve the problem that when the frequency of ship vibration approaches or equals the natural frequency of element connection structure, resonance phenomenon will occur, and in the resonance state, the deformation amplitude of the welding point will greatly increase, and the repeated deformation of the welding point will cause the metal fatigue of the welding point, resulting in the loosening of the welding point, which will affect the signal transmission of the current speed limiter.
[0007] To achieve the above object, the utility model provides the following technical scheme:
[0008] The utility model provides a marine current speed limiter, including speed limiter and connecting terminal, one side of speed limiter is fixedly connected with connecting terminal through welding, the upper protection shell is installed to the outside of speed limiter, the connecting bolt is spirally connected to the lower end of upper protection shell, the lower protection shell is spirally connected to the lower end of connecting bolt, the lower protection shell outside is equipped with the sliding slot, and the fixed device is fixedly connected in the sliding slot inside, the fixed device includes base, the fixed bolt is spirally connected in the base inside, the connecting column is fixedly connected to the upper end of base, the connecting column is fixedly connected with the sliding block through the lower protection shell, the buffer device is fixedly connected to the lower end of sliding block, and the buffer device lower extreme is fixedly connected with the bottom of sliding slot, the buffer device includes guide column, the buffer hole is equipped with in the guide column inside, the support piece is fixedly connected in the guide column inside, the buffer column is slidably connected in the buffer hole inside, the air -permeable groove is equipped with in the buffer column outside, and the air -permeable groove bottom is equipped with the air -permeable hole.
[0009] As the further optimization of the utility model, the speed limiter is installed inside the upper protection shell and the lower protection shell, the upper protection shell and the lower protection shell are symmetrically arranged, and the upper protection shell and the lower protection shell are fixedly connected through the connecting bolt.
[0010] As the further optimization of the utility model, the sliding slot and the fixed device are all provided with four, the sliding slot and the fixed device are all arranged on the outside of the lower protection shell, the sliding slot and the fixed device are one-to-one corresponding, and the sliding slot and the fixed device are all arranged at the four corners of the lower protection shell.
[0011] As the further optimization of the utility model, the sliding block is slidably connected with the sliding slot inside, the connecting column is slidably connected with the lower protection shell outside, the buffer device is provided with two, the buffer device is symmetrically arranged at both ends of the sliding block, and the buffer device is perpendicular to the bottom of the sliding block.
[0012] As the further optimization of the utility model, the guide column bottom is fixedly connected with the sliding slot bottom, the buffer hole and the buffer column cross section shape are pentagonal, the buffer hole and the buffer column cross section shape are equal, and the support piece is arranged in the shape of a ring.
[0013] As the further optimization of the utility model, the air -permeable groove is provided with a plurality of, the air -permeable groove is evenly and equidistantly arranged on the outside of the buffer column, the air -permeable groove cross section shape is square, the air -permeable groove is distributed according to the circumferential array, and the air -permeable groove is arranged at the position of nine tenths of the buffer column.
[0014] As the further optimization of the utility model, wherein: the air vent is provided with several, the air vent passes through the buffer column bottom, the air vent shape is cylindrical, the air vent is distributed in the buffer column inside according to the circumferential array, the air vent upper end is communicated with the air vent groove, the air vent is arranged in the position of buffer column lower end tenth.
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] In the utility model, when the ship vibration makes the sliding block slide in the sliding groove, the buffer column moves in the buffer hole, the air in the buffer hole is compressed and discharged, the damping force generated can effectively slow down the moving speed of the sliding block, thereby absorbing and dispersing the vibration energy, reducing the influence of vibration on the current speed limiter, the existence of the supporting sheet helps to maintain the correct position of the buffer column in the buffer hole, prevents the buffer column from deviating or being stuck during sliding, and ensures the stability and reliability of the buffering process. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the overall structure schematic diagram of the utility model;
[0018] Figure 2 It is the speed limiter installation position structure schematic diagram of the utility model;
[0019] Figure 3 It is the upper protective shell structure schematic diagram of the utility model;
[0020] Figure 4 It is the overall structure schematic diagram of the utility model fixing device;
[0021] Figure 5 It is the guide column cross section structure schematic diagram of the utility model;
[0022] Figure 6 It is the air vent installation position structure schematic diagram of the utility model.
[0023] In the drawing: 1, speed limiter;2, connecting terminal;3, upper protective shell;4, lower protective shell;5, connecting bolt;6, sliding groove;
[0024] 7, fixing device;71, base;72, fixing bolt;73, connecting column;74, sliding block;75, buffer device;751, guide column;752, buffer hole;753, supporting sheet;754, buffer column;755, air vent groove;756, air vent. DETAILED DESCRIPTION
[0025] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0026] It is to be noted that the terms used herein are merely for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.
[0027] Please refer to Figures 1-6 The present application provides a technical scheme:
[0028] A marine current speed limiter, comprising a speed limiter 1 and a connecting terminal 2, the speed limiter 1 is fixedly connected with the connecting terminal 2 on one side by welding, an upper protective shell 3 is installed on the outer side of the speed limiter 1, a connecting bolt 5 is screw-connected to the lower end of the upper protective shell 3, a lower protective shell 4 is screw-connected to the lower end of the connecting bolt 5, a sliding groove 6 is formed on the outer side of the lower protective shell 4, and a fixing device 7 is fixedly connected to the inner side of the sliding groove 6; the fixing device 7 comprises a base 71, a fixing bolt 72 is screw-connected to the inside of the base 71, a connecting column 73 is fixedly connected to the upper end of the base 71, the connecting column 73 is fixedly connected with a sliding block 74 through the lower protective shell 4, a buffer device 75 is fixedly connected to the lower end of the sliding block 74, and the lower end of the buffer device 75 is fixedly connected with the bottom of the sliding groove 6; the buffer device 75 comprises a guide column 751, a buffer hole 752 is formed in the inside of the guide column 751, a supporting piece 753 is fixedly connected to the inside of the guide column 751, a buffer column 754 is slidably connected to the inside of the buffer hole 752, a ventilation groove 755 is formed on the outer side of the buffer column 754, and a ventilation hole 756 is formed in the bottom of the ventilation groove 755.
[0029] As a further embodiment of the above technical scheme: four sliding grooves 6 and four fixing devices 7 are arranged, the sliding grooves 6 and the fixing devices 7 are arranged on the outer side of the lower protective shell 4, the sliding grooves 6 and the fixing devices 7 are one-to-one corresponding, the sliding grooves 6 and the fixing devices 7 are arranged at the four corners of the lower protective shell 4, and the sliding grooves 6 provide sliding tracks for the sliding blocks 74, so that the sliding blocks 74 can only move in a specific direction when subjected to vibration, thereby playing a guiding role.
[0030] As a further implementation of the above technical solution: the air vent hole 756 is provided with a plurality of air vent holes 756 penetrating the bottom of the buffer column 754, the shape of the air vent hole 756 is cylindrical, the air vent hole 756 is distributed in the inside of the buffer column 754 in a circumferential array, the upper end of the air vent hole 756 is communicated with the air vent groove 755, the air vent hole 756 is arranged at the position of one tenth of the lower end of the buffer column 754, the air vent hole 756 penetrates the bottom of the buffer column 754, when the buffer column 754 moves, air can orderly enter and exit the buffer hole 752 through the air vent groove 755 and the air vent hole 756, the air damping effect is enhanced, and the buffering performance is further improved.
[0031] As a further implementation of the above technical solution: the speed limiter 1 is installed inside the upper protective shell 3 and the lower protective shell 4, the upper protective shell 3 and the lower protective shell 4 are symmetrically arranged up and down, the upper protective shell 3 and the lower protective shell 4 are fixedly connected through the connecting bolt 5, the current limiter 1 is wrapped by the upper protective shell 3 and the lower protective shell 4, which can effectively prevent impurities such as dust and water vapor from entering from the outside, avoid damage to the current limiter 1 caused by external environmental factors, and ensure normal work;
[0032] As a further implementation of the above technical solution: the bottom of the guide column 751 is fixedly connected with the bottom of the sliding groove 6, the cross section of the buffer hole 752 and the buffer column 754 is pentagonal, the cross section of the buffer hole 752 and the buffer column 754 is equal in size, the support piece 753 is arranged in a ring shape, and the shape of the buffer column 754 and the buffer hole 752 makes the buffer column 754 not easy to separate from the buffer hole 752 during sliding, thereby ensuring the stability and reliability of the buffer;
[0033] As a further implementation of the above technical solution: the outer side of the sliding block 74 is slidably connected with the inner side of the sliding groove 6, the outer side of the connecting column 73 is slidably connected with the lower protective shell 4, the buffer device 75 is provided with two buffer devices 75, the buffer devices 75 are symmetrically arranged at both ends of the sliding block 74, the buffer devices 75 are perpendicular to the bottom of the sliding block 74, and the buffer devices 75 can generate air damping when the sliding block 74 moves, effectively slowing down the moving speed of the sliding block 74, thereby absorbing and dispersing vibration energy and reducing the influence of vibration on the current limiter 1;
[0034] As a further implementation of the above technical solution: the air vent groove 755 is provided with a plurality of air vent grooves 755, the air vent grooves 755 are evenly and equidistantly arranged on the outer side of the buffer column 754, the cross section of the air vent groove 755 is square, the air vent groove 755 is distributed in a circumferential array, and the air vent groove 755 is arranged at the position of nine tenths of the buffer column 754, when the buffer column 754 moves, air can orderly enter and exit the buffer hole 752 through the air vent groove 755 and the air vent hole 756, the air damping effect is enhanced, and the buffering performance is further improved.
[0035] Workflow: First, when installing the current limiter 1, first install the limiter 1 inside the upper protective shell 3 and the lower protective shell 4, and then fix and connect the upper protective shell 3 and the lower protective shell 4 by connecting the bolts 5, then place the base 71 at the appropriate installation position, and then rotate the fixing bolts 72 to screw into the inside of the base 71, thereby firmly fixing the base 71 on the installation plane, the connecting column 73 is arranged to connect the base 71 and the sliding block 74, so that the sliding block 74 can slide up and down in the sliding groove 6, when the equipment where the current limiter 1 is located is shaken, the lower protective shell 4 will displace, because the sliding block 74 is connected with the sliding groove 6, the sliding block 74 will move in the sliding groove 6, the movement of the sliding block 74 will drive the buffer device 75 connected to the lower end of the sliding block 74, the buffer column 754 of the buffer device 75 slides in the buffer hole 752 of the guide column 751, in the sliding process of the buffer column 754, because of the existence of the supporting piece 753, the air in the buffer hole 752 will enter and exit through the air vent groove 755 on the outside of the buffer column 754 and the air vent hole 756 at the bottom, producing a damping effect, when the sliding block 74 moves quickly, the buffer column 754 quickly compresses the air in the buffer hole 752, and the resistance generated by the air can slow down the moving speed of the sliding block 74, thereby effectively absorbing and dispersing the vibration energy, reducing the influence of vibration on the current limiter 1, protecting the connection stability and signal transmission stability of the internal elements of the current limiter 1, the shape of the buffer column 754 and the buffer hole 752 is arranged, so that the buffer column 754 will not easily separate from the buffer hole 752 in the sliding process, ensuring the stability and reliability of the buffer.
[0036] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A marine current limiter comprising a limiter (1) and a connection terminal (2), characterized in that: The speed limiter (1) is fixedly connected with a connecting terminal (2) on one side by welding, an upper protective shell (3) is installed on the outer side of the speed limiter (1), a connecting bolt (5) is screw-connected to the lower end of the upper protective shell (3), a lower protective shell (4) is screw-connected to the lower end of the connecting bolt (5), and a sliding groove (6) is formed in the outer side of the lower protective shell (4). The fixing device (7) comprises a base (71), a fixing bolt (72) is screw-connected inside the base (71), a connecting column (73) is fixedly connected to the upper end of the base (71), the connecting column (73) is fixedly connected with a sliding block (74) through the lower protective shell (4), a buffer device (75) is fixedly connected to the lower end of the sliding block (74), and the lower end of the buffer device (75) is fixedly connected with the bottom of the sliding groove (6). The buffer device (75) comprises a guide column (751), a buffer hole (752) is formed in the guide column (751), a supporting piece (753) is fixedly connected inside the guide column (751), a buffer column (754) is slidably connected inside the buffer hole (752), air grooves (755) are formed in the outer side of the buffer column (754), and air holes (756) are formed in the bottom of the air grooves (755).
2. A current limited rheostat for a marine vessel according to claim 1, characterised in that: The speed limiter (1) is installed inside the upper protective shell (3) and the lower protective shell (4), the upper protective shell (3) and the lower protective shell (4) are symmetrically arranged, and the upper protective shell (3) and the lower protective shell (4) are fixedly connected through the connecting bolt (5).
3. A current limited rheostat for a marine vessel as claimed in claim 1 wherein: The sliding groove (6) and the fixing device (7) are both provided with four, the sliding groove (6) and the fixing device (7) are both arranged on the outer side of the lower protective shell (4), the sliding groove (6) and the fixing device (7) are one-to-one corresponding, and the sliding groove (6) and the fixing device (7) are both arranged at the four corners of the lower protective shell (4).
4. A current limited rheostat for a marine vessel according to claim 1, characterised in that: The sliding block (74) is slidably connected with the inner side of the sliding groove (6), the connecting column (73) is slidably connected with the lower protective shell (4), the buffer device (75) is provided with two, the buffer device (75) is symmetrically arranged at both ends of the sliding block (74), and the buffer device (75) is perpendicular to the bottom of the sliding block (74).
5. A current limited speed controller for a marine vessel as claimed in claim 1, characterised in that: The bottom of the guide column (751) is fixedly connected with the bottom of the sliding groove (6), the buffer hole (752) and the buffer column (754) are pentagonal in cross-section, the buffer hole (752) and the buffer column (754) are equal in size, and the supporting piece (753) is annular.
6. A current limited speed controller for a marine vessel as claimed in claim 1, characterised in that: The air grooves (755) are provided with a plurality of, the air grooves (755) are evenly and equidistantly arranged on the outer side of the buffer column (754), the air grooves (755) are square in cross-section, the air grooves (755) are distributed in a circumferential array, and the air grooves (755) are arranged at a position of 90% of the buffer column (754).
7. A current limited speed controller for a marine vessel as claimed in claim 1, wherein: The air vent (756) is provided with several air vents (756) passing through the bottom of the buffer column (754), the shape of the air vent (756) is cylindrical, the air vent (756) is distributed in the inside of the buffer column (754) in a circumferential array, the upper end of the air vent (756) is communicated with the air vent groove (755), and the air vent (756) is arranged at the position of the lower tenth of the buffer column (754).