Marine charging device with automatic tension adjustment

Abstract

This application relates to the technical field of ship charging, and in particular to a marine charging device with automatic tension adjustment. The device includes a telescopic arm with a cable mounted on it. The cable includes a charging head for connection to the ship. The telescopic arm comprises a main arm and a secondary arm, which are hinged together. A connecting frame is located at the end of the secondary arm, and the charging head is located within the connecting frame. A guide frame is located at the end of the main arm near the secondary arm. A support roller is rotatably connected to the guide frame. Several support wheels for supporting the cable are mounted on the support roller. A pressure roller is mounted on the guide frame, and a pressure wheel is coaxially connected to the pressure roller. The cable is clamped between the pressure wheel and the support wheel. A sensor for monitoring tension is installed on the cable. An adjusting motor is installed on the support roller, and the adjusting motor is electrically connected to the sensor via a controller. Through the sensor and adjusting motor, the cable tension is monitored in real time and adjusted by unwinding the support wheels to prevent excessive tension from affecting its service life.

Description

Technical Field

[0001] This application relates to the technical field of ship charging, and in particular to a ship charging device that automatically adjusts tension. Background Technology

[0002] Port service vessels are a general term for ships that specialize in port operations. Currently, in order to save port costs and reduce pollution from harmful substances, many port service vessels have changed from refueling to generate electricity after docking to charging via onshore charging devices.

[0003] Traditional marine charging equipment is bulky and typically uses a fixed power source at the dock with a long charging cable pre-installed on it. The ship is then connected to the power source for charging. During charging, the ship's movement in the water causes the cable to sway, pulling and causing fluctuations in cable tension, which affects the cable's lifespan. Summary of the Invention

[0004] To improve the service life of cables, this application provides a marine charging device with automatic tension adjustment.

[0005] The marine charging device with automatic tension adjustment provided in this application adopts the following technical solution:

[0006] A marine charging device with automatic tension adjustment includes a telescopic arm with a cable mounted on it. The cable includes a charging head for connection to a ship. The telescopic arm includes a main arm and a secondary arm, which are hinged together. A connecting frame is provided at the end of the secondary arm, and the charging head is located within the connecting frame. The end of the cable away from the charging head is located at the end of the main arm away from the secondary arm. A guide frame is provided at the end of the main arm near the secondary arm. A support roller is rotatably connected to the guide frame. Several support wheels for supporting the cable are provided on the support roller. The guide frame has a number of clamping rollers matching the number of cables. Each clamping roller corresponds to a cable and is coaxially connected to a clamping wheel. The cable is clamped between the clamping wheel and the support wheel. A sensor for monitoring the cable tension is installed on the cable located between the guide frame and the connecting frame. An adjusting motor is installed on the support roller, and the adjusting motor is electrically connected to the sensor via a controller.

[0007] By adopting the above technical solution, the telescopic arm can adjust the cable length through extension and retraction, thereby enabling charging of ships of different sizes and positions. After the charging head is plugged into the ship, the clamping roller and support roller clamp the cable, thus fixing the cable located at the guide frame. At this time, the charging head at the cable end is connected and fixed to the ship, the cable at the guide frame is clamped and fixed by the clamping roller and support roller, and the cable between the guide frame and the connecting frame is in a taut state. When the ship rocks, it will pull on this part of the cable, thus increasing the tension of this part of the cable. The sensor monitors the tension of this part of the cable. When the increased tension is detected, a signal is sent to the controller. The controller drives the adjustment motor to start, and the adjustment motor drives the support roller and support wheel to rotate, thereby gradually unwinding the cable, changing the length and tension of the cable between the guide frame and the connecting frame, thus reducing its tension. Through the setting of the sensor and the adjustment motor, the cable tension is monitored in real time and adjusted by the support roller to prevent excessive tension from affecting its service life.

[0008] Preferably, the clamping wheel is provided with limiting plates on both sides, the diameter of the limiting plates is larger than the diameter of the clamping wheel, and the support wheel is embedded between the two limiting plates.

[0009] By adopting the above technical solution, the support wheel rotates between two limiting plates. The limiting plates restrict the position of the support wheel to prevent it from moving axially and deviating.

[0010] Preferably, the pressing roller is fixedly connected to the guide frame, the pressing wheel is rotatably connected to the pressing roller, and the limiting plate is fixedly connected to the pressing roller.

[0011] By adopting the above technical solution, the limiting plate and the pressure roller are fixed on the guide frame, which improves the overall stability.

[0012] Preferably, the inner wall of the limiting plate is slidably connected with a limiting pin pointing to the support wheel. The limiting pin slides along the axial direction of the limiting plate. The outer wall of the support wheel is provided with a plurality of limiting holes that match the limiting pin. The limiting holes are distributed in a ring on the outer wall of the support wheel.

[0013] By adopting the above technical solution, when the cable tension is not high, the support wheel and the clamping wheel need to clamp and fix the cable to prevent it from moving on its own. At this time, the limit pin is inserted into the limit hole, thereby locking the support wheel. The support wheel cannot rotate on its own, changing the rolling friction between the cable and the support wheel into sliding friction, increasing the friction between the cable and the support wheel, and thus reducing the possibility of the cable moving on its own.

[0014] Preferably, a control rod is rotatably connected inside the pressing roller, and a limiting rod perpendicular to the control rod is rotatably connected inside the limiting plate. The upper end of the limiting rod is connected to the control rod through a bevel gear pair, and the lower end of the limiting rod is coaxially connected to a limiting gear. A limiting tooth groove that meshes with the limiting gear is provided on the limiting pin. A control motor for driving the control rod to rotate is provided at the end of the pressing roller, and the control motor is electrically connected to a sensor through a controller.

[0015] By employing the above technical solution, when the cable tension is high, the sensor sends a signal to the controller, which then sends commands to the control motor and the adjusting motor. The control motor starts first, driving the control lever to rotate. The control lever then drives the limit lever to rotate, thereby driving the limit pin to slide away from the limit hole via the limit gear. The limit pin then disengages from the limit hole. The adjusting motor then starts, causing the support roller and support wheel to rotate, unwinding the cable and reducing its tension.

[0016] Preferably, the inner wall of the limiting plate is slidably connected to a fixing pin that is parallel to the limiting pin and points towards the pressing wheel. The outer wall of the pressing wheel is provided with a plurality of fixing holes that match the fixing pin. The fixing holes are distributed in a ring on the outer wall of the pressing wheel. The limiting rod is coaxially connected to a fixing gear. The fixing pin is provided with a fixing tooth groove that meshes with the fixing gear.

[0017] By adopting the above technical solution, the limiting pin restricts the rotation of the support wheel, and the fixing pin restricts the rotation of the clamping wheel. The two work together to further restrict the cable and prevent it from moving on its own.

[0018] Preferably, the clamping wheel and the support wheel are provided with intermeshing synchronous tooth grooves.

[0019] By adopting the above technical solution, when the support wheel rotates, the pressure wheel is driven to rotate synchronously through the synchronous tooth groove, so that the two rotate synchronously and the stability of cable unwinding is guaranteed.

[0020] Preferably, the guide frame is provided with a plurality of guide rollers, which are distributed in an arc shape, and a plurality of guide wheels are coaxially provided on the guide rollers, with the guide wheels located below the cable.

[0021] By adopting the above technical solution, the guide roller guides the direction of the cable, which facilitates the unwinding and rewinding of the cable.

[0022] In summary, this application includes the following beneficial technical effects:

[0023] 1. Through the settings of sensors and adjusting motors, the tension of the cable is monitored in real time and adjusted by the support wheel to prevent excessive tension from affecting its service life. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the embodiment;

[0025] Figure 2 This is a schematic diagram of the connection between the pressure wheel and the support wheel in the embodiment.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Telescopic boom; 11. Main boom; 12. Forearm; 13. Connecting frame; 2. Cable; 21. Charging head; 3. Guide frame; 4. Support roller; 41. Support wheel; 411. Limiting hole; 42. Adjusting motor; 5. Pressure roller; 51. Pressure wheel; 511. Fixing hole; 52. Limiting plate; 61. Control rod; 62. Limiting rod; 63. Limiting gear; 64. Limiting pin; 65. Control motor; 66. Fixing pin; 67. Fixing gear; 7. Guide roller; 71. Guide wheel. Detailed Implementation

[0028] The present application will now be described in further detail with reference to all accompanying drawings.

[0029] Example

[0030] This application discloses a marine charging device that automatically adjusts tension, referring to... Figure 1 The system includes a telescopic arm 1 and a cable 2. The telescopic arm 1 includes a large arm 11 and a small arm 12. The large arm 11 is freely telescopic. The small arm 12 is hinged to the end of the large arm 11 and can rotate around the end of the large arm 11, thereby adjusting the height of the small arm 12. A connecting frame 13 is provided at the end of the small arm 12 away from the large arm 11. The cable 2 includes a charging head 21 located at the connecting frame 13 for connection to the vessel, and the other end of the cable 2 extends from the end of the large arm 11 away from the small arm 12 for connection to an external power source.

[0031] Reference Figure 1 A guide frame 3 is fixed to the end of the upper arm 11 near the lower arm 12. Several guide rollers 7 arranged in an arc shape are rotatably connected to the guide frame 3. Several guide wheels 71 are coaxially connected to the guide rollers 7. The number of guide wheels 71 on a single guide roller 7 is the same as the number of cables 2, and the guide wheels 71 correspond one-to-one with the cables 2. The cables 2 are located above the guide wheels 71, and the guide wheels 71 support the cables 2. Support rollers 4, with the same number of cables 2, are rotatably connected to the guide frame 3. Several support wheels 41 for supporting the cables 2 are provided on the support rollers 4, and the support wheels 41 correspond one-to-one with the cables 2.

[0032] Reference Figure 1The guide frame 3 is equipped with a number of clamping rollers 5, the same number as the number of cables 2, located above the support rollers 4. Each clamping roller 5 has a clamping wheel 51, and the cables 2 are clamped between the clamping wheel 51 and the support wheel 41. The clamping wheel 51 and the support wheel 41 have meshing synchronous tooth grooves. A sensor for monitoring the tension of the cables 2 is installed on the cables 2 located between the guide frame 3 and the connecting frame 13. An adjusting motor 42 is installed on the support rollers 4, and the adjusting motor 42 is electrically connected to the sensor via a controller.

[0033] Reference Figure 1 When the sensor detects that the tension of cable 2 is too high, it sends a signal to the controller, which then sends a command to the regulating motor 42. The regulating motor 42 drives the support roller 4 and the support wheel 41 to rotate, thereby unwinding the cable 2 and reducing its tension.

[0034] Reference Figure 1 and Figure 2 The pressure roller 5 is fixed to the guide frame 3, and the pressure wheel 51 is rotatably connected to the pressure roller 5. Limiting plates 52, fixedly connected to the pressure roller 5, are provided on both sides of the pressure wheel 51. The diameter of the limiting plates 52 is larger than the diameter of the pressure wheel 51, and the lower end of the limiting plates 52 is located outside the support wheel 41. The support wheel 41 is embedded between the two limiting plates 52. The limiting plates 52 limit the support wheel 41 to prevent axial movement during rotation.

[0035] Reference Figure 1 and Figure 2 The inner wall of the limiting plate 52 has two sliding holes parallel to the pressure roller 5. A fixing pin 66 and a limiting pin 64 are slidably connected in the two sliding holes, respectively. The fixing pin 66 points towards the pressure roller 51, and the limiting pin 64 points towards the support roller 41.

[0036] Reference Figure 1 and Figure 2 The outer side wall of the pressure roller 51 has several fixing holes 511 that match the fixing pins 66, arranged in a ring on the outer side wall of the pressure roller 51. When the fixing pins 66 are inserted into the fixing holes 511, the pressure roller 51 is locked and cannot rotate. When the fixing pins 66 are pulled out of the fixing holes 511, the pressure roller 51 is released and can rotate on its own.

[0037] Reference Figure 1 and Figure 2 The outer side wall of the support wheel 41 is provided with several limiting holes 411 that cooperate with the limiting pin 64. The limiting holes 411 are arranged in a ring on the outer side wall of the support wheel 41. When the limiting pin 64 is inserted into the limiting hole 411, the support wheel 41 is locked and cannot rotate. When the limiting pin 64 is pulled out from the limiting hole 411, the support wheel 41 is released and can rotate on its own.

[0038] Reference Figure 1 and Figure 2 A control rod 61 is rotatably connected inside the pressure roller 5. A control motor 65 for driving the control rod 61 to rotate is installed at the end of the pressure roller 5. The control motor 65 is electrically connected to the sensor through a controller. A limit rod 62 perpendicular to the control rod 61 is rotatably connected inside the limit plate 52. The upper end of the limit rod 62 is inserted into the pressure roller 5 and connected to the control rod 61 through a bevel gear pair. A fixed gear 67 and a limit gear 63 are coaxially connected to the lower end of the limit rod 62. A limit pin 64 has a limit tooth groove that meshes with the limit gear 63, and a fixed pin 66 has a fixed tooth groove that meshes with the fixed gear 67.

[0039] The implementation principle of the marine charging device with automatic tension adjustment according to an embodiment of this application is as follows: When the tension of the cable 2 is large, the sensor sends a signal to the controller, and the controller sends instructions to the control motor 65 and the adjustment motor 42. The control motor 65 starts first, driving the control rod 61 to rotate. The control rod 61 drives the limit rod 62 to rotate, and the fixed gear 67 and the limit gear 63 rotate synchronously. At this time, the limit pin 64 and the fixed pin 66 slide and disengage from the limit hole 411 and the fixed hole 511 respectively, and the support wheel 41 and the pressure wheel 51 are released. The adjustment motor 42 starts again, and the support roller 4 and the support wheel 41 rotate to unwind the cable 2 and reduce its tension.

[0040] When the tension of cable 2 decreases, the sensor sends a signal to the controller, which then sends commands to the control motor 65 and the adjusting motor 42. The adjusting motor 42 stops first, and the support wheel 41 stops rotating. The control motor 65 restarts and rotates in the opposite direction, driving the control lever 61 to rotate. This, in turn, causes the fixing pin 66 and the limiting pin 64 to gradually extend through the limiting lever 62 until the fixing pin 66 is inserted into the fixing hole 511 and the limiting pin 64 is inserted into the limiting hole 411. At this point, the support wheel 41 and the pressure wheel 51 are locked. This changes the rolling friction between cable 2 and the support wheel 41 and the pressure wheel 51 into sliding friction, increasing the friction between cable 2 and the support wheel 41 and the pressure wheel 51, thereby reducing the possibility of cable 2 moving on its own.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A marine charging device with automatic tension adjustment, comprising a telescopic arm (1), wherein a cable (2) is provided on the telescopic arm (1), the cable (2) including a charging head (21) for connection with a ship, characterized in that: The telescopic arm (1) includes a large arm (11) and a small arm (12), which are hinged together. A connecting frame (13) is provided at the end of the small arm (12), and the charging head (21) is located inside the connecting frame (13). The end of the cable (2) away from the charging head (21) is located at the end of the large arm (11) away from the small arm (12). A guide frame (3) is provided at the end of the large arm (11) near the small arm (12), and a support roller (4) is rotatably connected to the guide frame (3). The support roller (4) is provided with several supports for the cable. (2) The support wheel (41) is provided on the guide frame (3), and the number of pressure rollers (5) is the same as the number of cables (2). The pressure rollers (5) correspond one-to-one with the cables (2) and are all coaxially connected to the pressure rollers (51). The cables (2) are clamped between the pressure rollers (51) and the support wheel (41). A sensor for monitoring the tension of the cables (2) is installed on the cables (2) located between the guide frame (3) and the connecting frame (13). An adjusting motor (42) is installed on the support roller (4). The adjusting motor (42) is electrically connected to the sensor through a controller. The pressing wheel (51) is provided with limiting plates (52) on both sides. The diameter of the limiting plates (52) is larger than the diameter of the pressing wheel (51). The support wheel (41) is embedded between the two limiting plates (52). The pressing roller (5) is fixedly connected to the guide frame (3), the pressing wheel (51) is rotatably connected to the pressing roller (5), and the limiting plate (52) is fixedly connected to the pressing roller (5). The inner wall of the limiting plate (52) is slidably connected to a limiting pin (64) pointing to the support wheel (41). The limiting pin (64) slides along the axial direction of the limiting plate (52). The outer wall of the support wheel (41) is provided with a plurality of limiting holes (411) that match the limiting pin (64). The limiting holes (411) are distributed in a ring on the outer wall of the support wheel (41). A control rod (61) is rotatably connected inside the pressing roller (5), and a limiting rod (62) perpendicular to the control rod (61) is rotatably connected inside the limiting plate (52). The upper end of the limiting rod (62) is connected to the control rod (61) through a bevel gear pair, and the lower end of the limiting rod (62) is coaxially connected to a limiting gear (63). A limiting tooth groove that meshes with the limiting gear (63) is opened on the limiting pin (64). A control motor (65) for driving the control rod (61) to rotate is provided at the end of the pressing roller (5). The control motor (65) is electrically connected to the sensor through a controller. The inner wall of the limiting plate (52) is slidably connected to a fixing pin (66) that is parallel to the limiting pin (64) and points towards the pressing wheel (51). The outer wall of the pressing wheel (51) is provided with a plurality of fixing holes (511) that match the fixing pin (66). The fixing holes (511) are distributed in a ring on the outer wall of the pressing wheel (51). The limiting rod (62) is coaxially connected to a fixing gear (67). The fixing pin (66) is provided with a fixing tooth groove that meshes with the fixing gear (67).

2. The marine charging device with automatic tension adjustment according to claim 1, characterized in that: The pressing wheel (51) and the support wheel (41) are provided with intermeshing synchronous tooth grooves.

3. The marine charging device with automatic tension adjustment according to claim 1, characterized in that: The guide frame (3) is provided with a number of guide rollers (7), which are arranged in an arc shape. A number of guide wheels (71) are coaxially provided on the guide rollers (7), and the guide wheels (71) are located below the cable (2).

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