Marine charging device capable of automatically adjusting tensile force

Abstract

The invention relates to the technical field of ship charging, in particular to a ship charging device capable of automatically adjusting tensile force, which comprises a telescopic arm, a cable is arranged on the telescopic arm, the cable comprises a charging head connected with a ship, the telescopic arm comprises a large arm and a small arm, the large arm is hinged to the small arm, and a connecting frame is arranged at the end part of the small arm. The charging head is located in the connecting frame, the end, close to the small arm, of the large arm is provided with a guide frame, the guide frame is rotationally connected with a supporting roller, the supporting roller is provided with a plurality of supporting wheels used for supporting a cable, the guide frame is provided with a pressing roller, the pressing roller is coaxially connected with a pressing wheel, and the cable is clamped between the pressing wheel and the supporting wheels. A sensor used for monitoring the tensile force is installed on the cable, an adjusting motor is installed on the supporting roller, and the adjusting motor is electrically connected with the sensor through a controller. And through the arrangement of a sensor and an adjusting motor, the tensioning force of the cable is monitored in real time, unwinding adjustment is conducted through a supporting wheel, and the situation that the service life of the cable is affected due to the fact that the tensioning force is too large is prevented.

Description

Technical Field

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

[0002] Harbor vessels are a general term for ships that specialize in port work. In order to save port costs and reduce pollution from harmful substances, many harbor vessels have switched from adding fuel to generate electricity to charging through onshore charging devices after docking.

[0003] Traditional marine charging equipment is bulky and typically requires a fixed power source at the dock, with a long cable reserved for connecting the vessel to the power source. During charging, the vessel's movement in the water can cause strain on the cable, causing fluctuations in cable tension and shortening its lifespan. Summary of the Invention

[0004] In order to increase the service life of the cable, the present application provides a marine charging device that automatically adjusts the tension.

[0005] The present application provides a marine charging device that automatically adjusts tension, which adopts the following technical solutions:

[0006] The cable is clamped between the pressure wheel and the support wheel, and a sensor for monitoring the tension of the cable is installed on the cable between the guide frame and the connecting frame, and an adjusting motor is installed on the supporting roller, and the adjusting motor is electrically connected to the sensor through a controller.

[0007] By employing the above technical solution, the telescopic arm can adjust the cable length by extending and retracting, enabling charging of vessels of varying sizes and locations. After the charging head is plugged into the vessel, the pinch roller and support roller compress the cable, securing it at the guide frame. At this point, the charging head at the cable end is connected to the vessel and secured, while the cable at the guide frame is compressed and secured by the pinch roller and support roller. The cable between the guide frame and the connecting frame is in a taut state. When the vessel sways, this section of the cable is pulled, increasing the tension in that section. A sensor monitors the tension in this section of the cable. When it detects increased tension, it sends a signal to a controller, which activates an adjustment motor. This motor activates the support rollers and support rollers, gradually unwinding the cable, changing the length and tension of the cable between the guide frame and the connecting frame, thereby reducing its tension. Through the configuration of the sensor and adjustment motor, cable tension is monitored in real time and adjusted by the support rollers during unwinding, preventing excessive tension that could affect its service life.

[0008] Preferably, limiting plates are provided on both sides of the pressure wheel, the diameter of the limiting plates is larger than the diameter of the pressure wheel, and the supporting wheel is embedded between the two limiting plates.

[0009] By adopting the above technical solution, the support wheel is located and rotated between the two limit plates, and the limit plates limit the position of the support wheel to prevent the support wheel from axial movement and deviation.

[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 pressing roller are fixed on the guide frame to improve the overall stability.

[0012] Preferably, the inner wall of the limit plate is slidably connected to a limit pin pointing to the support wheel, and the limit pin slides axially along the limit plate. The outer wall of the support wheel is provided with a plurality of limit holes matching the limit pin, and the limit holes are distributed in a ring shape 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 pressure wheel need to compress and fix the cable to prevent it from moving. At this time, the limit pin is inserted into the limit hole, thereby locking the support wheel, preventing the support wheel from rotating. The rolling friction between the cable and the support wheel is converted into sliding friction, increasing the friction between the cable and the support wheel, thereby reducing the possibility of cable movement.

[0014] Preferably, a control rod is rotatably connected inside the pressure roller, a limit rod perpendicular to the control rod is rotatably connected inside the limit plate, the upper end of the limit rod is connected to the control rod through a bevel gear pair, the lower end of the limit rod is coaxially connected to the limit gear, the limit pin is provided with a limit tooth groove meshing with the limit gear, the end of the pressure roller is provided with a control motor for driving the control rod to rotate, and the control motor is electrically connected to the sensor through a controller.

[0015] With this technical solution, when the cable tension is high, the sensor sends a signal to the controller, which in turn sends instructions to the control motor and the regulating motor. The control motor starts first, driving the control lever to rotate, which in turn rotates the limit lever, which in turn drives the limit pin via the limit gear to slide away from the limit hole, causing the limit pin to disengage from the limit hole. The regulating motor then starts again, rotating the support roller and support wheel, unwinding the cable and reducing its tension.

[0016] Preferably, the inner wall of the limit plate is slidably connected with a fixing pin parallel to the limit pin and pointing to the pressure wheel, and the outer wall of the pressure wheel is circumferentially provided with a plurality of fixing holes matching the fixing pin, and the fixing holes are distributed in a ring shape on the outer wall of the pressure wheel, the limit rod is coaxially connected with a fixed gear, and the fixing pin is provided with a fixed tooth groove meshing with the fixed gear.

[0017] By adopting the above technical solution, the limit pin limits the rotation of the support wheel, and the fixed pin limits the rotation of the pressure wheel. The two cooperate with each other to further limit the cable and prevent it from moving on its own.

[0018] Preferably, the pressure wheel and the support wheel are provided with mutually meshing synchronous teeth.

[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, ensuring the stability of cable unwinding.

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

[0021] By adopting the above technical solution, the guide roller guides the direction of the cable, making it easier to unwind and retract the cable.

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

[0023] 1. Through the setting of sensors and regulating motors, the tension of the cable is monitored in real time and the unwinding is adjusted through the support wheel to prevent the tension from being too large and affecting its service life. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 Schematic diagram of the connection between the pressing wheel and the supporting wheel in the embodiment.

[0026] Description of reference numerals:

[0027] 1. Telescopic arm; 11. Upper arm; 12. Lower arm; 13. Connecting frame; 2. Cable; 21. Charging head; 3. Guide frame; 4. Support roller; 41. Support wheel; 411. Limit hole; 42. Adjustment motor; 5. Pressure roller; 51. Pressure wheel; 511. Fixing hole; 52. Limit plate; 61. Control lever; 62. Limit lever; 63. Limit gear; 64. Limit pin; 65. Control motor; 66. Fixing pin; 67. Fixing gear; 7. Guide roller; 71. Guide wheel. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0029] Example

[0030] The present application discloses a marine charging device that automatically adjusts tension. Figure 1 , including a telescopic arm 1 and a cable 2. The telescopic arm 1 includes a boom 11 and a forearm 12. The boom 11 can be freely extended and retracted. The forearm 12 is hinged to the end of the boom 11 and can rotate around the end of the boom 11 to adjust the height of the forearm 12. A connecting frame 13 is provided at the end of the forearm 12 away from the boom 11. The cable 2 includes a charging head 21 located at the connecting frame 13 for connecting to a ship, and the other end of the cable 2 is wound out from the end of the boom 11 away from the forearm 12 for connecting 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. A plurality of guide rollers 7 distributed in an arc shape are rotatably connected to the guide frame 3. A plurality of guide wheels 71 are coaxially connected to the guide roller 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. The guide frame 3 is rotatably connected to the support rollers 4, which are the same number as the cables 2. The support rollers 4 are provided with a plurality of support wheels 41 for supporting the cables 2, 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 pinch rollers 5, the same number as the cables 2, located above the support rollers 4. The pinch rollers 5 are equipped with pinch wheels 51, which clamp the cables 2 between them and the support rollers 41. The pinch wheels 51 and the support rollers 41 are equipped with meshing synchronous teeth. A sensor for monitoring the tension of the cables 2 is installed on the cables 2 between the guide frame 3 and the connecting frame 13. An adjustment motor 42 is installed on the support rollers 4, which is electrically connected to the sensor via a controller.

[0033] Reference Figure 1 When the sensor detects that the tension of the cable 2 is large, it sends a signal to the controller, and the controller sends an instruction to the adjustment motor 42. The adjustment motor 42 drives the support roller 4 and the support wheel 41 to rotate, thereby unwinding the cable 2 and reducing the tension of the cable 2.

[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. On both sides of the pressure wheel 51 are provided limit plates 52 fixedly connected to the pressure roller 5. The diameter of the limit plates 52 is larger than that of the pressure wheel 51. The lower ends of the limit plates 52 are located outside the support wheel 41, and the support wheel 41 is embedded between the two limit plates 52. The limit 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 is provided with two sliding holes parallel to the pressing roller 5, and the two sliding holes are respectively slidably connected with a fixing pin 66 and a limiting pin 64. The fixing pin 66 points to the pressing wheel 51, and the limiting pin 64 points to the supporting wheel 41.

[0036] Reference Figure 1 and Figure 2 The outer wall of the pressure wheel 51 is circumferentially provided with a plurality of fixing holes 511 that match the fixing pins 66. The fixing holes 511 are distributed in a circular pattern on the outer wall of the pressure wheel 51. When the fixing pins 66 are inserted into the fixing holes 511, the pressure wheel 51 is locked and cannot rotate. When the fixing pins 66 are removed from the fixing holes 511, the pressure wheel 51 is released and can rotate on its own.

[0037] Reference Figure 1 and Figure 2 The outer wall of the support wheel 41 is circumferentially provided with a plurality of stop holes 411 that engage with the stop pins 64. The stop holes 411 are distributed in a circular pattern along the outer wall of the support wheel 41. When the stop pins 64 are inserted into the stop holes 411, the support wheel 41 is locked and cannot rotate. When the stop pins 64 are removed from the stop holes 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 to the pressure roller 5. A control motor 65 is mounted at the end of the pressure roller 5 to drive the control rod 61. The control motor 65 is electrically connected to the sensor via a controller. A limit rod 62 is rotatably connected to the limit plate 52, perpendicular to the control rod 61. The upper end of the limit rod 62 is inserted into the pressure roller 5 and connected to the control rod 61 via 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 tooth groove is defined on the upper side of the limit pin 64, which meshes with the limit gear 63. A fixed tooth groove is defined on the upper side of the fixed pin 66, which meshes with the fixed gear 67.

[0039] The implementation principle of a marine charging device that automatically adjusts the tension in an embodiment of the present 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, and 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 is started 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 the cable 2 is reduced, the sensor sends a signal to the controller, and the controller sends instructions to the control motor 65 and the adjustment motor 42. The adjustment 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 rod 61 to rotate, and drives the fixing pin 66 and the limiting pin 64 to gradually extend through the limiting rod 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 time, the support wheel 41 and the pressure wheel 51 are locked. The rolling friction between the cable 2 and the support wheel 41 and the pressure wheel 51 is converted into sliding friction, increasing the friction between the cable 2 and the support wheel 41 and the pressure wheel 51, thereby reducing the possibility of the cable 2 moving on its own.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A ship-mounted charging device capable of automatically adjusting tension, comprising a telescopic arm (1), wherein the telescopic arm (1) is provided with a cable (2), wherein the cable (2) comprises a charging head (21) for connecting to a ship, and wherein: The telescopic arm (1) comprises a large arm (11) and a small arm (12), wherein the large arm (11) and the small arm (12) are hingedly connected, a connecting frame (13) is provided at the end of the small arm (12), the charging head (21) is located in 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), the end of the large arm (11) close to the small arm (12) is provided with a guide frame (3), a support roller (4) is rotatably connected to the guide frame (3), and the support roller (4) is provided with a plurality of rollers for supporting the cable. (2) of the support wheel (41), the guide frame (3) is provided with a number of pinching rollers (5) that is the same as the number of the cables (2), the pinching rollers (5) and the cables (2) are in one-to-one correspondence and are coaxially connected to the pinching rollers (51), the cables (2) are clamped between the pinching rollers (51) and the support wheel (41), a sensor for monitoring the tension of the cables (2) is installed on the cables (2) between the guide frame (3) and the connecting frame (13), an adjusting motor (42) is installed on the supporting roller (4), and the adjusting motor (42) is electrically connected to the sensor through a controller.

2. The marine charging device with automatic tension adjustment according to claim 1, characterized in that: Limiting plates (52) are provided on both sides of the pressing wheel (51), the diameter of the limiting plates (52) is larger than the diameter of the pressing wheel (51), and the supporting wheel (41) is embedded between the two limiting plates (52).

3. The marine charging device with automatic tension adjustment according to claim 2, characterized in that: 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).

4. The marine charging device with automatic tension adjustment according to claim 3, characterized in that: The inner wall of the limiting plate (52) is slidably connected to a limiting pin (64) pointing to the support wheel (41), and the limiting pin (64) slides axially along the limiting plate (52). The outer wall of the support wheel (41) is provided with a plurality of limiting holes (411) matching the limiting pin (64), and the limiting holes (411) are distributed in an annular shape on the outer wall of the support wheel (41).

5. The marine charging device with automatic tension adjustment according to claim 4, characterized in that: The pressure roller (5) is rotatably connected to a control rod (61), and the limit plate (52) is rotatably connected to a limit rod (62) perpendicular to the control rod (61). The upper end of the limit rod (62) is connected to the control rod (61) through a bevel gear pair, and the lower end of the limit rod (62) is coaxially connected to a limit gear (63). The limit pin (64) is provided with a limit tooth groove that meshes with the limit gear (63). The end of the pressure roller (5) is provided with a control motor (65) for driving the control rod (61) to rotate, and the control motor (65) is electrically connected to the sensor through a controller.

6. The marine charging device with automatic tension adjustment according to claim 5, characterized in that: The inner wall of the limiting plate (52) is slidably connected to a fixing pin (66) which is parallel to the limiting pin (64) and points to the pressure wheel (51). The outer wall of the pressure wheel (51) is circumferentially provided with a plurality of fixing holes (511) which match the fixing pin (66). The fixing holes (511) are distributed in a ring shape on the outer wall of the pressure 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 which meshes with the fixing gear (67).

7. The marine charging device with automatic tension adjustment according to claim 6, characterized in that: The pressing wheel (51) and the supporting wheel (41) are provided with synchronous tooth grooves that mesh with each other.

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

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