Automatic cable winding and unwinding device

Abstract

The invention relates to the technical field of aviation power supply systems, and discloses an automatic cable winding and unwinding device which comprises a case, a first flexible cable and a second flexible cable. The first flexible cable is connected with the power interface, the second flexible cable is electrically connected with the first flexible cable, and a connector is arranged on the second flexible cable; the end of the second flexible cable with the connector penetrates out of the case from a cable outlet of the case; power signals and control signals in the automatic cable take-up and pay-off device are transmitted through the first flexible cable instead of a traditional slip ring contact transmission mode, contact resistance is reduced, line electric energy loss is less, no heating component exists, direct transmission of power is guaranteed, and the reliability of the whole device is improved; in addition, the cables do not roll each other and are not clamped, and stable transmission of electric power and control signals is ensured. Through the remote control button on the connector, a single person can remotely control the automatic winding and unwinding of the cable, so that the labor force is saved, and the efficiency is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of aviation power supply systems and discloses an automatic cable retracting and releasing device. Background Art

[0002] The automatic cable retracting device is used for power transmission between power supply equipment and large power-consuming equipment. This type of product is divided into fixed and mobile types. The fixed type is mostly used for large current power-consuming equipment, and the mobile type is mostly used for small current equipment. At present, the product technology is generally manual cable dragging or hand-cranked reel type. The automatic cable retracting technology has become increasingly mature. In some fields, in line with user requirements, the development of intelligent control is the development trend of this type of technology and products. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic cable retraction and extension device, which can reduce line power loss, reduce heat generation, ensure direct transmission of power, and improve the reliability of the entire equipment; and can ensure that the cables are not crushed or stuck, ensure stable transmission of power and control signals, and can realize automatic cable retraction and extension by a single person remotely controlled, saving labor and improving efficiency.

[0004] In order to achieve the above technical effects, the technical solution adopted by the present invention is:

[0005] An automatic cable retracting and releasing device, comprising:

[0006] A chassis, wherein a power interface and a cable outlet are provided on the chassis, and a reel is provided inside the chassis, wherein the reel comprises a cable storage drum and a motor for driving the cable storage drum to rotate;

[0007] a first flexible cable, wherein one end of the first flexible cable is electrically connected to the power interface, and the other end of the first flexible cable is fixed to the cable storage drum;

[0008] A second flexible cable, one end of the second flexible cable is electrically connected to the first flexible cable end fixed on the cable storage drum, and the other end of the second flexible cable is provided with a connector; the second flexible cable end with the connector passes through the cable outlet of the chassis to the outside of the chassis, and the connector is provided with a remote control button for controlling the start and stop of the reel motor;

[0009] The cable arrangement mechanism includes a linear guide rail arranged in the chassis, the linear guide rail is parallel to the cable storage drum, a linear bearing is installed on the linear guide rail, a guide mechanism is fixed on the linear bearing, and the guide mechanism is provided with a through hole for the second flexible cable to pass through.

[0010] Furthermore, a control panel for controlling the start and stop of the reel machine motor is provided on the chassis, and the control panel is communicatively connected with the motor via a signal line.

[0011] Furthermore, the control button is connected to the motor via wired or wireless communication.

[0012] Furthermore, a support tube is fixedly installed in the chassis, a rubber pad is fixed on the support tube, a first wire pressing plate is fixed on the rubber pad, a first wire pressing plate has a first wire inlet hole on its end face, and a first wire outlet hole is provided on a side face of the first wire pressing plate.

[0013] Furthermore, a steel pad is fixed to one end face of the cable storage drum, a rubber wire guard is installed on the steel pad, a second wire pressing plate is fixed on the rubber wire guard, a second wire outlet hole is arranged on the side of the second wire pressing plate, and a second wire inlet hole connected to the second wire outlet hole is opened on the end face of the second pressing plate.

[0014] Furthermore, the first wire pressing plate and the second wire pressing plate are both made of nylon, and a rubber wire guard plate is provided between the second wire pressing plate and the steel base plate.

[0015] Furthermore, the rotating shaft of the cable storage drum is driven and connected to the driving shaft of the motor via a detachable plug-in key, and the chassis is also provided with a hand crank that matches the rotating shaft key slot corresponding to the plug-in key.

[0016] Furthermore, the cable storage drum has an outer wall with a spiral tooth drum structure, and the tooth groove width of the spiral teeth of the cable storage drum is greater than the diameter of the second flexible cable.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention adopts the first flexible cable to replace the traditional slip ring contact transmission form for the transmission of the power signal and control signal inside the automatic cable retracting and releasing device, thereby reducing the contact resistance, reducing the line power loss, and eliminating the heating components, thereby ensuring the direct transmission of power and improving the reliability of the entire device;

[0019] 2. The cable storage drum of the present invention adopts a spiral groove structure, so that the second flexible cable of the product will not be crushed or stuck during the process of retracting and releasing the cable, thus ensuring stable transmission of power and control signals;

[0020] 3. The present invention can realize the automatic retraction and extension of the cable by a single person remotely controlled by a remote control button on the connector, avoiding the problem that the traditional retraction and extension device requires 2 to 3 people to cooperate to implement, saving labor and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the automatic cable retracting and releasing device in the embodiment;

[0022] Figure 2 Schematic diagram of the structure of the cable storage drum in the embodiment;

[0023] Figure 3 This is a schematic diagram of the structure of the first wire pressing plate in the embodiment;

[0024] Figure 4 This is a schematic diagram of the structure of the second wire pressing plate in the embodiment;

[0025] Figure 5 Schematic diagram of the connection relationship between the second wire pressing plate and the first flexible cable in the embodiment;

[0026] Figure 6 is a schematic diagram of the structure of the connector in the embodiment;

[0027] Among them, 1. chassis; 2. cable outlet; 3. cable storage drum; 4. first flexible cable; 5. second flexible cable; 6. connector; 7. linear guide rail; 8. hand crank; 9. guide mechanism; 10. support cylinder; 11. rubber pad; 12. first wire pressing plate; 13. first wire entry hole; 14. first wire outlet hole; 15. steel pad; 16. second wire pressing plate; 17. second wire outlet hole; 18. second wire entry hole; 19. rubber wire guard plate; 20. control button. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the embodiments and drawings. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0029] Example

[0030] See also Figure 1-Figure 6 , an automatic cable retracting and releasing device, comprising:

[0031] A chassis 1, wherein the chassis 1 is provided with a power interface and a cable outlet 2, wherein a reel is provided inside the chassis 1, wherein the reel comprises a cable storage drum 3 and a motor for driving the cable storage drum 3 to rotate;

[0032] A first flexible cable 4, wherein one end of the first flexible cable 4 is electrically connected to the power interface, and the other end of the first flexible cable 4 is fixed to the cable storage drum 3;

[0033] A second flexible cable 5, one end of which is electrically connected to the end of the first flexible cable 4 fixed on the cable storage drum 3, and the other end of the second flexible cable 5 is provided with a connector 6; the end of the second flexible cable 5 with the connector 6 passes through the outlet 2 of the chassis 1 to the outside of the chassis 1, and the connector 6 is provided with a remote control button 20 for controlling the start and stop of the reel motor;

[0034] The cable arrangement mechanism includes a linear guide rail 7 arranged in the chassis 1, the linear guide rail 7 is parallel to the cable storage drum 3, a linear bearing is installed on the linear guide rail 7, a guide mechanism 9 is fixed on the linear bearing, and the guide mechanism 9 is provided with a through hole for the second flexible cable 5 to pass through.

[0035] In this embodiment, the transmission of the power signal and control signal inside the automatic cable retracting device is replaced by the first flexible cable 4 instead of the traditional slip ring contact transmission form, which reduces the contact resistance, reduces the line power loss, and has no heating components, thereby ensuring the direct transmission of power and improving the reliability of the entire device; in addition, the cable storage drum 3 adopts a spiral groove structure, so that the second flexible cable 5 of the product does not crush each other or get stuck during the process of retracting and releasing the cable, thereby ensuring the stable transmission of power and control signals. And the remote control button 20 on the connector 6 can realize the automatic retraction of the cable by a single person remotely, avoiding the problem that the traditional retracting device requires 2 to 3 people to cooperate to achieve, saving labor and improving efficiency.

[0036] In this embodiment, the chassis 1 is provided with a control panel for controlling the start and stop of the motor of the reel, and the control panel is connected to the motor through a signal line. The control module of the reel is divided into functional modules such as an input control panel, a control panel, an input contactor, an overload relay, a frequency converter, and a low-temperature working module; the low-temperature working module is composed of a 0°C temperature control switch (normally open) and a contactor switching module; the power module is directly powered by the motor. The input interface is divided into an input power supply 380V / 50Hz and an aviation power input interface; the output interface is a remote-controlled aviation cable plug and cable. In this embodiment, the reel is energized by the frequency converter for speed regulation, and the control panel is provided with a speed switching switch and a speed knob switch, which can realize the continuous speed regulation of the reel at 0-1m / s. When the frequency converter fails, the frequency converter can be cut out of the circuit, so that the automatic cable retracting device can retract and release the cable at a constant speed of 0.5m / s. In addition, the main power supply start / stop button on the control panel can be used to control the start and stop of the main power supply. The reel machine supplies power to the inverter or motor through the input contactor, and the motor drives the cable storage drum 3 to rotate forward or reverse to realize the cable reeling and unreeling. The power line and control line of the cable can be connected to the reel machine through the ultra-flexible cable and output through the external interface. The reel machine can be controlled by the reeling and unreeling buttons on the control panel, or remotely controlled by the cable plug. By receiving the electrical reeling / unreeling control signal of the remote-controlled aviation cable plug, the automatic reeling and unreeling function of the cable can be realized.

[0037] In this embodiment, the control button 20 is connected to the motor by wired or wireless communication. For example, the connector 6 in this embodiment is a remote control aviation plug that matches the aircraft plug-in socket. The remote control aviation plug integrates electronic components such as LED indicators and control buttons 20 into the plug, and then integrates them into an integrated power plug through circuit design and plug structure design; the remote control aviation plug adopts a modular assembly structure as a whole, and the remote control aviation plug is divided into three parts: the front section, the middle section and the rear section. The automatic retracting and releasing of the cable and the start and stop of the power supply can be remotely controlled by operating the button on the plug, and the state of the retracting and releasing line and the working condition of the power supply can be displayed by the indicator light on the plug. In this embodiment, the front section is the interface part that cooperates with the on-board power socket; the middle section is the main body, which is used to control the retracting and releasing wiring of the cable; and the rear section is the cable outlet. The three parts are connected by fasteners, which are easy to install and disassemble, convenient for daily inspection and maintenance, and convenient for repairing and replacing components. At the same time, a protective cover is set at the joint of the middle section and the rear section to improve the product's anti-collision and wear resistance. During specific remote control operation, the reel is controlled by the reel-in and reel-out buttons of the remote-controlled aviation plug. The reel-in and reel-out buttons are interlocked. The reel-in and reel-out buttons are invalid when reeling, and invalid when reeling. If the reel-in and reel-out buttons are pressed at the same time, the reel will not operate; when the reel is remotely operated, only the reel is effective, and no misoperation will occur. In addition, when the aviation plug is docked in place, the control button 20 is used to manually or automatically send a position signal to the reel, and the reel-in and reel-out buttons on the reel control panel are invalid; when the aviation plug is unplugged and the aviation plug position signal disappears, the reel panel resumes the reel-in and reel-out functions.

[0038] It should be noted that the motor of this embodiment has a locking function, which will automatically lock when no operation is performed, and will not automatically retract or release the wire. It also has a limit release and retraction control function, especially when the wire is fully released, the wire release limit switch can be triggered to prohibit wire release and only retract the wire; when the wire is fully retracted, the wire retraction limit switch can be triggered to prohibit wire retraction and only release the wire; the position of the limit switch is adjustable to achieve adjustable length of the second flexible cable 5 released.

[0039] In this embodiment, a support tube 10 is fixedly installed in the chassis 1, a rubber pad 11 is fixed on the support tube 10, a first wire pressing plate 12 is fixed on the rubber pad 11, a first wire entry hole 13 is provided on the end face of the first wire pressing plate 12, and a first wire exit hole 14 is provided on the side of the first wire pressing plate 12. After the first flexible cable 4 is connected to the power interface, it passes through the inner cavity of the support tube 10, and then passes through the first wire exit hole 14 between the rubber pad 11 and the first wire pressing plate 12. The first flexible cable 4 is pressed by the rubber pad 11 and the first wire pressing plate 12 to fix the input end of the first flexible cable 4. Similarly, a circular hole is provided in the middle of the rubber pad 11. After the first flexible cable 4 passes through this hole, the rubber pad 11 fits with the inner hole of the support tube 10, ensuring that the first flexible cable 4 smoothly transitions into the inner hole of the support tube 10, thereby reducing the friction and extrusion of the first flexible cable 4.

[0040] In this embodiment, a steel backing plate 15 is fixed to one end face of the cable storage drum 3, a rubber wire guard plate 19 is installed on the steel backing plate 15, a second wire pressing plate 16 is fixed to the rubber wire guard plate 19, a second wire outlet hole 17 is arranged on the side of the second wire pressing plate 16, and a second wire inlet hole 18 connected to the second wire outlet hole 17 is opened on the end face of the second pressing plate. After the first flexible cable 4 passes through the first wire outlet hole 14, it passes through the second wire inlet hole 18 on the end face of the second wire pressing plate 16, and then passes through the second wire outlet hole 17, so as to fix the output end of the first flexible cable 4.

[0041] In this embodiment, the first wire pressing plate 12 and the second wire pressing plate 16 are both made of nylon, and a rubber wire guard plate 19 is also provided between the second wire pressing plate 16 and the steel pad 15. A circular hole is provided in the middle of the rubber wire guard plate 19, and the ultra-flexible cable passes through this hole. During the rotational movement, the rubber wire guard plate 19 protects the ultra-flexible cable and avoids the adverse consequences of excessive friction and cable wear and failure. A steel support column is axially installed between the first wire pressing plate 12 and the second wire pressing plate 16, which plays a role of limiting and supporting, and avoids the problem that the cable is easily broken due to excessive force when the first wire pressing plate 12 and the second wire pressing plate 16 press the first flexible cable 4.

[0042] In this embodiment, the rotating shaft of the cable storage drum 3 is connected to the driving shaft of the motor through a detachable plug-in key, and the chassis 1 is also provided with a hand crank 8 that matches the rotating shaft keyway corresponding to the plug-in key. In an emergency situation where there is no electrical or circuit failure, the hand crank 8 can be used to manually retract and release the cable. During operation, the plug-in key is pulled out and the hand crank 8 is inserted into the rotating shaft end to manually retract and release the cable. The hand crank 8 is provided with a fixed storage position on the chassis 1. The hand crank 8 needs to have a locking device when in use to prevent it from falling off during rotation. The manual retracting and releasing speed reduction ratio is 1:1.

[0043] In this embodiment, the cable storage drum 3 is a spiral tooth drum structure with an outer wall, and the tooth groove width of the spiral teeth of the cable storage drum 3 is greater than the diameter of the second flexible cable 5. The main function of the automatic cable retracting device is to evenly arrange the power output cable on the cable storage drum 3, so that the automatic cable retracting device can output the second flexible cable 5 without mutual crushing and jamming during the process of retracting and releasing the cable. The uniform spiral cable arrangement technology is mainly adopted to achieve this function, which is mainly realized by spiral tooth drum, guide mechanism 9, linear guide rail 7, linear bearing and other mechanisms. The surface of the cable storage drum 3 is welded with spiral teeth, and the tooth groove width is slightly greater than the diameter of the power output cable. The linear guide rail 7 is parallel to the axis of the cable storage drum 3 and is located directly in front of the cable storage drum 3. The linear bearing in the guide mechanism 9 passes through the linear guide rail 7, and the power output cable (second flexible cable 5) passes through the middle of the guide mechanism 9 and enters the spiral tooth groove of the cable storage drum 3. The end of the second flexible cable 5 is fixed to one side of the cable storage drum 3. When storing the cables, the linear bearing installed on the guide mechanism 9 embeds the second flexible cable 5 into the spiral tooth groove of the drum below the output cable.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic cable retracting and releasing device, characterized in that: include: A chassis (1), wherein the chassis (1) is provided with a power interface and a cable outlet (2), and wherein a reel is provided inside the chassis (1), wherein the reel comprises a cable storage drum (3) and a motor for driving the cable storage drum (3) to rotate; A first flexible cable (4), one end of the first flexible cable (4) being electrically connected to the power interface, and the other end of the first flexible cable (4) being fixed on the cable storage drum (3); A second flexible cable (5), one end of the second flexible cable (5) being electrically connected to an end of the first flexible cable (4) fixed on the cable storage drum (3), and the other end of the second flexible cable (5) being provided with a connector (6); The end of the second flexible cable (5) with the connector (6) passes through the cable outlet (2) of the chassis (1) to the outside of the chassis (1), and the connector (6) is provided with a remote control button (20) for controlling the start and stop of the reel motor; A cable arrangement mechanism, the cable arrangement mechanism comprising a linear guide rail (7) arranged in a chassis (1), the linear guide rail (7) being parallel to the cable storage drum (3), a linear bearing being mounted on the linear guide rail (7), a guide mechanism (9) being fixed on the linear bearing, and a through hole being provided on the guide mechanism (9) for the second flexible cable (5) to pass through.

2. The automatic cable retracting and releasing device according to claim 1, characterized in that: The chassis (1) is provided with a control panel for controlling the start and stop of the reel machine motor, and the control panel is communicatively connected with the motor via a signal line.

3. The automatic cable retracting and releasing device according to claim 1, characterized in that: The control button (20) is connected to the motor in a wired or wireless communication manner.

4. The automatic cable retracting and releasing device according to claim 1, characterized in that: A support tube (10) is fixedly installed in the chassis (1), a rubber pad (11) is fixed on the support tube (10), a first wire pressing plate (12) is fixed on the rubber pad (11), a first wire pressing plate (12) is provided on the end surface of the first wire pressing plate (12), and a first wire outlet hole (14) is provided on the side surface of the first wire pressing plate (12).

5. The automatic cable retracting and releasing device according to claim 4, characterized in that: A steel pad (15) is fixed to one end face of the cable storage drum (3), a rubber wire protection plate (19) is installed on the steel pad (15), a second wire pressing plate (16) is fixed on the rubber wire protection plate (19), a second wire outlet hole (17) is arranged on the side face of the second wire pressing plate (16), and a second wire inlet hole (18) connected to the second wire outlet hole (17) is opened on the end face of the second pressing plate.

6. The automatic cable retracting and releasing device according to claim 5, characterized in that: The first wire pressing plate (12) and the second wire pressing plate (16) are both made of nylon, and a rubber wire guard plate (19) is also provided between the second wire pressing plate (16) and the steel backing plate (15).

7. The automatic cable retracting and releasing device according to claim 1, characterized in that: The rotating shaft of the cable storage drum (3) is connected to the driving shaft of the motor via a detachable plug-in / plug-out key, and the chassis (1) is also provided with a hand crank (8) that matches the rotating shaft keyway corresponding to the plug-in / plug-out key.

8. The automatic cable retracting and releasing device according to claim 1, characterized in that: The cable storage drum (3) has an outer wall with a spiral tooth drum structure, and the tooth groove width of the spiral teeth of the cable storage drum (3) is greater than the diameter of the second flexible cable (5).

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