Automatic cable retracting and retracting device

Abstract

The present invention discloses an automatic cable retractable and retractable device, comprising a support mechanism and a cable drum, a drive disk mounted on the support mechanism, the drive disk comprising a fixed disk and a rotating disk, the fixed disk fixedly mounted on the support mechanism, the rotating disk and the fixed disk movably assembled and connected to a motor, the cable drum and the rotating disk fixedly assembled; a current control structure is provided in the drive disk, and the motor is connected to a power supply through the current control structure. The present invention cooperates with the rotating disk and the fixed disk, the rotating disk is provided with a torque by an induction motor, and the current size of the induction motor is controlled by a current control structure that changes accordingly with the length of the cable unwinding, thereby generating different torques to provide to the cable drum to tighten the cable, ensuring that the pull-back force applied to the cable by the cable drum is adapted to the length of the cable unwinding. The cable will not be dragged on the ground due to failure to retract in time, nor will it be torn off due to being tightened too quickly, thereby ensuring the normal operation of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment automation accessories, and in particular to a device for automatically winding and releasing cables attached to mechanical equipment. Background Art

[0002] As my country's industrial automation accelerates, the automation of mechanical equipment is also rapidly developing. The development of various industries in my country, including ports, railways, highways, and construction, is inseparable from the use of large-scale mechanical equipment. The supporting equipment cables, lengths, and types have also become more comprehensive, and connection methods and cable crossings have become more complex. For example, gantry cranes, commonly used for lifting, must be equipped with long cables when traveling on existing tracks. Electric reels are used to retract and release the cables while the equipment moves to control communications and power supply.

[0003] Currently, most commonly used cable retraction equipment is electric reeling devices. Initially, these devices operate smoothly. However, over time, due to factors such as aging of the equipment or cables, interference from debris, or damage to accessory components, the electric reeling device may not operate properly. This can cause the cable to drag on the ground due to incomplete retraction. Alternatively, the reel may wind the cable too quickly, causing the cable to break and power outages. All of these issues can negatively impact normal production operations.

[0004] The other method is manual cable retraction. While this can significantly reduce cable damage, the increased labor costs are a significant expense. Furthermore, walking near the working surface of large equipment can easily cause safety accidents and even casualties. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the defects of the existing technology and provide a cable automatic telescopic and retractable device which has a simple structure and can effectively solve the damage caused by aging and contamination of cables by debris, which can not only save the cost of use, but also improve the safety factor of use, making the use of cables safer and more reliable. It is easy to implement and suitable for many mechanical fields.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a cable automatic telescopic retractable device, comprising a support mechanism and a cable reel, the cable reel being rotatably mounted on the support mechanism for winding the cable, characterized in that: a driving disk is mounted on the support mechanism, the driving disk comprising a fixed disk and a rotating disk, the fixed disk is fixedly mounted on the support mechanism, the rotating disk and the fixed disk are movably assembled and connected to a motor, and the motor provides a torque for retrieving the cable to the rotating disk; the cable reel and the rotating disk are fixedly assembled to form a structure that can rotate synchronously; a current control structure is provided in the driving disk, and the motor is connected to the power supply through the current control structure to adjust the current input to the motor.

[0007] Furthermore, the current control structure includes a sliding bolt made of a conductor and a resistor sheet arranged in a fixed disk. The resistor sheet is connected to a power supply through a wire, and the sliding bolt is in sliding contact with the resistor sheet. The motor is an induction motor, which is electrically connected to the sliding bolt through a wire. The sliding bolt slides along the resistor sheet as the rotating disk rotates to change the connected resistance value to adjust the current input to the induction motor. The induction motor outputs different torques through different current inputs and provides them to the cable reel to pull back the unwound cable.

[0008] Furthermore, a spiral guide groove in a spiral shape is provided in the rotating disk, and a straight guide groove is provided in the fixed disk; the sliding bolt is inserted into the guide groove and the spiral guide groove at the same time, and can be pushed to slide along the guide groove as the rotating disk rotates; the resistor sheet is provided on the inner side wall of the guide groove, and an insulating layer is provided between the resistor sheet and the fixed disk, and the resistance value of the resistor sheet connected is changed by sliding the sliding bolt in the guide groove.

[0009] Furthermore, the sliding bolt is composed of two cylinders, one large and one small, which are an integrated structure. The large cylinder forms the sliding part, and the small cylinder forms the power connection part; the front end of the sliding part is inserted into the spiral guide groove of the rotating disk, and the rear end is embedded in the guide groove of the fixed disk. The power connection part passes through the guide groove and is connected to the induction motor through a wire.

[0010] Furthermore, an anti-wear insulating layer is provided in the spiral guide groove to isolate the current of the sliding bolt and play an insulating role.

[0011] Furthermore, the spiral guide groove spirally extends from a position close to the center of the rotating disk to a position close to the edge of the rotating disk, and the guide groove radially extends from a position close to the center of the fixed disk to a position close to the edge of the fixed disk; the sliding starting point of the sliding bolt is close to the center of the fixed disk and the rotating disk, and the sliding end point is close to the edge of the fixed disk and the rotating disk.

[0012] Furthermore, the supporting mechanism is a supporting frame, the fixed disk is vertically fixed on the supporting frame, and the cable disk is assembled and fixed to the rotating disk in a posture that the cable disk is axially perpendicular to the fixed disk.

[0013] Furthermore, the induction motor is mounted on the rear end surface of the fixed disk through the connecting disk, and its transmission shaft passes through the fixed disk and is connected and fixed to the rotating disk. A bearing is provided between the transmission shaft and the fixed disk, and the bearing is covered by the connecting disk.

[0014] The present invention utilizes a rotating disk and a fixed disk. The rotating disk is provided with torque by an induction motor, and the current input to the induction motor is controlled by a current control structure that varies with the length of the cable unwinding. This generates different torques and applies them to the cable drum to tighten the cable, ensuring that the pullback force applied by the cable drum matches the length of the cable unwinding. This prevents the cable from being dragged on the ground due to incomplete retraction, and prevents the cable from being torn due to excessive tightening, thereby ensuring the normal operation of the device. This effectively prevents damage to the cable due to aging or contamination, and provides a high safety factor, making cable use safer and more reliable. Furthermore, the device has a simple structure, is easy to implement, and can save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle;

[0017] Figure 3 Schematic diagram of the assembly structure of the drive disc (cross-section view);

[0018] Figure 4 Schematic diagram of the exploded structure of the drive disc (section view);

[0019] Figure 5 is an axial schematic diagram of the sliding bolt;

[0020] Figure 6 Schematic diagram of the sliding pin sliding in the fixed disk and the rotating disk.

[0021] In the figure, 1 is a driving disk, 2 is a fixed disk, 21 is a guide slide, 22 is a resistor, 3 is a rotating disk, 31 is a spiral guide groove, 4 is a sliding bolt, 41 is a sliding part, 42 is a power connection part, 5 is an induction motor, 51 is a transmission shaft, 52 is a bearing, 53 is a connecting disk, 6 is a cable disk, 7 is a cable, 8 is a support frame, and 9 is a wire. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to specific embodiments of the present invention:

[0023] In this embodiment, refer to Figures 1-6The automatic cable telescopic retractable device includes a support mechanism and a cable drum 6, which is rotatably mounted on the support mechanism for winding a cable 7; a drive disk 1 is mounted on the support mechanism, and the drive disk 1 includes a fixed disk 2 and a rotating disk 3, the fixed disk 2 is fixedly mounted on the support mechanism, and the rotating disk 3 is movably assembled with the fixed disk 2 and is connected to a motor, which provides a torque for retrieving the cable 7 to the rotating disk 3 through the motor; the cable drum 6 is fixedly assembled with the rotating disk 3 to form a structure that can rotate synchronously; a current control structure is provided in the drive disk 1, and the motor is connected to the power supply through the current control structure to adjust the current input to the motor.

[0024] The current control structure includes a sliding bolt 4 made of a conductor and a resistor 22 arranged in the fixed disk 2. The resistor 22 is connected to the power supply via a wire 9, and the sliding bolt 4 is in sliding contact with the resistor 22. The motor is an induction motor 5, which is electrically connected to the sliding bolt 4 via a wire 9. The sliding bolt 4 slides along the resistor 22 as the rotating disk 3 rotates to change the connected resistance value to adjust the current input to the induction motor 5. The induction motor 5 outputs different torques through different current inputs and provides them to the cable drum 6 to pull back the unwound cable 7.

[0025] A spiral guide groove 31 is provided in the rotating disk 3, and a straight guide groove 21 is provided in the fixed disk 2. The sliding bolt 4 is inserted into both the guide groove 21 and the spiral guide groove 31 and can be pushed to slide along the guide groove 21 as the rotating disk 3 rotates. The resistor 22 is provided on the inner side wall of the guide groove 21, and an insulating layer is provided between the resistor 22 and the fixed disk 2 to prevent leakage. The resistance value connected to the resistor 22 is changed by sliding the sliding bolt 4 in the guide groove 21.

[0026] The sliding bolt 4 is composed of two cylinders, one large and one small, which are an integral structure. The large cylinder forms the sliding portion 41, and the small cylinder forms the power connection portion 42; the front end of the sliding portion 41 is inserted into the spiral guide groove 31 of the rotating disk 3, and the rear end is embedded in the guide groove 21 of the fixed disk 2. The power connection portion 42 passes through the guide groove 21 and is connected to the induction motor 5 via a wire 9.

[0027] An anti-wear insulating layer is provided in the spiral guide groove 31 to isolate the current of the sliding bolt 4 and play an insulating role.

[0028] The spiral guide groove 31 spirally extends from a position near the center of the rotating disk 3 to a position near the edge of the rotating disk 3, and the guide groove 21 radially extends from a position near the center of the fixed disk 2 to a position near the edge of the fixed disk 2; the sliding starting point of the sliding bolt 4 is near the center of the fixed disk 2 and the rotating disk 3, and the sliding end point is near the edge of the fixed disk 2 and the rotating disk 3.

[0029] The supporting mechanism is a supporting frame 8 (a supporting rod may also be used), the fixed disk 2 is vertically fixedly mounted on the supporting frame 8 , and the cable disk 6 is assembled and fixed to the rotating disk 3 in a posture that the axial direction is perpendicular to the fixed disk 2 .

[0030] The induction motor 5 is mounted on the rear end face of the fixed disk 2 via a connecting disk 53 , and its transmission shaft 51 passes through the fixed disk 2 and is fixedly connected to the rotating disk 3 . A bearing 52 is provided between the transmission shaft 51 and the fixed disk 2 , and the bearing 52 is covered by the connecting disk 53 .

[0031] Implementation process of the present invention:

[0032] Step 1: Select standard materials in accordance with national laws, regulations and relevant requirements;

[0033] Step 2: Fabricate the sliding bolt 4. The sliding bolt 4 is composed of two welded cylinders, one large and one small. It features electrical conductivity, high strength, and corrosion resistance. The smaller cylinder forms the power connection portion 42, which is connected to a wire 9 that is connected to the induction motor 5. The larger cylinder forms the sliding portion 41, whose diameter is slightly smaller than the width of the guide groove 21 and whose height is slightly smaller than the height of the spiral guide groove 31, allowing it to slide freely within the spiral guide groove 31. The diameter of the power connection portion 42 is slightly smaller than the width of the wire slot on the fixed plate 2, allowing it to pass directly through and slide up and down with the sliding portion 41.

[0034] Step 3: Fabricate the rotating disk 3 of the drive plate. The rotating disk 3 is circular and features a recessed spiral guide groove 31. The inner surface of the spiral guide groove 31 is coated with a wear-resistant insulating material. One side of the rotating disk 3 is connected to the drive shaft 51 of the induction motor 5, allowing it to rotate with the induction motor 5. The sliding bolt 4 rotates with the rotating disk 3 and slides freely within the internal spiral guide groove 31.

[0035] Step 4: Make the fixed disk 2 of the drive disk 1. The fixed disk 2 is circular, and inside it is a concave, embedded linear guide groove 21. The inside of the guide groove 21 is coated with anti-wear insulating material. The fixed disk 2 needs to be fixed on the support frame 8, and the induction motor 5 also needs to be fixed. The fixed disk 2 cannot rotate. There is also a resistor 22 inside the guide groove 21. One end of the resistor 22 is connected to the wire 9, and the wire 9 is connected to the power supply. There is a layer of insulator between the connection between the resistor 22 and the fixed disk 2 to prevent leakage. The resistor 22 and the sliding bolt 4 are in contact and conductive. During the up and down sliding process of the sliding bolt 4, the current provides different currents to the induction motor 5 due to the different lengths of the resistor 22, so that the induction motor 5 can operate.

[0036] Step 5: Assemble the fixed disk 2 and rotating disk 3. Snap the fixed disk 2 and rotating disk 3 together, place the sliding bolt 4 in the guide groove 21 and the spiral guide groove 31, and connect the power supply and motor wires. Now, the fixed disk 2 and the housing of the induction motor 5 are connected and secured to the support frame 8. As the induction motor 5 rotates, it only drives the rotating disk 3, while the sliding bolt 4 moves within the spiral guide groove 31 and also moves up and down along the guide groove 21. During this movement, the current changes depending on the position of the contact resistor 22, thus affecting the torque of the induction motor 5.

[0037] Step 6: Connect the cable drum 6. Connect the cable drum 6 to the rotating disk 3 of the driving disk 1 so that the cable drum 6 can rotate together with the rotating disk 3 and the induction motor 5.

[0038] The cables 7 are all wound around the cable drum 6, and the drive drum 1 is also in the Figure 6 At this point, the machine has not yet started, the cables 7 are all wrapped around the cable drum 6, and the sliding bolt 4 is at its starting position. The resistor 22 is now at its maximum effectiveness, and the current flowing through it is very low. The induction motor 5 operates slightly, applying a very small torque to the entire cable drum 6, thus restraining the cable drum 6 and preventing the cables 7 from falling apart.

[0039] As the machine starts, it pulls along the cable 7 as it moves, causing the cable drum 6 to rotate and automatically unwind. The rotating disk 3 of the drive disk 1 also rotates, causing the sliding bolt 4 to slide within its spiral guide groove 31. During this sliding process, the fixed disk 2 does not rotate, and the sliding bolt 4 slides upward along the guide groove 21 within the fixed disk 2 to the middle position. At this point, the conductivity of the resistor 22 increases, increasing the current flowing through it. The induction motor 5 then increases its operating intensity, applying a greater torque to the entire cable drum 6. This torque forces the cable 7 between the cable drum 6 and the machine to an appropriate tension, naturally hanging at both ends. If the machine retracts at this point, this torque tightens the cable drum 6, allowing the cable 7 to be rewound in time. If the machine continues to move, the cable drum 6 continues to unwind, and the current flowing through the induction motor 5 continues to increase, gradually increasing the torque.

[0040] As the machine reaches the end of its travel, the sliding bolt 4 reaches the end of the resistor 22, causing the current to reach its maximum. The induction motor 5 operates at full capacity, exerting maximum torque on the entire device. This forces the cable drum 6 to its maximum, tightening the cable 7 between the drum 6 and the machine. As the machine retracts, the torque forces the cable drum 6 to rotate with the induction motor 5, continuously reeling in the cable. This torque continues until the machine returns to its starting point, at which point the drum returns to its original position, retracting all the cable 7.

[0041] The corresponding model of the device can be designed according to different machines and equipment and the length of the cable to be carried, which is mainly achieved by selecting the corresponding model of the induction motor 5 and designing the spiral guide groove 31 and the guide slide groove 21 of different lengths.

[0042] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present application. That is, all equivalent changes and modifications made within the scope of the present application should still fall within the scope of the present invention.

Claims

1. An automatic cable retractable device, comprising a support mechanism and a cable drum, wherein the cable drum is rotatably mounted on the support mechanism for winding the cable, and wherein: A driving disk is installed on the supporting mechanism. The driving disk includes a fixed disk and a rotating disk. The fixed disk is fixedly installed on the supporting mechanism. The rotating disk and the fixed disk are movably assembled and connected to a motor. The motor provides the rotating disk with a torque for retrieving the cable. The cable disk and the rotating disk are fixedly assembled to form a structure that can rotate synchronously. A current control structure is provided in the drive disk, and the motor is connected to the power supply through the current control structure to adjust the current input to the motor; The current control structure includes a sliding bolt made of a conductor and a resistor arranged in a fixed disk, the resistor is connected to a power supply through a wire, and the sliding bolt is in sliding contact with the resistor; A spiral guide groove in a spiral shape is provided in the rotating disk, and a straight guide groove is provided in the fixed disk; the sliding bolt is inserted into the guide groove and the spiral guide groove at the same time, and can be pushed to slide along the guide groove as the rotating disk rotates; The motor is an induction motor, which is electrically connected to a sliding bolt through a wire. The sliding bolt slides along the resistor sheet as the rotating disk rotates to change the connected resistance value to adjust the current input to the induction motor. The induction motor outputs different torques through different current inputs to provide to the cable reel to pull back the unwound cable.

2. The automatic cable retracting and retracting device according to claim 1, characterized in that: The resistor piece is arranged on the inner side wall of the guide slot, an insulating layer is arranged between the resistor piece and the fixed disk, and the resistance value of the resistor piece is changed by sliding the sliding bolt in the guide slot.

3. The automatic cable retracting and retracting device according to claim 2, characterized in that: The sliding bolt consists of two cylinders, one large and one small, which are an integrated structure. The large cylinder forms the sliding part, and the small cylinder forms the power connection part. The front end of the sliding part is inserted into the spiral guide groove of the rotating disk, and the rear end is embedded in the guide groove of the fixed disk. The power connection part passes through the guide groove and is connected to the induction motor through a wire.

4. The automatic cable retracting and retracting device according to claim 3, characterized in that: An anti-wear insulating layer is provided in the spiral guide groove to isolate the current of the sliding bolt.

5. The automatic cable retracting and releasing device according to claim 2, characterized in that: The spiral guide groove spirally extends from a position close to the center of the rotating disk to a position close to the edge of the rotating disk, and the guide groove radially extends from a position close to the center of the fixed disk to a position close to the edge of the fixed disk; the sliding starting point of the sliding bolt is close to the center of the fixed disk and the rotating disk, and the sliding end point is close to the edge of the fixed disk and the rotating disk.

6. The automatic cable retracting and releasing device according to claim 1, characterized in that: The supporting mechanism is a supporting frame, the fixed disk is vertically fixed on the supporting frame, and the cable disk is assembled and fixed to the rotating disk in a posture that the cable disk is axially perpendicular to the fixed disk.

7. The automatic cable retracting and releasing device according to claim 6, characterized in that: The induction motor is mounted on the rear end surface of the fixed disk through the connecting disk. The transmission shaft passes through the fixed disk and is connected and fixed to the rotating disk. A bearing is provided between the transmission shaft and the fixed disk.

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