Winding device and winding method of cable for direct current charging pile

Abstract

The invention discloses a winding device of a cable for a direct current charging pile, and belongs to the technical field of cable winding, the winding device comprises a supporting device, a rotating device, a twisting device and a control system, the control system can control the rotating device and the twisting device, the rotating device can drive a cable reel to rotate, and the cable can penetrate through the twisting device to be installed on the cable reel. The twisting device can twist the cable; the rotating device is transversely placed at one end of the supporting device, the twisting device is arranged on one side of the rotating device in the horizontal direction, and the length of the twisting device can be adjusted. According to the cable winding device, the rotating device can drive the cable reel to rotate, a cable can be wound on the cable reel when the cable reel rotates, a certain twisting force is applied to the cable through the twisting device before the cable is wound on the cable reel, and the situation that the cable is twisted when the cable is wound on the cable reel, and the cable is damaged due to long-time storage is avoided.

Description

Technical Field

[0001] The invention relates to a winding device and a winding method for a cable for a DC charging pile, belonging to the technical field of cable winding. Background Art

[0002] When charging new energy vehicles, DC charging piles are needed to charge the vehicles. The cables in the DC charging piles need to be stored during the production process. The cables are prone to twisting when stored in the cable reel. The twisted cable insulation layer is prone to wear and tear. There is a certain loss to the overall production of the cable. At present, after the cable for DC charging piles is manufactured, the cable needs to be stored. The cable is twisted during storage in the cable reel. The twisted cable is prone to damage. When the cable is pulled out of the cable reel, the twisted cable is prone to receive greater torque, affecting the quality of the cable. Sometimes it gets stuck in the cable reel, increasing the difficulty of operation, and the wire is prone to stronger mechanical loads. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a winding device and a winding method for a cable for a DC charging pile, which solves the problem that the cable of the DC charging pile is prone to twisting when stored, resulting in cable damage.

[0004] The technical problem to be solved by the present invention is achieved by adopting the following technical solution: A winding device for a cable for a DC charging pile, comprising

[0005] Support device, rotating device, torsion device, control system,

[0006] The supporting device is provided with the twisting device, the rotating device and the cable reel.

[0007] The control system is capable of controlling the rotating device and the twisting device.

[0008] The rotating device can drive the cable reel to rotate, the cable can pass through the twisting device and be installed on the cable reel, and the twisting device can twist the cable;

[0009] The rotating device is placed horizontally at one end of the supporting device, and the twisting device is arranged on one side of the rotating device in the horizontal direction, and the length of the twisting device can be adjusted;

[0010] The control system includes a PLC, and the control system is capable of controlling the operating parameters of the rotating device and the twisting device.

[0011] Preferably, the rotating device comprises a supporting roller and a rotating motor, the supporting roller can carry a cable reel, the rotating motor is arranged inside the supporting roller, and the rotating motor can drive the supporting roller to rotate.

[0012] Preferably, the torsion device comprises a telescopic rod, a clamping assembly, and a servo motor. The clamping assembly is arranged on the top of the telescopic rod, and the servo motor is connected to the clamping assembly.

[0013] Preferably, the clamping assembly is capable of fixing the cable, and the servo motor is capable of rotating the clamping assembly to eliminate the torsional force of the cable installed on the cable reel.

[0014] Preferably, the clamping assembly comprises a cylinder, a clamping plate, and a guide rail, the clamping plate can move along the guide rail, the cylinder can drive the clamping plate to fit or separate on the guide rail, there are two clamping plates, and the clamping plates can clamp the cable when fitted.

[0015] Preferably, a rubber ring is provided on the inner side of the clamping plate.

[0016] A winding method of a winding device for a DC charging pile cable, preferably characterized by:

[0017] Step 1: Fix the cable reel on the supporting device;

[0018] Step 2: Pass the cable to be fixed through the twisting device, and the twisting device fixes the cable;

[0019] Step 3: A certain torque is applied to the cable through the twisting device, and the cable rotates the cable reel through the rotating device, so that the cable is set on the cable reel.

[0020] Preferably, in step 2, the control system is capable of controlling the power of the cylinder to prevent the cable from being locked between the clamping plates.

[0021] Preferably, in step 3, the torsional force applied to the cable cannot stop the process of fixing the cable in the torsion device.

[0022] The beneficial effects of the present invention are:

[0023] (1) Through the present invention, the rotating device can drive the cable reel to rotate, and the cable reel can be wound onto the cable reel when rotating. Before the cable is wound onto the cable reel, a certain torque is applied to the cable by the twisting device to prevent the cable from twisting when it is wound onto the cable reel, thereby preventing the cable from being damaged by long-term storage.

[0024] (2) According to the present invention, the torsion device includes a clamping assembly and a servo motor. The servo motor can drive the clamping assembly to rotate in one direction, thereby eliminating the torque of the cable wound on the cable reel.

[0025] (3) Through the present invention, the clamping assembly includes a cylinder, a clamping plate, and a guide rail. The clamping plate can move along the guide rail. The cylinder drives the clamping plate to fit or separate on the guide rail. A rubber ring is also provided between the clamping plates to prevent the cable and the clamping assembly from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a side structural schematic diagram of the present invention.

[0028] In the figure: 1-support device, 2-rotating device, 21-support roller, 22-rotating motor, 3-torsion device, telescopic rod 31, 32-clamping assembly, 4-cable reel. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

[0030] Example 1

[0031] like Figure 1-Figure 2 shown.

[0032] A winding device for a cable for a DC charging pile comprises a supporting device 1, a rotating device 2, a twisting device 3, and a control system. The supporting device 1 is provided with the rotating device 2 and the twisting device 3, and the control system is arranged in the supporting device 1 to control the rotating device 2 and the twisting device 3.

[0033] The rotating device 2 can drive the cable reel 4 fixed on the supporting device 1 to rotate, and the cable can pass through the twisting device 3 and be installed on the cable reel 4, and the cable reel 4 can twist the cable.

[0034] The rotating device 2 comprises a supporting roller 21 and a rotating motor 22 , wherein the supporting roller 21 can carry and fix the cable reel, and the rotating motor 22 can drive the supporting roller 21 to rotate when started.

[0035] The torsion device 3 includes a telescopic rod 31, a clamping assembly 32, and a servo motor, wherein the servo motor is arranged inside the telescopic rod 31 and connected to the clamping assembly 32. The length of the telescopic rod 31 can be adjusted, and the clamping assembly 32 is arranged on the top of the telescopic rod 31. The clamping assembly 32 is driven by the servo motor and can rotate in any direction.

[0036] Reference Figure 1 , Figure 2The supporting device 1 includes a bracket parallel to the ground, one end of the bracket extends upward, a horizontal supporting roller 21 is arranged on the side of the extended bracket, a rotating motor 22 is arranged on the other side of the supporting roller 21, and the rotating motor 22 can drive the supporting roller 21 to rotate. A hollow hole is arranged inside the cable reel 4, and a rod cooperating with the supporting roller 21 is arranged on the surface of the supporting shaft 21. The supporting roller 21 can fix the cable reel 4 through the rod to prevent the cable reel 4 from sliding on the supporting roller 21.

[0037] The bracket at the top extends to one side, and the extended bracket is provided with a support foot supporting downward, and a twisting device 3 is provided on the plane of the support foot, and the twisting device 3 is on the same horizontal plane as the support roller 21. When the cable for the DC charging pile is wound on the cable reel, a large angle between the cable and the reel can be avoided to affect the efficiency of the cable winding.

[0038] In this embodiment, the telescopic rod 31 of the torsion device 3 can adjust its length in the axial direction with the support roller 21. When the cables are wound on the cable reel 4, they will gradually stack up. The stacked cables are prone to mechanical damage. In the process of stacking, they are subjected to weight pressure. Without taking protective measures, the cables rub against each other, causing damage to the cable insulation layer, resulting in the risk of leakage, short circuit or electric shock. After long-term stacking, the cable body is prone to deformation, affecting the electrical conductivity of the cable. By adjusting the length of the telescopic rod 31, it can be ensured that the cables are wound on the cable reel 4 without stacking up.

[0039] The outer side of the clamping assembly 32 is fixed to the end of the telescopic rod 31 away from the supporting device 1, and is connected to the servo motor. The servo motor can control the clamping assembly 32 to rotate in one direction. The clamping assembly 32 includes a cylinder, a clamping plate, and a guide rail. The cylinder can drive the clamping plate to move along the guide rail. There are two clamping plates, one of which is fixed on one side and the other clamping plate moves along the guide rail. High-pressure gas is set inside the cylinder. Under the push of the high-pressure gas, the movable clamping plate can be attached to the fixed clamping plate along the guide rail, and the middle of the clamping plate after attachment can pass through the cable that needs to be fixed on the cable reel 4.

[0040] In this embodiment, a rubber ring is provided on the inner side of the clamping plate. After the cable passes through the clamping plate, the cylinder can fit the clamping plate, and the rubber ring provided between the clamping plate and the cable can prevent the cable from sliding. In addition, the rubber ring is provided with wave patterns in the axial direction, and the wave patterns can reduce the resistance of the cable when passing through the clamping assembly 32. The wave patterns can ensure the torque applied by the clamping assembly to the cable, and prevent the cable from sliding between the clamping assembly and the cable.

[0041] The control device is connected to the rotating device 2 and the twisting device 3, wherein the control device includes a PLC, which can control the operating parameters of the rotating device 2 and the twisting device 3 and adjust the working power of the rotating device 2 and the twisting device 3 according to the operating parameters.

[0042] After the cable is manufactured, it needs to be stored in the cable reel 4. The cable reel 4 is rotated to wind the cable into the cable reel 4. At this time, the rotating motor 22 rotates to drive the support roller 21 to rotate, and the support roller 21 drives the cable reel 4 to rotate. When the cable is wound on the cable reel 4, the cable first passes through the twisting device 3, and a certain torque is applied to the cable by the twisting device 3 to resist the twisting of the cable when it is wound on the cable reel 4.

[0043] The specific winding method is:

[0044] Step 1: Fix the support device 1 on a plane, fix the cable reel 4 on the support roller 21 on the support device 1, and match the rod of the support roller 21 with the hole on the cable reel 4 to ensure that the cable reel 4 can be driven to rotate when the support roller 21 rotates. ;

[0045] Step 2: Pass the cable to be placed on the cable reel 4 through the twisting device 3 and use the clamping assembly 32 to fix the cable.

[0046] Step 3: A certain torque is applied to the cable through the twisting device 3 , and at the same time, the rotating motor 22 is started to drive the supporting roller 21 to rotate, so that the cable is wound on the cable reel 4 .

[0047] In the above steps, the control device controls the rotation speed of the rotating motor 22, the torque of the servo motor inside the twisting device 3, and the pressure between the clamping plates inside the clamping assembly 32. In step 2, the pressure inside the clamping assembly 32 is achieved by adjusting the cylinder pressure to avoid excessive pressure between the clamping plates of the clamping assembly 32, which causes the cable to be locked between the two clamping plates; or too little pressure between the clamping plates of the clamping assembly 32, which causes the cable to not be twisted, and the cable still twists when it is wound on the cable reel 4, resulting in a poor winding effect.

[0048] During the cable winding process, a rubber ring with a wavy pattern is provided on the inner side of the clamping assembly 32, which can increase the longitudinal torque exerted on the cable. The axial force of the cable is consistent with the wavy pattern, which can ensure that the cable will not stop when passing through the clamping assembly 32, that is, when the cable passes through the torsion device 3.

[0049] A method for calculating the torque of a torsion device 3 is provided:

[0050] When the cable is twisted, a torsional moment will be generated inside. The magnitude of the moment is related to the shear modulus of the cable material and the torsion angle, specifically:

[0051]

[0052] Where T is the torque, G is the shear modulus of the material, and J is the polar inertia torque of the cable section.

[0053] For circular cross-section

[0054]

[0055] in is the diameter of the cable, θ is the torsion angle, L is the length of the cable, 32 is a constant,

[0056] During the calculation, the diameter of the cable The length L and the shear modulus G of the material can be measured. When the cable is wound onto the cable reel, the torque of the torsion device is

[0057]

[0058] The above formula can be used to derive the torque required by the torsion device 3 when the torsion angle θ of the cable is constant.

[0059] The diameters of the cables of the produced DC charging piles are consistent. When the cables need to be placed on the cable reel 4, the torsion angle θ of the cables is fixed. In this embodiment, the detection is performed by marking tracking, that is, marking the surface of the cable and measuring the angle deviation after rotation. The angle of torsion of the cable during winding is measured, and the torque required to be provided by the torsion device 3 is calculated.

[0060] In the actual production process, adjustments are made based on the errors generated during measurement and calculation to avoid reducing the winding effect of the cable.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cable winding device for a DC charging pile, comprising: Support device, rotating device, torsion device, control system, The supporting device is provided with the twisting device, the rotating device and the cable reel. The control system is capable of controlling the rotating device and the twisting device. Features: The rotating device can drive the cable reel to rotate, the cable can pass through the twisting device and be installed on the cable reel, and the twisting device can twist the cable; The rotating device is placed horizontally at one end of the supporting device, and the twisting device is arranged on one side of the rotating device in the horizontal direction, and the length of the twisting device can be adjusted; The control system includes a PLC, and the control system is capable of controlling the operating parameters of the rotating device and the twisting device.

2. The winding device for a cable for a DC charging pile according to claim 1, characterized in that: The rotating device comprises a supporting roller and a rotating motor. The supporting roller can bear a cable reel. The rotating motor is arranged at one side of the supporting roller and can drive the supporting roller to rotate.

3. The winding device for a cable for a DC charging pile according to claim 1, characterized in that: The torsion device comprises a telescopic rod, a clamping assembly and a servo motor. The clamping assembly is arranged on the top of the telescopic rod, and the servo motor is connected to the clamping assembly.

4. The winding device for a cable for a DC charging pile according to claim 3, characterized in that: The clamping assembly can fix the cable, and the servo motor can rotate the clamping assembly to eliminate the torsion force of the cable installed on the cable reel.

5. The winding device for a cable for a DC charging pile according to claim 3, characterized in that: The clamping assembly includes a cylinder, a clamping plate, and a guide rail. The clamping plate can move along the guide rail. The cylinder can drive the clamping plate to fit or separate on the guide rail. There are two clamping plates, and the clamping plates can clamp the cable after fitting.

6. A winding device for a cable for a DC charging pile according to claim 5, characterized in that: A rubber ring is arranged inside the clamping plate, and wave patterns are arranged in the axial direction of the rubber ring.

7. A winding method of a winding device for a DC charging pile cable, wherein the winding method of a winding device for a DC charging pile cable is implemented by using the winding device for a DC charging pile cable according to any one of claims 1 to 6, characterized in that: Step 1: Fix the cable reel on the supporting device; Step 2: Pass the cable to be fixed through the twisting device, and the twisting device fixes the cable; Step 3: A certain torque is applied to the cable through the twisting device, and the cable rotates the cable reel through the rotating device, so that the cable is set on the cable reel.

8. The winding method of the winding device for a DC charging pile cable according to claim 7, characterized in that: In step 2, the control system can control the power of the cylinder to prevent the cable from locking between the cleats.

9. The winding method of the winding device for a DC charging pile cable according to claim 7, characterized in that: In step 3, the corrugation of the rubber ring can reduce the obstruction encountered by the cable when passing through the clamping assembly.

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