Pay-off auxiliary device for photovoltaic direct-current line

Abstract

The utility model provides a paying-off auxiliary device for a photovoltaic direct-current line, and belongs to the field of photovoltaic power station construction equipment, the paying-off auxiliary device comprises a supporting rod and a bearing, the bottom of the supporting rod is fixed to an inner ring of the bearing, a supporting arm assembly used for being connected with a wire coil is fixed to an outer ring of the bearing, a first winding rod is fixed to the lower portion of the supporting rod, and a second winding rod is fixed to the upper portion of the supporting rod; the first winding rod corresponds to the second winding rod up and down, and the first winding rod is located above the supporting arm assembly. The device is simple in structure and convenient to install, transport and store, fixed installation can be completed without moving a cable reel (wire coil), the pay-off auxiliary device can achieve stable and rapid pay-off of the wire coil, a person specially assigned on the ground is not needed for winding, manual participation is reduced, and the pay-off efficiency of the photovoltaic direct current wire is improved.

Description

Technical Field

[0001] The utility model belongs to the field of construction equipment for photovoltaic power stations, and particularly relates to an auxiliary device for laying photovoltaic DC lines. Background Technique

[0002] When laying photovoltaic DC lines, it is necessary to send a special person to first unwind the lines from the cable reels on the ground, which is prone to entanglement. When using a traditional portal cable laying rack, the cable reel needs to be laid down, and the installation efficiency is not high.

[0003] There is a publicly disclosed wire reel laying auxiliary device (patent application number: CN202223519253.9), which includes: a support rod, the support rod is formed as a rod-shaped member and at least one end is formed as a cylindrical shape; a winding bearing, the winding bearing is provided with an installation channel penetrating through its thickness, and the installation channel is sleeved on the cylindrical end of the support rod to rotate circumferentially along the axial direction of the support; a first winding rod, the first winding rod is fixedly arranged at one end of the winding bearing, a first porcelain ring is fixedly arranged at the end of the first winding rod away from the winding bearing, and a first wire passing hole penetrating through its thickness is arranged on the first porcelain ring.

[0004] This publicly disclosed solution improves the problem of cable entanglement and knotting during the laying process, but its connection with the wire reel is realized through a baffle and a bottom support shaft. The bottom support shaft is inserted into the central hole of the wire reel and cooperates with the baffle to achieve the connection. This connection method is unstable. For wire reels of different sizes, the diameter of the central hole is different. When it is too small, the bottom support shaft cannot be inserted. When it is too large, the bottom support shaft is unstable after being inserted and is prone to shaking during the laying process. The connection method has defects and the applicable range is limited. Summary of the Utility Model

[0005] This application provides an auxiliary device for laying photovoltaic DC lines, aiming to solve the problems that the connection method between the wire reel laying auxiliary device and the wire reel is unstable, there are connection defects when the size specifications of the wire reel change, and the applicable range is limited.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An auxiliary device for laying photovoltaic DC lines includes a support rod and a bearing. The bottom of the support rod is fixedly connected to the inner ring of the bearing, and a support arm assembly for connecting the wire reel is fixedly arranged on the outer ring of the bearing. A first winding rod is fixedly arranged at the lower part of the support rod, and a second winding rod is fixedly arranged at the upper part of the support rod. The first winding rod and the second winding rod are corresponding up and down, and the first winding rod is located above the support arm assembly;

[0008] The arm assembly includes a first arm and a second arm. The second arm is sleeved with the first arm and can extend or retract in the first arm. A clamping plate is connected to the end of the second arm, and a first fastener is installed in the area of the second arm near the clamping plate. The clamping plate cooperates with the first fastener to clamp the disc of the wire reel.

[0009] Preferably, a second fastener is installed at the end of the first arm away from the bearing, and the second fastener rotates to lock or loosen the second arm.

[0010] Preferably, the number of arm assemblies is three, and the three arm assemblies are arranged at intervals of 120 degrees.

[0011] Preferably, the shape of the clamping plate is L-shaped.

[0012] Preferably, a third winding rod is provided below the first winding rod. The length of the first winding rod is greater than the radius of the disc, the length of the radius of the disc is greater than the length of the second winding rod, and the third winding rod is located outside the circumference of the disc.

[0013] Preferably, the first winding rod is provided with a first winding hole, and a first pulley for facilitating the unwinding of the photovoltaic DC wire is hinged to the first winding hole. The third winding rod is provided with a third winding hole, and a third pulley for facilitating the unwinding of the photovoltaic DC wire is hinged to the third winding hole.

[0014] Preferably, the second winding rod is provided with a second winding hole, and a second pulley for facilitating the unwinding of the photovoltaic DC wire is hinged to the second winding hole.

[0015] Preferably, a winding coil is provided on the upper part of the support rod, and the winding coil is located above the second winding rod.

[0016] The utility model has the following beneficial effects:

[0017] (1) The structure of the device is simple, which is convenient for installation, transportation and storage. The fixed installation can be completed without moving the cable reel (wire reel). The wire unwinding auxiliary device can realize the stable and rapid unwinding of the wire reel, eliminating the need for a dedicated person on the ground to wind the wire, reducing manual participation and increasing the unwinding efficiency of the photovoltaic DC wire.

[0018] (2) In this solution, the connection with the wire reel is realized by clamping the disc of the wire reel with the arm assembly. The arm assembly mainly consists of a first arm, a second arm and a clamping plate. The lengths of the first arm and the second arm can be adjusted to adapt to wire reels with different radius lengths. Moreover, after the clamping plate and the first fastener cooperate, they can clamp the disc of the wire reel, which can be applied to discs with different thicknesses. This connection structure can be applied to wire reels of different sizes and specifications, with a wider application range. And the connection is through a clamping method, which is more stable and has a better fixing effect, beneficial to the stability of wire unwinding. Description of the Drawings

[0019] Figure 1This is a schematic diagram of the structure of the wire-releasing auxiliary device in the utility model;

[0020] Figure 2 for Figure 1 A partial enlarged view of the middle A area;

[0021] Figure 3 for Figure 1 A partial enlarged view of area B.

[0022] Among them, 1-winding coil, 2-second winding rod, 21-second winding hole, 22-second pulley, 3-support rod, 4-bearing, 5-arm assembly, 51-first arm, 511-second fastener, 52-second arm, 521-first fastener, 53-clamp, 6-photovoltaic DC line, 7-reel, 8-first winding rod, 81-first winding hole, 82-first pulley, 9-third winding rod, 91-third winding hole, 92-third pulley. DETAILED DESCRIPTION

[0023] Example 1

[0024] like Figures 1 - 3 As shown, a photovoltaic DC line laying auxiliary device includes a support rod 3 and a bearing 4, the bottom of the support rod 3 is fixed to the inner ring of the bearing 4, the outer ring of the bearing 4 is fixed with an arm assembly 5 for connecting a cable drum 7, the lower part of the support rod 3 is fixed with a first winding rod 8, the upper part of the support rod 3 is fixed with a second winding rod 2, the first winding rod 8 corresponds to the second winding rod 2 up and down, and the first winding rod 8 is located above the arm assembly 5;

[0025] The arm assembly 5 includes a first arm 51 and a second arm 52. The second arm 52 is sleeved with the first arm 51 and extends out or retracts in the first arm 51. A clamping plate 53 is connected to the end of the second arm 52. A first fastener 521 is installed in the area of ​​the second arm 52 near the clamping plate 53. The clamping plate 53 cooperates with the first fastener 521 to clamp the circular disc of the wire reel 7.

[0026] Compared with the first arm 51, the second arm 52 can be extended or retracted, so as to adjust the length of the arm assembly 5 to adapt to discs of different radii; the clamping plate 53 is clamped with the disc after cooperating with the first fastener 521, and can be suitable for discs of different thicknesses.

[0027] A second fastener 511 is installed at one end of the first arm 51 away from the bearing 4 , and the second fastener 511 is rotated to lock or loosen the second arm 52 .

[0028] The second fastener 511 is threadedly connected to the first arm 51 .

[0029] The number of the arm assemblies 5 is three, and the three arm assemblies 5 are arranged at intervals of 120 degrees. Figure 1As shown, one of the arm assemblies 5 is blocked by the support rod 3.

[0030] The three arm assemblies 5 together fix the wire laying auxiliary device on the disc of the wire reel 7.

[0031] The clamping plate 53 is L-shaped.

[0032] The lower part of the first winding rod 8 is provided with a third winding rod 9. The length of the first winding rod 8 is greater than the radius of the disc, the length of the radius of the disc is greater than the length of the second winding rod 2, and the third winding rod 9 is located outside the circumference of the disc.

[0033] The first winding rod 8 is provided with a first winding hole 81, and a first pulley 82 for facilitating the wire laying of the photovoltaic DC wire 6 is hinged to the first winding hole 81. The third winding rod 9 is provided with a third winding hole 91, and a third pulley 92 for facilitating the wire laying of the photovoltaic DC wire 6 is hinged to the third winding hole 91.

[0034] The second winding rod 2 is provided with a second winding hole 21, and a second pulley 22 for facilitating the wire laying of the photovoltaic DC wire 6 is hinged to the second winding hole 21.

[0035] The third pulley 92, the first pulley 82 and the second pulley 22 can increase the smoothness during the wire laying process and can avoid the situation of wire skin damage caused by the friction between the photovoltaic DC wire 6 and the winding holes during the wire laying process.

[0036] The working principle of this device:

[0037] First, clamp and connect the arm assembly 5 to the disc of the wire reel 7, then pull out the photovoltaic DC wire 6 of the wire reel 7, pass it through the third winding hole 91, the first winding hole 81 and the second winding hole 21 in sequence, and then under the sliding action of the third pulley 92, the first pulley 82 and the second pulley 22, carry out wire laying stably, and under the action of the bearing 4, it can rotate freely at any angle during the wire laying process.

[0038] Embodiment 2

[0039] The difference between this embodiment and Embodiment 1 is that: as Figure 1 shown, a winding coil 1 is provided on the upper part of the support rod 3, and the winding coil 1 is located above the second winding rod 2.

[0040] The photovoltaic DC wire 6 finally passes through the winding coil 1 and then is used for continuous wire laying.

[0041] Embodiment 3

[0042] The difference between this embodiment and Embodiment 1 is that: the number of the arm assemblies 5 is four.

[0043] The four arm assemblies 5 are evenly distributed, with an interval of ninety degrees.

[0044] The above are only specific embodiments of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A photovoltaic DC line laying auxiliary device, comprising a support rod (3) and a bearing (4), wherein the bottom of the support rod (3) is fixed to the inner ring of the bearing (4), and is characterized in that: An arm assembly (5) for connecting a wire drum (7) is fixed to the outer ring of the bearing (4); a first wire winding rod (8) is fixed to the lower part of the support rod (3); a second wire winding rod (2) is fixed to the upper part of the support rod (3); the first wire winding rod (8) corresponds to the second wire winding rod (2) in upper and lower positions, and the first wire winding rod (8) is located above the arm assembly (5); The support arm assembly (5) comprises a first support arm (51) and a second support arm (52); the second support arm (52) is sleeved with the first support arm (51) and is extended or retracted in the first support arm (51); a clamping plate (53) is connected to the end of the second support arm (52); a first fastener (521) is installed in an area of ​​the second support arm (52) close to the clamping plate (53); the clamping plate (53) cooperates with the first fastener (521) to clamp the circular disc of the wire reel (7).

2. A photovoltaic DC line laying auxiliary device according to claim 1, characterized in that: A second fastener (511) is installed at one end of the first support arm (51) away from the bearing (4), and the second fastener (511) is rotated to lock or loosen the second support arm (52).

3. A photovoltaic DC line laying auxiliary device according to claim 2, characterized in that: The number of the arm assemblies (5) is three, and the three arm assemblies (5) are arranged at intervals of 120 degrees.

4. A photovoltaic DC line laying auxiliary device according to any one of claims 1 to 3, characterized in that: The shape of the clamping plate (53) is L-shaped.

5. A photovoltaic DC line laying auxiliary device according to claim 1, characterized in that: A third winding rod (9) is provided at the lower part of the first winding rod (8); the length of the first winding rod (8) is greater than the length of the radius of the disk; the length of the radius of the disk is greater than the length of the second winding rod (2); and the third winding rod (9) is located outside the circumference of the disk.

6. A photovoltaic DC line laying auxiliary device according to claim 5, characterized in that: The first winding rod (8) is provided with a first winding hole (81), and the first winding hole (81) is hinged with a first pulley (82) for facilitating the release of the photovoltaic DC line (6). The third winding rod (9) is provided with a third winding hole (91), and the third winding hole (91) is hinged with a third pulley (92) for facilitating the release of the photovoltaic DC line (6).

7. A photovoltaic DC line laying auxiliary device according to claim 1, characterized in that: The second winding rod (2) is provided with a second winding hole (21), and the second winding hole (21) is hingedly connected with a second pulley (22) for facilitating the unwinding of the photovoltaic DC line (6).

8. A photovoltaic DC line laying auxiliary device according to claim 1, characterized in that: A winding coil (1) is provided on the upper part of the support rod (3), and the winding coil (1) is located above the second winding rod (2).

Images