Self-winding photovoltaic string EL test line convenient to use

Abstract

The utility model discloses a self-rolling photovoltaic string EL test line convenient to use, which comprises a test line body and a rolling box, an inner rod is fixed in the rolling box, a winding cylinder is sleeved on the outer wall of the inner rod, a clockwork spring is arranged in the winding cylinder, and one end of the clockwork spring is connected to the inner wall of the winding cylinder; according to the utility model, through the designed rolling box, the inner rod, the winding cylinder and the clockwork spring, the photovoltaic string EL test line is provided with the rolling box, a part of the test line is rolled on the winding cylinder, when the photovoltaic string EL test line is used, the test line at one end of the first line outlet hole is pulled, the test line is drawn out from the rolling box for use, and after the test line is used, the test line is taken out from the rolling box. The power spring in the deformation state releases elastic force to drive the winding cylinder to rotate, the winding cylinder pulls the test wire to rotate, the test wire is automatically wound on the winding cylinder to achieve automatic winding, storage and taking are convenient and fast, and efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the technical field of photovoltaic string EL test line, specifically relating to a self-winding photovoltaic string EL test line that is easy to use. Background Technology

[0002] In the EL testing of photovoltaic strings, the test line is a key component connecting the test equipment and the photovoltaic string. Traditional photovoltaic string EL test lines have defects in actual use: (1) The structural design of photovoltaic string EL test lines is often relatively simple and lacks an effective winding device. After the test is completed, the test line needs to be manually sorted and stored. This process is not only time-consuming and laborious, but also because the test line is usually long and soft, it is very easy to get tangled and knotted, which seriously affects the efficiency of subsequent use. Therefore, we propose a self-winding photovoltaic string EL test line that is easy to use. Utility Model Content

[0003] The purpose of this invention is to provide a self-winding photovoltaic string EL test cable that is easy to use, so as to solve the problems of inconvenient winding and low efficiency of photovoltaic string EL test cables mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a self-winding, easy-to-use photovoltaic string EL test cable, comprising a test cable body and a winding box. An inner rod is fixed inside the winding box, and a winding cylinder is sleeved on the outer wall of the inner rod. A spring is installed inside the winding cylinder, with one end of the spring connected to the inner wall of the winding cylinder and the other end connected to the surface of the inner rod. A wire-passing hole is provided on the surface of the winding cylinder, and a first wire-exit hole and a second wire-exit hole are respectively provided on the surface of the winding box. The test cable body is wound on the winding cylinder, and the test cable body passes through the first wire-exit hole, the wire-passing hole, and the second wire-exit hole in sequence.

[0005] Preferably, a main gear is fitted and fixed at one end of the winding cylinder, a rotatable reciprocating screw is provided inside the winding box, a secondary gear is fixed at one end of the reciprocating screw, the secondary gear and the main gear are connected by meshing, a swing block is provided inside the winding box, a drive hole is opened at one end of the swing block, the reciprocating screw passes through the drive hole, a drive block is provided in the groove on the surface of the reciprocating screw, the drive block is fixed inside the drive hole, and the other end of the swing block is stuck on the test lead body.

[0006] Preferably, one end of the inner rod is fitted with a support sleeve, and the support sleeve is fixed to the inner wall of the winding cylinder.

[0007] Preferably, the inner rod has a spherical groove on its surface, and a ball is embedded in the spherical groove.

[0008] Preferably, the longitudinal sections of the inner rod and the support tube are both circular, and the central axes of the inner rod and the support tube coincide with each other.

[0009] Preferably, two stops are fixed at one end of the test line body, and the two stops are symmetrically arranged about one side surface of the winding box.

[0010] Preferably, the outer wall of the winding cylinder is fitted with a rubber sleeve, and the rubber sleeve is fixedly connected to the winding cylinder by adhesive.

[0011] Preferably, the longitudinal sections of the winding box, inner rod, and winding cylinder are all circular, and the central axes of the winding box, inner rod, and winding cylinder coincide with each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) A winding box, inner rod, winding drum, and spring are designed to be installed on the EL test line of the photovoltaic string. A portion of the test line is wound onto the winding drum. When using the EL test line of the photovoltaic string, the test line at the first outlet hole is pulled to extract it from the winding box. After use, the spring in the deformed state releases its elasticity, driving the winding drum to rotate. The winding drum pulls the test line to rotate, so that the test line is automatically wound onto the winding drum to achieve automatic winding. This is convenient for storage and retrieval, and is highly efficient. Through the designed main gear, reciprocating screw, auxiliary gear, swing block, and drive block, the winding drum rotates... The main gear can be driven to rotate, and the main gear and the auxiliary gear mesh to drive the reciprocating screw to rotate. The reciprocating screw cooperates with the drive block in the groove, driving the swing block to move back and forth along the axis of the reciprocating screw. One end of the swing block is stuck on the test lead body, thereby driving the test lead to swing back and forth when winding, so that it is evenly wound on the winding drum. This effectively avoids the test lead being concentrated in one position on the winding drum, which would affect the winding. The designed support cylinder supports one end of the inner rod to prevent the winding drum from tilting when winding the test lead. The designed ball bearings reduce the friction force between the inner rod and the winding drum, making the winding drum rotate more smoothly under the elastic force of the spring. Attached Figure Description

[0014] Figure 1 This is the front view of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the winding cylinder, reciprocating lead screw and oscillating block of this utility model inside the winding box;

[0016] Figure 3 This is a side sectional view of the present invention;

[0017] Figure 4 This utility model Figure 3 Enlarged view of point A in the image;

[0018] Figure 5 This is a schematic diagram showing the spring of this utility model inside the winding cylinder;

[0019] In the diagram: 1. Test lead body; 2. Stop block; 3. Rewind box; 4. First outlet hole; 5. Rubber sleeve; 6. Winding cylinder; 7. Threading hole; 8. Second outlet hole; 9. Inner rod; 10. Spring; 11. Ball bearing; 12. Support cylinder; 13. Swing block; 14. Reciprocating screw; 15. Drive block; 16. Secondary gear; 17. Main gear; 18. Drive hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example

[0022] Please see Figures 1 to 5 This utility model provides a technical solution: a self-winding, easy-to-use photovoltaic string EL test cable, including a test cable body 1 and a winding box 3. An inner rod 9 is fixed inside the winding box 3, and a winding cylinder 6 is sleeved on the outer wall of the inner rod 9. A spring 10 is installed inside the winding cylinder 6, with one end of the spring 10 connected to the inner wall of the winding cylinder 6 and the other end connected to the surface of the inner rod 9. A wire-passing hole 7 is opened on the surface of the winding cylinder 6, and a first wire-exit hole 4 and a second wire-exit hole 8 are respectively opened on the surface of the winding box 3. The test cable body 1 is wound on the winding cylinder 6, and the test cable body 1 passes through the first wire-exit hole 4, the wire-passing hole 7, and the second wire-exit hole 8 in sequence. The winding box 3, the inner rod 9, and the winding cylinder 6 are all connected. All three components—winding cylinder 6, inner rod 9, winding cylinder 6, and spring 10—have circular cross-sections. The winding box 3, inner rod 9, winding cylinder 6, and spring 10 are designed to be installed on the photovoltaic string EL test line. Part of the test line is wound onto the winding cylinder 6. When using the photovoltaic string EL test line, the test line at the first outlet hole 4 is pulled to extract it from the winding box 3. After use, the spring 10, which is in a deformed state, releases its elasticity, driving the winding cylinder 6 to rotate. The winding cylinder 6 pulls the test line to rotate, automatically winding the test line onto the winding cylinder 6 for automatic winding. This facilitates storage and retrieval, resulting in high efficiency. Furthermore, the central axes of the winding box 3, inner rod 9, and winding cylinder 6 coincide.

[0023] In this embodiment, preferably, a main gear 17 is fixedly fitted to one end of the winding cylinder 6, and a rotatable reciprocating screw 14 is provided inside the winding box 3. A secondary gear 16 is fixed to one end of the reciprocating screw 14, and the secondary gear 16 and the main gear 17 are connected by meshing. A swing block 13 is provided inside the winding box 3, and a drive hole 18 is opened at one end of the swing block 13. The reciprocating screw 14 passes through the drive hole 18, and a drive block 15 is provided in the groove on the surface of the reciprocating screw 14. The drive block 15 is fixed inside the drive hole 18, and the other end of the swing block 13 is stuck on the test lead body 1. The device includes a main gear 17, a reciprocating lead screw 14, a secondary gear 16, a swing block 13, and a drive block 15. When the winding drum 6 rotates, it can drive the main gear 17 to rotate. The main gear 17 and the secondary gear 16 mesh and drive the reciprocating lead screw 14 to rotate. The reciprocating lead screw 14 and the drive block 15 located in the groove cooperate to drive the swing block 13 to move back and forth along the axial direction of the reciprocating lead screw 14. One end of the swing block 13 is stuck on the test lead body 1, thereby driving the test lead to swing back and forth when winding, so that it is evenly wound on the winding drum 6, effectively avoiding the test lead being concentrated in one position on the winding drum 6 and affecting the winding.

[0024] In this embodiment, preferably, one end of the inner rod 9 is fitted with a support cylinder 12. The support cylinder 12 is designed to support one end of the inner rod 9 to prevent the winding cylinder 6 from tilting when winding the test line. The support cylinder 12 is fixed on the inner wall of the winding cylinder 6. The longitudinal sections of the inner rod 9 and the support cylinder 12 are both circular structures, and the central axes of the inner rod 9 and the support cylinder 12 coincide with each other.

[0025] In this embodiment, preferably, the surface of the inner rod 9 is provided with a spherical groove, and a ball bearing 11 is embedded in the spherical groove. The ball bearing 11 is designed to reduce the frictional force between the inner rod 9 and the winding cylinder 6, so that the winding cylinder 6 rotates more smoothly under the elastic force of the spring 10.

[0026] In this embodiment, preferably, two blocks 2 are fixed at one end of the test lead body 1. The designed blocks 2 can fix one end of the test lead, and the two blocks 2 are symmetrically arranged about one side surface of the winding box 3.

[0027] In this embodiment, preferably, the outer wall of the winding cylinder 6 is fitted with a rubber sleeve 5. The rubber sleeve 5 is designed to increase the surface friction coefficient of the winding cylinder 6, making it less likely to slip when the winding cylinder 6 rotates to wind up the test line. The rubber sleeve 5 is fixedly connected to the winding cylinder 6 by adhesive.

[0028] The working principle and usage process of this utility model are as follows: A winding box 3 is installed on the photovoltaic string EL test line, and part of the test line is wound onto a winding drum 6. When using the photovoltaic string EL test line, the test line at one end of the first outlet hole 4 is pulled. When the test line is pulled, because part of the test line is pre-wound onto the winding drum 6, the winding drum 6 will rotate, causing the internal spring 10 to deform, thus pulling the test line out of the winding box 3 for use. After use, the deformed spring 10 releases its elasticity, driving the winding drum 6 to rotate. The winding drum 6 can... The main gear 17 is driven to rotate, and the main gear 17 and the auxiliary gear 16 mesh to drive the reciprocating screw 14 to rotate. The reciprocating screw 14 cooperates with the drive block 15 located in the groove, driving the swing block 13 to move back and forth along the axis of the reciprocating screw 14. One end of the swing block 13 is stuck on the test lead body 1, thereby driving the test lead to swing back and forth when winding, so that it is evenly wound on the winding drum 6. This effectively avoids the test lead being concentrated in one position on the winding drum 6, which would affect the winding. The winding drum 6 pulls the test lead to rotate, so that the test lead is automatically wound onto the winding drum 6 to achieve automatic winding, which is convenient to store and easy to pick up, and has high efficiency.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-winding, easy-to-use photovoltaic string EL test lead, comprising a test lead body (1) and a winding box (3), characterized in that: The winding box (3) has an inner rod (9) fixed inside. The outer wall of the inner rod (9) is fitted with a winding cylinder (6). The winding cylinder (6) is equipped with a spring (10). One end of the spring (10) is connected to the inner wall of the winding cylinder (6), and the other end of the spring (10) is connected to the surface of the inner rod (9). The surface of the winding cylinder (6) is provided with a threading hole (7). The surface of the winding box (3) is provided with a first wire outlet hole (4) and a second wire outlet hole (8). The test wire body (1) is wound on the winding cylinder (6), and the test wire body (1) passes through the first wire outlet hole (4), the threading hole (7), and the second wire outlet hole (8) in sequence.

2. The self-winding, easy-to-use photovoltaic string EL test cable according to claim 1, characterized in that: One end of the winding cylinder (6) is fitted with a main gear (17). The inside of the winding box (3) is provided with a rotatable reciprocating screw (14). One end of the reciprocating screw (14) is fixed with a secondary gear (16). The secondary gear (16) and the main gear (17) are connected by meshing. The inside of the winding box (3) is provided with a swing block (13). One end of the swing block (13) is provided with a drive hole (18). The reciprocating screw (14) passes through the inside of the drive hole (18). A drive block (15) is provided in the groove on the surface of the reciprocating screw (14). The drive block (15) is fixed inside the drive hole (18). The other end of the swing block (13) is stuck on the test lead body (1).

3. The self-winding, easy-to-use photovoltaic string EL test cable according to claim 1, characterized in that: One end of the inner rod (9) is fitted with a support cylinder (12), and the support cylinder (12) is fixed on the inner wall of the winding cylinder (6).

4. The self-winding, easy-to-use photovoltaic string EL test cable according to claim 3, characterized in that: The inner rod (9) has a spherical groove on its surface, and a ball (11) is embedded in the spherical groove.

5. The self-winding, easy-to-use photovoltaic string EL test lead according to claim 3, characterized in that: The longitudinal sections of the inner rod (9) and the support cylinder (12) are both circular, and the central axes of the inner rod (9) and the support cylinder (12) coincide.

6. The self-winding, easy-to-use photovoltaic string EL test cable according to claim 1, characterized in that: Two blocks (2) are fixed at one end of the test line body (1), and the two blocks (2) are symmetrically arranged about one side surface of the winding box (3).

7. The self-winding, easy-to-use photovoltaic string EL test cable according to claim 1, characterized in that: The outer wall of the winding cylinder (6) is fitted with a rubber sleeve (5), and the rubber sleeve (5) is fixedly connected to the winding cylinder (6) by adhesive.

8. The self-winding, easy-to-use photovoltaic string EL test cable according to claim 1, characterized in that: The longitudinal sections of the winding box (3), inner rod (9) and winding cylinder (6) are all circular, and the central axes of the winding box (3), inner rod (9) and winding cylinder (6) coincide with each other.

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