Telescopic portable direct-current electricity testing and current clamping testing device suitable for photovoltaic power generation

Abstract

The utility model relates to the technical field of detection tools, in particular to a photovoltaic telescopic portable direct current electricity testing and current clamping detection device which comprises a holding tube, an extension tube is inserted into the upper end of the holding tube in a sliding mode, a current caliper meter body is fixedly connected to the upper end of the extension tube, and a display screen is fixedly connected to the outer wall of the holding tube. A wire used for being connected with the display screen of the current caliper meter body penetrates through the extension pipe and extends into an inner cavity of the holding pipe along an inner cavity of the extension pipe, a wire winding roller is rotationally arranged in the holding pipe, one end of the wire is wound around the wire winding roller, and the wire winding roller is connected with the display screen through an electricity connection assembly. According to the technical scheme of the utility model, when a telescopic detection tool in the prior art is used and the telescopic height of a clamp is adjusted, an overlong conductor wire is relatively disordered. And after the telescopic height of the clamp is adjusted, the opening and closing of the clamp are not easy to operate, so that the convenience of photovoltaic detection is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of detection tools, in particular to a retractable and convenient direct current electricity test and current card test device suitable for photovoltaics. Background Art

[0002] Photovoltaic is a new energy construction project supported by the state. Some photovoltaic power stations are built on various terrains such as mountains, water surfaces, salt fields, greenhouses, plains, etc. Because photovoltaic power stations need to comply with the nature of the land use, the design height of some photovoltaic power station components is relatively high, such as fish-photovoltaic complementarity, salt-photovoltaic complementarity, mountain photovoltaics, photovoltaic farming, offshore photovoltaics, etc. The inspection and maintenance of photovoltaic fault elimination are high-altitude operations, which are difficult to operate and have a high risk factor.

[0003] The prior art discloses a patent with a publication number of CN206920476U. The scheme includes a conductive clamp, an ammeter body, a traction cable and an insulating telescopic rod. The conductive clamp is arranged at the top of the insulating telescopic rod. The conductive clamp includes a fixed clamp foot and a movable clamp foot. The movable clamp foot is hinged with the fixed clamp foot. The ammeter body is arranged on the insulating telescopic rod. The insulating telescopic rod is provided with a main through hole and a spring. One end of the spring is fixed to the insulating telescopic rod. The other end of the spring is provided with a pressure body. One end of the traction cable is an upper fixed end. The other end of the traction cable is a lower control end. The upper fixed end is connected to the movable clamp foot. The traction cable passes through the pressure body and is connected to the pressure body. The spring is set outside the traction cable. The traction cable passes through the main through hole. The overall structure is reasonable, and it can effectively measure the current of wires at higher positions and wires in humid environments. There is no need to use climbing equipment. It is convenient to use, greatly reduces the work risk of the staff, and significantly improves the work efficiency.

[0004] As the existing devices are used, the shortcomings of the technology are gradually exposed, mainly in the following aspects:

[0005] First, when the existing telescopic detection tool is used, when adjusting the telescopic height of the clamp, the overly long conductive wire is relatively messy, affecting the convenience of photovoltaic detection.

[0006] Second, when using the existing telescopic detection tool, after adjusting the telescopic height of the clamp, it is difficult to operate the opening and closing of the clamp, which affects the convenience of photovoltaic detection.

[0007] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] In view of the defects in the prior art, the utility model solves the problems that when the telescopic detection tool in the traditional technology is in use, the excessively long conductive wires are rather messy when adjusting the telescopic height of the clamp; and after adjusting the telescopic height of the clamp, it is difficult to operate the opening and closing of the clamp, which affects the convenience of photovoltaic detection.

[0009] In order to solve the above problems, the utility model provides the following technical solutions:

[0010] A retractable and portable DC electrical testing and current card measuring device suitable for photovoltaics comprises a grip tube, an extension tube is slidably inserted into the upper end of the grip tube, a current caliper meter body is fixedly connected to the upper end of the extension tube, a display screen is fixedly connected to the outer wall of the grip tube, a wire for connecting the current caliper meter body to the display screen passes through the extension tube, extends along the inner cavity of the extension tube into the inner cavity of the grip tube, a wire winding roller is rotatably provided in the grip tube, one end of the wire is wound on the wire winding roller, and the wire winding roller is connected to the display screen via a power connection component.

[0011] As an optimized solution, a swing rod is hinged on the outer wall of the grip tube, and a traction wire winding roller is rotatably provided at the swing end of the swing rod. A traction wire is wound on the traction wire winding roller, and the other end of the traction wire extends upward along the outer walls of the grip tube and the extension tube, and is fixedly connected to the handle end of the current caliper meter body.

[0012] As an optimized solution, the power connection component includes a support tube fixedly connected to the inner wall of the grip tube, one end of the wire winding roller is rotatably mounted on the support tube, conductive rings are fixedly connected in parallel to the inner wall of the wire winding roller, the terminal wires of the wires are correspondingly connected to the wire rings, an elastic sheet is fixedly connected to the outer wall of the support tube corresponding to each of the conductive rings, the elastic sheet is in frictional contact with the conductive ring, and each of the elastic sheets is connected to the display screen via a connecting wire.

[0013] As an optimized solution, the other end of the wire winding roller is rotatably mounted on the inner wall of the grip tube via a rotating shaft, a coil spring is wound on the rotating shaft, and two ends of the coil spring are respectively against the grip tube and the wire winding roller.

[0014] As an optimized solution, a connecting plate is fixedly connected to the swing rod, a stop knob is threadedly connected to the connecting plate, a plurality of stop grooves are arranged on the outer end wall of the traction line winding roller, and the end of the stop knob abuts against the stop groove.

[0015] As an optimized solution, a drive sleeve is coaxially rotatably provided on the upper end of the grip tube, an external thread is provided on the outer wall of the extension tube, and a threaded sleeve connected to the external thread is fixedly connected to the inner wall of the drive sleeve.

[0016] As an optimized solution, a guide groove is vertically provided on the outer wall of the extension tube, and a guide block constrained in the guide groove is fixedly connected to the inner wall of the grip tube.

[0017] As an optimized solution, a limit ring is fixedly connected to the outer wall of the grip tube, and a ring groove matching the limit ring is formed on the inner wall of the drive sleeve.

[0018] As an optimized solution, a pull ring is fixedly connected to the swing rod.

[0019] As an optimized solution, a connecting ring connected to the traction line is fixedly connected to the handle end of the current caliper meter body.

[0020] As an optimized solution, guide rings are fixedly connected to the outer wall of the extension tube close to the upper end and the outer wall of the grip tube, respectively, and the traction line passes through the guide rings.

[0021] As an optimized solution, a side wall of the extension tube close to the upper end is provided with an escape hole for evading the wire.

[0022] As an optimized solution, a mounting groove is provided at the swinging end of the swing rod, and the two ends of the traction line winding roller are also rotatably installed on the relative inner walls of the mounting groove by means of a rotating shaft. A coil spring is also provided on the rotating shaft, and the two ends of the coil spring are respectively against the mounting groove and the traction line winding roller.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] When in use, by rotating the drive sleeve, the threaded sleeve, the guide groove and the guide block can be used to drive the extension tube to extend and retract, thereby matching different working heights;

[0025] One end of the wire is wound on the wire winding roller, and the other end is connected to the display screen through the power connection component, so that a force is applied to the wire winding roller under the action of the winding spring, so that the excess length of the wire can be wound to prevent the occurrence of clutter;

[0026] The excess length of the traction line can be wound by setting a traction line winding roller. After adjusting the extension length of the extension tube, the end of the stop knob is abutted against the stop groove to stop the traction line winding roller. Then, the pull ring is moved by fingers to drive the swing rod to swing, and then the traction line is used to drive the handle end of the current caliper meter body to swing, so as to control the opening and closing of the caliper of the current caliper meter body, which is convenient for operation.

[0027] After arriving at the corresponding area, there is no need to immediately climb up to check. Instead, use the equipment to test whether the fault is in this group of strings. No response from the tester means that there is no current in this group of strings. Then use calipers to measure the current to confirm that it is the component that is faulty. Then climb up to deal with it, saving a lot of time and manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0029] Figure 1 It is a schematic diagram of the structure of the utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the drive sleeve of the utility model;

[0031] Figure 3 It is a schematic structural diagram of the wire winding roller of the utility model.

[0032] In the figure: 1-grip tube; 2-extension tube; 3-current caliper meter body; 4-handle end; 5-traction wire; 6-avoidance hole; 7-drive sleeve; 8-swing rod; 9-pull ring; 10-display screen; 11-wire winding roller; 12-traction wire winding roller; 13-external thread; 14-threaded sleeve; 15-limiting ring; 16-guide groove; 17-guide block; 18-wire; 19-support tube; 20-conductive ring; 21-elastic sheet; 22-connecting wire; 23-rotating shaft; 24-coil spring. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0034] like Figures 1 to 3 As shown, a retractable and portable DC voltage test and current card measuring device suitable for photovoltaics comprises a grip tube 1, an extension tube 2 is slidably inserted into the upper end of the grip tube 1, a current caliper meter body 3 is fixedly connected to the upper end of the extension tube 2, a display screen 10 is fixedly connected to the outer wall of the grip tube 1, a wire 18 of the current caliper meter body 3 used to connect the display screen 10 passes through the extension tube 2, and extends along the inner cavity of the extension tube 2 to the inner cavity of the grip tube 1, a wire winding roller 11 is rotatably provided in the grip tube 1, one end of the wire 18 is wound on the wire winding roller 11, and the wire winding roller 11 is connected to the display screen 10 through an electrical connection component.

[0035] The model and specific structure of the current caliper meter body 3 are common in daily life. Since the specific structure does not belong to the innovation of this solution, it will not be described in detail here.

[0036] A swing rod 8 is hinged on the outer wall of the grip tube 1, and a traction wire winding roller 12 is rotatably provided at the swing end of the swing rod 8. A traction wire 5 is wound on the traction wire winding roller 12. The other end of the traction wire 5 extends upward along the outer walls of the grip tube 1 and the extension tube 2, and is fixedly connected to the handle end 4 of the current caliper meter body 3.

[0037] The power connection assembly includes a support tube 19 fixedly connected to the inner wall of the grip tube 1, one end of the wire winding roller 11 is rotatably mounted on the support tube 19, conductive rings 20 are fixedly connected in parallel to the inner wall of the wire winding roller 11, and the terminal wires of the wire 18 are correspondingly connected to the wire 18 rings. An elastic sheet 21 is fixedly connected to the outer wall of the support tube 19 corresponding to each conductive ring 20, and the elastic sheet 21 is in frictional contact with the conductive ring 20, and each elastic sheet 21 is connected to the display screen 10 through a connecting line 22.

[0038] The other end of the wire winding roller 11 is rotatably mounted on the inner wall of the grip tube 1 via a rotating shaft 23 . A coil spring 24 is wound on the rotating shaft 23 . Two ends of the coil spring 24 abut against the grip tube 1 and the wire winding roller 11 , respectively.

[0039] A connecting plate is fixedly connected to the swing rod 8, and a stop knob is threadedly connected to the connecting plate. A plurality of stop grooves are arranged on the outer end wall of the traction line winding roller 12, and the end of the stop knob abuts against the stop groove.

[0040] A driving sleeve 7 is coaxially rotatably provided at the upper end of the grip tube 1 , an external thread 13 is provided on the outer wall of the extension tube 2 , and a threaded sleeve 14 connected to the external thread 13 is fixedly connected to the inner wall of the driving sleeve 7 .

[0041] A guide groove 16 is vertically formed on the outer wall of the extension tube 2 , and a guide block 17 constrained in the guide groove 16 is fixedly connected to the inner wall of the grip tube 1 .

[0042] A limit ring 15 is fixedly connected to the outer wall of the grip tube 1 , and a ring groove matching the limit ring 15 is formed on the inner wall of the driving sleeve 7 .

[0043] A pull ring 9 is fixedly connected to the swing rod 8 .

[0044] A connecting ring for connecting a traction line 5 is fixedly connected to the handle end 4 of the current caliper meter body 3 .

[0045] Guide rings are fixedly connected to the outer wall of the extension tube 2 near the upper end and the outer wall of the grip tube 1, respectively, and the pulling line 5 passes through the guide rings.

[0046] A relief hole 6 for escaping the wire 18 is provided on the side wall of the extension tube 2 near the upper end.

[0047] A mounting groove is provided at the swinging end of the swing rod 8, and both ends of the traction line winding roller 12 are also rotatably mounted on the opposite inner walls of the mounting groove by means of a rotating shaft 23. A coil spring 24 is also provided on the rotating shaft 23, and both ends of the coil spring 24 are respectively against the mounting groove and the traction line winding roller 12.

[0048] The purpose of providing the coil spring 24 is to achieve automatic winding, and its working principle is the same as that of a tape measure.

[0049] The working principle of this device is:

[0050] When in use, by rotating the drive sleeve 7, the threaded sleeve 14, the guide groove 16 and the guide block 17 can be used to drive the extension tube 2 to extend and retract, thereby matching different working heights;

[0051] One end of the wire 18 is wound on the wire winding roller 11, and the other end is connected to the display screen 10 through the power connection component, so that a force is applied to the wire winding roller 11 under the action of the winding spring 24, so that the excess length of the wire 18 can be wound to prevent the occurrence of clutter;

[0052] By setting the traction line winding roller 12, the excess length of the traction line 5 can be wound. After adjusting the extension length of the extension tube 2, the end of the stop knob is abutted against the stop groove to stop the traction line winding roller 12. Then, by using the finger to pry the pull ring 9, the swing rod 8 is driven to swing, and then the traction line 5 is used to drive the handle end 4 of the current caliper meter body 3 to swing, so as to control the opening and closing of the caliper of the current caliper meter body 3, which is convenient for operation.

[0053] After arriving at the corresponding area, there is no need to immediately climb up to check. Instead, use the equipment to test whether the fault is in this group of strings. No response from the tester means that there is no current in this group of strings. Then use calipers to measure the current to confirm that it is the component that is faulty. Then climb up to deal with it, saving a lot of time and manpower.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A retractable and portable DC current test and current card measuring device suitable for photovoltaics, characterized by: The invention comprises a grip tube (1), an extension tube (2) being slidably inserted into the upper end of the grip tube (1), a current caliper meter body (3) being fixedly connected to the upper end of the extension tube (2), a display screen (10) being fixedly connected to the outer wall of the grip tube (1), a wire (18) for connecting the current caliper meter body (3) to the display screen (10) passing through the extension tube (2) and extending along the inner cavity of the extension tube (2) to the inner cavity of the grip tube (1), a wire winding roller (11) being rotatably provided in the grip tube (1), one end of the wire (18) being wound on the wire winding roller (11), and the wire winding roller (11) being connected to the display screen (10) via a power connection component.

2. The retractable and portable DC voltage test and current card measuring device suitable for photovoltaics according to claim 1 is characterized in that: A swing rod (8) is hinged on the outer wall of the grip tube (1), and a traction line winding roller (12) is rotatably provided at the swing end of the swing rod (8). A traction line (5) is wound on the traction line winding roller (12), and the other end of the traction line (5) extends upward along the outer walls of the grip tube (1) and the extension tube (2), and is fixedly connected to the grip end (4) of the current caliper meter body (3).

3. The retractable and portable DC voltage test and current card measuring device suitable for photovoltaics according to claim 2 is characterized in that: The power connection assembly comprises a support tube (19) fixedly connected to the inner wall of the grip tube (1); one end of the wire winding roller (11) is rotatably mounted on the support tube (19); conductive rings (20) are fixedly connected in parallel on the inner wall of the wire winding roller (11); the connecting wires of the wire (18) are correspondingly connected to the wire (18) rings; an elastic sheet (21) is fixedly connected to the outer wall of the support tube (19) corresponding to each of the conductive rings (20); the elastic sheet (21) is in frictional contact with the conductive ring (20); and each of the elastic sheets (21) is connected to the display screen (10) via a connecting line (22).

4. The retractable and portable DC voltage test and current card measuring device suitable for photovoltaics according to claim 3 is characterized in that: The other end of the wire winding roller (11) is rotatably mounted on the inner wall of the gripping tube (1) via a rotating shaft (23), a coil spring (24) is wound on the rotating shaft (23), and two ends of the coil spring (24) respectively abut against the gripping tube (1) and the wire winding roller (11).

5. The retractable and portable DC voltage test and current card measuring device suitable for photovoltaics according to claim 4 is characterized in that: The swing rod (8) is fixedly connected with a connecting plate, and a stop knob is threadedly connected to the connecting plate. The outer end wall of the traction line winding roller (12) is surrounded by a plurality of stop grooves, and the end of the stop knob abuts against the stop groove.

6. The retractable and portable DC voltage test and current card measuring device suitable for photovoltaics according to claim 5 is characterized in that: A drive sleeve (7) is coaxially rotatably provided at the upper end of the grip tube (1), an external thread (13) is provided on the outer wall of the extension tube (2), and a threaded sleeve (14) connected to the external thread (13) is fixedly connected to the inner wall of the drive sleeve (7).

7. The retractable and portable DC voltage test and current card measuring device suitable for photovoltaic applications according to claim 6 is characterized in that: A guide groove (16) is vertically provided on the outer wall of the extension tube (2), and a guide block (17) constrained in the guide groove (16) is fixedly connected to the inner wall of the grip tube (1).

8. The retractable and portable DC voltage test and current card measuring device suitable for photovoltaics according to claim 7 is characterized in that: A limiting ring (15) is fixedly connected to the outer wall of the grip tube (1), and a ring groove matching the limiting ring (15) is provided on the inner wall of the drive sleeve (7).

9. The retractable and portable DC voltage test and current card measuring device suitable for photovoltaics according to claim 8 is characterized in that: A pull ring (9) is fixedly connected to the swing rod (8).

10. The retractable and portable DC voltage test and current card measuring device suitable for photovoltaics according to claim 9, characterized in that: A connecting ring connected to the pulling line (5) is fixedly connected to the handle end (4) of the current caliper meter body (3).

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