Mobile wire coil for load connection in voltage transformer error test

Abstract

The utility model discloses a movable wire coil for load connection in a voltage transformer error test, which comprises a frame, pulleys are arranged at four corners of the lower surface of the frame, a wire winding component is arranged in the frame, a cable is arranged on the outer surface of the wire winding component, two ends of the cable are respectively a load instrument connection end and a voltage transformer connection end, and the load instrument connection end and the voltage transformer connection end are respectively connected with the frame. A patch board is fixedly installed on one side of the frame, the load instrument connecting end is electrically connected to the patch board so as to be used for being connected with a load box and a calibration instrument, and the voltage transformer connecting end is provided with multiple sets of first aviation plugs so as to be used for being in butt joint with a voltage transformer; and the limiting mechanism is arranged on one side of the patch board. The secondary wiring terminal is suitable for secondary wiring terminals of voltage transformers with different shapes and sizes, can effectively prevent the problem that when the cable is pulled to the end, a second aviation plug, a single-stage air switch and other structures connected to the cable are together pulled down or broken, and improves the practicality.

Description

Technical Field

[0001] The utility model belongs to the technical field of voltage transformer error testing, and in particular relates to a mobile wire drum for load connection of voltage transformer error testing. Background Art

[0002] When performing an on-site error test on a voltage transformer, a wire reel is required. The wire reel is wound with a cable, and the secondary wiring terminals of the voltage transformer are connected to test instruments such as a load box through the cable.

[0003] However, there are some problems with the prior art: the secondary terminals of voltage transformers produced by different manufacturers have different shapes and sizes. However, when the existing cable reel encounters the above-mentioned situation, the cable is generally connected to the secondary terminal by screws. This connection method is not only troublesome but also inefficient. In addition, the existing cable reel does not have a structure to limit one end of the cable. As a result, when the cable is pulled to the end, the fixed structure connected to one end of the cable is easily torn off or broken. There are certain limitations. Therefore, we propose a mobile cable reel for load connection for voltage transformer error testing. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a mobile wire reel for load connection of voltage transformer error testing. Through multiple groups of first aviation plugs, it is suitable for secondary wiring terminals of voltage transformers of different shapes and sizes. Through the limiting mechanism, it can effectively prevent the second aviation plug and single-stage air switch connected to the cable from being pulled off or broken when the cable is pulled to the end, thereby improving practicality.

[0005] The utility model is implemented as follows: a mobile cable tray for load connection of voltage transformer error test, comprising:

[0006] A frame, wherein pulleys are arranged at the four corners of the lower surface of the frame, a winding component is arranged inside the frame, a cable is arranged on the outer surface of the winding component, and the two ends of the cable are respectively connected to a load instrument end and a voltage transformer end, a wiring board is fixedly installed on one side of the frame, the load instrument end is electrically connected to the wiring board for connecting with a load box and a calibrator, and the voltage transformer end is provided with a plurality of first aviation plugs for docking with a voltage transformer;

[0007] A limiting mechanism is arranged on one side of the wiring board, and one end of the cable is plugged into the limiting mechanism to limit the one end of the cable.

[0008] Optionally, the limiting mechanism comprises a fixed block, a movable block is slidably installed in the fixed block, a wire-releasing hole is provided in the movable block, and the cable is plugged into the wire-releasing hole.

[0009] Optionally, a docking rod is provided on one side of the inner wall of the fixed block, a docking groove is provided on one side of the movable block, and the docking rod is slidably connected to the docking groove.

[0010] Optionally, a first clamping block is provided on one side of the fixed block, a notch is provided on the other side of the movable block, the first clamping block is clamped in the notch, a second clamping block is provided on one side of the movable block, and the second clamping block is arranged corresponding to the notch.

[0011] Optionally, return springs are provided at both upper and lower ends of the first clamping block, one end of the return spring is fixedly mounted on one side of the fixed block, and an adjustment rod is fixedly mounted on the upper surface of the first clamping block.

[0012] Optionally, a groove is provided on the upper surface of the movable block, a spring column is arranged in the groove, a through hole is provided on the upper surface of the inner wall of the fixed block, and the spring column is engaged with the through hole.

[0013] Optionally, a pressure rod is slidably installed in the through hole, a disc is provided at the upper end of the pressure rod, telescopic rods are provided on both sides of the lower surface of the disc, one end of the telescopic rod is fixedly installed on the upper surface of the fixed block, and the lower end of the pressure rod is arranged in upper and lower correspondence with the spring column.

[0014] Optionally, a handle is provided on one side of the wiring board, a second aviation plug is provided on the wiring board, a second plug-in standard accessory is electrically connected to the second aviation plug, a second male head of the second aviation plug is connected to a load instrument end of the cable, a second female head is provided on one side of the wiring board, and the second female head is connected to the second plug-in standard accessory;

[0015] The wiring board is also provided with a plurality of groups of single-stage air switches, and the plurality of groups of single-stage air switches are electrically connected to the second aviation plugs respectively.

[0016] Optionally, one side of the multiple groups of first aviation plugs are electrically connected to a first plug-in standard accessory, wherein the first male head of one group of the first aviation plugs is connected to the voltage transformer end of the cable, and the first female heads of the multiple groups of the first aviation plugs are electrically connected to the multiple groups of first plug-in standard accessories respectively.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model provides multiple sets of first aviation plugs, which are respectively multiple sets of plugs of different types, thereby effectively solving the problem that when testing voltage transformers produced by different manufacturers, there is no need to pay attention to the different shapes and sizes of the secondary terminals of the voltage transformer, thereby improving work efficiency.

[0019] 2. Through the limiting mechanism provided in the utility model, before use, one end of the cable is passed through the limiting mechanism, and the limiting mechanism limits the force on one end of the cable, thereby effectively preventing the second aviation plug and the single-stage air switch connected to the cable from being torn off or broken when the cable is pulled to the end, thereby improving practicality.

[0020] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram provided by the utility model;

[0022] Figure 2 It is a schematic diagram of the framework provided by the utility model;

[0023] Figure 3 It is a schematic diagram of the winding component provided by the utility model;

[0024] Figure 4 It is a schematic diagram of the limiting mechanism provided by the utility model;

[0025] Figure 5 It is a schematic diagram of a fixing block provided by the utility model;

[0026] Figure 6 It is a schematic diagram of the activity block provided by the utility model;

[0027] Figure 7 It is a circuit connection schematic diagram provided by the utility model.

[0028] In the figure: 1, frame; 2, pulley; 3, winding component; 4, cable; 5, wiring board; 6, second female plug; 7, second aviation plug; 8, single-stage air switch; 9, handle; 10, hook; 11, limit mechanism; 1101, fixed block; 1102, movable block; 1103, wire release hole; 1104, through hole; 1105, pressure rod; 1106, docking groove; 1107, docking rod; 1108, first clamping block; 1109, telescopic rod; 1110, adjustment rod; 1111, reset spring; 1112, notch; 1113, second clamping block; 1114, spring column; 12, first aviation plug; 1201, first plug-in standard accessory; 1202, first male plug; 1203, first female plug. DETAILED DESCRIPTION

[0029] In order to further understand the content, features and effects of the utility model, the following embodiments are listed and described in detail with reference to the accompanying drawings.

[0030] like Figures 1 to 7As shown, an embodiment of the utility model provides a mobile cable tray for load connection for voltage transformer error testing, comprising:

[0031] A frame 1, pulleys 2 are arranged at the four corners of the lower surface of the frame 1, a winding component 3 is arranged inside the frame 1, a cable 4 is arranged on the outer surface of the winding component 3, and the two ends of the cable 4 are respectively connected to the load instrument end and the voltage transformer end. A wiring board 5 is fixedly installed on one side of the frame 1, and the load instrument end is electrically connected to the wiring board 5 for connecting with the load box and the calibrator, and a plurality of first aviation plugs 12 are arranged at the voltage transformer end for connecting with the voltage transformer;

[0032] Specifically, Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, the load instrument end of the cable 4 is connected to the wiring board 5, and the voltage transformer end of the cable 4 is provided with a plurality of groups of first aviation plugs 12, and the plurality of groups of first aviation plugs 12 are respectively a plurality of groups of plugs of different types, thereby effectively solving the problem that when testing voltage transformers produced by different manufacturers, there is no need to care about the different shapes and sizes of the secondary terminals of the voltage transformer, thereby improving work efficiency.

[0033] Furthermore, a limiting mechanism 11 is provided on one side of the wiring board 5, and one end of the cable 4 is plugged into the limiting mechanism 11 to limit the position of one end of the cable 4;

[0034] Specifically, Figures 2 to 6 As shown, before use, the end of the cable 4 that needs to be connected to the wiring board 5 is passed through the limiting mechanism 11, and the limiting mechanism 11 limits the force on one end of the cable 4, thereby effectively preventing the second aviation plug 7 and the single-stage air switch 8 connected to the cable 4 from being torn off or broken when the cable 4 is pulled to the end, thereby improving practicality.

[0035] Furthermore, the limiting mechanism 11 includes a fixed block 1101, a movable block 1102 is slidably installed in the fixed block 1101, a wire-releasing hole 1103 is provided in the movable block 1102, and the cable 4 is plugged into the wire-releasing hole 1103; a docking rod 1107 is provided on one side of the inner wall of the fixed block 1101, a docking groove 1106 is provided on one side of the movable block 1102, and the docking rod 1107 is slidably connected to the docking groove 1106;

[0036] Specifically, Figure 3 and Figure 4As shown, the connecting rod 1107 and the connecting groove 1106 are slidably connected. When in use, the movable block 1102 is pulled out of the fixed block 1101 for a distance, and then one end of the cable 4 is inserted into the wire hole 1103 to connect with the wiring board 5, thereby achieving the effect of facilitating positioning and installation.

[0037] Furthermore, a first clamping block 1108 is provided on one side of the fixed block 1101, and a notch 1112 is provided on the other side of the movable block 1102. The first clamping block 1108 is clamped in the notch 1112. A second clamping block 1113 is provided on one side of the movable block 1102. The second clamping block 1113 is provided corresponding to the notch 1112.

[0038] Specifically, Figures 4 to 6 As shown, when the movable block 1102 slides toward one end due to an external force, when the slot 1112 coincides with the first clamping block 1108, the first clamping block 1108 will slide toward the second clamping block 1113, and the two groups will dock to limit the cable 4. When the cable 4 continues to be pulled, the cable 4 will no longer slide, thereby limiting and fixing the cable 4 to avoid the problem of pulling off or breaking the second aviation plug 7 and the single-stage air switch 8 connected to the cable 4.

[0039] Furthermore, the first clamping block 1108 is provided with a return spring 1111 at both ends, one end of the return spring 1111 is fixedly mounted on one side of the fixed block 1101, and an adjustment rod 1110 is fixedly mounted on the upper surface of the first clamping block 1108;

[0040] Specifically, Figure 5 As shown, when the first clamping block 1108 contacts the outer side of the movable block 1102, the movable block 1102 will be subjected to force on the first clamping block 1108, so that the first clamping block 1108 is pressed against the outside. However, when the movable block 1102 is subjected to force and slides, the first clamping block 1108 corresponds to the notch 1112, and the movable block 1102 can no longer be subjected to force on the first clamping block 1108. At this time, the first clamping block 1108 will extend into the movable block 1102 through the notch 1112 via the reset spring 1111, thereby achieving the effect of automatic limiting.

[0041] The adjustment rod 1110 above the first clamping block 1108 can be used as a reset structure, which is convenient for the staff to reset the first clamping block 1108, and at the same time can make it convenient for the staff to know the effect of extending the cable 4 to the limit.

[0042] Furthermore, a groove is formed on the upper surface of the movable block 1102, a spring column 1114 is disposed in the groove, a through hole 1104 is formed on the upper surface of the inner wall of the fixed block 1101, and the spring column 1114 is engaged with the through hole 1104;

[0043] Specifically, Figure 5 and Figure 6 As shown, the movable block 1102 moves a certain distance, so that the spring column 1114 at the groove above the movable block 1102 corresponds to the through hole 1104 in the upper and lower directions, and one end of the spring column 1114 is inserted into the through hole 1104, and cooperates with the first clamping block 1108 to perform a second limit on the movable block 1102, so that it cannot move, thereby achieving the secondary limit through the spring column 1114, making it easy to further solve the problem of pulling off or breaking the second aviation plug 7 and the single-stage air switch 8 connected to the cable 4, thereby reducing unnecessary losses.

[0044] Furthermore, a pressure rod 1105 is slidably installed in the through hole 1104, a disc is provided at the upper end of the pressure rod 1105, telescopic rods 1109 are provided on both sides of the lower surface of the disc, one end of the telescopic rod 1109 is fixedly installed on the upper surface of the fixed block 1101, and the lower end of the pressure rod 1105 is arranged correspondingly to the spring column 1114;

[0045] Specifically, Figure 4 and Figure 5 As shown, after the spring column 1114 is inserted into the through hole 1104, the telescopic rod 1109 is cooperated to slowly push the pressure rod 1105 outward. When resetting the spring column 1114, it is only necessary to press the pressure rod 1105 downward to make the spring column 1114 retract downward, thereby completing the resetting of the spring column 1114, thereby achieving the effect of convenient use.

[0046] Further, a handle 9 is provided on one side of the wiring board 5, a second aviation plug 7 is provided on the wiring board 5, a second plug-in standard accessory is electrically connected to the second aviation plug 7, a second male head of the second aviation plug 7 is connected to the load instrument end of the cable 4, a second female head 6 is provided on one side of the wiring board 5, and the second female head 6 is connected to the second plug-in standard accessory; a plurality of groups of single-stage air switches 8 are also provided on the wiring board 5, and the plurality of groups of single-stage air switches 8 are electrically connected to the second aviation plug 7 respectively;

[0047] Specifically, Figure 1 , Figure 2 and Figure 7 As shown, the connection and disconnection between the load instrument end of the cable 4 and the load box and the calibrator is realized by the quick plugging and unplugging of the second aviation plug 7. Different windings of the voltage transformer are distinguished by wires of different colors, which avoids errors due to multiple wiring and improves the wiring speed. In actual use, the female head of the second aviation plug 7 can also be connected to the load instrument end of the cable 4, and the male head of the second aviation plug 7 can be connected to the second plug-in standard accessory.

[0048] When the load box is short-circuited or other wiring errors occur, the single-stage air switch 8 is turned on to work, which can effectively avoid the effect of damage to the voltage transformer.

[0049] Further, one side of the multiple groups of first aviation plugs 12 is electrically connected to the first plug-in standard accessories 1201, wherein the first male plug 1202 of one group of first aviation plugs 12 is connected to the voltage transformer end of the cable 4, and the first female plugs 1203 of the multiple groups of first aviation plugs 12 are electrically connected to the multiple groups of first plug-in standard accessories 1201 respectively;

[0050] Specifically, Figure 2 and Figure 7 As shown, the first plug-in standard accessory 1201 can be a cylindrical plug, a plug blade or a pin plug, so that the first aviation plug 12 is electrically connected to the first plug-in standard accessory 1201 through the cooperation of the first male head 1202 and the first female head 1203, thereby achieving the purpose of being suitable for different types of voltage transformer secondary terminals.

[0051] It should be noted that, in actual use, the first female plug 1203 of the first aviation plug 12 can also be connected to the voltage transformer end of the cable 4, and the first male plugs 1202 of the three first aviation plugs 12 can be connected to the three first plug-in standard accessories 1201 respectively.

[0052] A hook 10 is provided on the outer surface of the cable 4 near the end connected to the voltage transformer. When the cable 4 is connected, it is hung on the base of the voltage transformer through the hook 10, which improves the safety of the operation compared with the traditional method of manually winding the cable 4 on the secondary junction box.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mobile cable tray for load connection for voltage transformer error testing, characterized in that: include: A frame (1), wherein pulleys (2) are arranged at four corners of the lower surface of the frame (1), a winding component (3) is arranged inside the frame (1), a cable (4) is arranged on the outer surface of the winding component (3), and two ends of the cable (4) are respectively connected to a load instrument end and a voltage transformer end, a wiring board (5) is fixedly installed on one side of the frame (1), the load instrument end is electrically connected to the wiring board (5) for connecting to a load box and a calibration instrument, and a plurality of first aviation plugs (12) are arranged on the voltage transformer end for connecting to the voltage transformer; A limiting mechanism (11) is arranged on one side of the wiring board (5), and one end of the cable (4) is plugged into the limiting mechanism (11) to limit the position of one end of the cable (4).

2. The mobile cable drum for load connection of voltage transformer error test according to claim 1, characterized in that: The limiting mechanism (11) comprises a fixed block (1101), a movable block (1102) is slidably mounted in the fixed block (1101), a wire-releasing hole (1103) is provided in the movable block (1102), and the cable (4) is plugged into the wire-releasing hole (1103).

3. The mobile cable drum for load connection of voltage transformer error test according to claim 2, characterized in that: A docking rod (1107) is provided on one side of the inner wall of the fixed block (1101), and a docking groove (1106) is provided on one side of the movable block (1102), and the docking rod (1107) is slidably connected to the docking groove (1106).

4. The mobile cable drum for load connection of voltage transformer error test according to claim 3, characterized in that: A first clamping block (1108) is provided on one side of the fixed block (1101), and a notch (1112) is provided on the other side of the movable block (1102), wherein the first clamping block (1108) is snapped into the notch (1112), and a second clamping block (1113) is provided on one side of the movable block (1102), wherein the second clamping block (1113) is arranged corresponding to the notch (1112).

5. The mobile cable drum for load connection of voltage transformer error test according to claim 4, characterized in that: The first clamping block (1108) is provided with a return spring (1111) at both upper and lower ends, one end of the return spring (1111) is fixedly mounted on one side of the fixed block (1101), and an adjustment rod (1110) is fixedly mounted on the upper surface of the first clamping block (1108).

6. The mobile cable drum for load connection of voltage transformer error test according to claim 5, characterized in that: The upper surface of the movable block (1102) is provided with a groove, and a spring column (1114) is arranged in the groove. The upper surface of the inner wall of the fixed block (1101) is provided with a through hole (1104), and the spring column (1114) is engaged with the through hole (1104).

7. The load connection movable reel for voltage transformer error test according to claim 6, characterized in that: A pressure rod (1105) is slidably installed in the through hole (1104), a disc is arranged at the upper end of the pressure rod (1105), telescopic rods (1109) are arranged on both sides of the lower surface of the disc, one end of the telescopic rod (1109) is fixedly installed on the upper surface of the fixed block (1101), and the lower end of the pressure rod (1105) is arranged in upper and lower correspondence with the spring column (1114).

8. The mobile cable drum for load connection of voltage transformer error test according to claim 1, characterized in that: A handle (9) is provided on one side of the wiring board (5), a second aviation plug (7) is provided on the wiring board (5), a second plug-in standard accessory is electrically connected to the second aviation plug (7), a second male head of the second aviation plug (7) is connected to the load instrument end of the cable (4), and a second female head (6) is provided on one side of the wiring board (5), and the second female head (6) is connected to the second plug-in standard accessory; The wiring board (5) is also provided with a plurality of groups of single-stage air switches (8), and the plurality of groups of single-stage air switches (8) are electrically connected to the second aviation plug (7) respectively.

9. The load connection movable reel for voltage transformer error test according to claim 1, characterized in that: One side of the plurality of first aviation plugs (12) is electrically connected to a first plug-in standard accessory (1201), wherein a first male plug (1202) of a group of the first aviation plugs (12) is connected to a voltage transformer end of the cable (4), and a first female plug (1203) of a plurality of first aviation plugs (12) is electrically connected to a plurality of first plug-in standard accessories (1201) respectively.

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