Portable insulation megger box

Abstract

The utility model relates to the technical field of insulating megger boxes, in particular to a portable insulating megger box, which comprises a box body, a crank arranged on one side of the box body, an E-end grounding binding post and an L-end binding post which are arranged on one side, far away from the crank, of the box body, and two conducting strips, the two conducting strips are rotationally connected with the E-end grounding binding post and the L-end binding post respectively; the shell is arranged on the box body and is used for protecting the E-end grounding binding post and the L-end binding post; the self-checking unit is arranged in the shell, is connected with the two conducting strips and is used for driving the two conducting strips to rotate oppositely when self-checking is carried out before use, according to the portable insulation megger box, a worker can control work of the self-checking unit in a pressing mode, frequent rotation of the box body is avoided, and the working efficiency is improved. Meanwhile, the situation that the two test rods are separated due to loose connection in the rotating process is avoided, and the self-checking test accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of insulating megger boxes, in particular to a portable insulating megger box. Background Art

[0002] The megohm meter box, also known as the megohm meter, is a megohm meter used to measure the insulation resistance of various electrical equipment to avoid accidents. This megohm meter used to measure insulation resistance is convenient and reliable, and is therefore widely used in various industries. Before using the megohm meter box, the instrument needs to be self-checked to ensure normal use of the instrument.

[0003] However, we found in actual use that when the existing megohmmeter box is used for self-test, the megohmmeter box is generally placed horizontally on the table, and then the side of the megohmmeter box with the E-end grounding terminal and the L-end terminal is turned to the front, and the E-end grounding terminal and the L-end terminal are connected using a test rod to perform a short-circuit test. After the connection is completed, the megohmmeter box is rotated again so that the side with the crank handle is turned to the front, and then the crank handle is turned to observe the rotation of the meter pointer; after this inspection is completed, the megohmmeter box needs to be rotated twice, and then the crank handle is turned again to observe the rotation of the meter pointer. Not only are the operating steps cumbersome and increase the working time of the staff, but also during the rotation process, the two test rods may be detached due to loose connection, thereby reducing the accuracy of the self-test. For this reason, we propose a portable insulating megohmmeter box. Utility Model Content

[0004] A technical problem to be solved by the present application is: how to design a shaking meter box to assist staff in self-inspection work.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a portable insulating megger box, comprising a box body, a crank disposed on one side of the box body, and an E-end grounding terminal and an L-end terminal disposed on a side of the box body away from the crank handle, and also comprising a conductive sheet, wherein two conductive sheets are provided, and the two conductive sheets are rotatably connected to the E-end grounding terminal and the L-end terminal respectively;

[0006] A housing, which is arranged on the box body and is used to protect the E-terminal grounding terminal and the L-terminal terminal;

[0007] A self-checking unit, which is arranged in the housing and connected to the two conductive sheets, is used to drive the two conductive sheets to rotate towards each other when performing a self-check before use, so that the E-end grounding terminal and the L-end terminal are short-circuited and open-circuited, thereby completing the instrument self-checking work;

[0008] A fixed box, wherein the fixed box is arranged on one side of the box body;

[0009] A pressing control unit is arranged in a fixed box and connected with the self-checking unit, so that a staff can control the operation of the self-checking unit by pressing.

[0010] In some embodiments, the self-test unit includes a rubber block arranged on a conductive sheet, a spring 1 is arranged on the rubber block, an end of the spring 1 is connected to the outer shell, a test rod for detection is arranged on both conductive sheets, and an extrusion member for driving the two conductive sheets to rotate synchronously is arranged on the outer shell.

[0011] In some embodiments, the extrusion member includes a sliding sleeve disposed on the outer shell, a radial rod is slidably disposed in the sliding sleeve, and the radial rod is in a Y-shaped structure near a side of the conductive sheet.

[0012] In some embodiments, the fixing box is in an L-shaped structure, with one end of the fixing box close to the radial rod and the other end close to the crank.

[0013] In some embodiments, the pressing control unit includes a shift rod slidably arranged on the side of the fixed box close to the outer radial rod, an adjustment component for driving the shift rod to move is arranged in the fixed box, and a pressing component for manual operation by a staff is arranged on the side of the fixed box close to the crank.

[0014] In some embodiments, the adjustment assembly includes a wedge block disposed at one end of the shift rod close to the radial rod, the wedge block is in contact with the radial rod, and a spring 2 for driving the shift rod to reset is disposed in the fixed box.

[0015] In some embodiments, the pressing assembly includes two movable rods slidably arranged in a fixed box, buttons are arranged at the ends of the movable rods, a spring three is arranged in the fixed box for driving the movable rods to reset, a connecting plate is arranged at one end of the shift rod away from the radial rod, a first bevel groove and a second bevel groove are arranged on the connecting plate for respectively cooperating with adjacent movable rods, pressing any movable rod causes the connecting plate to shift and lock, and pressing the other movable rod realizes unlocking.

[0016] In some embodiments, a slot is provided on the conductive sheet, and an upper cover is rotatably provided on the housing.

[0017] The utility model has at least the following beneficial effects:

[0018] 1. It enables the staff to control the operation of the self-test unit by pressing, avoiding the frequent rotation of the box and the separation of the two test rods due to loose connection during the rotation, which is conducive to improving the accuracy of the self-test;

[0019] 2. The setting of the self-test unit avoids the connection and separation of the line during self-test, as well as the connection between the test rod and the E-end grounding terminal and the L-end terminal. The twisting work when connecting with the E-end grounding terminal and the L-end terminal is cancelled, which is conducive to improving the self-test efficiency of the staff and thus saving the time spent on self-test;

[0020] 3. The button is set on one side of the crank, so that the connection and disconnection of the measuring rod can be solved on the same side, that is, the short circuit and short circuit required for self-test are realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 For this utility model Figure 1 Schematic diagram of the local cross-section structure;

[0023] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure of the middle A area;

[0024] Figure 4 It is a schematic diagram of the structure of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0026] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of the present utility model;

[0027] Figure 7 It is a schematic diagram of the partial structure of the self-inspection unit of the utility model.

[0028] In the figure: 1. Box body; 2. Crank; 3. E-end grounding terminal; 4. L-end terminal; 5. Self-test unit; 51. Rubber block; 52. Spring one; 53. Test rod; 6. Extrusion piece; 61. Sliding sleeve; 62. Radial rod; 7. Press control unit; 71. Shift rod; 8. Adjustment assembly; 81. Wedge block; 82. Spring two; 9. Press assembly; 91. Movable rod; 92. Button; 93. Spring three; 94. Connecting plate; 95. First inclined slot; 96. Second inclined slot; 10. Housing; 11. Fixed box; 12. Card slot; 13. Upper cover; 14. Conductive sheet. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1

[0031] See also Figure 1-5 , the utility model provides a technical solution:

[0032] A portable insulating megohmmeter box comprises a box body 1, a crank handle 2 arranged at one side of the box body 1, and an E-end grounding terminal 3 and an L-end terminal 4 arranged at a side of the box body 1 away from the crank handle 2, and further comprises a conductive sheet 14, two conductive sheets 14 are provided, and the two conductive sheets 14 are rotatably connected to the E-end grounding terminal 3 and the L-end terminal 4 respectively. The box body 1 is a common existing structure and will not be described in detail herein.

[0033] The housing 10 is disposed on the box body 1 and is used to protect the E-end grounding terminal 3 and the L-end terminal 4;

[0034] A self-test unit 5 is provided in the housing 10 and connected to the two conductive sheets 14. The self-test unit 5 is used to drive the two conductive sheets 14 to rotate toward each other when performing a self-test before use, so that the E-end grounding terminal 3 and the L-end terminal 4 are short-circuited and open-circuited, thereby completing the instrument self-test work;

[0035] The self-test unit 5 includes a rubber block 51 disposed on the conductive sheet 14, a spring 1 52 is disposed on the rubber block 51, and the end of the spring 1 52 is connected to the housing 10. A test rod 53 for detection is disposed on each of the two conductive sheets 14, and an extrusion member 6 for driving the two conductive sheets 14 to rotate synchronously is disposed on the housing 10. The rubber block 51 is to prevent the spring 1 52 from affecting the conductivity of the conductive sheet 14, thereby ensuring the accuracy of the self-test work;

[0036] The extrusion member 6 includes a sliding sleeve 61 disposed on the housing 10, and a radial rod 62 is slidably disposed in the sliding sleeve 61. The radial rod 62 is Y-shaped near the conductive sheet 14. When the radial rod 62 moves upward, the conductive sheet 14 pulled by the spring 1 52 will be lifted and rotated, and then they will be close to each other and fit together.

[0037] A fixed box 11, which is arranged on one side of the box body 1;

[0038] The fixed box 11 is L-shaped, with one end of the fixed box 11 close to the radial rod 62 and the other end close to the crank 2. This design allows the button 92 to be located on one side of the crank 2, which is convenient for the operator to operate.

[0039] A pressing control unit 7, which is disposed in the fixed box 11 and connected to the self-test unit 5, so that the staff can control the operation of the self-test unit 5 by pressing;

[0040] The pressing control unit 7 includes a shift rod 71 slidably arranged on a side of the fixed box 11 close to the outer radial rod 62, an adjusting component 8 for driving the shift rod 71 to move is arranged in the fixed box 11, and a pressing component 9 for manual operation by a staff is arranged on a side of the fixed box 11 close to the crank 2;

[0041] The adjustment assembly 8 includes a wedge block 81 disposed at one end of the shift rod 71 close to the radial rod 62, the wedge block 81 is in contact with the radial rod 62, and a spring 82 for driving the shift rod 71 to return to its original position is disposed in the fixed box 11;

[0042] The pressing assembly 9 includes two movable rods 91 slidably arranged in the fixed box 11, and buttons 92 are arranged at the ends of the movable rods 91. A spring 93 for driving the movable rods 91 to return to their original position is arranged in the fixed box 11. A connecting plate 94 is arranged at the end of the shift rod 71 away from the radial rod 62. The connecting plate 94 is provided with a first inclined groove 95 and a second inclined groove 96 respectively used in conjunction with adjacent movable rods 91. Pressing any movable rod 91 causes the connecting plate 94 to shift and lock, and pressing the other movable rod 91 realizes unlocking. In actual use, the two buttons 92 can be marked to quickly find the movable rod 91 with a self-locking function. Of course, the position of the fixed box 11 can also be selected according to user habits. The figure shows only the case where the fixed box 11 is located on one side.

[0043] When in use, place the box 1 horizontally on the table, press the movable rod 91 with a self-locking function, and compress the spring 3 93 during the process. The end will squeeze the second inclined slot 96, so that the shift rod 71 and the wedge block 81 move, and the radial rod 62 is lifted, so that the two conductive sheets 14 are close to each other and fit together. At this time, a short circuit test is performed, and the crank 2 is turned to observe the rotation of the instrument pointer;

[0044] Then press the other movable rod 91, compressing the spring three 93 in the process, and the end will squeeze the first inclined slot 95, so that the shift rod 71 and the wedge block 81 move, and the movable rod 91 with a self-locking function will automatically reset under the action of the spring three 93 to achieve unlocking. Because the first inclined slot 95 cannot lock the movable rod 91, it will also reset under the action of the spring three 93 after being released, so that the radial rod 62 and the wedge block 81 are reset synchronously under the action of the spring two 82, and the radial rod 62 is reset under the action of gravity, and the conductive sheet 14 is pulled apart under the action of the spring one 52. At this time, the radial circuit is tested, and the crank 2 is turned to observe the rotation of the instrument pointer.

[0045] Example 2

[0046] See also Figure 6-7 , which is different from Example 1, a card slot 12 is provided on the conductive sheet 14, and an upper cover plate 13 is rotatably provided on the housing 10. The provision of the card slot 12 allows the staff to install the conductive sheet 14 without completely unscrewing the E-end grounding terminal 3 and the L-end terminal 4, thereby simplifying the screwing work when connecting with the E-end grounding terminal 3 and the L-end terminal 4, which is conducive to helping the conductive sheet 14 to be quickly connected. At the same time, the notch of the card slot 12 is provided at the middle and lower part, so that the conductive sheet 14 will not fall off when it rotates; the provision of the upper cover plate 13 is to assist in the installation of the conductive sheet 14.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] 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 portable insulating megohmmeter box, comprising a box body (1), a crank handle (2) arranged on one side of the box body (1), and an E-terminal grounding terminal (3) and an L-terminal terminal (4) arranged on a side of the box body (1) away from the crank handle (2), characterized in that: It also includes a conductive sheet (14), wherein two conductive sheets (14) are provided, and the two conductive sheets (14) are rotatably connected to the E-end grounding terminal (3) and the L-end terminal (4) respectively; A housing (10), the housing (10) being arranged on the box body (1) and used for protecting the E-end grounding terminal (3) and the L-end terminal (4); A self-test unit (5), the self-test unit (5) being arranged in the housing (10) and connected to the two conductive sheets (14), and being used for driving the two conductive sheets (14) to rotate towards each other when performing a self-test before use, so that the E-end grounding terminal (3) and the L-end terminal (4) are short-circuited and open-circuited, thereby completing a self-test of the instrument; A fixed box (11), wherein the fixed box (11) is arranged on one side of the box body (1); A pressing control unit (7) is arranged in a fixed box (11) and connected to the self-test unit (5), so that a worker can control the operation of the self-test unit (5) by pressing.

2. The portable insulation megger box according to claim 1 is characterized in that: The self-test unit (5) comprises a rubber block (51) arranged on a conductive sheet (14), a spring (52) being arranged on the rubber block (51), an end of the spring (52) being connected to the housing (10), a test rod (53) for detection being arranged on each of the two conductive sheets (14), and an extrusion member (6) for driving the two conductive sheets (14) to rotate synchronously being arranged on the housing (10).

3. The portable insulation megger box according to claim 2 is characterized in that: The extrusion member (6) comprises a sliding sleeve (61) arranged on the outer shell (10), a radial rod (62) being slidably arranged inside the sliding sleeve (61), and the radial rod (62) is in a Y-shaped structure on a side close to the conductive sheet (14).

4. The portable insulation megger box according to claim 3 is characterized in that: The fixed box (11) is in an L-shaped structure, with one end of the fixed box (11) close to the radial rod (62) and the other end close to the crank (2).

5. The portable insulation megger box according to claim 4 is characterized in that: The pressing control unit (7) comprises a shift rod (71) slidably arranged on a side of a fixed box (11) close to an outer radial rod (62); an adjusting component (8) for driving the shift rod (71) to move is arranged in the fixed box (11); and a pressing component (9) for manual operation by a staff member is arranged on a side of the fixed box (11) close to the crank (2).

6. The portable insulation megger box according to claim 5, characterized in that: The adjustment assembly (8) comprises a wedge block (81) arranged at one end of the shift rod (71) close to the radial rod (62), the wedge block (81) being in contact with the radial rod (62), and a spring 2 (82) for driving the shift rod (71) to return to its original position is arranged in the fixed box (11).

7. The portable insulation megger box according to claim 6, characterized in that: The pressing assembly (9) comprises two movable rods (91) slidably arranged in a fixed box (11), and buttons (92) are arranged at the ends of the movable rods (91). A spring (93) for driving the movable rods (91) to return to their original positions is arranged in the fixed box (11). A connecting plate (94) is arranged at one end of the displacement rod (71) away from the radial rod (62), and a first inclined groove (95) and a second inclined groove (96) are provided on the connecting plate (94) for respectively cooperating with adjacent movable rods (91). Pressing any movable rod (91) causes the connecting plate (94) to shift and lock, and pressing the other movable rod (91) realizes unlocking.

8. The portable insulation megger box according to claim 7, characterized in that: A card slot (12) is provided on the conductive sheet (14), and an upper cover plate (13) is rotatably provided on the housing (10).

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