Grounding box phase checking device

Abstract

This application relates to the field of phase comparison devices, and provides a grounding box phase comparison device, including a rod and a probe. A protective sleeve is fitted onto the rod, and a plug is provided inside the protective sleeve. A spring is compressed between the plug and the rod. The plug has a through hole for the probe to extend out, and a baffle is inserted into the plug to seal the probe in the through hole. A slidable movable plate is engaged with the side wall of the protective sleeve. The movable plate can be attracted by the rod and move with the rod, pulling the baffle out of the through hole. Based on the above structure, the combination of the protective sleeve and the rod can provide protection for the probe, and the rod can drive the movable plate to move the baffle out of the through hole, automatically controlling the opening and closing of the through hole.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of nuclear phase devices, and particularly provides a grounding box nuclear phase device. BACKGROUND

[0002] The grounding box nuclear phase is a phase check on the related power lines or equipment of the grounding box, the core of which is to confirm that the same phase potential difference approaches zero and the different phase is a line voltage, so as to avoid the grounding fault or equipment damage caused by the phase error, and the grounding box nuclear phase is commonly used after the cable line and grounding system are put into operation or overhauled.

[0003] The nuclear phase rod is a special insulating operation tool for the nuclear phase operation of the low-voltage grounding box, which comprises a rod body and a probe, and the probe is easy to be damaged due to being thin. SUMMARY

[0004] The application aims to provide a grounding box nuclear phase device, and aims to solve the technical problem that the probe of the nuclear phase rod is easy to be damaged in the prior art.

[0005] To achieve the above object, the application adopts the following technical scheme: The grounding box nuclear phase device comprises a rod body and a probe, a protective sleeve is sleeved on the rod body, a plug is arranged in the protective sleeve, a spring is compressed between the plug and the rod body, the plug has a through hole for the probe to extend out, a baffle for sealing the probe in the through hole is inserted into the plug, a movable plate is clamped on the side wall of the protective sleeve, the movable plate can be adsorbed by the rod body and move with the rod body, and the movable plate can adsorb the baffle out of the through hole.

[0006] The technical scheme of the application can provide protection for the probe by the combination of the protective sleeve and the rod body, and the movable plate can be driven to move by the rod body to move the baffle out of the through hole, so that the opening and closing of the through hole can be automatically controlled.

[0007] Further, an end head for blocking the protective sleeve is arranged at the end of the rod body.

[0008] Further, the inner diameter of the protective sleeve is equal to the outer diameter of the end head.

[0009] Further, a sliding groove for clamping the movable plate is arranged on the inner wall of the protective sleeve.

[0010] Further, a first magnetic block capable of being adsorbed by the movable plate is arranged on the side wall of the end head.

[0011] Further, a second magnetic block corresponding to the first magnetic block is arranged at the lower end of the movable plate.

[0012] Further, the baffle is arranged perpendicularly to the axis of the through hole.

[0013] Further, a third magnetic block capable of being adsorbed by the baffle is arranged at the upper end of the movable plate.

[0014] Furthermore, the upper end of the movable plate is also provided with a fourth magnetic block that can repel the baffle.

[0015] Furthermore, the fourth magnetic block is located between the third and second magnetic blocks. Attached Figure Description

[0016] Exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the embodiments described below are for illustrative purposes only and are not intended to limit the scope of this application. In the accompanying drawings: Fig. 1 This is a schematic diagram of the structure of the grounding box phase comparison device provided in this application; Fig. 2 This is an exploded view of the grounding box phase matching device provided in this application; Fig. 3 A cross-sectional view of the casing provided in this application; The following are the labeling elements in the figure: 10. Rod body; 11. End; 12. First limiting groove; 13. First magnetic block; 20. Probe; 30. Casing; 31. Plug; 311. Through hole; 312. Insertion hole; 313. Second limiting groove; 32. Baffle; 33. Movable plate; 331. Second magnetic block; 332. Third magnetic block; 333. Fourth magnetic block; 34. Slide groove; 35. Spring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description of this application is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this application and are not intended to limit this application.

[0018] Please see Figs. 1 to 3 In this embodiment of the application, a grounding box phase comparison device is provided, which includes a rod 10 and a probe 20. A protective sleeve 30 is sleeved on the rod 10, and a plug 31 is provided inside the protective sleeve 30. A spring 35 is compressed between the plug 31 and the rod 10. The plug 31 has a through hole 311 for the probe 20 to extend out. A baffle 32 for sealing the probe 20 in the through hole 311 is inserted into the plug 31. A slidable movable plate 33 is snapped onto the side wall of the protective sleeve 30. The movable plate 33 can be attracted by the rod 10 and move with the rod 10, and pull the baffle 32 out from the through hole 311.

[0019] Rod 10 refers to the main structural part of the nucleus rod. Rod 10 is made of insulating material, including but not limited to epoxy glass fiber.

[0020] The front end of the rod 10 has a head 11, and the probe 20 is mounted on the head 11. The head 11 is coaxially arranged with the rod 10, and the outer diameter of the head 11 is larger than the outer diameter of the rod 10.

[0021] Along the axial direction of the end 11, a first limiting groove 12 is provided on the outer wall of the end 11, and a first magnetic block 13 is bonded to the bottom of the first limiting groove 12.

[0022] The probe 20 refers to a structure that can be inserted into the terminal hole of the grounding box. The probe 20 has a built-in copper core and is wrapped with an insulating sheath. Only the tip is conductive to avoid accidentally touching adjacent phases and causing a short circuit. The probe 20 is arranged coaxially with the rod 10.

[0023] The protective sleeve 30 refers to the structure used to protect the probe 20. The protective sleeve 30 is sleeved on the outside of the end 11. For example, the inner diameter of the protective sleeve 30 is equal to the outer diameter of the end 11. The inner diameter of the end of the protective sleeve 30 away from the probe 20 is equal to the outer diameter of the rod 10. The inner diameter of the end of the protective sleeve 30 close to the probe 20 is equal to the outer diameter of the end 11. The protective sleeve 30 is blocked by the end 11 and cannot be moved out of the rod 10 from the end where the probe 20 is located.

[0024] A plug 31 is inserted into the end of the protective sleeve 30 near the probe 20. Specifically, the plug 31 is inserted into the inside of the protective sleeve 30 with an interference fit. The plug 31 is arranged coaxially with the protective sleeve 30. A through hole 311 is opened at the axis of the plug 31, and the probe 20 can pass through the through hole 311 and extend to the outside of the protective sleeve 30.

[0025] The plug 31 has a insertion hole 312, which extends in a direction perpendicular to the axis of the plug 31. The insertion hole 312 is connected to and communicates with the through hole 311. The baffle 32 is slidably inserted into the inside of the insertion hole 312 and can close the through hole 311.

[0026] A second limiting groove 313 is provided on the side wall of the plug 31. The second limiting groove 313 extends along the axial direction of the plug 31 and is connected to the insertion hole 312.

[0027] A spring 35 is compressed inside the protective sleeve 30. Specifically, the spring 35 is compressed between the plug 31 and the end 11. The spring 35 exerts an outward pushing force on the plug 31, thereby giving the protective sleeve 30 a tendency to move outward. This ensures that in the initial state, the lower end of the protective sleeve 30 abuts against the lower end face of the end 11, and the probe 20 is retracted into the through hole 311. At the same time, the baffle 32 is located above the probe 20, and the baffle 32 seals the probe 20 inside the through hole 311, thereby protecting the probe 20.

[0028] A groove 34 is provided on the inner side wall of the casing 30, and the groove 34 extends along the axial direction of the casing 30. Both ends of the groove 34 have retaining edges along the axial direction of the casing 30.

[0029] The movable plate 33 is fully engaged inside the slide groove 34, and the movable plate 33 can move inside the slide groove 34 along the axial direction of the protective sleeve 30. A second magnetic block 331 is bonded to the lower end of the inner sidewall of the movable plate 33, and a third magnetic block 332 and a fourth magnetic block 333 are bonded to the upper end. The fourth magnetic block 333 is located below the third magnetic block 332, that is, the fourth magnetic block 333 is arranged between the second magnetic block 331 and the third magnetic block 332.

[0030] It should be noted that part of the movable plate 33 is located outside the slide groove 34, and forms a sliding engagement with the first limiting groove 12 on the end 11 and the second limiting groove 313 on the plug 31.

[0031] It should be noted that, in the initial state, the lower end of the sleeve 30 abuts against the lower end face of the end 11, the first magnetic block 13 and the second magnetic block 331 are attracted to each other, and the lower end of the movable plate 33 abuts against the lower edge of the slide groove 34. At the same time, the fourth magnetic block 333 is located below the insertion hole 312, the third magnetic block 332 corresponds to the insertion hole 312, and the repulsive force formed by the third magnetic block 332 on the baffle 32 pushes the baffle 32 towards the through hole 311, so that the through hole 311 is blocked by the baffle 32, and the probe 20 is sealed inside the through hole 311.

[0032] In use, the upper end of the protective sleeve 30 abuts against the outside of the grounding box terminal hole. As the rod 10 pushes the probe 20 toward the terminal hole, the spring 35 is further compressed. Due to the attraction between the first magnetic block 12 and the second magnetic block 331, the movable plate 33 moves synchronously toward the plug 31 along with the end 11. When the third magnetic block 332 disengages from the insertion hole 312, the fourth magnetic block 333 moves to the position corresponding to the insertion hole 312. At this time, the upper end of the movable plate 33 abuts against the upper edge of the slide groove 34. The fourth magnetic block 333 and the baffle 32 form an attraction effect. The fourth magnetic block 333 pulls the baffle 32 out of the through hole 311. At this time, the through hole 311 is opened. As the rod 10 continues to move, the probe 20 passes through the through hole 311 and is inserted into the terminal hole.

[0033] The grounding box phase comparison device provided in this application embodiment can protect the probe 20 by combining the protective sleeve 30 with the rod 10. The rod 10 drives the movable plate 33 to move the baffle 32 out of the through hole, and the opening and closing of the through hole 311 can be automatically controlled.

[0034] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A grounding box phase comparison device, characterized in that, The device includes a rod and a probe. A protective sleeve is fitted onto the rod, and a plug is provided inside the protective sleeve. A spring is compressed between the plug and the rod. The plug has a through hole for the probe to extend out. A baffle is inserted into the plug to seal the probe in the through hole. A slidable movable plate is engaged with the side wall of the protective sleeve. The movable plate can be attracted by the rod and move with the rod, and pull the baffle out of the through hole.

2. The grounding box phase comparison device according to claim 1, characterized in that, The end of the rod is provided with a head for blocking the protective sleeve.

3. The grounding box phase comparison device according to claim 2, characterized in that, The inner diameter of the protective sleeve is equal to the outer diameter of the end.

4. The grounding box phase comparison device according to claim 3, characterized in that, The inner wall of the casing is provided with a groove for engaging the movable plate.

5. The grounding box phase comparison device according to claim 4, characterized in that, The side wall of the end is provided with a first magnetic block that can be attracted to the movable plate.

6. The grounding box phase comparison device according to claim 5, characterized in that, The lower end of the movable plate is provided with a second magnetic block corresponding to the first magnetic block.

7. The grounding box phase comparison device according to claim 6, characterized in that, The baffle is arranged perpendicular to the axis of the through hole.

8. The grounding box phase comparison device according to claim 7, characterized in that, The upper end of the movable plate is provided with a third magnetic block that can be attracted to the baffle.

9. The grounding box phase comparison device according to claim 8, characterized in that, The upper end of the movable plate is also provided with a fourth magnetic block that can repel the baffle.

10. The grounding box phase comparison device according to claim 9, characterized in that, The fourth magnetic block is located between the third magnetic block and the second magnetic block.

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